The 20-Year Playbook for a Federal Pension
A field manual for federal employees in years 0–15 of service. How to engineer the second half so your pension, supplement, TSP, and FEHB are still standing when you walk out the door.
The 30-Second Version
- Twenty years of FERS service is the floor, not the ceiling. Hit twenty, and you unlock the 1.1% multiplier at age 62, the FERS Supplement bridge to Social Security, and FEHB for life. Miss any of the three and the math gets ugly fast.
- The TSP is where the pension stops being enough. A FERS pension at 20 years replaces roughly 20% of your high-3. Social Security replaces another 25–35%. The TSP has to do the rest — and at 2026 limits ($24,500 elective deferral, $32,500 with the age-50 catch-up), it can.
- Five years is the magic number for FEHB. You must be continuously enrolled for the five years immediately before retirement. Skip a year for a spouse's plan and you can lose access to government-subsidized health insurance for life — worth roughly $20,000 per year in retiree premium support.
- MRA is a trap if you're not careful. Leaving at the Minimum Retirement Age (57 for most) with anything less than 30 years means a 5%-per-year reduction below age 62 — up to a 25% permanent cut for life. Three other paths exist; pick deliberately.
- The FERS Supplement is real money, but it has rules. The bridge benefit between MRA retirement and age 62 is reduced $1 for every $2 of earned income above $24,480 in 2026. Plan your post-retirement work accordingly or lose half the supplement to the earnings test.
- Tax planning matters more than fund picking. Whether your TSP is Traditional or Roth, where you retire to, and when you take Social Security have a bigger long-term impact than whether you ride the C Fund or a Lifecycle Fund.
Who This Is For
- FERS employees in years 0–15 of service
- Mid-career feds at GS-11 through GS-15
- Anyone still 5+ years from their MRA
- People making the Traditional vs. Roth TSP decision
- Feds weighing leaving for a private sector role and wondering what they'd give up
Who This Is Not For
- CSRS-only retirees (different system, different math)
- Feds already inside 5 years of retirement — read a near-retirement playbook instead
- Special Category employees (LEO/FF/ATC) — your rules differ enough to need their own guide
- Military-only retirees — covered in a separate playbook
- Anyone with fewer than 5 years of expected service — FERS won't vest you for an immediate annuity
The 20-Year Math: What Twenty Years of FERS Actually Buys
Before any retirement strategy makes sense, the numbers have to. Here is exactly what 20 years of FERS service produces — and where the pension stops being enough.
The FERS pension formula is short enough to fit on one line:
Every variable in that line is something you can influence over a 20-year career. The high-3 is your three highest consecutive years of basic pay (locality included; bonuses and overtime not). Years of service is exactly what it says, with sick leave converted to additional service at retirement. The multiplier is the one number federal employees get wrong most often:
- 1.0% per year for everyone who retires before age 62, or with fewer than 20 years.
- 1.1% per year — a permanent 10% pension boost — but only if you retire at age 62 or later and with at least 20 years of service. Both conditions, not either.
That second multiplier is the entire point of the 20-year target. It's not just an extra tenth of a percent — it's a permanent uplift across every year of retirement, indexed by COLA, paid for life, and (with a survivor election) paid to a spouse after you. For a federal employee with a $110,000 high-3, the difference between 1.0% and 1.1% on 20 years of service is $2,200 per year, every year, forever. Across a 25-year retirement that's $55,000 in nominal dollars before COLAs — and well over $90,000 with COLAs applied.
What 20 years actually pays
Let's run real numbers, not abstractions. Here are three federal employees retiring in 2026, each with 20 years of FERS service. All numbers use 2026 GS base pay before any locality adjustment, so your actual high-3 will be higher if you serve in a real locality.
| Profile | High-3 | Multiplier | Annual Pension | Monthly (gross) |
|---|---|---|---|---|
| GS-12, Step 7, retires at MRA 57 | $98,500 | 1.0% | $19,700 | $1,642 |
| GS-13, Step 5, retires at age 62 | $114,000 | 1.1% | $25,080 | $2,090 |
| GS-14, Step 7, retires at age 62 | $155,000 | 1.1% | $34,100 | $2,842 |
Three things jump out of that table immediately.
First, the pension is not the retirement. Even the GS-14 — comfortably above the federal median — gets $34,100 per year from FERS at 20 years. That's roughly 22% of their pre-retirement pay. The "three-legged stool" of FERS, TSP, and Social Security exists precisely because no single leg is enough.
Second, the 1.1% multiplier matters more than people think. Compare the GS-13 retiring at 62 ($25,080) against the same GS-13 retiring at MRA 57 with the 1.0% multiplier ($22,800). That's $2,280 per year for life — and they didn't even change their service years. They just timed the exit.
Third, high-3 is a lever you actually control. The high-3 is the average of your highest 36 consecutive months of basic pay. For most feds that's the last three years of service. For people who downgrade voluntarily late in career — to coast, to relocate to a lower locality, to take a less demanding role — the high-3 quietly tanks. A move from a 33% locality to a 17% locality in your final years can cost you $20,000+ in high-3 alone, which is $200/month off your pension. Forever.
Your high-3 isn't necessarily your last three years. It's any 36 consecutive months in your career — wherever the pay was highest. If your peak earnings were in a different region years ago, that period can become your high-3 instead. Worth knowing before you accept a late-career role at a lower locality.
Run your own numbers
Move the sliders below to see what your specific situation pays. The numbers are gross pension before survivor election, FEHB premium, and federal tax withholding.
What 20 years doesn't buy you
The number 20 has a specific meaning under FERS — it's the threshold for the enhanced 1.1% multiplier at age 62, and the standard threshold for an immediate annuity at age 60 (which is the easiest unreduced retirement path that isn't MRA+30). It is not the threshold for FEHB-in-retirement (that's just five years of continuous coverage plus immediate retirement eligibility), it is not the threshold for the FERS Supplement (any immediate non-MRA+10 retirement before 62 qualifies), and it is not the threshold for survivor benefits (any married federal retiree can elect).
What 20 years does buy you that the alternatives don't:
- The 1.1% multiplier if you stay until 62 (a 10% permanent pension boost)
- An immediate, unreduced annuity at age 60 (the "60 + 20" path — full pension, no penalty, no waiting)
- A meaningful FERS Supplement amount, because the supplement is proportional to years of service
- Enough years on the federal payroll to make TSP matching actually compound into something real
The pension growth curve over a career
One of the most useful charts a mid-career federal employee can stare at is what their pension looks like across different retirement scenarios. Here's that chart — same employee, same high-3 of $110,000, different retirement timings.
Notice the discontinuity at age 62. That's the 1.1% multiplier kicking in if (and only if) you also have at least 20 years of service. For someone with a $110,000 high-3 retiring with exactly 20 years, the jump from 1.0% at 61 to 1.1% at 62 is a permanent $2,200/year raise. That's why staying one more year past 61 is often the highest-ROI year a federal employee will ever work.
The 5-Year-by-5-Year Roadmap
A 20-year FERS retirement isn't built in the last two years. It's built in four distinct phases — and the decisions you optimize for in each phase look almost nothing alike. Here's what to prioritize and what to ignore at each stage of your career.
If you're reading this guide as a federal employee in years 0–15 of service, you're not in the same situation as someone three years from MRA. The advice that gets shared on retirement forums — "max your TSP, take the agency match, claim Social Security at 70" — is mostly aimed at people in their final five years. It's not wrong, but it's the wrong sequence. The order matters.
Think of FERS retirement preparation as four 5-year phases, each with its own dominant question:
- Years 1–5: Will you stay long enough for the system to pay you back?
- Years 6–10: Are you on the grade-and-locality trajectory that produces a meaningful high-3?
- Years 11–15: Is your TSP doing what the pension can't — and can it survive a bad sequence of returns?
- Years 16–20: Are you optimizing the exit, or just running out the clock?
Each phase is below with the specific moves that matter most, the 2026 numbers that anchor them, and the things you can safely ignore for now.
The Vesting Window: Don't Quit Before the System Pays Back
The federal pension is back-loaded. The vast majority of your future annuity is purchased in the last decade of service through high-3 growth — but you can't get there without surviving the first five years. This phase is about three specific milestones, and everything else is noise.
