How to Calculate Your High-3 Military Retirement Pay

To calculate High-3 military retirement pay, take the average of your highest 36 consecutive months of basic pay and multiply it by 2.5% for each year of service. Twenty years produces a 50% multiplier; thirty years produces 75%. Everything else in the calculation is a matter of identifying the right 36 months, counting partial years correctly, and understanding what comes off the gross figure before it reaches your bank account.

The Formula and a Worked Example

The full calculation is one line of arithmetic:¹

Gross Monthly Retired Pay = High-36 Average × (Years of Service × 2.5%)

Say you retire as an E-7 with exactly 20 years of active duty. Your basic pay climbed during your final three years as you crossed longevity steps, and your high-36 average works out to $7,200. Multiply $7,200 by 50%, and your gross monthly retirement check is $3,600.

An O-5 who stays for 26 years with a high-36 average of $11,400 gets a 65% multiplier, producing $7,410 per month. Every promotion that lands inside your highest-paid window raises the average, and every additional year of service adds another 2.5% to the multiplier.

Both numbers are gross pay. Deductions and offsets discussed further down reduce what actually deposits each month.

Finding Your High-36 Average

The “High-3” label refers to the 36 consecutive months of basic pay that produce the highest average across your entire career.² For most people, that window is the final three years of active duty, because basic pay generally climbs with rank and time in service. It doesn’t have to be. If you were promoted, then moved to a lower-paying billet before retiring, an earlier 36-month stretch might produce a higher average.

Only basic pay counts. Housing allowances, subsistence stipends, hazardous duty pay, bonuses, and every other form of special compensation are excluded.¹ For each of the 36 months, use the basic pay rate from the Department of Defense pay tables that matched your pay grade and years of service that month. Add the 36 monthly figures and divide by 36. That result is your retired pay base.

Hold onto your Leave and Earnings Statements from the final years of service. If you suspect DFAS is using a rate that doesn’t match your records, the historical DoD pay tables let you cross-reference the exact figure for any grade and longevity step in any year.

Applying the Service Multiplier

Each year of active-duty service earns 2.5% toward your multiplier.³ Partial years count too: each additional month adds roughly 0.208% (one-twelfth of 2.5%). Retiring at 20 years and 6 months gives you a 51.25% multiplier instead of an even 50%.

How the multiplier scales at common career lengths:⁴

20 years: 50%
24 years: 60%
26 years: 65%
30 years: 75%
35 years: 87.5%
40 years: 100%

Regular (non-disability) retirement has no multiplier cap. A member who serves beyond 40 years can exceed 100%. Disability retirement is different: the multiplier for a medical retirement under Chapter 61 is capped at 75% by law, regardless of years served.⁴

A regular pension also requires at least 20 years of active-duty service. There is no partial pension at 15 or 18 years. Medical retirement is the exception: a member found unfit for duty with a disability rating of at least 30% can retire with fewer than 20 years, though the multiplier works differently in that scenario.⁴

Whether High-3 Is Actually Your Plan

Your retirement plan depends on your Date of Initial Entry to Military Service (DIEMS). If you first entered any branch between September 8, 1980, and December 31, 2017, High-3 is your default plan.⁴ Anyone who joined on or after January 1, 2018, is automatically in the Blended Retirement System, which uses a smaller multiplier combined with government contributions to a Thrift Savings Plan account. The formula in this article does not apply to BRS members.

Within the High-3 group, there is a split. Members who entered between September 8, 1980, and July 31, 1986, are locked into High-3. Members who entered on or after August 1, 1986, had a choice at the 15-year mark: stay with High-3 or take a $30,000 Career Status Bonus and switch to REDUX, which uses a less generous multiplier formula before age 62.⁵ If you turned down that bonus, you are in High-3.

Reserve and National Guard: Converting Points to Years

Reserve and Guard members inside the High-3 DIEMS window use the same formula, but the inputs work differently. Instead of counting years of active duty, the reserve system converts retirement points into an equivalent number of years by dividing total points by 360.¹ A reservist with 7,200 points has the equivalent of 20 years and a 50% multiplier.

Eligibility differs too. You need at least 20 qualifying years, but retirement pay doesn’t start until age 60. One exception: for every 90 days of active-duty service performed after January 28, 2008, the eligibility age drops by three months, down to a floor of age 50.⁶ A reservist who deployed frequently may start collecting before turning 60.

