The FSPS Annuity Supplement and the Earnings Test: The Rules Most Foreign Service Retirees Get Wrong
By William Carrington, CFP®, RMA®
Back in May I wrote about the FSPS annuity supplement — the bridge payment that fills the gap between Foreign Service retirement and age 62, when Social Security becomes available. That post covered what the supplement is and why it exists. This one covers the questions I hear most often about it:
"If I retire at 50 and keep working, don't I lose the supplement?" And its follow-up: "When exactly does the reduction hit?"
The answers surprise almost everyone. No, you don't lose it — not until well after your minimum retirement age. And the timing of the reduction works differently than nearly every plain-English explanation suggests.
First, who gets the supplement at all
The supplement is paid to FSPS retirees who retire before 62 with entitlement to an immediate annuity and at least one year of FSPS service. That includes the classic voluntary retirement at age 50 with 20 years of service — and it includes involuntary separations with immediate annuity entitlement, which matters to more families this year than most. It does not include MRA+10 retirees, disability retirees, or anyone taking a deferred annuity.
The amount is your estimated age-62 Social Security benefit, divided by 40, multiplied by your years of FSPS service. Twenty years of service and a $2,000 monthly age-62 estimate produces a supplement of about $1,000 per month. It's paid from your retirement date until the month before the month you turn 62.
The misconception, and where it comes from
If you've read anything about working in retirement, you've encountered the Social Security earnings test. Claim Social Security before your full retirement age, keep working, and your benefit shrinks — in 2026, one dollar withheld for every two dollars you earn above $24,480.
The FSPS supplement borrows this same test, so most people assume it applies the same way: from the first supplement check, adjusted in real time. Most general federal-retirement content reinforces this, because for a regular FERS retiree it's approximately true — they can't retire on an immediate unreduced annuity until their minimum retirement age anyway, so their supplement is earnings-tested from the start.
Foreign Service retirement doesn't work that way. Neither does the supplement. Two rules make the FSPS version far more generous for working retirees than the folklore suggests.
Rule one: no earnings test before your MRA
Between retirement and your minimum retirement age — 57 for anyone born in 1970 or later, between 56 and 57 for those born 1965–1969 — the earnings test simply does not apply. You can run a full-time second career, earn more than you did in the Service, and collect every dollar of the supplement. This isn't a loophole; it's written into the statute. Federal law excludes all earnings attributable to any period before you attain your MRA from the earnings test entirely.
A scope note for readers outside the Foreign Service: the same pre-MRA exemption applies to other federal employees with special retirement provisions — law enforcement officers, firefighters, air traffic controllers — who can also retire before their MRA. It's the standard-provision FERS retiree, retiring at MRA or later, for whom the test bites from day one.
Rule two: the test runs a year behind
Here's the part that even well-informed retirees miss. Unlike Social Security, where you report estimated current-year earnings and SSA withholds in advance, the FSPS system is entirely retrospective. There is no mechanism to report expected earnings, and nothing is adjusted in real time.
Instead, each January, retirees who have reached their MRA file Form DS-5026 — the FSPS Annuity Supplement Earnings Report — with the State Department (not OPM; if you've seen references to OPM's RI 92-22 survey, that's the Civil Service version). The form reports the prior calendar year's earnings. Any reduction, termination, or reinstatement then takes effect January 1 of the current year, applied beginning with the February annuity payment.
Three practical consequences follow:
The lag works in your favor at the start. In your first working year after reaching MRA, you receive the full supplement all year, no matter how much you earn. The reduction based on those earnings arrives the following January.
The lag works against you at the end. If you stop working, you'll receive a reduced (possibly zero) supplement for a full year based on earnings you're no longer receiving. Reinstatement comes the next January, after you report the low-earnings year.
The January check isn't free money. Because the reduction is effective January 1 but processed with the February payment, an unreduced January payment can be recovered as an overpayment. File the DS-5026 promptly — and if you don't file at all, the supplement is suspended entirely until you do.
The MRA-year bonus most people miss
One more wrinkle, and it's a pleasant one. In the calendar year you reach your MRA, only earnings after your MRA date count — and they're measured against the full annual exempt amount, not a prorated slice of it.
So a client who turns 57 in October and earns $150,000 a year counts only roughly three months of wages — call it $37,500 — against the $24,480 limit. The excess is modest, and the following year's reduction is small. Someone with a November or December birthday may not breach the limit at all, pushing their first meaningful reduction out yet another year.
A worked example, start to finish
An FSO retires in 2026 at age 52 with 24 years of service. Her supplement is about $1,200 per month — $14,400 per year. She takes a consulting role paying $150,000 and was born in March 1974, so her MRA is 57, reached in March 2031.
2026 through 2030 (ages 52–56): Full supplement, every year, alongside full consulting income. No forms, no test, no reduction. Roughly $72,000 of supplement that she'd forfeit only by wrongly believing she wasn't entitled to it.
2031 (turns 57 in March): Still receives the full supplement all year. Her March–December earnings — about $125,000 — will be reported on the DS-5026 she files in January 2032.
2032: The reduction takes effect. Excess earnings of roughly $100,500, halved, is far more than the $14,400 supplement — so the supplement is fully suspended for 2032. If she keeps earning at that level, it stays suspended.
2035 (turns 62 in March): The supplement would have ended anyway the month before her birthday. A closing nuance: reductions attributable to her final working years can only be applied while the supplement still exists — earnings late in the window may partially escape the test simply because there's nothing left to reduce.
If instead she scales back to $40,000 of part-time work at 59, the arithmetic changes: excess of about $15,500, a reduction of roughly $7,760, and she keeps about $6,600 a year — starting, again, the year after the lower earnings are reported.
What counts as earnings — and what doesn't
The test looks at earned income only: wages covered by Social Security and net self-employment income. It does not count your FSPS annuity, TSP or IRA distributions, investment income, capital gains, most rental income, pensions of any kind, or your spouse's income.
Two exclusions deserve special mention for anyone separated involuntarily: your lump-sum annual leave payout and any separation incentive payment do not count, and neither does unemployment compensation. An involuntary retiree's transition-year income can look large on a tax return while containing little or nothing the earnings test actually sees.
What this means for your planning
If you're contemplating a 50/20 retirement with a second career in mind, the supplement belongs in your projections at full value not just to age 57, but through the end of the calendar year you reach MRA — often a year longer than people assume, and sometimes two for late-year birthdays. Across the whole window, that's routinely a five-figure difference versus the "tested from day one" assumption I regularly see modeled.
If you're approaching your MRA and still working, plan the cash flow around the lag: the year after your first post-MRA working year is when the checks shrink, and the settle-up includes that January payment. And if you're winding down work near 60, expect one lean supplement year before reinstatement catches up — budget for it rather than being surprised by it.
The supplement is one of the more generous and least understood pieces of Foreign Service retirement.
This article is for educational purposes only and does not constitute individualized financial, tax, or legal advice. Federal retirement rules, earnings test exempt amounts, and reporting requirements are subject to change; confirm the details of your own situation with the Department of State HR Service Center (HRSC@state.gov) or a qualified professional before making retirement decisions. William Carrington, CFP®, RMA® — Carrington Financial Planning LLC.