Priorities in this phase
- Survive year 1 (probationary period). Federal probation typically runs one year. You can be removed with very limited appeal rights during it. Don't grandstand. Don't fight unwinnable battles. Get to your one-year anniversary clean.
- Hit 3 years for the FEHB clock. The FEHB five-year rule starts the day you enroll, not the day you start. Make sure you're enrolled in any FEHB plan from day one and never drop coverage. Five continuous years immediately before retirement is what unlocks FEHB-in-retirement for life.
- Hit 5 years to vest the FERS pension. Leave with less than 5 years of creditable service and you forfeit any future FERS annuity entirely — though your contributions can be refunded (with a tax hit). Five years vests you for a deferred annuity payable at MRA.
- Capture the full 5% TSP match from day one. Federal employees get a 1% automatic agency contribution plus dollar-for-dollar matching up to 3% of pay and 50¢ on the dollar for the next 2%. That's a guaranteed 5% return on your first 5% — the highest-return investment you'll ever make. Even if your budget is tight, hit 5%.
Federal employees who skip TSP entirely during years 1–5 because "the pension is enough" leave roughly $4,000–$7,000 per year of free money on the table — every year, indefinitely. Across 20 years of career, that's $80,000–$140,000 in foregone matching contributions plus compound growth. Don't be that person. The 5% match is non-negotiable.
The Grade Climb: Engineering a High-3 That Carries You
By year 6 the foundational decisions are done. Now the question shifts: is your grade and locality trajectory consistent with the pension you want at year 20? This is the phase where most federal careers either accelerate or quietly stall — and the difference shows up in the high-3 calculation a decade later.
Priorities in this phase
- Decide whether you're a 13/14/15 trajectory or not. The single biggest determinant of your eventual high-3 is the grade you top out at. A career that plateaus at GS-12 produces a meaningfully smaller pension than the same years served at GS-13 or higher. If you have promotion potential, take it — even at the cost of a less comfortable role.
- Move toward higher-locality regions if it serves the strategy. Locality pay can swing total compensation by 15–35% for the same grade and step. Washington-Baltimore (33.94% in 2026), San Francisco (45.41%), and New York (37.34%) are some of the highest. Spending the final third of your career in a high-locality area can lift your high-3 by tens of thousands.
- Push TSP to at least 10–15% of pay. Five percent captures the match. Ten to fifteen percent puts you on track for a TSP balance that actually replaces income at retirement. At a $90,000 salary, 15% is $13,500/year of contributions — well within the 2026 elective deferral limit of $24,500 and leaves room to ramp up later.
- Default to the Traditional TSP if you're at GS-12 or above; consider Roth if you're below. Tax bracket arbitrage matters. Mid-career feds typically have higher marginal rates now than they'll face in retirement (when there's no FICA, no state income tax in some destinations, and lower total income). Traditional now → tax-deferred → Roth conversions later is a common path. Lower-paid feds with long horizons benefit more from Roth now.
"Comfortable" GS-12 roles in low-locality regions are the most common federal career trap. They feel like stability — and they're paying real money — but they cap your high-3 in a way you can't reverse later. If you're seven or eight years in and notice that promotion has stopped being a topic of conversation, that's a signal worth taking seriously.
The Compound Years: Where the TSP Outruns Your Pension
Years 11 through 15 are where compounding starts doing the heavy lifting. The TSP balance you build in this window — combined with the agency match and the steady growth — produces the difference between a comfortable retirement and a tight one. This is also where most people start asking the wrong questions about fund allocation.
Priorities in this phase
- Push TSP toward the federal maximum. The 2026 elective deferral limit is $24,500. If your household can support it, this is the phase to fully max it. Even partial maxing — $18,000–$20,000/year — produces dramatically different balances at year 20 than 5–10% contributions would.
- Choose a fund allocation and stop touching it. The C Fund, S Fund, and I Fund are equity funds; the G Fund and F Fund are fixed income. The Lifecycle (L) funds automatically rebalance based on a target retirement year. For most mid-career feds with 10+ years of horizon, an aggressive allocation (80–100% equities) is appropriate. The mistake isn't picking the wrong fund — it's switching repeatedly based on news cycles. Pick a sensible allocation and leave it alone for years.
- Decide your retirement age now, not later. By year 12, you have enough data — current grade, locality, family situation, health — to start running scenarios. Will you go at MRA? Age 60 with 20 years? Age 62 with 20 to claim the 1.1% multiplier? The answer materially changes how aggressive your TSP allocation should be in years 15–20.
- Run the FEHB clock check. By year 15, you should be eight to ten years away from MRA. Confirm that you've been continuously enrolled in FEHB for the entire period — not just enrolled, but never lapsed. If your spouse's plan ever covered you for a year while you dropped FEHB, you need to re-enroll and run the clock again before retirement.
The Exit Engineering Years: Optimization, Not Acceleration
The final phase isn't about accumulating more — it's about protecting what you have, timing the exit precisely, and making sure no single rule cuts your retirement off at the knees. By year 16, every decision should be evaluated against a single question: does this preserve or improve my retirement position?
Priorities in this phase
- Turn on the age-50 catch-up if you're eligible. Starting the year you turn 50, you can contribute an additional $8,000 on top of the $24,500 limit — a 2026 total of $32,500. The new "super catch-up" for ages 60–63 allows up to $11,250 of catch-up (subject to plan rules), making the effective limit higher in those specific years.
- Lock the high-3. Once you're inside three years of retirement, do not voluntarily move to a lower-locality position, downgrade for lifestyle, or take a step decrease. The high-3 is the average of your highest 36 consecutive months — almost always your final three years. Protect it.
- De-risk the TSP partially, not entirely. Common mistake: full G Fund shift in the last year. The retirement runway is 20–30 years long; you still need equity exposure for inflation protection. Move toward a more balanced allocation (60/40 or 70/30 equities/fixed income) in the final two to three years.
- Audit FEHB, FEGLI, FSAFEDS, and TSP beneficiaries. The exit checklist is long. Confirm five-year FEHB enrollment. Verify FEGLI election (most people overpay here). Verify TSP beneficiary forms. Get an OPM benefits estimate at least 18 months before retirement.
- Run a real retirement income projection. Pension + supplement + TSP withdrawals + (eventually) Social Security. Tax-adjusted. Inflation-adjusted. Sequence-of-returns stress-tested. This is the phase where you find out whether you actually have enough.
Federal employees often hit year 18 or 19 and wonder whether to push to 20 or to 22. The math is usually unambiguous: each additional year past 20 adds another 1% (or 1.1% if you'll be 62+) of your high-3 to your annual pension, paid for life. At a $115,000 high-3, that's an extra $1,150–$1,265 per year, every year, plus COLAs. The year-21 ROI is essentially infinite if you'd otherwise be doing the same job anyway.
The roadmap on one page
Stepping back, here's the entire career arc in one table — the dominant question at each phase, the key 2026 number to anchor against, and the single biggest mistake to avoid.
| Phase | Dominant Question | 2026 Anchor Number | Biggest Mistake |
|---|---|---|---|
| Years 1–5 | Will I stay long enough? | 5% TSP to capture match | Skipping TSP "until later" |
| Years 6–10 | Am I on the grade trajectory I need? | 10–15% TSP contribution | Plateauing at GS-12 in low locality |
| Years 11–15 | Is the TSP doing what the pension can't? | $24,500 max contribution | Switching funds based on headlines |
| Years 16–20 | Am I engineering the exit, or running out the clock? | $32,500 max with catch-up | Going full G Fund in final year |
TSP Strategy Across 20 Years
If the FERS pension replaces ~20% of pre-retirement income and Social Security covers another ~25–35%, the TSP carries everything else. That's not a side account — it's the largest piece of your retirement. Here's how to build it.
The Thrift Savings Plan is structurally one of the best defined-contribution retirement plans in existence — institutional-grade fund options, expense ratios under 0.10%, dollar-for-dollar employer matching, and a fund (the G Fund) that no private plan can replicate. That doesn't mean federal employees use it well. The most common TSP failures are not exotic — they're predictable, repeated, and avoidable.
