Maximizing your high-3: the lever that sets your pension
Of the three numbers that determine your federal pension — your high-3, your years of service, and your multiplier — the high-3 is the one most people leave money on the table with. It’s the average of your highest 36 consecutive months of basic pay, and because it gets multiplied by every year you served, even a few thousand dollars of extra high-3 compounds into a meaningfully bigger check for the rest of your life. A well-timed promotion, an extra month past a raise, a higher-locality assignment — these aren’t rounding errors; they’re permanent income. Here’s what counts, the playbook to maximize it, and a calculator that turns your high-3 into a pension number.
1. Why the high-3 is the lever
Your FERS pension comes from one formula:
Look at where the high-3 sits: it’s multiplied by your years of service. So every extra dollar of high-3 doesn’t just add a dollar — it adds a dollar for each year you served, times the multiplier. With 30 years of service at the 1.1% rate, each $1,000 of additional high-3 is worth $330 a year, every year, for life. Over a 25-year retirement, that one thousand dollars of high-3 returns more than $8,000. That leverage is why the high-3 deserves real attention in your final working years.
2. What counts — and what doesn’t
The high-3 is built on basic pay — and knowing exactly what that includes is the first step to maximizing it:
| Counts toward high-3 | Does NOT count |
|---|---|
| Base salary (grade & step) | Overtime |
| Locality pay | Bonuses & cash awards |
| Within-grade step increases | Hazard pay (generally) |
| Regular shift / night differential | Lump-sum annual leave payout |
| Law enforcement availability pay | Most allowances & travel |
The big one to internalize is locality pay counts. It’s part of basic pay, so the geographic area you work in during your final years directly shapes your high-3 — and the annual locality adjustments lift it along the way. Just as important: chasing overtime or a bonus in your last year does nothing for your pension, because none of it touches basic pay.
3. Any 36 consecutive months
A common misconception is that the high-3 is locked to your last three years. It isn’t — it’s the highest-averaging 36 consecutive months anywhere in your career. For most people that’s the final stretch, since federal pay generally climbs over time. But the rule protects you in an important case.
If you step down from, say, a GS-14 supervisory role to a less stressful GS-13 to finish your career, OPM doesn’t penalize you — it looks back and uses your earlier, higher-paid 36 months. You keep that higher base. The flip side: you generally can’t raise your high-3 by working longer at the lower rate.
4. The maximizing playbook
With the rules in hand, here’s how feds actually push the number up:
- Land the promotion or step increase early enough to hold it. OPM weights each pay rate by the time you held it in the window, so a raise in your final month barely moves the average. The longer you work at the higher rate, the more it lifts your high-3.
- Work past the January pay raise. Staying beyond the effective date of the annual adjustment captures it in your high-3 rather than walking away the day before.
- Don’t retire right before a within-grade increase. If a step bump is weeks away, waiting for it raises your base for the rest of the window.
- Mind locality. Since locality pay counts, a higher-locality assignment in your final years — or simply being in a high-locality area — raises your high-3.
5. Your high-3 and pension
Enter your basic pay (including locality) for each of your three highest years, your years of service, and your multiplier. The calculator shows your high-3 and the pension it produces — plus the leverage of each extra $1,000.
Your numbers
Gross pension before survivor, FEHB, FEGLI, and tax deductions. Uses your three highest annual basic-pay figures as the high-3. The 1.1% multiplier requires age 62+ with 20+ years. Estimate only, not advice.
6. The 1.1% multiplier
Here’s the lever that dwarfs most high-3 tinkering. The FERS multiplier is normally 1.0% per year — but it jumps to 1.1% if you retire at age 62 or later with at least 20 years of service. Because it applies to every year, that’s a flat 10% increase to your entire pension.
On a $100,000 high-3 with 25 years, the gap between 1.0% and 1.1% is $2,500 a year — for life. That often outweighs a year of careful high-3 maximizing. And if you’re just shy of 20 years, converted unused sick leave can sometimes bridge the gap to qualify. Before you pick a date, check whether nudging to 62-and-20 is within reach — it’s frequently the highest-value move on the board.
