VA Back Pay Calculator: Estimate Retroactive Disability Pay
Enter the effective date and rating from your VA decision letter to estimate your retroactive disability pay. The calculator adds up each month from the first benefit month through the month you choose, using the VA rate table in effect that month, your rating and your dependents.
Maintained by Archie Chang · Rates checked against VA and 38 CFR 3.31 October 16, 2026 · Methodology & sources
Rating periods
Use the effective date on your VA decision letter. If your rating went up later, add a row with the new effective date and rating; it replaces the earlier rating from the month after its own date. Enter the combined rating, not individual ratings; the VA disability calculator finds it.
Dependents and end month
The last benefit month to include. It starts as last month; set it to the month before VA began paying the new rate.
Dependents are applied to every month. VA adds each dependent from that dependent's own date, so split the estimate by hand if your family changed during the period. Dependents only matter at 30% and above.
Estimated back pay
Enter an effective date to see an estimate.
What this estimate includes and leaves out
Start of payment. Payment starts the first day of the month after the effective date (38 CFR 3.31). An effective date in March means the first benefit month is April.
Rates. Each month uses the table effective the December 1 before it. Look at any year's rates in the 2025 rates and history table or the 2026 pay chart.
Dependents. They are held constant for every month here. VA adds dependents from their own dates, such as a marriage or birth, so the real amount can differ.
Not included: special monthly compensation (SMC), individual unemployability (TDIU), withholding for an accredited attorney or agent fee (often 20% of past-due benefits), offsets for military retired, separation or severance pay, debts, and hospitalization or incarceration reductions. VA decides the actual amount. Pending legacy appeals or effective-date disputes can change it. This page is general information, not legal advice.
VA back pay questions
How is VA back pay calculated?
Back pay is the compensation owed for the months between your effective date and the date VA starts paying the new rating. This estimate prices each of those months with the VA rate table in effect that month, because VA changes its rates every December 1, and adds the months up.
When does VA back pay start?
Payment starts the first day of the month after the month of the effective date (38 CFR 3.31). If your effective date is March 15, the first benefit month is April. Between those dates you are treated as in receipt of benefits for other VA purposes.
Which date do I use as the effective date?
Use the effective date on your VA decision letter. It is often the date VA received your claim, but it can be earlier or later depending on your case. If you were granted a higher rating later, add a second row with that rating’s effective date.
Why is my VA back pay different from this estimate?
This calculator excludes special monthly compensation, individual unemployability (TDIU), withholding for an accredited attorney or agent fee (often 20% of past-due benefits), offsets for military retired, separation or severance pay, debts, and reductions during hospitalization or incarceration. It also holds your dependents constant, while VA adds each dependent from that dependent’s own date. A pending legacy appeal or an effective-date dispute can change the amount too.
Does back pay include months before December 2018?
Not in this calculator. It has VA rate tables from December 1, 2018 onward, and it shows how many earlier months were left out rather than guessing their rates.