The 2026 contribution limits, in plain English
| Limit Type | 2026 Amount | Who It Applies To |
|---|---|---|
| Elective deferral (regular) | $24,500 | Every TSP participant under age 50 |
| Age-50 catch-up | +$8,000 (= $32,500 total) | Anyone turning 50 or older during 2026 |
| Ages 60–63 super catch-up | +$11,250 (replaces the $8,000) | Anyone aged 60–63 at year-end 2026 (SECURE 2.0) |
| Annual additions limit (§415) | $72,000 | Total of all contributions including agency match and any after-tax |
The $72,000 annual additions limit is the cap on total contributions to your TSP from all sources combined in 2026 — your elective deferrals, the agency's 1% automatic contribution, the agency match, and (in rare cases) traditional after-tax. For nearly every federal employee, the elective deferral limit ($24,500 or $32,500) will be the binding constraint, not §415. But if you're a high earner with maximum match plus catch-up, you may want to verify with your TSP statement at year-end.
The agency match: stop leaving it on the table
FERS employees get three layers of agency contribution. They are completely separate from your own deferrals:
- 1% automatic agency contribution. Paid every pay period regardless of whether you contribute anything yourself. This is free money — you can't opt out and you can't add to it.
- Dollar-for-dollar match on the first 3% of your pay. Contribute 3% of pay and your agency contributes 3% of pay alongside it.
- 50¢ on the dollar for the next 2% of pay. Contribute 5% of pay total and your agency adds 1% more on top of the 3% match.
Add those together: contribute 5% of your pay and you get 5% from the agency. A federal employee earning $100,000 who contributes 5% ($5,000) ends the year with $10,000 added to their TSP — half of it from the agency. That's a 100% instant return before any market growth.
The TSP match is calculated per pay period, not annually. If you front-load and max out your $24,500 contribution by August, your contributions stop — and so do the agency matching contributions for the rest of the year. You can lose 3–4 pay periods of match (roughly $1,500–$2,500) by accident. Spread your contributions evenly across all 26 pay periods, or stop at exactly the amount that lets you continue contributing 5%+ through the final pay period.
What 20 years of disciplined TSP contributions actually grows to
Adjust the sliders below to see what your TSP balance could reach across different career timelines and contribution rates. All projections assume reasonable long-term market assumptions and exclude the agency match (which is added on top of your own contributions in the chart that follows).
The TSP funds, ranked by what they actually do
There are five core TSP funds plus the Lifecycle (L) target-date series. Most federal employees use them wrong — concentrating too defensively for long horizons or shuffling between them based on news. Here's what each fund is actually for:
Tracks the S&P 500. Owns 500 of the largest U.S. companies. Long-run real return historically ~7% after inflation. This is the default growth engine for any TSP participant with 10+ years until retirement.
Growth EngineTracks the Dow Jones U.S. Completion TSM Index — essentially U.S. stocks not in the S&P 500. Higher volatility, slightly higher expected return. Good 5–15% allocation alongside the C Fund.
Higher RiskTracks developed and (since 2024) emerging market equities. Adds geographic diversification. Most allocations of 10–20% here are sensible; over 30% concentrates currency risk.
DiversifierTracks the Bloomberg U.S. Aggregate Bond Index. Includes Treasuries, corporates, mortgage-backed securities. Volatile during rate-change periods. Useful for portfolio stabilization in the final 5–10 years before retirement.
StabilizerSpecial non-marketable U.S. Treasury securities. Cannot lose principal. Yields slightly above intermediate Treasuries. Unique to TSP — no private-sector equivalent. Best used as a "true cash" allocation in retirement, not as a long-horizon investment.
Capital PreservationFive flavors plus L Income, tied to expected retirement year. Auto-rebalance and gradually shift toward G/F as the target year approaches. Solid default option if you don't want to manage your own allocation.
Set-and-ForgetHow allocation should change across the 20 years
The biggest allocation mistake is treating your TSP the same in year 5 as in year 19. Time horizon is everything. Here's a defensible glide path:
Traditional vs. Roth TSP: the decision that actually matters
The Traditional/Roth choice gets framed as a tax-bracket arbitrage question — "are your taxes higher now or in retirement?" — but most federal employees underestimate how much the answer depends on factors other than the bracket:
- Where you'll live in retirement. Nine states have no state income tax (FL, TX, TN, NV, SD, WY, AK, WA, NH). Moving from a high-tax state to one of these in retirement makes Traditional more attractive (you defer state tax now, never pay it later). Roth is less useful in that scenario.
- Future tax law uncertainty. Roth provides hedging against future tax rate increases. Traditional puts you on the assumption that brackets stay similar. Neither is inherently safer — they're bets in opposite directions.
- Required Minimum Distributions. Starting at age 73, you must withdraw a minimum from Traditional balances (RMDs). Roth TSP, post-rollover to a Roth IRA, has no RMDs. For wealthy retirees, this matters meaningfully.
- The match is always Traditional. Even if you choose Roth for your own contributions, the agency's match goes into a Traditional sub-account. You'll have both buckets either way.
If you're at GS-12 or above and at least five years from retirement, Traditional TSP for your contributions is usually the right default — you defer at a high bracket now, control the withdrawal timing later, and have flexibility for Roth conversions in low-income years between retirement and Social Security/RMDs. If you're below GS-11 or in your first decade, Roth TSP captures a likely-lower current bracket and grows tax-free for life. Either way, max what you can.
The MRA Decision: When to Walk and When to Wait
"MRA" sounds like a finish line — the earliest age you're allowed to retire. For most federal employees it isn't. Hitting MRA without enough years of service triggers permanent pension reductions of up to 25% for life. There are four distinct paths past MRA, and most feds don't pick the right one.
The Minimum Retirement Age — 57 for anyone born in 1970 or later — is the age at which you become eligible to retire at all. It's not the age at which retirement makes financial sense. Depending on how many years of service you have when you hit MRA, your retirement could be unreduced, partially reduced, or permanently slashed by a quarter. The decision is real, and the math is one-time-only.
The MRA chart by birth year
| Year of Birth | Minimum Retirement Age |
|---|---|
| Before 1948 | 55 |
| 1948 | 55 and 2 months |
| 1949 | 55 and 4 months |
| 1950 | 55 and 6 months |
| 1951 | 55 and 8 months |
| 1952 | 55 and 10 months |
| 1953–1964 | 56 |
| 1965 | 56 and 2 months |
| 1966 | 56 and 4 months |
| 1967 | 56 and 6 months |
| 1968 | 56 and 8 months |
| 1969 | 56 and 10 months |
| 1970 or later | 57 |
The four paths past MRA
When you hit MRA, you have four meaningfully different exit options. They look similar on paper. Their lifetime financial impact is not similar at all.
Path 1 — Immediate Unreduced Retirement
MRA+30, 60+20, or 62+5You walk out and your pension starts immediately, at full value, with the FERS Supplement bridging you to age 62. This is the "intended" FERS retirement path. To qualify you need one of: MRA with 30 years, age 60 with 20 years, or age 62 with 5 years. Note that age 62 with 20+ years also unlocks the enhanced 1.1% multiplier.
- Full unreduced pension begins immediately
- FERS Supplement until age 62
- FEHB continues into retirement
- FEGLI continues (per your election)
- COLA begins per FERS rules at 62
- No 5%-per-year reduction
Path 2 — MRA+10 Immediate Retirement
MRA reached, 10–29 years of serviceYou hit MRA and have at least 10 years of service but less than 30. You can retire immediately — and your pension is permanently reduced by 5% for every year you're under age 62. Leave at 57 with 15 years and you eat a 25% permanent cut. The reduction doesn't go away when you turn 62. There is no recovery.
- Permanent 5%-per-year reduction (up to 25%)
- No FERS Supplement
- FEHB continues (if 5-year rule met)
- FEGLI continues (per your election)
- Reduction never recovers — paid for life
- Pension starts immediately
Path 3 — Postponed Retirement
MRA reached, 10+ years of serviceSame eligibility as MRA+10, but you separate from service and postpone claiming the pension until age 62 (or age 60 if you have 20+ years). The reduction disappears entirely. The catch: you have no FEHB or FEGLI during the postponed period — but if you had the 5-year FEHB coverage at separation, you can re-enroll the day your pension starts. This is the smart play for anyone with MRA+10 eligibility who doesn't need pension income immediately.
