Federal Retirement Planning: FERS Pension, TSP Rollover & CSRS Guide
Federal employees covered by FERS (Federal Employees Retirement System) or CSRS (Civil Service Retirement System) face retirement decisions unavailable to private-sector workers: an irreversible survivor benefit election, a TSP rollover-to-IRA decision worth hundreds of thousands, a FERS supplement that bridges to Social Security, and FEHB health insurance that can continue through retirement. This guide covers CSRS vs FERS retirement differences, how to calculate your federal retirement annuity estimate, TSP withdrawal options and tax implications, FERS supplement calculator guidance, and survivor benefit plan elections for federal employees. Use the Federal Retire Stack tool above for your personalized FERS retirement analysis. RetireStack is not affiliated with OPM or TSP. [SEEK EXPERT ADVICE] for your specific situation.
Federal Retirement Is Uniquely Complex
FERS employees have three income legs: their pension, Social Security, and TSP. CSRS employees have a generous pension but no Social Security. Both groups face decisions most financial advisors have never seen before.
The FERS Supplement timing. TSP withdrawal sequencing. FERS annuity computation factors. CSRS offset rules. These aren't issues you can Google your way through — you need a specialist.
Most annuity providers have generic product pitches. A few have built specialized teams who work exclusively with federal employees. We've found them.
"RetireStack does not sell annuities and receives no commission on your purchase. We earn a referral fee for connecting you with a specialist — we disclose this because transparency is everything."
Which System Applies to You?
Understanding your retirement system is the foundation of every annuity decision.
FERS
Federal Employees Retirement System (1987–present). Three-legged system: Basic Annuity + Social Security + TSP. Most federal workers hired after 1983 are under FERS.
CSRS
Civil Service Retirement System (pre-1984). Generous defined benefit pension — often 60–80% of high-3 salary. No Social Security. No TSP matching.
TSP
Thrift Savings Plan — the federal government's 401(k) equivalent. Upon retirement, TSP can be kept, withdrawn, or rolled over to an IRA to purchase an annuity.
FERS vs CSRS: The Complete Comparison
Understanding these two systems is the foundation of every federal retirement decision. Here are the key differences that affect your annuity strategy.
| Feature | FERS (1987–present) | CSRS (pre-1984) |
|---|---|---|
| Pension Formula | 1% × High-3 × Years of Service (1.1% if 20+ yrs & retire at 62+) | 1.5–2.5% × High-3 × Years (sliding scale) |
| Social Security | ✅ Full Social Security eligibility | ❌ Not eligible (WEP/GPO may reduce if other work) |
| TSP Matching | ✅ Up to 5% agency match | ❌ No TSP matching |
| Pension % of Salary | Typically 20–40% (lower pension, offset by SS + TSP) | Typically 60–80% (generous pension is primary income) |
| Employee Contribution | 0.8% of salary (most employees) | 7% of salary |
| Minimum Retirement Age | 55–57 depending on birth year (MRA) | 55 with 30 yrs service; 60 with 20 yrs; 62 with 5 yrs |
| COLA (Inflation Adj.) | COLA starts at age 62 (not before) | Full COLA immediately upon retirement |
| FERS Supplement | ✅ Bridges income gap until SS at age 62 | ❌ N/A (no Social Security to bridge to) |
How Your Federal Pension Is Calculated
The pension formulas are straightforward — but the details matter. Here's exactly how OPM calculates your annuity under each system, with real examples.
🏛️ FERS Pension Formula
Enhanced: 1.1% × High-3 × Years
(Enhanced rate if you retire at 62+ with 20+ years)
Worked Example
Sarah is a federal employee retiring at age 58 with 28 years of service. Her average salary over the last three years (High-3) was $92,000.
If Sarah waits until 62: 1.1% × $92,000 × 28 = $28,336/year ($2,361/month) — a 10% boost for waiting four more years.
📜 CSRS Pension Formula
Next 5 years: 1.75% × High-3 × 5 = 8.75%
Remaining years: 2% × High-3 × remaining
Cap: 80% of High-3 average salary
Worked Example
Robert is a CSRS employee retiring at 60 with 32 years of service. His High-3 average salary is $98,000.
What Is the "High-3" Salary?
Your "High-3" is the average of your highest three consecutive years of basic pay — not necessarily your last three years. For most federal employees who received regular step increases, the High-3 will be the final three years. But if you were ever on a period of lower pay (e.g., part-time, leave without pay, or a demotion), OPM will calculate the actual highest consecutive 36-month average.
