There is one specific combination of age, service, and retirement date that makes a FERS pension meaningfully larger. It isn’t complicated — in fact, the rule itself is a single sentence — but the way it interacts with your retirement date, your survivor election, and your Social Security timing is where most federal employees end up confused.

The rule is this: if you retire at age 62 or later with at least 20 years of creditable service, the FERS multiplier on the first 20 years of service increases from 1.0% to 1.1%. Years 21 and beyond continue to accrue at the standard 1.0% rate.

That single change is the difference between a 1.0% pension and a blended pension. It is, in many cases, the most valuable retirement timing decision a FERS employee will ever make.

The arithmetic, written out.

For a federal employee who retires at age 62 or older with at least 20 years of service, the FERS basic benefit calculation becomes:

Annual Annuity = 1.1% × 20 years × High-3 + 1.0% × (remaining years) × High-3

So an employee retiring at 62 with 25 years of service and a $100,000 high-3 receives:

  • 1.1% × 20 × $100,000 = $22,000
  • 1.0% × 5 × $100,000 = $5,000
  • Total: $27,000 per year

Compare that to a 25-year employee who retires at 61 with the same $100,000 high-3: 1.0% × 25 × $100,000 = $25,000 per year. The 12-month wait to age 62 added $2,000 of annual pension income, for life, with cost-of-living adjustments on top.

That $2,000 per year is also the smallest case. The gap widens with every additional year of service, and it widens faster the higher your high-3 is. On a $150,000 high-3 with 30 years of service, the same 12-month wait is worth roughly $3,300 a year for life.

Why this rule exists, and what it really is.

The age-62 enhancement was a deliberate late-career incentive built into the FERS system. It is, in spirit, an acknowledgment that federal employees who stay past 62 with 20+ years are giving up private-sector earnings and Social Security claiming flexibility. The 1.1% on the first 20 years is the trade.

The thing to understand — and the thing many federal employees miss — is that the 1.1% applies only to the first 20 years. If you retire at 62 with 30 years, you get 1.1% on years 1–20 and 1.0% on years 21–30, not 1.1% on the whole stack. This is the part of the rule that the loudest voices on the internet routinely get wrong.

The two non-obvious things to model.

Once you understand the rule itself, the work begins. The 62-and-20 decision is rarely a simple “wait one more year” choice. There are at least two adjacent decisions that move real money:

1. The FERS supplement goes away at 62.

The FERS supplement is a bridge payment that approximates the Social Security benefit you would have earned if all your federal service had been Social Security–covered. It is paid only to employees who retire before 62 and only until age 62.

In other words, the supplement and the 1.1% multiplier are two separate levers on the same trade. Employees who retire before 62 get the supplement (a smaller annual income) and a 1.0% multiplier across the board. Employees who wait until 62 lose the supplement (Social Security has not started yet) but get the 1.1% on the first 20 years. The break-even is real, and it depends on your high-3, your years of service, and the size of your projected Social Security benefit.

2. Survivor election interacts with the multiplier change.

A full survivor annuity reduces your own FERS annuity by roughly 10%. That 10% is calculated afterthe multiplier math. So if the 1.1% enhancement adds $2,000 to your annual pension, a full survivor election will then take roughly $200 of that back (10% of $2,000) — which still leaves you ahead, but not by the full $2,000.

For married employees, the choice is rarely “1.1% multiplier” versus “no survivor annuity.” It is usually “1.1% multiplier plus a partial or full survivor election” versus “1.0% multiplier and a different survivor structure.” Each branch of that decision needs its own arithmetic, with your specific high-3, your spouse’s age, and your combined health picture on the table.

What 62-and-20 looks like across common scenarios.

A few rough frames that come up often in my office:

  • 20 years exactly, $90,000 high-3, retire at 62: 1.1% × 20 × $90,000 = $19,800. Versus 1.0% × 20 × $90,000 = $18,000. The 1.1% is worth $1,800 per year for life. Over a 25-year retirement, roughly $45,000 in nominal dollars before COLAs.
  • 25 years, $110,000 high-3, retire at 62:1.1% × 20 = $24,200, plus 1.0% × 5 = $5,500. Total $29,700. Versus a 61-year-old retiree with the same service: $27,500. The 12-month wait is worth $2,200 per year.
  • 30 years, $140,000 high-3, retire at 62: $30,800 from the 1.1% block, plus $14,000 from the 1.0% block, for a total of $44,800. A 61-year-old retiree with the same service would receive $42,000. The wait is worth $2,800 per year.

These are illustrative, not personalized. Your service computation date, your actual high-3, your survivor election, and your Social Security claiming strategy all shift the answer.

When the wait is the wrong answer.

The 62-and-20 enhancement is real, but it is not always the right answer. The cases where waiting is the wrong call include:

  • You have a documented medical condition that makes working another year genuinely dangerous. A bigger pension is not a cure.
  • Your job has been eliminated or restructured, and you have a VERA/VSIP offer in hand. The enhanced multiplier does not survive a Voluntary Early Retirement Authority offer — the rules are different.
  • Your planned retirement income from other sources is already well above your spending needs. The marginal $2,000–$3,000 of annual pension may not change your life; the year of your life may.

The arithmetic is necessary. It is not sufficient. The 62-and-20 decision is a quality-of-life decision wearing a pension costume.