- No permanent reduction
- No FEHB during postponement period
- Can re-enroll in FEHB when pension begins
- No FERS Supplement (even after pension starts)
- Application form: OPM RI 92-19
- Pension delayed to age 60 or 62
Path 4 — Deferred Retirement
5+ years of service, separated before MRAYou leave federal service before your MRA but with at least 5 years of creditable service. Your pension is preserved in the system and you can claim it at age 62 (or age 60 with 20+ years, with MRA+10 reduction rules applying if claimed earlier). The painful trade: FEHB, FEGLI, and FEDVIP are gone permanently. You cannot reinstate them when the pension starts. This is the path for people who leave for the private sector and don't intend to come back.
- Pension preserved (vesting begins at 5 years)
- FEHB permanently forfeited
- FEGLI permanently forfeited
- No FERS Supplement, ever
- No COLAs until age 62
- Pension delayed to age 60 or 62
People who leave federal service in their early 50s for private sector roles routinely don't realize they're locked into deferred retirement — not postponed — because they hadn't yet hit MRA. The result is a pension preserved at age 62 but FEHB gone for life. The fix is straightforward: if you're within sight of MRA and have at least 10 years of service, push to that milestone before separating. Even an extra six months on the federal payroll can convert a deferred retirement into a postponed one, with FEHB-reinstatement rights intact. The difference is roughly $300,000 of lifetime FEHB premium support.
What MRA+10 actually costs you, in dollars
Consider a federal employee with a $110,000 high-3 and 15 years of service. Their unreduced annual pension would be $110,000 × 15 × 1.0% = $16,500. Now look at the three timing decisions:
| Choice | Age Started | Reduction | Annual Pension | Lifetime Cost vs. Unreduced |
|---|---|---|---|---|
| MRA+10 Immediate (at 57) | 57 | 25% | $12,375 | ~$41,000 less to age 87* |
| Postponed (claim at 62) | 62 | 0% | $16,500 | Wins long-term |
| Postponed (claim at 60 with 20yrs) | 60 | 0% | $22,000** | **Requires 5 more years of service |
*The comparison isn't simple. The MRA+10 retiree gets a 5-year head start of pension income ($12,375 × 5 years = $61,875 collected before Postponed begins). The Postponed retiree's higher annual pension eventually catches up — the crossover is around age 77. Past 77, Postponed pulls ahead. By age 87, Postponed has paid roughly $41,000 more in nominal dollars than MRA+10 Immediate; by age 95 the gap is closer to $74,000. With FERS COLAs applied to the unreduced pension, the long-life advantage of Postponed is meaningfully larger. The pivot point is your expected longevity: if you have strong reason to believe you won't reach 77, MRA+10 Immediate can win. If you expect to live into your 80s or beyond, Postponed almost always wins — and that's the population most federal retirees fall into.
The FERS Supplement: real money with real strings
The FERS Supplement (also called the Special Retirement Supplement or SRS) is a bridge benefit paid by OPM to federal retirees who:
- Took an immediate retirement (Path 1), not MRA+10, postponed, or deferred
- Retired before age 62
- Have at least one full year of FERS service
The supplement is calculated to approximate the Social Security benefit you've earned from your federal service. The formula is roughly:
For a federal employee with 20 years of service whose age-62 Social Security benefit would be $24,000/year, the supplement would be about $24,000 × (20 ÷ 40) = $12,000 per year, paid monthly. It ends the month before you turn 62, whether you start Social Security at that point or wait.
The FERS Supplement is subject to the Social Security earnings test. In 2026, every $2 of earned income above $24,480 reduces the supplement by $1. If you retire at MRA and earn $54,480 in a consulting role, the first $24,480 is free — but the next $30,000 cuts $15,000 from your supplement. For most retirees taking on substantial post-retirement work, this effectively eliminates the supplement until age 62. If keeping the supplement intact matters, cap your earned income just below the limit, or work in a 1099 capacity where you can defer income strategically.
The decision framework, in one question
If you're somewhere in years 12–18 of FERS service and starting to think about exit timing, the framework reduces to a sequence of three questions:
- Can I reach age 62 with 20+ years of service? If yes, that's the target. It unlocks the 1.1% multiplier (a 10% permanent pension boost), no reduction, FEHB for life, and a clean exit. Almost everything else is suboptimal by comparison.
- If not 62+20, can I reach MRA+30, 60+20, or 62+5? Any of these gives you Path 1 (immediate unreduced + supplement). Pick whichever requires the fewest additional years of work.
- If none of those are realistic, am I closer to MRA+10 than to MRA+30? If yes, plan on Path 3 (postponed retirement) — separate at MRA+10 and claim the pension at 60 (if 20yrs) or 62. Do not take MRA+10 immediate retirement unless the 25% reduction is a price you've consciously accepted in exchange for immediate cash flow.
For federal employees with 18 or 19 years of service nearing MRA, the math overwhelmingly favors pushing to age 60 (for 20+ years immediate retirement at age 60) or to age 62 (for the 1.1% multiplier and 20+ years). One additional year of service adds 1.0% (or 1.1% at age 62+) of your high-3 to your pension permanently. Across a 25-year retirement that's a return that no private investment can match. The hardest part isn't the math — it's the psychological challenge of working one more year when the door is right there.
The Healthcare Bridge: FEHB, Medicare, and the 5-Year Trap
FEHB-in-retirement is the most valuable benefit a federal employee can carry into retirement that most never quantify. The government continues paying roughly 70% of your premium for life. One rule decides whether you keep it: five continuous years of FEHB enrollment immediately before retirement.
If you only retain one thing from this entire playbook, retain this: do not let your FEHB enrollment lapse in the five years before you retire. Not for a spouse's plan. Not for COBRA after a temporary separation. Not for a TRICARE-only year. Not for any reason. The five-year rule is brutal in its simplicity and consequential beyond what most federal employees realize until it's too late.
The 5-year rule, plainly stated
To carry FEHB into retirement, you must be enrolled in any FEHB plan (any carrier, any tier, any premium) for the entire five-year period immediately preceding your retirement. Time spent as a federal employee in a "TRICARE only" or "no FEHB" status does not count. Time on a spouse's FEHB plan as a family member does count, but only if the spouse was a federal employee — not a contractor, not a state employee, not a private-sector employee whose plan happens to be similar.
The clock is strictly continuous. A single year out of FEHB inside that 5-year window resets you. The day you retire is the snapshot, and OPM looks back 60 months. There are no exceptions, no waivers, no "I didn't know" appeals.
Common scenario: a federal employee in their late 40s drops FEHB to go on a spouse's better private-sector plan, saving $200/month. They plan to "re-enroll later." Five years before retirement they re-enroll. The clock starts over. If they retire on schedule, they fail the five-year rule by months. FEHB-in-retirement is permanently forfeited. The "savings" cost them roughly $300,000–$500,000 in lifetime premium subsidies, depending on plan and longevity. Don't let anyone — even a spouse's HR — talk you off federal FEHB inside the 10-year window before retirement.
What FEHB-in-retirement is actually worth
In 2026, the government's "Government Contribution" toward FEHB premiums is approximately the same in retirement as it was during your working years — roughly 70% of the premium, capped at no more than 75% of the weighted average premium of all FEHB plans. For an annuitant with family-tier coverage, this typically works out to:
Over a 25-year retirement, the family-tier government share alone exceeds $500,000 in nominal dollars. Apply realistic premium inflation of 4–5% per year — the long-run trend for FEHB premiums — and the cumulative employer share over a 25-year retirement reaches $750,000 to $1 million. This is not a side benefit. It is one of the three largest financial pillars of a FERS retirement, alongside the pension itself and Social Security.
FEHB premiums in retirement — what changes and what doesn't
Three things shift when you transition from active employee to annuitant:
- Pre-tax becomes post-tax. As an employee, your FEHB premium is deducted pre-tax through Premium Conversion. As a retiree, premium is deducted from your annuity post-tax. Same dollar premium, but you pay it with after-tax money. Expect roughly $1,000–$2,000/year less take-home equivalent for typical federal retirees compared to working-year math.
