FERS Pension Present Value Calculator

Your FERS pension pays a fixed monthly check for life. But how much is that worth in today's dollars — as a lump sum? This calculator converts your federal pension into a net present value and a private-sector 401(k) equivalent, so you can see the full picture when comparing job offers, calculating your net worth, or thinking about whether to stay in government.

Why present value matters for federal employees

Evaluating a private-sector offer

When a private-sector employer offers you a higher salary and a 401(k) match, you need a way to compare that to your federal benefits. The pension alone is a large part of your total compensation — often $500,000–$1,000,000 in lump-sum value — but it doesn't appear on your pay stub. Present value translates the pension into a number you can compare directly to a 401(k) balance or a higher salary offer.

Rule of thumb: a 401(k) contribution of 15–20% of salary over 30 years at average market returns might accumulate to $1–2M. If your pension is worth $700,000 in present value terms, that gap is smaller than it appears. Factor it in before accepting.

Calculating your real net worth

Most retirement net worth statements ignore the pension entirely because it doesn't have a brokerage account balance. But your FERS pension is a real financial asset — the actuarial present value of a defined-benefit annuity. Including it gives a more complete picture of your retirement security.

The FERS COLA limitation — the biggest pension risk

Unlike Social Security, FERS pensions are not inflation-adjusted before age 62. A $3,000/month pension starting at 57 is still $3,000/month at 61 — five years later with no adjustment. If inflation runs at 3% over those five years, your real purchasing power drops to about $2,587/month. This no-COLA gap is the main drawback of early FERS retirement and is why this calculator models two separate phases.

After age 62, FERS COLA kicks in — but at a reduced rate: if CPI-W rises more than 2%, FERS retirees get only CPI minus 1 percentage point (5 U.S.C. §8462). In high-inflation years, Social Security recipients do better than FERS retirees on COLA.

The 4% rule comparison

The calculator outputs a "private-sector equivalent" — the 401(k) balance that would generate the same monthly income using the 4.5% withdrawal rate. This is a reasonable sustainable withdrawal rate for a 30-year retirement horizon (based on Bengen 1994 and updated Trinity Study research).¹ Note: this is a simplification. The pension is guaranteed for life regardless of market returns; a 401(k) withdrawal rate is not.

How the calculation works

Phase 1: No COLA (retirement to age 62)

FERS retirees who retire before 62 receive a fixed monthly payment with no cost-of-living adjustment until they turn 62. This phase is modeled as a level annuity: the present value is calculated using a standard fixed-payment PV formula.

Phase 2: COLA-adjusted payments (age 62 to life expectancy)

After age 62, FERS COLA increases the monthly payment each year. This phase is modeled as a growing annuity, with payments increasing at the assumed COLA rate. The phase-2 PV is calculated at retirement, then added to phase-1 PV to get the total value at your retirement date.

Today's value

If you haven't started collecting yet, the pension's present value at your retirement date is further discounted back to today using the same discount rate for each year until retirement. A pension worth $650,000 at age 57 is worth roughly $508,000 today if you're currently 52 and using a 5% discount rate.