The FERS Pension Formula
Your FERS pension is a defined benefit — meaning it's calculated by a formula, not by investment performance. Unlike your TSP, it doesn't go up or down with the market. Once you retire, you receive it for life.
The formula has three variables:
FERS Pension Examples
Here's what the formula produces for federal employees at different income and service levels:
| High-3 Salary | Years of Service | Retirement Age | Multiplier | Annual Pension | Monthly Pension |
|---|---|---|---|---|---|
| $125,000 | 20 years | 60 | 1.0% | $25,000 | $2,083 |
| $125,000 | 25 years | 60 | 1.0% | $31,250 | $2,604 |
| $140,000 | 25 years | 62 | 1.1% | $38,500 | $3,208 |
| $155,000 | 30 years | 62 | 1.1% | $51,150 | $4,263 |
| $170,000 | 30 years | 62 | 1.1% | $56,100 | $4,675 |
| $185,000 | 32 years | 62 | 1.1% | $65,208 | $5,434 |
Understanding Your High-3 Average Salary
Your High-3 is the average of your three highest consecutive years of basic pay. For most federal employees, this is their final three years before retirement — when salary is typically at its peak.
What Counts Toward High-3
- Base salary
- Locality pay
- Night differential (for certain positions)
- Within-grade step increases
- Promotions and grade increases
- Overtime pay
- Performance bonuses
- Cash awards
- Recruitment or retention incentives
- Travel reimbursements
How to Estimate Your High-3
If you plan to retire within the next 3 years, your High-3 will be close to your current salary — typically 97–99% of your current base pay depending on any recent increases. Our FERS calculator uses 97% of current salary as the default estimate, which is conservative and appropriate for planning purposes.
FERS Minimum Retirement Age (MRA) and Retirement Options
Unlike many pension systems, FERS has a flexible retirement structure with several pathways. The right one for you depends on your age, years of service, and financial readiness.
FERS Minimum Retirement Age by Birth Year
| Birth Year | Minimum Retirement Age (MRA) |
|---|---|
| Before 1948 | 55 |
| 1948 | 55 years, 2 months |
| 1949 | 55 years, 4 months |
| 1950 | 55 years, 6 months |
| 1951 | 55 years, 8 months |
| 1952 | 55 years, 10 months |
| 1953–1964 | 56 |
| 1965 | 56 years, 2 months |
| 1966 | 56 years, 4 months |
| 1967 | 56 years, 6 months |
| 1968 | 56 years, 8 months |
| 1969 | 56 years, 10 months |
| 1970 and later | 57 |
FERS Retirement Options
The Survivor Benefit Plan (SBP): The Decision You Can't Undo
At retirement, you must elect whether to provide a survivor annuity to your spouse. This is one of the most consequential — and permanent — decisions in your federal retirement. Once you retire, the SBP election cannot be changed except in very limited circumstances.
SBP Options
| Election | Survivor Receives | Your Monthly Cost | Key Consideration |
|---|---|---|---|
| Full SBP | 55% of your full pension for life | ~6.5% of pension above threshold | Maximum protection for spouse |
| Partial SBP | 55% of a reduced base amount | Lower than full SBP | Reduces both cost and survivor benefit proportionally |
| No SBP | Nothing — pension stops at your death | $0 | Spouse must consent in writing; consider private life insurance alternative |
SBP vs. Private Life Insurance — Which Wins?
SBP is a guaranteed, inflation-adjusted lifetime annuity for your spouse. Private life insurance pays a lump sum death benefit. Neither is universally better — the right answer depends on your age, health, pension amount, and spouse's financial situation.
SBP Advantages
- No medical underwriting — guaranteed regardless of health
- Inflation-adjusted (COLAs applied to survivor benefit)
- Lifetime benefit — spouse can't outlive it
- Premiums paid pre-tax from pension
Private Life Insurance Advantages
- Lump sum gives spouse full control of assets
- May be less expensive for healthy employees under 60
- Benefit doesn't disappear if spouse remarries
- Can be invested for potentially higher lifetime value
The FERS Income Gap: What Most Federal Employees Don't See Coming
Here is the most important number in your retirement planning — one that surprises almost every federal employee we work with:
That gap — the difference between what your pension pays and what you need — has to come from somewhere. For most federal employees it comes from three sources:
Your Thrift Savings Plan is the primary tool for closing the income gap. But how you draw it down — and whether you roll it to an IRA first — has major tax implications.