- Same plan, same premium tier. You keep the exact plan you had at retirement (or any FEHB plan you switch to during Open Season). The government continues paying its share at the same percentage.
- Plan changes still allowed annually. You can switch FEHB plans during Open Season every November/December as a retiree, the same as when you were working.
FEHB meets Medicare: the age-65 decision
At age 65, federal retirees become eligible for Medicare. This triggers the second-most-important healthcare decision in retirement: what to do about Medicare Part B.
The choices are:
- Enroll in Medicare Part A only (free for most). Part A covers hospital costs and has no premium for anyone who paid into Social Security for 40 quarters. There's no real reason not to take Part A.
- Enroll in Medicare Part B (premium-based). Part B covers outpatient services. The standard 2026 premium is $206.50/month ($2,478/year per person), with income-related surcharges (IRMAA) for higher earners.
- Keep FEHB as your primary coverage. Unlike most private retirees, federal retirees can keep FEHB after 65 — Medicare and FEHB coordinate as primary/secondary.
The decision isn't "Medicare instead of FEHB" — it's whether to layer Part B on top of FEHB. Layering both gives you near-zero out-of-pocket for most services, because each plan covers what the other doesn't. The cost is the Part B premium (~$2,478/year for two retirees = ~$4,956/year base, plus IRMAA if income is high). Many federal retirees find this worth it. Others, particularly those with lower-cost FEHB plans like the BCBS Standard or GEHA HDHP, find FEHB alone sufficient and skip Part B. There is no universal right answer — but the calculation should be deliberate, not default.
The 2026 Medicare numbers federal retirees should know
| Item | 2026 Amount | Notes |
|---|---|---|
| Part A premium (most) | $0 | Free if you have 40 quarters of SS-covered work |
| Part B standard premium | $206.50/month | $2,478/year per person at standard income |
| Part B IRMAA threshold (single) | $109,000 MAGI | Higher premiums above this |
| Part B IRMAA threshold (joint) | $218,000 MAGI | Higher premiums above this |
| Late enrollment penalty | +10% per year | Permanent — applies if you delay Part B past 65 without other creditable coverage |
If you don't enroll in Part B within the initial enrollment window (the 7-month period around your 65th birthday) and you don't have other creditable coverage, you pay a permanent 10% premium increase for every full 12-month period you went without it. FEHB is considered creditable coverage for this purpose for federal retirees — but the rules are nuanced, and missing the window when you intended to enroll later can cost real money. If you're planning to take Part B at any point in retirement, take it at 65 unless you have a specific reason to delay.
The single best move you can make right now
If you're inside the 10-year window before retirement, the single highest-value FEHB action is verification. Log into your eOPF or contact your HR shop and confirm in writing the exact dates of your FEHB enrollment history. If there are any gaps you didn't realize existed — a year where coverage lapsed during a job change, a period under a non-FEHB spouse plan that you thought counted — you need to know now, while you can still extend your career to re-establish the 5-year clock.
Federal employees who discover FEHB enrollment gaps three months before their planned retirement typically have three terrible options: delay retirement, retire without FEHB-for-life and buy ACA marketplace coverage forever, or take a postponed/deferred retirement and lose more benefits. Any of those is a real five- or six-figure cost. The cure is verification while there's still time to fix anything.
Social Security Stacking with FERS
Federal employees under FERS pay into Social Security every paycheck. By the time you retire, it's the second-largest piece of your retirement income — bigger than your pension for many feds. When and how you claim it determines hundreds of thousands of dollars over a 25-year retirement.
One of the things FERS got right (and CSRS got wrong) was including federal employees in Social Security. That decision means your FERS retirement income is structured as a true three-legged stool: pension, TSP, and Social Security. The leg most federal employees underestimate is the third one — and the claiming decision around it is the largest discretionary money decision of your retirement.
The 2026 Social Security landscape
Here's what the system actually pays, in 2026 dollars, for a federal employee with a full earnings history at or near the taxable maximum:
The average retired worker benefit in 2026 is approximately $2,071 per month ($24,852/year). Federal employees in mid-to-late career grades — especially GS-13 and above — typically earn closer to the maximum benefit because they paid the full Social Security tax on most or all of their federal earnings.
The 2026 Social Security numbers worth memorizing
| Item | 2026 Amount | Notes |
|---|---|---|
| COLA | 2.8% | Applied to all benefits starting January 2026 |
| Taxable wage base | $184,500 | Earnings above this aren't taxed for SS |
| Full Retirement Age (born 1960+) | 67 | Final step of the FRA phase-in |
| Earnings test (under FRA all year) | $24,480 | $1 withheld per $2 over (same as FERS Supplement) |
| Earnings test (year you reach FRA) | $65,160 | $1 withheld per $3 over, until the month you hit FRA |
| One credit (quarter of coverage) | $1,890 | 4 credits/year = $7,560; need 40 credits lifetime |
Why "claim at 70" is the textbook answer — and when it isn't
Delaying Social Security past Full Retirement Age earns Delayed Retirement Credits at 8% per year, up to age 70. That's a permanent benefit increase — applied for the rest of your life, with COLAs compounding on the higher base. The math is unusually clean:
- Claim at 62 (5 years before FRA): permanent reduction of roughly 30% from your FRA benefit
- Claim at FRA 67: 100% of your Primary Insurance Amount
- Claim at 70 (3 years past FRA): permanent increase of 24% above FRA
The difference between claiming at 62 and claiming at 70 is dramatic in monthly terms: a worker whose FRA benefit is $3,000/month receives roughly $2,100/month at 62 versus $3,720/month at 70 — a $1,620/month gap that persists for life. But the early claimant collects for eight extra years before the late claimant starts. The actual lifetime comparison is more nuanced than the monthly gap suggests:
| Death age | Lifetime claimed at 62 | Lifetime claimed at 70 | Net advantage of claiming at 70 |
|---|---|---|---|
| 80 | ~$454,000 | ~$447,000 | —Claiming early wins by ~$7K |
| 85 | ~$580,000 | ~$670,000 | ~$90,000 |
| 90 | ~$705,000 | ~$893,000 | ~$188,000 |
Figures use nominal (no-COLA) math for clarity; COLAs compound on the early-claimant's larger 8-year head start and somewhat reduce the late-claimer's eventual lead. The crossover age is roughly 80–82 — past that, claiming at 70 wins decisively. For federal retirees in average or better health, with longevity in their family, this is the financial argument for delaying.
Each year you delay Social Security between FRA and 70 increases your benefit by 8% permanently. Because Social Security has built-in COLAs, that 8% increase is real (inflation-adjusted). There is no commercially available product that lets you buy an inflation-adjusted income stream with a guaranteed 8% return. For federal retirees with a FERS pension already covering basic expenses and TSP balances they can draw on between MRA and 70, delaying Social Security to 70 is one of the highest-return decisions available.
The case for claiming earlier
"Claim at 70" is the right default for most healthy federal retirees with adequate non-SS resources. But it's wrong in specific situations:
- If you have a serious health concern or family longevity history under 75. The break-even age for claiming at 70 vs. 62 is roughly 80–82. If you have strong reason to believe you won't reach 80, claiming earlier produces more lifetime income.
- If you need the cash flow. Some federal retirees genuinely need Social Security income before 70 to bridge expenses. Drawing from TSP at higher rates to delay SS isn't always the right play — running TSP balances down too fast can create its own sequence-of-returns risk.
- If your spouse is the higher earner and will delay to 70. The lower earner can claim earlier (at FRA or before) without significantly hurting the household — the higher earner's record drives the survivor benefit.
- If you're divorced and entitled to a spousal benefit larger than your own. The optimization changes when ex-spouse benefits are in play.
The interaction with the FERS Supplement
For federal employees taking an immediate non-MRA+10 retirement before age 62, the FERS Supplement bridges to Social Security. Critical facts:
- The FERS Supplement ends the month before you turn 62, regardless of when you claim Social Security.
