Quick answer: For the controller in this example, retiring at 50 instead of 52 collects more pension and supplement income until about age 93. Waiting two years raises the pension by $263/month for life — but it takes four decades for that raise to repay the two years of checks you skipped. The case for staying isn't the pension. It's the bigger TSP and two more years of paychecks.
Every figure below comes from FedHorizon's FERS calculation engine — the same formulas behind our reports. Your numbers will differ; the shape of the tradeoff usually won't.
Who This Article Is For
- Air traffic controllers approaching 50 with 20+ years, or any age with 25
- Controllers deciding whether "one or two more years" is worth it before the age-56 mandatory separation
- Other special-category employees (law enforcement, firefighters) — the formula and supplement rules are nearly identical
- Spouses trying to understand what an early ATC retirement actually pays
Meet Dana
Dana is a Certified Professional Controller at a busy TRACON. Born in 1978, Dana is 48 today with 23 years of ATC service, a High-3 of $158,000, and $480,000 in the TSP with 10% going in each paycheck. Dana has 800 hours of unused sick leave, carries self-only FEHB, and files single.
Dana's question is the one every controller eventually asks: go at 50, the first day I can — or stay until 52?
Illustrative example. Modeled with FedHorizon's engine: High-3 held at $158,000 in both scenarios (no raises assumed), TSP growth 6%/year, Social Security estimated from salary, federal income tax only. Pension figures are before the survivor election and before cost-of-living adjustments. Not financial advice.
The Rules That Make 50 Possible
Controllers get a different deal from the standard FERS employee:
- Eligibility: age 50 with 20 years of ATC service, or any age with 25. Dana hits both at 50 (25 years).
- Mandatory separation at 56. Whatever Dana decides, the window closes at 56.
- A richer formula: 1.7% of High-3 for each of the first 20 years, then 1% for each year after. A standard FERS employee gets 1% (1.1% at 62+) for every year.
- The FERS Supplement starts immediately — not at the Minimum Retirement Age (57 for Dana) — and the earnings test that can reduce it doesn't apply until the MRA.
- COLAs start right away. Regular FERS retirees get no cost-of-living adjustment until 62; special-category retirees get one from the first year (the supplement itself is never adjusted).
Retire at 50
Service: 25 years for eligibility; 25⅓ for the pension, because 800 hours of sick leave adds four months to the computation (but never to eligibility).
Pension: 1.7% × 20 years × $158,000, plus 1% × 5⅓ years × $158,000 = $62,147/year ($5,179/month).
FERS Supplement: $1,174/month until 62 — roughly the estimated Social Security benefit at 62 (about $1,879) × 25 years ÷ 40. Sick leave doesn't count here.
Monthly income from the pension side: $6,353, before tax and health premiums. After estimated federal tax ($662) and self-only FEHB ($274): about $5,418/month net.
TSP at retirement: $588,150 — about $1,961/month at a 4% withdrawal rate.
Retire at 52
Service: 27 years for eligibility; 27⅓ for the pension.
Pension: 1.7% × 20 years × $158,000, plus 1% × 7⅓ years × $158,000 = $65,307/year ($5,442/month).
FERS Supplement: $1,362/month until 62 — more service (27 years) and a slightly higher Social Security estimate (about $2,018), since Dana keeps earning.
Monthly income from the pension side: $6,804 — after estimated tax ($761) and FEHB ($274), about $5,770/month net.
TSP at retirement: $709,667 — about $2,366/month at 4%.
Side by Side
| Retire at 50 | Retire at 52 | Difference | |
|---|---|---|---|
| Pension service (incl. sick leave) | 25⅓ years | 27⅓ years | +2 years |
| Annual pension | $62,147 | $65,307 | +$3,160/yr |
| Monthly pension | $5,179 | $5,442 | +$263/mo, for life |
| FERS Supplement (until 62) | $1,174/mo | $1,362/mo | +$188/mo |
| Pension + supplement | $6,353/mo | $6,804/mo | +$451/mo |
| Net after federal tax and FEHB | $5,418/mo | $5,770/mo | +$352/mo |
| TSP at retirement | $588,150 | $709,667 | +$121,517 |
| 4% TSP draw | $1,961/mo | $2,366/mo | +$405/mo |
| Net including the 4% TSP draw (after tax) | $6,947/mo | $7,615/mo | +$668/mo |
On a monthly basis, 52 looks clearly better. But the monthly view hides what Dana gives up to get there.
