FERSWorth app icon
For federal employees under FERS, on iPhone

What will your FERS pension pay?

FERSWorth estimates your federal retirement: when you can go, your basic annuity, the survivor and health premium deductions, and the FERS supplement until 62. Every figure has an info button with the rule behind it and the official OPM source.

Free full estimate with a small banner ad. One-time Pro upgrade, no subscription. No account. Your numbers stay on your iPhone.

What it does

Your retirement, in plain English

The FERS rules are spread across handbooks, charts and fact sheets. FERSWorth puts your own numbers through them and shows its work.

Eligibility

When you can retire

Your minimum retirement age (MRA) from your birth year, the earliest date you can leave with an unreduced annuity, and what retiring at MRA with 10 years costs, with the option to postpone.

Annuity

Your basic annuity

High-3 times 1% (or 1.1% at 62 with 20 years) times your creditable service, including unused sick leave and military service with the deposit paid.

Deductions

Survivor and health premiums

The full or partial survivor reduction and your FEHB premium, plus an optional withholding percentage, for an estimate of what lands in your account each month.

Supplement

FERS supplement until 62

The bridge payment many retirees get before Social Security, from your own Social Security estimate, including the earnings test if you keep working.

At 62

What changes at 62

When the supplement stops and cost-of-living adjustments begin, so the drop and the raise are not a surprise.

Sources

Every number explained

Tap the info button on any figure for the rule, your numbers run through it, and a link to the OPM page it comes from.

How it works

About two minutes to your estimate

01

Answer a few questions

Your birth date, service computation date (or start date and breaks), high-3 or current salary, sick leave, military service and survivor choice.

02

Pick a retirement date

The earliest unreduced date, an age, or your last day of service. FERSWorth explains which kind of retirement that is.

03

See your estimate

Gross and estimated monthly annuity, the supplement until 62, and a breakdown of every step, each with its source.

Free vs. Pro

The full estimate is free. Pro is one purchase.

FERSWorth Pro is a single in-app purchase, not a subscription. Buy it once and it stays unlocked on your Apple Account.

Free

FERSWorth

$0

A complete estimate for one plan, supported by a small banner ad.

  • Eligibility explainedYour MRA, retirement type and earliest unreduced date.
  • Annuity breakdownService, high-3, the 1% or 1.1% multiplier, reductions and deductions.
  • FERS supplementFrom your Social Security estimate, with the earnings test.
  • Sources for everythingEach figure links to the OPM rule behind it.
FERSWorth Pro

One purchase. Yours forever.

$4.99 one time, U.S. price

For planning the date, not just the amount.

  • Compare retirement datesYour MRA, 60, 62 or any date side by side, with monthly and lifetime totals.
  • Year-by-year projectionAnnuity, supplement and COLAs every year to 95, with your own inflation assumption.
  • Unlimited scenariosSave every plan you are weighing.
  • PDF reportA clean summary to share or print, made on your iPhone.
  • No adsThe banner is gone for good.
What it covers

Regular FERS retirement, done carefully

Version 1 covers voluntary retirement for regular FERS employees. Where a rule is open to interpretation, FERSWorth picks the conservative reading and says so in the app.

Not covered yet

Special category retirement (law enforcement, firefighters, air traffic controllers and others), disability retirement, CSRS and CSRS Offset, and employees who transferred from CSRS to FERS. The app asks up front and shows a clear message instead of numbers that would be wrong.

Part-time service

Part-time service changes how the annuity is computed, period by period. FERSWorth flags it and points you to your agency for an exact figure.

Yearly figures with dates

Values that change every year, such as the latest COLA and the Social Security earnings limit, ship with the app and refresh automatically. The app shows the date of each.

Not taxes

FERSWorth does not compute federal or state income tax. You can enter your own withholding percentage for a take-home estimate.

Estimates only. FERSWorth is not affiliated with OPM or any government agency. Confirm with your agency's HR/benefits office or OPM before deciding. FERSWorth is an independent app made by MannyD.dev.

Questions?

We read everything. Support, feedback and bug reports all go to the same inbox.