- The Supplement is NOT increased if you delay Social Security — it just ends at 62.
- Both the Supplement (while it's paid) and Social Security (if claimed early) are subject to the same $24,480 earnings test in 2026.
This means the practical question for an MRA retiree isn't "when do I claim Social Security?" — it's "what bridges me from 62 to 70?" The Supplement covers 57 to 62. After 62, you need either Social Security at 62 (early, reduced for life) or TSP withdrawals (preserving the larger Social Security benefit at 70).
The default strategy for a 20-year FERS retiree
Here's a defensible default sequence for a federal employee retiring at MRA with 20 years of service, in good health, with reasonable TSP savings:
- Age 57–62: Collect pension + FERS Supplement. Live on those plus minimal TSP withdrawals as needed. The Supplement covers a meaningful chunk of pre-Social-Security gap.
- Age 62–70: Pension continues (with 1.1% multiplier if you returned briefly to qualify) but Supplement ends. Bridge the income gap from TSP. Defer Social Security to grow the benefit by 8% per year of delay.
- Age 70+: Claim Social Security at maximum value. Pension + maxed-out Social Security + reduced TSP withdrawal rate. Most stable phase of retirement income.
Married federal retirees should pay special attention to which spouse delays Social Security. When one spouse dies, the survivor receives the larger of the two benefits — but only one, not both. If the higher earner claims at 62 and locks in a permanently reduced benefit, the surviving spouse receives that reduced amount for the rest of their life. If the higher earner delays to 70, the survivor receives the maximized benefit. For couples where one spouse out-earned the other meaningfully, the higher earner's decision to delay is effectively buying survivor insurance for the lower earner — at zero premium.
What to do now, before you retire
If you're in years 5–15 of FERS service, three Social Security moves matter today:
- Check your earnings record annually. Log into ssa.gov and pull your Social Security Statement. Verify every year of recorded earnings matches your W-2s. Errors are common and harder to fix the further back they go. SSA generally won't correct errors more than three years and three months old without overwhelming documentation.
- Track your projected benefit. The statement shows your estimated benefit at 62, FRA, and 70. Refresh this number annually so retirement modeling stays accurate.
- If you have non-federal employment that didn't pay into Social Security (state government, etc.), understand the Windfall Elimination Provision (WEP). WEP was repealed by the Social Security Fairness Act in January 2025 for most federal retirees, but the rules around residual cases and government pension offset (GPO) are complex enough to warrant a planner conversation.
Tax Strategy Across the Timeline
Most federal employees underestimate how much of their retirement wealth ends up in the hands of the IRS — and how much of that is preventable. The right tax decisions over a 20-year career can be worth more in real spendable retirement income than picking the "right" TSP fund. Here's the framework that matters.
The FERS three-legged stool — pension, TSP, Social Security — generates three different kinds of taxable income, each treated differently by federal and state tax law. Coordinating across them is where most retirement tax planning actually happens. The choices you make during your working years lock in many of those tax outcomes. Some are reversible. Many aren't.
The 2026 tax landscape, in one table
The One Big Beautiful Bill Act (OBBBA), signed in 2025, made the 2018 tax brackets permanent and added several federal-retiree-relevant provisions. Here's where things stand for 2026:
| 2026 Tax Item | Single | Married Filing Jointly |
|---|---|---|
| Standard deduction | $16,100 | $32,200 |
| Additional age-65 standard deduction | +$2,050 | +$1,650 each (per qualifying spouse) |
| OBBBA "senior bonus" deduction (ages 65+) | +$6,000 | +$12,000 |
| 12% bracket tops out at | $50,400 | $100,800 |
| 22% bracket tops out at | $105,700 | $211,400 |
| 24% bracket tops out at | $201,775 | $403,550 |
| SALT cap | $40,400 | $40,400 |
The senior-bonus deduction is temporary — available through tax year 2028 — and phases out for higher-income retirees (MAGI above $75,000 single / $150,000 MFJ). For most federal retirees claiming the standard deduction in their first years of retirement, this is meaningful: a married couple aged 65+ can deduct $32,200 base + $3,300 age-65 + $12,000 OBBBA bonus = $47,500 before any income is taxed. That's enough to cover a substantial portion of a typical FERS pension before federal tax bites.
How each income source is taxed
| Source | Federal tax treatment | State tax notes |
|---|---|---|
| FERS pension | Fully taxable as ordinary income (your contributions return tax-free pro-rata, but that's typically <5% of the annuity) | Varies by state — 9 states have no income tax; some states fully exempt federal pensions; others tax them like wages |
| FERS Supplement | Fully taxable as ordinary income | Same as pension treatment in most states |
| Traditional TSP withdrawals | Fully taxable as ordinary income | Taxable where you reside at withdrawal, regardless of where contributions were made |
| Roth TSP qualified withdrawals | Tax-free if held 5 years and account holder is 59½+ | Tax-free in virtually all states |
| Social Security | 0–85% taxable depending on "provisional income" | 13 states still tax some SS in 2026; most don't |
| Brokerage capital gains | 0%, 15%, or 20% long-term rate based on income | Generally taxed as ordinary income by states that tax income |
The IRS taxes 0%, 50%, or 85% of your Social Security benefit based on your provisional income (= AGI + nontaxable interest + half of SS). For MFJ in 2026, the thresholds are: $32,000 (below this, 0% is taxable), $44,000 (above this, up to 85% becomes taxable). A federal retiree with a $35,000 pension and $30,000 in Social Security will see roughly 85% of that Social Security taxed at their marginal rate — a tax burden that surprises most newly-retired feds. The fix isn't avoidance; it's coordinating TSP withdrawals to manage provisional income.
State tax: the biggest lever in retirement
Where you live in retirement determines whether your pension is taxed at 0% (Florida, Texas, Tennessee, Nevada, etc.), 4–6% (most states), or 9%+ (California, Hawaii). On a $30,000 pension, that's a swing of $0 to $2,700+ per year — for the next 25 years. Some specifics worth knowing:
- 9 states with no income tax: Alaska, Florida, Nevada, New Hampshire (interest/dividend only), South Dakota, Tennessee, Texas, Washington, Wyoming. Federal pension, TSP withdrawals, and SS all 0% state.
- States that fully exempt federal pensions: Illinois, Mississippi, Pennsylvania (for normal retirement age), and several others. State income tax may still apply to TSP and other income, but the pension itself is exempt.
- States that tax Social Security (in 2026): Colorado, Connecticut, Minnesota, Montana, New Mexico, Rhode Island, Utah, Vermont, and a few others — but most apply exemptions or partial taxation based on income. The list is shrinking — many states have phased out SS taxation in the last 5 years.
- Property tax: Independent of income tax. A "no income tax" state with high property tax (Texas) can be worse for a high-equity homeowner than a moderate-income-tax state with low property tax.
Federal retirees relocating from a high-tax state (CA, NY, NJ, MD, VA) to a no-tax state (FL, TX, NV, TN) routinely save $5,000–$15,000 per year in state income tax alone. Over a 25-year retirement, that's $125,000–$400,000+ in nominal terms. The decision is rarely "best state" — it's the intersection of taxes, family location, cost of living, and healthcare quality. But the tax angle is real money and worth deliberate evaluation 5–10 years before you retire, not after.
Roth conversions: the most underused tool in federal retirement
Between retirement (often age 57–62) and the start of Required Minimum Distributions (RMD age 75 for anyone born 1960 or later), most federal retirees have a "tax valley" — a low-income window where their marginal bracket is dramatically lower than it was during working years and lower than it will be once SS and RMDs both turn on.
Roth conversions during the tax valley let you voluntarily move money from Traditional TSP (or a Traditional IRA you've rolled it into) to Roth, paying the tax now at a low bracket so future withdrawals are tax-free. The math is unusually clean: if your marginal rate during the conversion is lower than your marginal rate would be when forced to take RMDs, you win.
Example: a federal retiree with $800,000 Traditional TSP and a 12% marginal rate during age 62–69 can convert $40,000/year, paying $4,800 in tax annually. Across 8 years that's $320,000 moved to Roth at a 12% cost. By the time RMDs start at 75, the converted balances grow tax-free, the RMDs themselves are smaller (because the Traditional pot was reduced), and the household's marginal rate stays manageable into the 80s.
