Federal retirement decision guide · Reviewed September 5, 2026

How to bridge the gap between FERS retirement and Social Security

A federal retirement income bridge is the year-by-year plan for replacing your paycheck after you leave service but before Social Security begins. Start with the after-tax amount your household needs, subtract FERS and other reliable income, then assign the remaining gap to the FERS supplement, VA compensation, TSP, cash, work, or a later Social Security claim.

This is a planning framework, not tax, legal, benefits, investment, or medical advice.

What are the three dates that change your bridge?

The bridge is not automatically “retirement to age 62.” Your timing depends on when each income stream actually starts and stops. The table below is a map; your award notices and official estimates control.

The three dates that change a federal retirement income bridge
Milestone	What changes	Rule owner
Retirement date	Salary stops; your FERS annuity and other income may begin	OPM owns annuity eligibility and payment rules
FERS supplement end	The temporary supplement generally ends at age 62; an earnings test can reduce it before then	OPM owns the supplement; verify your award letter
Social Security start	Your chosen claiming date replaces or changes the amount you need from other sources	Social Security Administration (SSA) owns the estimate and claim

The supplement has a narrow boundary

OPM pays the FERS Special Retirement Supplement to certain immediate-annuity FERS retirees before age 62. Disability, MRA+10, and deferred retirees are ineligible. VERA or involuntary retirees generally do not receive it until their Minimum Retirement Age (MRA), while special-category immediate retirees can receive it before MRA. It stops at the end of the month before age 62 whether or not you claim Social Security at 62. The earnings test counts wages and net self-employment income—not your pension, TSP withdrawals, or VA compensation.

Read OPM Chapter 51 and OPM’s age-62 supplement FAQ. For an existing tool that focuses on the earnings test, see the FERS Supplement Calculator.

How do you calculate the after-tax monthly gap?

Use a conservative household spending target for each year. Subtract income you expect to receive in that same year—not a future Social Security estimate. The difference is the bridge gap. Repeat the calculation when a supplement ends, Medicare premiums change, a spouse claims, or work income stops.

Need

$6,200 monthly after tax

Example household spending target, including recurring healthcare costs.

Reliable income

$4,750 monthly

Example net FERS annuity, VA compensation, and temporary supplement.

Example gap: $1,450 per month. That is the amount the household must fund in that year from TSP, cash, work, or a different claiming date. This example assumes the FERS annuity and traditional TSP distributions are generally federally taxable, while VA disability compensation is tax-free. Actual federal and state taxes, deductions, withholding, and Roth treatment vary. The example is illustrative; it is not a recommendation or a forecast.

Which sources can fund the bridge?

FERS annuity and supplement

The Federal Employees Retirement System (FERS) annuity may be the base. The FERS Special Retirement Supplement is temporary and eligibility-limited for certain immediate-annuity retirees before age 62; the Office of Personnel Management (OPM) handles it and its earnings test.

VA compensation

Department of Veterans Affairs (VA) disability compensation can be a separate household income stream. Verify your award and remember that this page does not determine eligibility or tax treatment.

Thrift Savings Plan (TSP)

Thrift Savings Plan (TSP) withdrawals can fill a planned gap, but sequence, tax withholding, account type, investment risk, and required minimum distributions matter. After separation, a distribution may face the 10% additional tax before age 59½; the employer-plan separation exception may apply after separation in or after the year you turn 55 (50 for qualified public safety employees). Rolling to an Individual Retirement Account (IRA) changes that exception.

Cash, work, or delayed Social Security

Cash can absorb an early-year need; wages can affect the supplement; delaying Social Security can lengthen the bridge while changing later income. The Social Security Administration (SSA) owns your estimate and claiming record.

For withdrawal mechanics, see TSP withdrawal strategy. For early-distribution exceptions, see the IRS exceptions page and TSP retirement withdrawal guidance. For claiming tradeoffs, see Social Security at 62 versus 70.

What do three worked bridge scenarios look like?

These are labeled examples with deliberately simple arithmetic, not personalized recommendations. Each assumes a $6,200 monthly after-tax spending target. Taxes, inflation, survivor choices, and investment returns would change the real result.

Example A · before 62

Assumptions: Retire at 60; eligible supplement is $1,100/mo; net FERS annuity and VA compensation total $3,650/mo; claim Social Security at 67 for this illustration.

Arithmetic: $6,200 − ($3,650 + $1,100) = $1,450/mo gap until 62; then $2,550/mo until 67 before Social Security.

Watch: Check the supplement eligibility boundary and whether wages trigger its earnings test.

Example B · at 62

Assumptions: Retire at 62; no supplement; net FERS annuity plus VA compensation total $3,900/mo; illustrative Social Security claim is $2,000/mo at 62.

Arithmetic: $6,200 − $3,900 = $2,300/mo before Social Security; $6,200 − ($3,900 + $2,000) = $300/mo after claim.

Watch: Compare the early claim with funding $2,300/mo from other sources; this page does not choose a claim age.

Example C · after 62

Assumptions: Retire at 64; no supplement; net FERS annuity and VA compensation total $4,200/mo; illustrative Social Security claim is $2,500/mo at 67.

Arithmetic: $6,200 − $4,200 = $2,000/mo for ages 64–66; $6,200 − ($4,200 + $2,500) = a $500/mo surplus after 67.

Watch: A later retirement may shorten the bridge, but no supplement is payable simply because Social Security has not started.

Sequence risk boundary: if markets fall and a household takes larger early TSP withdrawals, more shares may be sold at lower prices and fewer remain invested for a recovery. Test a poor-return case alongside your base case; this guide does not prescribe an allocation.

Who is this for—and what can’t it determine?

This guide is for FERS employees, federal retirees, and veterans who need to map income between separation and Social Security. It is not for deciding eligibility, selecting investments, filing taxes, or replacing a benefits counselor.

It cannot determine your OPM annuity, supplement eligibility, SSA benefit, tax liability, Medicare premiums, VA award, investment return, or the right claiming age. Rules, thresholds, and premiums change. Confirm volatile facts with the agency that owns them and use your own notices and statements.

Next step

Turn the bridge into a year-by-year plan

A spreadsheet can show one assumption at a time. Open a saved scenario from My Plan, then choose Bridge Years, Gap Analysis, or Lifetime Income to connect the timing, gap, and long-term view. Retirement Runway adds the portfolio runway without creating a second calculator.

Review your Retirement Runway

Primary sources and provenance

Last reviewed September 5, 2026. Official agencies control the rules; links below are research starting points, not endorsements.