Social Security for Federal Employees: WEP Repeal, FERS Supplement, and Timing Strategy (2026)

Social Security works differently depending on whether you're under FERS or CSRS — and the rules changed significantly in January 2025 when Congress repealed the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO). If you're CSRS or CSRS Offset, your SS benefit may now be higher than you were told it would be. If you're FERS, the interaction between the FERS supplement and SS timing is the most consequential retirement decision most federal employees make.

FERS vs. CSRS: how your retirement system shapes your SS relationship

FERS employees pay full Social Security taxes on every dollar of federal pay. SS is engineered into FERS as the third leg of the stool — alongside the basic annuity and TSP. Your SS benefit is calculated the same way as any private-sector worker's: based on your 35 highest-earning years. No penalty, no offset. The WEP repeal didn't change anything for you directly, though it helps FERS employees who also worked non-covered jobs.

CSRS employees (hired before 1984) did not pay SS taxes on federal salary. If you also worked in SS-covered employment — private-sector jobs, self-employment, part-time work — you earned an SS benefit. Until 2025, that benefit was reduced by WEP. Now it isn't.

CSRS Offset employees paid SS taxes on salary above an annual threshold during the period when OPM transitioned the workforce to FERS. Their SS is calculated normally, and the WEP penalty that used to apply is now repealed. Note: at age 62, OPM reduces the CSRS Offset annuity by the SS amount attributable to Offset service — this "Offset reduction" is separate from WEP and is still in effect.

The WEP/GPO repeal — what actually changed

The two repealed provisions worked like this:

• Windfall Elimination Provision (WEP): Reduced your own SS retirement benefit if you had a pension from non-SS-covered work (like a CSRS pension). The maximum WEP reduction in 2024 was $621/month — a significant cut for retirees who also worked private-sector jobs and expected reasonable SS income.
• Government Pension Offset (GPO): Reduced SS spousal or survivor benefits by two-thirds of your government pension. For CSRS spouses receiving a meaningful federal pension, this often eliminated SS survivor benefits entirely.

Both are now fully gone.¹ The repeal is retroactive to January 2024 — SSA calculated back-pay covering the 12 months between when the higher benefit would have started and when the law was signed. Most affected beneficiaries received these lump sums by mid-2025, though some cases with complicated work histories are still being processed.

FERS employees: the supplement and the age-62 cliff

If you retire from FERS before age 62 — common if you hit MRA (Minimum Retirement Age, 57 for most active employees) with 30 years of service — OPM pays a FERS Special Retirement Supplement (SRS) alongside your basic annuity. The supplement bridges the SS gap until age 62.

Supplement formula

OPM calculates the supplement as an approximation of what your SS benefit would be based on FERS service only:

Supplement ≈ (Estimated SS benefit at age 62) × (FERS years of service ÷ 40)

A GS-14 with 30 years of FERS service and an estimated SS benefit of $2,400/month at 62 would receive approximately $2,400 × (30 ÷ 40) = $1,800/month from the supplement. OPM calculates this — you don't need to estimate it, but understanding the formula helps you see how working longer affects the number.

2026 earnings test: $24,480

The supplement is subject to an annual earnings test identical to Social Security's. If you work after retirement, you lose $1 of supplement for every $2 you earn above the exempt amount.

2026 annual exempt amount: $24,480.² Example: earning $38,000 in a post-retirement consulting role reduces your supplement by ($38,000 − $24,480) ÷ 2 = $6,760/year.

Investment income, TSP distributions, pension income, and rental income do not count toward the earnings test. Only wages and self-employment income count.

The supplement stops entirely at age 62 — regardless of whether you file for Social Security. Delaying your SS claim does not extend the supplement.

SS timing strategy for FERS retirees

Once the supplement ends at 62, the classic question becomes: file now at a reduced benefit, or wait for a higher one?