Federal employees earn Social Security in addition to FERS. Timing your claim optimally — and coordinating it with the FERS Supplement — can add significantly to lifetime income.
Fixed Indexed Annuities can convert a portion of TSP into guaranteed lifetime income — closing the gap permanently without depleting principal in a market downturn.
Calculate My Income Gap →
The Age 59½ Opportunity: The Move Most Federal Employees Miss
At age 59½, you become eligible for an in-service withdrawal from your TSP — meaning you can roll TSP funds to an IRA without penalty and without leaving federal service.
This is one of the most underutilized planning opportunities in the federal benefits system. Here's why it matters:
Roll TSP to a Traditional IRA
A direct rollover from TSP to IRA is tax-free and penalty-free at 59½. You stay employed and continue receiving your salary and benefits.
Access Roth Conversion Strategies
Inside an IRA you can begin phased Roth conversions — converting traditional IRA funds to Roth annually, filling your current tax bracket without pushing into the next one.
Access Fixed Indexed Annuities
FIAs are not available inside TSP. Rolling to an IRA opens access to products that offer upside participation with a 0% floor — protecting against market losses while allowing growth.
Reduce Future RMD Burden
Every dollar converted to Roth before age 73 eliminates a future Required Minimum Distribution — reducing the tax hit from pension + TSP RMDs + Social Security stacking in retirement.
FERS Pension FAQs
Does FERS pension get a cost-of-living adjustment (COLA)?
Yes, but with limitations. FERS retirees under age 62 receive no COLA. At age 62 and older, FERS COLAs are calculated as follows: if inflation (CPI-W) is 2% or less, the full COLA applies. If CPI-W is between 2–3%, the FERS COLA is 2%. If CPI-W exceeds 3%, the FERS COLA is CPI-W minus 1%. This means FERS retirees receive less inflation protection than CSRS retirees, which makes TSP and other income sources more important.
What happens to my FERS pension if I die before retiring?
If you die in service with at least 18 months of federal service, your surviving spouse may be eligible for a Basic Employee Death Benefit plus a survivor annuity. The annuity equals 50% of your earned pension if you had 10+ years of service. Your children may also be eligible for survivor benefits. FEGLI life insurance is separate and pays in addition to any survivor annuity.
Can I work after retiring and still collect my FERS pension?
Generally yes — you can work in the private sector and collect your full FERS pension simultaneously. However, if you return to federal employment, your pension may be offset. The FERS Supplement (if applicable) is subject to an earnings test similar to Social Security — if you earn more than the annual limit (~$22,000 in 2024), the supplement is reduced $1 for every $2 earned above the threshold.
Is my FERS pension taxable?
Yes — FERS pension income is fully taxable as ordinary income at the federal level. Most states also tax FERS pension income, though some states exempt government pensions partially or fully. Colorado, for example, allows a pension exclusion for taxpayers over 55. Your pension income stacks on top of TSP distributions and Social Security — which is why tax planning before retirement is critical for federal employees.
What is the difference between FERS, FERS-RAE, and FERS-FRAE?
All three systems use the same pension formula — the difference is only in the employee contribution rate. FERS (hired before 2013) contributes 0.8% of salary. FERS-RAE (hired in 2013) contributes 3.1%. FERS-FRAE (hired 2014 and later) contributes 4.4%. The higher contribution rates for newer employees do not produce a higher pension — the formula is identical. This is a common source of confusion.
How long does OPM take to process my retirement?
OPM retirement processing times typically run 60–90 days for straightforward cases, but can extend to 6 months or longer for complex situations. During this period you receive interim payments — typically 70–80% of your estimated full pension. Planning your cash flow around this gap is important. Most financial planners recommend having 3–6 months of expenses in liquid savings before submitting your retirement application.