7. Locality, timing, part-time
Three finer points decide the edges. Locality, as noted, is real money in the high-3 — don’t overlook it when weighing a final assignment. Timing the calendar matters: aligning your retirement date with a raise, a step increase, and the start of a month can each add a little, and the December-vs-January decision interacts with leave payouts and the annuity start date.
The trap to watch is part-time service in your final years. If you drop to part-time near the end, OPM prorates your high-3 for that period, which can pull the average down — the opposite of what you want from your highest-earning window. If a reduced schedule is your goal, look at phased retirement instead, which is structured specifically to handle the part-time-to-retirement transition.
8. What’s locked, what’s moving
Two legislative notes worth knowing as of early 2026. First, the proposed “high-5” — which would have switched the calculation from a 36-month to a 60-month average, lowering most pensions — was dropped from the 2025 reconciliation package. Federal employees continue using the high-3.
Second, a separate bill (S.26 in the 119th Congress) has proposed excluding locality pay from the high-3 for newly-hired employees. It has been introduced but not passed, and as written would apply only to new hires, not current employees. Neither is settled law, but both are worth watching, because each would change the very number this guide is about. For now, the rules above stand — plan around them, and fold your high-3 strategy into your broader pension calculation.
9. Frequently asked questions
What is the high-3 in federal retirement?
Your high-3 is the average of the highest basic pay you earned over any 36 consecutive months of federal service — three consecutive years, not necessarily your last three. It’s the salary figure at the heart of both the FERS and CSRS pension formulas: your annuity equals your high-3 multiplied by your years of creditable service and a multiplier. Because the high-3 multiplies across every year of service, even a modest increase in it ripples into a meaningfully larger pension paid for the rest of your life. For most employees the high-3 falls in the final three years, when salary typically peaks.
What counts toward the high-3?
The high-3 is built on basic pay, which includes your base salary, locality pay, and regularly-received items like shift or night differential, plus law enforcement availability pay for officers. It does not include overtime, bonuses, cash awards, hazard pay, lump-sum payouts for unused annual leave, or most allowances. Because locality pay is part of basic pay, where you work in your final years matters — a higher-locality area lifts your high-3. OPM weights each pay rate by the time you held it during the 36 months, so a raise partway through the window only counts for the portion of time it was in effect.
Does the high-3 have to be my last three years?
No. The high-3 is the highest-averaging 36 consecutive months anywhere in your career, not specifically the final three years. For most people the last three years are the highest because pay rises over time, so that’s what gets used. But if you took a lower-paying position late in your career — say, stepping down from a GS-14 supervisory role to a GS-13 — OPM will look back and use the earlier, higher-paid 36-month stretch instead. You don’t lose your pension base by downgrading at the end, though you also can’t raise it by working longer at the lower rate.
How do I maximize my high-3?
The core moves: time promotions and within-grade step increases so the higher rate sits inside your 36-month window for as long as possible; work past the effective date of the annual January pay raise so it’s captured; and recognize that locality pay counts, so a higher-locality assignment in your final years lifts the average. Avoid retiring right before a within-grade increase, and be aware that part-time service in your final years prorates the high-3 downward. The single biggest lever, though, isn’t the high-3 at all — it’s qualifying for the 1.1% multiplier by retiring at 62 or later with at least 20 years of service, which boosts the entire pension by 10%.
What is the 1.1% multiplier and how do I get it?
The FERS pension multiplier is normally 1.0% per year of service, but it rises to 1.1% if you retire at age 62 or older with at least 20 years of creditable service. Since it applies to every year, that’s a 10% increase to your whole pension — often worth more than years of high-3 tweaking. On a $100,000 high-3 with 25 years, the difference between 1.0% and 1.1% is $2,500 a year for life. If you’re close to 20 years, converted unused sick leave can sometimes bridge the gap to qualify, making it worth checking your numbers carefully before you set a retirement date.