FRA and the delayed retirement credit

For most active federal employees born 1960 or later, Full Retirement Age (FRA) is 67.³ Filing between 62 and 67 permanently reduces the monthly benefit. Delaying past 67 earns 8% per year in Delayed Retirement Credits (DRCs), up to age 70.⁴

Break-even: delaying from 62 to 67

Using the table above: waiting from 62 to 67 means forgoing $1,400/month for 60 months = $84,000 in foregone benefits. The payoff is $600/more per month for the rest of your life. Break-even: $84,000 ÷ $600 = 140 months after age 67, which is age 78.7. If you expect to live past 79, waiting generally wins. SSA's actuarial tables put life expectancy for a 65-year-old at roughly 83–85 years, so most people break even.

The gap: supplement ends at 62, SS later

If you retire at MRA (57) under FERS with 30 years and plan to delay SS to 70, here's what your income looks like across three phases:

• Ages 57–62: FERS annuity + FERS supplement (subject to earnings test) + TSP withdrawals
• Ages 62–70: FERS annuity + TSP only — supplement has ended, SS not yet started. This is the gap.
• Age 70+: FERS annuity + SS at 124% of FRA + TSP

The 8-year gap from 62 to 70 without supplement and without SS typically means drawing more heavily from TSP — which has its own implications for IRMAA surcharges on Medicare and Roth conversion windows. This tradeoff needs to be modeled against your actual TSP balance and spending plan.

Spousal survivor benefits and SS timing

Delaying SS to 70 increases your spouse's survivor benefit — they can receive your higher amount if you predecease them. This interacts with the survivor annuity election you made at FERS retirement. Running both variables together — FERS survivor annuity election vs. delay-SS-for-spousal-survivor — is one of the most complex decisions in federal retirement planning, and getting it wrong is usually irreversible.

Worked example: GS-14 retiring at 57

Maria is GS-14 Step 8 in the Washington DC locality. Her high-3 average salary is $148,000. She has 30 years of FERS service, retires at 57 with a 50% survivor election, TSP balance of $820,000, and an estimated SS benefit of $2,200/month at FRA (age 67).

FERS basic annuity: $148,000 × 1.0% × 30 = $44,400/yr gross. Less 10% survivor reduction = $39,960/yr = $3,330/mo.

FERS supplement: $2,200 × (30 ÷ 40) = $1,650/mo until age 62.

TSP at 4% SWR: $820,000 × 4% = $32,800/yr = $2,733/mo.

Ages 57–62: $3,330 + $1,650 + $2,733 = $7,713/mo pre-tax. If Maria earns $0 in post-retirement work, she keeps the full supplement.

At age 62 if she files SS immediately (70% of FRA = $1,540/mo): $3,330 + $1,540 + $2,733 = $7,603/mo. Near-seamless transition — the supplement ends, SS begins, the drop is only $110/mo.

If Maria delays SS to 70 (124% of FRA = $2,728/mo):

• Ages 62–70: $3,330 + $0 + $2,733 = $6,063/mo — a $1,650 drop from her pre-62 income.
• Age 70+: $3,330 + $2,728 + $2,733 = $8,791/mo — her highest income phase.

Break-even for the delay strategy (vs. taking SS at 62): age ~82, depending on exact benefit amounts. The delay wins if she lives past 82 and can absorb the 62–70 gap from TSP without triggering excessive IRMAA or depleting the account.

Common mistakes

• Assuming WEP still applies. CSRS employees who were told their SS would be low because of WEP need to revisit those projections — the reduction is gone.
• Treating the supplement as permanent. It stops at 62 no matter what. Build the gap into your plan.
• Ignoring the earnings test. Post-retirement consulting income above $24,480 reduces the supplement dollar for dollar (at 50 cents per dollar over). If you plan to work, model the impact before setting your retirement date.
• Filing SS at 62 reflexively. The supplement ends at 62 regardless. Filing SS immediately reduces your lifetime benefit and your spouse's survivor benefit. It may be the right call, but run the break-even first.
• Forgetting that SS is taxable. Up to 85% of SS benefits are taxable at the federal level once your combined income exceeds $34,000 (single) or $44,000 (MFJ). See our Federal Retirement Tax Guide for the full calculation.