The Break-Even: Age 93
Retiring at 52 means skipping two full years of pension and supplement checks. The bigger pension then has to earn that back $3,160 a year at a time. Here's the cumulative pension-plus-supplement income:
| By age | Retire at 50 | Retire at 52 | Retire-at-50 lead |
|---|---|---|---|
| 75 | $1,722,760 | $1,665,499 | $57,262 |
| 80 | $2,033,494 | $1,992,032 | $41,462 |
| 85 | $2,344,227 | $2,318,565 | $25,662 |
The lead shrinks every year, but it doesn't disappear until about age 93. On the pension alone, leaving at 50 is the better deal for almost everyone who makes it there.
Free · No Account Required
Run your own 50-vs-52 comparison.
Enter your ATC (or LEO/firefighter) service, High-3, sick leave and TSP. See both scenarios side by side, your supplement, your break-even age, and what changes the answer.
What the Break-Even Leaves Out
That age-93 number counts only the pension and the supplement. Four things it doesn't count — and they mostly push the other way:
Two more years of paychecks. Staying means two more years of full controller pay. That's the single largest number in the whole decision, and it dwarfs the pension head start. If Dana doesn't need to stop working at 50, the financial case for staying is strong; the question becomes whether Dana wants to.
The TSP. Two more years of contributions, matching and growth — with no withdrawals — add about $121,500 to the projected balance. That money keeps compounding through retirement.
Raises and COLAs — roughly a wash. The model holds Dana's High-3 at $158,000 in both scenarios. In reality, two more years of raises would lift the High-3 and make the age-52 pension a bit bigger. But the age-50 pension starts collecting cost-of-living adjustments two years sooner, which narrows the gap from the other side. The two effects largely offset, so treat 93 as approximate, not exact.
Social Security. Not counted in either scenario. Two more years of high earnings raise Dana's eventual benefit slightly.
And one thing that cuts the other way: two years of Dana's life. At 50, those years are worth a lot.
If Dana Were Married
A full survivor benefit costs 10% of the pension — about $518/month at 50 — and pays a surviving spouse 50% of the unreduced pension for life. It doesn't change which age wins, but it does change the monthly budget in both scenarios, and the election is permanent. See our survivor benefit guide before you decide.
So: 50 or 52?
The case for 50:
- The pension-and-supplement lead lasts until about 93
- Two more years of retirement while young enough to use them
- The supplement runs a full 12 years, with no earnings test until 57 — a second career is fully compatible
The case for 52:
- $263/month more pension for life
- About $121,500 more in the TSP and $405/month more to draw
- Two more years of top-of-scale pay — the biggest number in the decision
The honest summary: the pension math says go at 50. Everything else — the paycheck, the TSP — says staying pays, if you're still glad to plug in. The decision is less "which is worth more" than "what are two years of work worth to you."
Frequently Asked Questions
When can an air traffic controller retire under FERS?
How is an ATC pension calculated?
Does the FERS Supplement earnings test apply to air traffic controllers?
Do controllers get COLAs before 62?
Sources & Methodology
Reviewed against:
- →5 U.S.C. § 8412(e) — Immediate retirement for air traffic controllers
- →5 U.S.C. § 8425(a) — Mandatory separation of air traffic controllers
- →5 U.S.C. § 8415 — Computation of basic annuity (special-category rates)
- →5 U.S.C. § 8421 and § 8421a — Annuity supplement and earnings limitation
- →5 U.S.C. § 8462 — Cost-of-living adjustments
- →OPM CSRS/FERS Handbook, Chapter 46 — Law Enforcement Officers, Firefighters and Air Traffic Controllers
Last reviewed: October 2026 · Formulas validated against OPM published examples.
Free · No Account Required
See your actual pension, supplement, and TSP numbers.
Run your free FERS retirement estimate at FedHorizon — no account required, results appear instantly. Get the full 12-section retirement report free during beta.
See My Retirement Scenarios →Free instant estimate
See your actual numbers — not a rule of thumb.
Run the FERS pension estimate instantly. No account required. Or get the full 12-section report with break-even analysis, survivor election modeling, and more.