Month after effective date · year-by-year rates · increases & new claims

VA Back Pay CalculatorRetroactive VA Disability Pay From Your Effective Date, With Yearly COLAs

VA back pay is owed from the first day of the month after your effective date until regular payments start, at the rate in force each year, and for an increase it is the difference between your new and old rate. Enter your dates, ratings and dependents to estimate your retroactive pay year by year.

Rates rebuilt from the VA 2026 compensation tables and each December COLA; start-of-pay rule from 38 CFR 3.31.

Manzoor Ahmad, developer of the VA Back Pay Calculator
Built and tested by Manzoor AhmadCalculator developer · Last reviewed October 30, 2026
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+1 monthPay starts after effective date
2.8%Dec 2025 COLA
0%Tax on back pay
2018+Rate years covered

Your claim

Estimated VA back pay
$0

Going forward

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How VA back pay is calculated

VA back pay (retroactive pay) is the compensation owed from your effective date until the VA starts paying the new rate. Payment begins on the first day of the month after the effective date, and each month is paid at the rate in force at the time, so months before December 1, 2025 use lower, pre-COLA rates. For an increase, you are owed the difference between the new and old rate.

Your effective date is usually the date the VA received your claim or intent to file, or the day after discharge if you filed within a year of leaving service. It is printed on your decision letter.

The formula

First paid month = month after your effective date For each month until regular payments start: owed += rate(new rating, that year) − rate(old rating, that year) Earlier years’ rates = 2026 rate ÷ the COLAs since that year

Prior years are rebuilt from the 2026 table using each December COLA, which matches the VA’s published past rates to within cents. The VA’s own figure comes with your award letter.

VA compensation COLAs used

Rates effectiveCost-of-living increase
Dec 1, 20252.8%
Dec 1, 20242.5%
Dec 1, 20233.2%
Dec 1, 20228.7%
Dec 1, 20215.9%
Dec 1, 20201.3%
Dec 1, 20191.6%
Dec 1, 20182.8%

Why your back pay might differ

Dependents added later

Dependents are paid from the date the VA has proof of them, which can be later than your effective date.

Offsets

Military retired pay, separation pay, severance pay and drill pay for the same days can reduce or delay back pay.

Staged ratings

The VA can assign different ratings for different periods. Run each period separately and add them.

Timing

Back pay usually arrives by direct deposit within a few weeks of the decision.

How to use this VA back pay calculator

  1. Enter your effective dateFrom your decision letter.
  2. Enter when regular payments startUsually the month after your decision.
  3. Enter old and new combined ratingsOld rating 0% for a first claim.
  4. Add dependentsThey raise the rate at 30% and above.
Keep going

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Straight answers

VA back pay FAQ

Multiply each month from the month after your effective date by the difference between your new and old monthly rate for that year, then add them up.

On the first day of the month after your effective date (38 CFR 3.31).

Usually the date the VA received your claim or intent to file, or the day after discharge if you filed within one year of separating. It appears on your decision letter.

Yes. Each month is paid at the rate in force then, so older months are at lower, pre-COLA rates.

Usually within a few weeks of the rating decision, by direct deposit.

No. Like all VA disability compensation, it is tax-free.

Yes, by offsets for military retired pay, separation or severance pay, or drill pay for the same days.

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Manzoor Ahmad

Manzoor Ahmad

Calculator developer & web designer · 13+ years in web development and SEO

Last reviewed: October 30, 2026

I am a pharmacist turned tech geek, and I design, code and test every calculator on DexoCalc myself. I have not served in the military, so this tool does not run on opinion: each month uses the 2026 VA rate scaled back by the published December COLAs, and the start-of-pay rule follows 38 CFR 3.31; I checked the rebuilt 2025 rates against the VA’s past-rates page.

Spot a result that does not match an official source? Tell me and I will re-check it.

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Sources

  1. VA: Current veterans disability compensation rates
  2. VA: Past rates 2025
  3. 38 CFR 3.31: Commencement of the period of payment

Disclaimer: DexoCalc is independent and not affiliated with the Department of Defense (Department of War), the Department of Veterans Affairs or any military branch. Results are educational estimates; official records and your chain of command decide.

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