The high-36 average still looks at the highest 36 months of basic pay, but because many reservists have limited active-duty pay periods, the window may include months from multiple activations rather than one continuous stretch. If total active-duty service was less than three years, DFAS averages whatever months of active-duty basic pay exist rather than requiring a full 36-month window.¹

From Gross Pay to What You Actually Receive

The formula gives you a gross monthly figure. Several things move it up or down from there.

Annual Cost-of-Living Adjustments

Your retired pay doesn’t stay frozen. DFAS applies an annual COLA based on the Consumer Price Index. The adjustment equals the percentage increase between the average third-quarter CPI of the current year and that of the prior year. If the CPI drops, the adjustment is zero rather than negative, so your pay never decreases due to deflation. The COLA typically takes effect in January. In years with no increase, the next positive adjustment reaches back to the last year that had one, so you don’t permanently lose ground from a zero-COLA year.⁷

Survivor Benefit Plan Premium

If you enroll in the Survivor Benefit Plan to leave a monthly annuity to your spouse or another eligible beneficiary, the premium is up to 6.5% of your gross retired pay, deducted automatically each month.⁸ Your beneficiary receives 55% of your covered retired pay as a monthly annuity for life.⁹ Using the E-7 with $3,600 in gross retired pay, full SBP coverage runs roughly $234 per month and would provide the surviving spouse about $1,980 per month.

You can elect full coverage (based on your entire retired pay) or reduced coverage (based on a lower specified amount), which lowers both premium and eventual annuity. The election you make at retirement is essentially permanent. Changes are allowed only in narrow circumstances, such as a new marriage or the birth of a child.

The VA Disability Offset

If you receive VA disability compensation alongside your pension, the default rule reduces your retired pay dollar for dollar by the amount of your VA payment.¹⁰ Two programs can restore part or all of the offset: Concurrent Retirement and Disability Payment (CRDP), for retirees with a VA rating of 50% or higher and at least 20 years of service, which restores the waived retired pay automatically,¹¹ and Combat-Related Special Compensation (CRSC), for combat-related disabilities with a VA rating of at least 10%, which is tax-free.¹² You cannot receive both; if you qualify for both, DFAS pays whichever produces the higher benefit.

Taxes

Military retired pay is subject to federal income tax. You set your withholding preferences on DD Form 2656 at retirement and can update anytime with a new IRS W-4 through myPay or DFAS.¹³ State treatment varies widely. More than three dozen states either have no income tax or fully exempt military retirement pay; others tax it in full or in part, sometimes with age or income conditions.

Division in Divorce

A court can award a former spouse a share of your retired pay. DFAS will pay a former spouse directly up to 50% of your disposable retired pay under the Uniformed Services Former Spouses’ Protection Act, or up to 65% when combined with a separate income withholding order such as child support.¹⁴ Disposable retired pay is gross pay minus certain deductions, including SBP premiums and VA waiver amounts, so the base for that percentage is smaller than the gross figure the formula produces.

1
Defense Finance and Accounting Service. Estimate Your Pay
2
Office of the Law Revision Counsel. 10 USC 1407 – Retired Pay Base for Members Who First Became Members After September 7, 1980: High-36 Month Average
3
Office of the Law Revision Counsel. 10 USC 1409 – Retired Pay Multiplier
4
Military Compensation and Financial Readiness. Military Retirement
5
My Army Benefits. Retired Pay
6
Office of the Law Revision Counsel. 10 USC 12731 – Age and Service Requirements
7
Military Compensation and Financial Readiness. Retirement Cost of Living Adjustments (COLA)
8
Defense Finance and Accounting Service. Survivor Benefit Plan Cost
9
Soldier for Life. Survivor Benefit Plan (SBP) Fact Sheet
10
Defense Finance and Accounting Service. VA Waiver and Retired Pay – CRDP – CRSC
11
Military Compensation and Financial Readiness. Concurrent Retirement and Disability Payments (CRDP) and Combat-Related Special Compensation (CRSC)
12
Veterans Affairs. Combat-Related Special Compensation (CRSC)
13
Defense Finance and Accounting Service. Federal Income Tax Withholding
14
Defense Finance and Accounting Service. Frequently Asked Questions