International calculators

US High-3 pension calculator

Select the retirement scheme first. Civilian High-3 uses the highest consecutive 36 months; military High-36 uses the highest 36 eligible monthly amounts.

What this tool covers

Includes military, reserve, FERS, CSRS and selected disability formulas. Mixed service, temporary disability, age-62 FERS disability recomputation and individual offsets require records-based calculations.

Longevity pension rules reviewed October 2026United States — military, reserve and federal civilian pensionsReviewed 15 October 2026

Your figures

Example values shown

Replace the example with your details, then calculate.

Confirmed regular active-duty longevity retirement; no reserve, disability, REDUX, civilian FERS or special general/flag-officer base.
years
Standard retirement eligibility must already be confirmed.
months
Remaining days do not count as another month.
USD
Set to zero in history mode.
One amount per line, no currency signs or thousands separators. Enter at least 36 months; leave blank in average mode.
years
Chronological rows: annual eligible basic salary, full months. Include at least 36 consecutive months.
years
months
months
years
year
%
points
years
years
At least 36 monthly basic-pay entitlements, excluding allowances.
years
months
%
USD

Your inputs stay in this browser. No account needed.

BEHIND THE NUMBERS

How this calculation works

Apply the selected scheme’s service multiplier to the correct pay average. Civilian modes assess immediate age/service conditions, FERS early commencement and survivor elections.

Worked example

FERS retirement at 62 with 20 years uses 1.1% × 20 × $100,000 = $22,000 annually, or $1,833.33 monthly.

Example result: US$1,833.33

What belongs in the pay average?

Use monthly basic pay to which the member was entitled. Housing and subsistence allowances, bonuses and special pay do not belong in this High-36 base. The statutory selection uses the highest 36 months whether or not consecutive, so three approximate annual salaries can miss a midyear pay change.

Why plan and service matter

Both supported systems use a High-36 pay base, but the pension percentage earned per service year differs. BRS also has savings and continuation-pay features that are outside this pension calculation. The service input should be the credited service used for the retirement multiplier, not simply time since enlistment.

Assumptions and rounding

  • Monthly gross result rounded to cents; the annual equivalent is twelve times that monthly figure.
  • The supplied history contains the complete relevant pay entitlement, not allowances.

Questions about this calculator

Does this include civilian FERS?

Yes, with a consecutive 36-month salary history, ordinary or qualifying special service, age checks and survivor elections.

Can reserve service be entered?

Yes. Reserve points are converted to service years by dividing by 360.