Veterans often treat back pay like a lottery number the VA pulls from nowhere. It is not. It is a calculation, and once you understand the pieces, you can check whether the VA got it right.
The three factors
- Your effective date — where the clock starts
- Your rating over that period — including any staged ratings if severity changed
- Your dependents — which increase the monthly rate at 30% and above
Running the math
The VA multiplies your monthly compensation rate — set each year and adjusted for dependents — by the number of months from your effective date to the grant. If your rating changed over that span, the VA applies each rate to the correct period.
Because rates change yearly, any figure you calculate before the award is an estimate. But you can still sanity-check the VA's number — and we do, because miscalculations happen and they cost you.