What counts as "basic pay": Your base salary, including locality pay. Does not include overtime, bonuses, allowances, or differentials. For most GS employees, locality pay is included — this matters significantly in high-cost areas like Washington DC, New York, and San Francisco where locality adjustments can add 30%+ to base pay.
FERS Minimum Retirement Age (MRA) by Birth Year
| Birth Year | MRA | Immediate Retirement Requires |
|---|---|---|
| Before 1948 | 55 | 30 yrs service at MRA, or 20 yrs at age 60 |
| 1948 | 55 + 2 months | 30 yrs service at MRA, or 20 yrs at age 60 |
| 1949–1952 | 55 + 2 months/yr | 30 yrs service at MRA, or 20 yrs at age 60 |
| 1953–1964 | 56 | 30 yrs service at MRA, or 20 yrs at age 60 |
| 1965–1969 | 56 + 2 months/yr | 30 yrs service at MRA, or 20 yrs at age 60 |
| 1970 or later | 57 | 30 yrs service at MRA, or 20 yrs at age 60 |
Source: OPM.gov. Note: You can retire at any age with 5 years of service under FERS (called a "deferred retirement"), but benefits are delayed until age 62.
The FERS Supplement: Bridging the Social Security Gap
The FERS Special Retirement Supplement (SRS) is a monthly payment that approximates the Social Security benefit you earned during your federal service. It's paid from the date of retirement until age 62 — when you first become eligible for Social Security. Here's how it works:
OPM estimates your Social Security benefit (if you had worked your entire career in Social Security-covered employment), then multiplies by the fraction of your career spent in federal service. Example: If your estimated SS benefit would be $2,000/mo and you worked 30 of 40 potential years as a federal employee, your supplement = $2,000 × (30/40) = $1,500/mo.
The FERS Supplement is subject to the Social Security earnings test. If you earn more than $22,320/year (2025 limit) from wages after retirement, your supplement is reduced $1 for every $2 you earn above the limit. This is a critical planning consideration for those who plan to work part-time after leaving federal service.
Annuity strategy implication: If you plan to work after retiring from federal service, the supplement may be reduced or eliminated. A deferred income annuity can fill the income gap during the years the supplement is reduced — giving you flexibility to earn without sacrificing retirement income.
The Survivor Benefit Decision: Getting It Right
One of the most consequential (and irreversible) choices federal retirees make is the survivor benefit election. Here's what FERS and CSRS employees need to know.
Spouse receives 50% (FERS) or 55% (CSRS) of your unreduced pension after your death. Cost: 10% reduction to your own pension.
Spouse receives 25% of base pension. Cost: 5% reduction to your own pension. FERS only option.
Spouse receives nothing from your pension after death. Requires spousal consent in writing.
The annuity alternative: Many federal retirees choose a reduced survivor benefit (or none at all) and instead purchase a joint-life annuity with a portion of their TSP balance. This can provide equivalent protection for the survivor while allowing the retiree to keep their full pension check. The math depends on annuity rates, age difference between spouses, and TSP balance size — a specialist can model this for your specific situation.
COLA Adjustments: FERS vs CSRS
Cost of Living Adjustments work fundamentally differently under the two systems — and the gap matters most during inflationary periods.
📜 CSRS COLA
Starts immediately on retirement day one. No age requirement.
🏛️ FERS COLA
CPI-W ≤ 2%: full COLA | CPI-W 2–3%: 2% cap | CPI-W > 3%: COLA = CPI-W − 1%
Why This Matters for Your Annuity Strategy
A FERS employee retiring at 57 receives zero COLA for 5 years. At 3% annual inflation, their pension buys 14% less by the time COLA kicks in at 62. This is a real, quantifiable loss — and it's exactly the gap a fixed indexed annuity (FIA) is designed to fill. FIAs can provide inflation-linked interest credits tied to market indices, capped on the downside at zero, protecting the real value of your retirement income during the no-COLA window.
CSRS employees face a different challenge: their generous COLA-adjusted pension can be reduced by the Windfall Elimination Provision (WEP) if they have some Social Security-covered employment history. Annuities help CSRS retirees diversify away from sole reliance on the pension.
How Federal Employees Use Annuities
Four proven strategies used by federal retirees to maximize guaranteed income.
FERS Supplement Bridge
The FERS Supplement ends at age 62. If you retire at 56–58, you face a 4–6 year gap. A deferred income annuity funded by your TSP can fill this income gap, paying you guaranteed monthly income until Social Security kicks in.
Best for: FERS early retirees at MRATSP Rollover to Lifetime Income
Roll your TSP into an IRA, then purchase a fixed indexed annuity with a lifetime withdrawal benefit. This creates a second pension-like income stream on top of your FERS annuity — potentially 5–7% of rollover value per year, guaranteed for life.