Roth conversions count as income — and that income can push your Modified Adjusted Gross Income above Medicare IRMAA thresholds ($109,000 single / $218,000 MFJ in 2026). Crossing those thresholds triggers permanent Medicare Part B premium surcharges of $74–$443 extra per month per person. Done wrong, a conversion strategy that saves $50,000 in lifetime federal income tax can cost $20,000 in IRMAA surcharges. Run any large conversion through a tax projection that includes IRMAA brackets before pulling the trigger.
The RMD reckoning at age 73 or 75
Required Minimum Distributions are the IRS forcing you to eventually pay tax on Traditional TSP balances. The rules for federal employees in years 0–15 of service today:
- If you were born 1959 or earlier: first RMD at age 73.
- If you were born 1960 or later: first RMD at age 75 (this is most readers of this guide).
- The first-year RMD has an April 1 deadline of the following calendar year. After that, every RMD is due by December 31 of that year.
- Roth TSP and Roth IRA balances have no lifetime RMDs (as of 2024, SECURE 2.0 removed Roth 401(k)/TSP from RMD rules).
- Missed RMD penalty is 25% of the shortfall (10% if corrected promptly).
At age 75 with a $1.2M Traditional TSP balance, the first RMD divisor is approximately 24.6 — producing an RMD of about $48,800. That's $48,800 added to your taxable income in addition to your pension and Social Security, every year, growing as the divisor shrinks each year. For high-balance Traditional TSP holders this is the tax bracket-buster of retirement, and the case for Roth conversions during the tax valley is exactly to avoid this outcome.
Tax-aware withdrawal sequencing
The conventional wisdom — "spend taxable first, tax-deferred next, Roth last" — is a useful starting point but not optimal for most federal retirees. A more thoughtful sequence:
- Ages 57–62 (pre-SS): Live off pension + FERS Supplement + Traditional TSP withdrawals up to the top of the 12% bracket. Convert any remaining low-bracket capacity to Roth. Don't touch the brokerage account if it has substantial unrealized gains.
- Ages 62–73/75 (post-SS-claim, pre-RMD): Continue Traditional TSP withdrawals and Roth conversions during the lower-income years before SS is claimed. Once SS is on (around 70 for delayers), shift toward withdrawing brokerage and Traditional TSP at modest levels.
- Age 75+ (RMD years): Take RMDs as required. Supplement spending with brokerage and Roth as needed. Preserve Roth as the last bucket to draw down — it grows tax-free with no RMD pressure, and it passes to heirs more favorably than Traditional.
For most federal retirees, the single most consequential tax decision isn't fund selection, isn't Traditional-vs-Roth contribution choice, and isn't even where to live. It's whether to do nothing from 62 to 75 — letting Traditional TSP grow untouched until RMDs force the withdrawal at a high tax rate — or to proactively manage the tax valley through Roth conversions and bracket-filling withdrawals. The difference between those two paths, for a retiree with $700K+ in Traditional TSP, is typically $80,000–$150,000 of lifetime federal income tax. The work is real but the payoff is large.
The Mistakes That Wreck 20-Year Retirements
Most federal employees who end up with smaller retirements than they planned didn't make one big mistake — they made several small ones, compounding over a career. Here are the ten failure modes that hurt FERS retirees the most, ranked roughly by lifetime cost.
Letting FEHB coverage lapse inside the 5-year window before retirement
The single most expensive mistake in federal retirement. Dropping FEHB for a year on a spouse's plan, COBRA gap, or a "I'll re-enroll later" hiatus forfeits the government's premium share for life. The fix is verification 8–10 years before retirement, not 8 months before. If you discover a gap with time to spare, you can re-enroll and restart the clock.
Lifetime cost: $300K–$1MChoosing MRA+10 Immediate over Postponed Retirement
Walking out at age 57 with 15 years of service triggers a permanent 25% pension reduction. The alternative — postponed retirement — gives you the same exit timing but lets you claim the unreduced pension later. The math favors postponed for anyone expecting to live past 80, which is most federal retirees. The trade-off is no FEHB during the postponed period, but if you had 5 years of FEHB at separation you can re-enroll when the pension starts.
Lifetime cost: $40K–$200K+Front-loading TSP contributions and losing match in the final pay periods
The agency match is calculated per pay period, not annually. Federal employees who hit the $24,500 (or $32,500) elective deferral limit by July or August stop contributing for the rest of the year — and the agency match stops with them. A high earner can lose $1,500–$2,500 of free match per year this way. Spread contributions across all 26 pay periods or set the contribution percentage so you're still contributing in the final pay period of the year.
Lifetime cost: $30K–$60KSkipping TSP entirely in early career "until you can afford it"
The 5% agency match is the highest-return investment a federal employee will ever make — a guaranteed 100% return on every dollar contributed up to 5% of pay. Skipping it because "the pension is enough" or "I'll catch up later" forfeits the match permanently for those years. Years 1–5 of TSP at 5% with match plus 30+ years of compound growth produce six figures by retirement on contributions of just a few thousand dollars per year.
Lifetime cost: $80K–$140K of foregone match aloneGoing full G Fund in the final year before retirement
The instinct is correct — protect against a market crash right before retirement. The execution is wrong. Retirement is 20–30 years long; you still need equity exposure for inflation protection over that runway. Moving from 90% equities to 100% G Fund in the final months kills future growth and locks in inflation-eroding returns. A balanced glide path (60/40 or 70/30 equities/fixed income) at retirement is more defensible than full G.
Lifetime cost: $200K+ over 25-year retirementPlateauing at GS-12 in a low-locality region in years 8–15
By year 8 the trajectory becomes hard to reverse. Federal employees who get comfortable at GS-12 in a low-locality area (RUS 17.06%) end up with high-3 calculations that are tens of thousands of dollars below what a GS-13 in DC (33.94% locality) would produce. That difference echoes through pension, FERS Supplement, and Social Security calculations forever. The promotion you turned down in year 9 cost more than the comfort it preserved.
Lifetime cost: $150K–$400K in pension aloneClaiming Social Security at 62 by default
"Claim it early before it goes away" is the most common reason federal retirees give for taking Social Security at 62. The actuarial reality: SS isn't going away, the trust fund shortfall projected for the mid-2030s won't zero out benefits even if Congress does nothing, and claiming at 62 locks in a permanent 30% reduction. For healthy retirees with reasonable longevity, delaying to 70 is mathematically equivalent to buying an inflation-adjusted 8% annuity. If you don't need the cash flow, wait.
Lifetime cost: $90K–$200K+Ignoring the tax valley between retirement and RMDs
Most federal retirees have a 10–15 year window between retirement and the start of RMDs where their marginal tax bracket is unusually low. Letting Traditional TSP balances grow untouched until RMDs force the withdrawal at age 75 means paying tax on every dollar at a higher bracket later. Strategic Roth conversions and bracket-filling withdrawals during the valley convert future high-bracket income into current low-bracket income.
Lifetime cost: $80K–$150K in unnecessary federal taxVoluntarily downgrading or relocating to a lower-locality area in the final 3 years
The high-3 is the average of your highest 36 consecutive months of basic pay (including locality). For most feds that's the final 36 months. Moving to a lower-locality region, taking a step decrease for lifestyle, or accepting a less demanding role at the same grade in your final years quietly tanks the pension. A move from DC (33.94% locality) to a RUS (17.06%) region in your final three years can cost $300+/month in pension for life.
Lifetime cost: $75K–$150KTreating the FERS Supplement earnings test as theoretical
Federal retirees who take an immediate retirement at MRA and start consulting or working a second career routinely lose most of their FERS Supplement to the $24,480 earnings test. The supplement is reduced $1 for every $2 of earned income above the limit, and for someone earning $60K in consulting, that's most of the supplement gone. Plan post-retirement work around the limit, structure income as 1099 with deferral options, or simply accept that the Supplement won't apply during high-earning years.