Best for: FERS employees with large TSP balancesCSRS Longevity Hedge
CSRS retirees receive no Social Security. If you live past 85+, your fixed CSRS pension may feel thin vs. inflation. A deferred income annuity starting at 80+ (a "longevity annuity") provides catastrophic longevity protection at very low cost.
Best for: CSRS employees concerned about living longSurvivor Benefit Supplement
If you elect a reduced FERS survivor benefit to protect your spouse, a joint life annuity can supplement this income. It keeps your full FERS pension check while still providing your spouse income after your death.
Best for: Married FERS/CSRS employeesFederal Employee Specialists
Two providers stand out for their deep expertise in FERS, CSRS, and TSP rollover planning.
TIAA has served government and non-profit employees since 1918. Their specialists have decades of experience specifically with FERS, CSRS, and TSP rollovers — they know the rules better than most OPM employees.
MassMutual's federal employee team handles FERS and CSRS planning as a specialty practice. As a mutual company, they have no outside shareholders — profits go back to policyholders in the form of dividends.
How to Roll Your TSP Into an Annuity
Rolling your TSP into an annuity is a 4-step process. Done correctly, it's tax-free, penalty-free, and creates guaranteed lifetime income from your federal savings.
Request a TSP Direct Rollover to a Traditional IRA (not Roth unless funds are already Roth)
IRA custodian receives funds within 60 days — no taxes withheld on direct rollover
Work with a specialist to purchase annuity inside IRA — funds transfer directly
Annuity begins income stream at your chosen age — guaranteed for life
Federal Retirement Annuity FAQ
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Five Tools Every Federal Employee Needs
Run interactive calculations for every major decision in your federal retirement — pension, TSP, survivor benefit, FEHB, and FEGLI. No login required.
FERS Annuity Estimator
Calculate your monthly FERS pension using your High-3, years of service, and planned retirement age. Compare pre-62 vs. 62+ multipliers and model VERA scenarios.
Run Estimator →TSP Rollover Analyzer
Compare keeping your TSP (G/L Fund stability, age-55 rule, no RMD account minimums) vs. rolling to an IRA for private annuity access, broader investments, and Roth conversion flexibility.
Analyze My TSP →Survivor Benefit Calculator
Model the 50% vs. 25% vs. no survivor election. Calculate the break-even year, total lifetime payout difference, and whether a private annuity could provide equivalent protection at lower cost.
Run Break-Even →FEHB Eligibility Checker
Verify your 5-year enrollment requirement, check coordination with Medicare at 65, and model whether adding Medicare Part B saves or costs money based on your specific FEHB plan and health profile.
Check My FEHB →FEGLI Retirement Analyzer
Model FEGLI Basic coverage reduction at 65, calculate Option B age-band cost escalation after 50, and compare keeping government coverage vs. purchasing private insurance now.
Analyze My FEGLI →Federal Retire Stack — All-in-One Flow
Run all five analyses in a single AI-guided session. FERS/CSRS pension + TSP strategy + survivor election + FEHB check + FEGLI analysis + advisor matching in one flow.
Run the Full Stack →FEHB in Retirement: The 5-Year Rule and Medicare Decision
[LAST UPDATED: April 2026] [VERIFIED] — Rules sourced from OPM FEHB regulations. Individual plan details vary. [SEEK EXPERT ADVICE] on Medicare Part B enrollment timing — penalties are permanent.
Federal employees covered by the Federal Employees Health Benefits (FEHB) Program can carry their health insurance into retirement — one of the most valuable benefits in the federal compensation package. The government continues paying approximately 72% of your FEHB premium in retirement, the same employer share as during employment. This is not offered in most private-sector retirements.
You must have been continuously enrolled in FEHB (or covered as a family member) for the five consecutive years immediately before the date of your retirement. If you were not enrolled for five years, you lose FEHB in retirement permanently. There is no exception or waiver available for most employees. If you have fewer than 5 years remaining, enrolling or re-enrolling now and holding through retirement is critical. [SEEK EXPERT ADVICE] if you have any gap in coverage.
FEHB Premium Costs: What Changes in Retirement
- Employee pays ~28% of premium
- Deducted pre-tax from paycheck
- Open season every November
- Qualifying life events allow mid-year changes
- Same ~72%/~28% employer/employee split
- Premium deducted from annuity, after-tax
- Same plans remain available
- Cannot enroll in new plans outside open season
- Medicare Part A is premium-free (if 40 work quarters)
- FEHB + Part A covers most costs as dual coverage
- Medicare Part B costs $185/month [ESTIMATE, 2026]
- Most federal retirees skip Part B unless heavy medical users
Should You Enroll in Medicare Part B?
This is one of the most consequential, time-sensitive decisions federal retirees face. If you decline Medicare Part B at 65 and want it later, you pay a permanent 10% penalty for every 12 months you were eligible but not enrolled. The decision framework:
- Have high expected medical utilization
- Enrolled in Blue Cross Standard or another plan where Part B significantly reduces out-of-pocket costs
- Plan to travel or live outside service areas frequently
- Want maximum coverage for catastrophic events
- Are enrolled in a low-deductible FEHB plan with good catastrophic protection
- Are healthy with low expected utilization
- Cannot afford $185+/month additional premium
- Would pay more in Part B premiums than you'd save in cost-sharing
[SEEK EXPERT ADVICE] — A federal benefits counselor or SHIP (State Health Insurance Assistance Program) counselor can model your specific FEHB plan against Part B costs before the enrollment window closes.
Check your FEHB 5-year eligibility and model Medicare Part B coordination:
Use FEHB Eligibility Checker →FEGLI in Retirement: Coverage Reductions, Cost Escalation, and the Replacement Decision
[LAST UPDATED: April 2026] [VERIFIED] — Premium rates from OPM FEGLI actuarial schedules. [ESTIMATE] labels used on specific premium figures. [SEEK EXPERT ADVICE] before making irrevocable coverage elections.
FEGLI (Federal Employees' Group Life Insurance) is term life insurance. It does not accumulate cash value. To carry it into retirement, you must have been enrolled for the five consecutive years before retirement (same rule as FEHB). The critical planning issue: FEGLI coverage begins shrinking at age 65, and Option B premiums increase sharply with every age band.
Basic Coverage: Three Reduction Elections
Your Basic life insurance coverage amount (salary + $2,000, rounded up to nearest $1,000) automatically reduces at age 65 unless you made a different election when you retired. The three options:
Coverage stays at 100% of the face amount for life. Highest cost. Best if health prevents you from obtaining private insurance and you have dependents with ongoing financial needs.
Coverage reduces 2% per month from age 65 until it reaches 25% of face amount. Premium-free after 65. Default election if no choice was made. Appropriate if you want some residual coverage at minimal cost.
Coverage reduces 2% per month from age 65 until it reaches zero. Premium-free after 65. You end up with no life insurance. Only appropriate if you have no dependents and no estate planning needs.
Option B: The Premium Escalation Problem
Option B (Additional Optional Insurance) lets you elect 1x to 5x your salary in additional coverage. But unlike Basic, Option B costs escalate by age band and do not become free after 65. The cost roughly doubles every five years after age 50. Here's the OPM biweekly premium rate per $1,000 of coverage by age band [ESTIMATE — verify current rates at opm.gov]:
| Age Band | Biweekly Rate per $1,000 | Annual Cost on $100K Coverage | vs. Age 45–49 |
|---|---|---|---|
| Under 35 | $0.043 | $112 | — |
| 35–39 | $0.065 | $169 | — |
| 40–44 | $0.108 | $281 | — |
| 45–49 | $0.173 | $450 | Baseline |
| 50–54 | $0.390 | $1,014 | 2.3× |
| 55–59 | $0.693 | $1,802 | 4.0× |
| 60–64 | $1.040 | $2,704 | 6.0× |
| 65+ | $2.167 | $5,634 | 12.5× |
[ESTIMATE] Rates sourced from OPM FEGLI premium tables. Rates are subject to change. Verify at opm.gov/healthcare-insurance/life-insurance before making coverage decisions.
The FEGLI Decision: Keep, Reduce, or Replace?
By retirement, most federal employees' children are independent and mortgage is paid or low. If your spouse has independent income (including their own pension) and you have sufficient assets, you may need minimal or no life insurance. Removing unneeded coverage saves premium dollars that could fund retirement income.
If you are in good health and still under 65, compare Option B premiums against a private 10- or 20-year level term policy. For many federal employees in their 50s, a private term policy purchased now is substantially cheaper than FEGLI Option B and stays level for the term.
FEGLI has no medical underwriting — you are guaranteed coverage regardless of health. If your health makes private insurance unaffordable or unavailable, keeping FEGLI at the No Reduction election may be the only path to permanent coverage. This is the strongest argument for retaining full FEGLI.
Model your FEGLI Option B cost escalation and compare with private alternatives:
Use FEGLI Retirement Analyzer →