Lifetime cost: $5K–$15K per year of high post-retirement earningsMost federal retirees who feel their retirement isn't what they planned didn't make any single mistake in this list — they made three or four small ones. Skipped TSP in years 1–4, plateaued at GS-12 in years 8–12, claimed Social Security at 62, and went all-G in the final year. Each one looks survivable in isolation. Together, they reduce a retirement by 25–35% relative to what the same career could have produced. Catching one of them in time to course-correct is meaningfully valuable. Catching three is career-changing.
The Action Checklist
Strategy without execution is just trivia. Here's what to do this week, this month, this year, and every year — pulled directly from the playbook above, organized so nothing falls through the cracks.
This Week
- Log into your TSP account and verify your current contribution percentage is at least 5% (to capture full agency match).
- Confirm your contribution percentage will not max out the $24,500 limit before the final pay period — if it would, lower it.
- Log into ssa.gov and pull your latest Social Security Statement. Check the projected benefit numbers at 62, FRA, and 70.
- Verify the GA4 enrollment status in your eOPF — make sure you have continuous FEHB coverage on record.
This Month
- Calculate your current high-3 estimate using your three highest-paid years (with locality included). Save this number.
- Run your FERS pension projection at three exit ages: MRA, age 60, and age 62. Note the difference.
- If you're at GS-12 and over 8 years in, identify the next promotion opportunity in your agency or another agency. Apply.
- Audit your TSP fund allocation against the suggested glide path for your current career year. Rebalance if you've drifted toward G/F too early.
- Pull your FEHB enrollment history from eOPF and verify there are no gaps.
This Year
- Increase your TSP contribution percentage by at least 1–2 points if you're below the $24,500 max.
- If you're 50 or older this year, turn on the age-50 catch-up contribution (+$8,000 in 2026).
- Run a Traditional vs. Roth TSP analysis based on your current marginal bracket and your expected retirement state.
- Verify your TSP beneficiary designation is current — life events (marriage, divorce, children) invalidate old designations.
- Check your Social Security earnings record for the previous year against your W-2. Errors are easier to fix in the first 3 years.
- If you're within 5 years of retirement, request an OPM benefits estimate.
Every Year, Forever
- Verify your FEHB enrollment is uninterrupted. Never let it lapse for any reason inside the 10-year pre-retirement window.
- Update your retirement income projection with current salary, current TSP balance, and current Social Security estimate.
- Review your TSP allocation and rebalance if needed. Don't switch based on news cycles.
- During Open Season (Nov–Dec), evaluate whether your FEHB plan still fits your situation. Switch if a better option exists.
- Track FERS, TSP, and Social Security rule changes — they shift annually with inflation adjustments and occasional legislative changes.
The 5-Year and 2-Year Pre-Retirement Audits
- 5 years out: Confirm FEHB 5-year clock is on track. Begin shifting TSP allocation slightly more defensive (75/25 if currently 90/10).
- 2 years out: Lock the high-3 — do not voluntarily downgrade, relocate to lower locality, or take step decreases.
- 18 months out: Submit OPM benefits estimate request and verify retirement application paperwork.
- 1 year out: Finalize FEGLI elections (most retirees overpay here — review carefully). Audit FSA, dental, vision elections.
- 6 months out: Submit retirement application to your HR shop. Begin the OPM processing window.
FAQ
The questions federal employees actually ask when they're trying to plan a 20-year retirement — answered straight.
Can I retire at MRA with 20 years and get an unreduced pension?
No. MRA with 20 years of service triggers the MRA+10 immediate retirement rules, which means a 5% per-year permanent pension reduction for every year you're under age 62. To retire unreduced before age 60, you need MRA+30. To retire unreduced at age 60, you need 20 years. To retire unreduced at age 62, you need 5 years. Anything else gets some form of reduction or postponement.
What's the difference between 20 years and 30 years of service?
Twenty years unlocks the 1.1% multiplier at age 62 (a 10% permanent pension boost) and the 60+20 path to immediate unreduced retirement. Thirty years unlocks immediate unreduced retirement at MRA itself — meaning you can walk out at 57 with no reduction. For each year between 20 and 30, you're adding 1.0% (or 1.1% at 62+) of your high-3 to your pension. The decision is whether the extra years past 20 are worth the additional pension and supplement.
Is the FERS Supplement going away?
Several recent legislative proposals have aimed to eliminate or reduce the FERS Supplement, and one version was included in early 2025 reconciliation drafts but didn't make the final OBBBA legislation. As of 2026, the Supplement is unchanged for new retirees. Future legislative changes are possible but the supplement's status for existing retirees has generally been protected. Plan around the rules as written, watch for changes, and don't make major decisions based on speculation.
Can I roll my Traditional TSP into a Roth IRA after retirement?
Yes — but the conversion is fully taxable in the year you do it. The tax bill on a $500,000 Traditional TSP rollover would be enormous if done in one year. The strategy most federal retirees use is partial Roth conversions during the tax valley (between retirement and RMDs), converting amounts that keep them within a manageable tax bracket. See Section 7 for the framework.
Do I have to take the FERS Survivor Benefit?
No, but the default is to elect it if you're married. The maximum survivor benefit (50% of your annuity to your spouse after death) costs you 10% of your gross annuity for life. The lower option (25% survivor) costs 5%. With spousal consent and a notarized waiver, you can elect no survivor benefit — but doing so eliminates your spouse's FEHB eligibility after your death, which is usually a worse trade than the 10% annuity reduction.
How does sick leave convert into retirement credit?
Unused sick leave at retirement converts into additional service credit at the rate of approximately 174 hours = 1 month of service (per OPM's 2087-hour conversion chart). For a federal employee retiring with 1,500 hours of sick leave, that's about 8 months and 17 days of additional service credit — worth roughly 0.7% of high-3 to your annual pension for life. Use sick leave conservatively in your final years; the unused balance is real pension dollars. Important: only sick leave at the time of an immediate retirement counts. If you take a deferred retirement, you lose sick leave credit entirely.
What happens if I leave federal service before MRA but with more than 5 years?
You're eligible for a deferred retirement — your FERS pension is preserved and you can claim it at age 62 (or age 60 if you have 20+ years, with MRA+10 reductions applying if claimed earlier). But you lose FEHB, FEGLI, and FEDVIP permanently, you don't get the FERS Supplement, and you don't get COLAs until age 62. If you might come back to federal service later, leave your contributions in the system. Don't take a refund — it forfeits the pension entirely.
Can I work after retiring and still collect my pension?
Yes, but with rules. Private-sector work has no effect on your FERS pension itself. The FERS Supplement (paid between MRA retirement and age 62) is reduced $1 per $2 of earned income above $24,480 in 2026. Returning to federal service triggers different rules — potentially with pension offset or annuity reductions depending on the position. If you re-employ as a federal employee after retirement, talk to OPM and your HR shop before accepting.
What about military buyback for prior service?
Active-duty military service can be "bought back" for FERS credit. You pay 3% of your military base pay (plus interest), and that period of service is added to your years of service for FERS pension calculations. For most veterans, the buyback is one of the highest-ROI moves available — 4 years of military buyback added to a 16-year civilian career produces 20 years of FERS service. Run the math; in nearly all cases, the buyback pays for itself many times over.
Does my agency match Roth TSP contributions or just Traditional?
The agency match is the same dollar amount regardless of whether your contribution is Traditional or Roth — but the match itself is always deposited into the Traditional sub-account. This means even if you choose 100% Roth TSP for your own contributions, you'll end up with both Traditional and Roth balances at retirement. This is fine and actually useful for tax-bracket optimization later.
When should I switch from C Fund to G Fund as I near retirement?
Never abruptly, and never to 100% G. A reasonable glide path moves from ~90% equities at year 10 to ~70% equities at retirement to ~50–60% equities by age 75. Retirement is 25+ years long — you still need equity growth to offset inflation. The biggest mistake federal retirees make is full G Fund in the final year, which locks in low real returns for the rest of their lives.
What's the single best move I can make right now?
For most federal employees in years 0–15 of service: verify your FEHB enrollment is continuous and has no gaps. The 5-year rule is the most expensive failure mode in federal retirement, and it's invisible until it's too late. After that, max your TSP match if you aren't already (5% minimum). Those two moves together prevent the two most costly mistakes in this playbook.