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VA Combined Ratings Table: How "VA Math" Really Works

VA disability ratings don't add — they combine under 38 CFR §4.25. A 50% and a 30% rating is 70%, not 80%. Click any combination below for the exact step-by-step math.

Combined rating for any two ratings

Find your higher rating in the left column and your second rating across the top. Every cell links to a full walkthrough of that combination.

	10%	20%	30%	40%	50%	60%	70%	80%	90%	100%
10%	20%	30%	40%	50%	60%	60%	70%	80%	90%	100%
20%	30%	40%	40%	50%	60%	70%	80%	80%	90%	100%
30%	40%	40%	50%	60%	70%	70%	80%	90%	90%	100%
40%	50%	50%	60%	60%	70%	80%	80%	90%	90%	100%
50%	60%	60%	70%	70%	80%	80%	90%	90%	100%	100%
60%	60%	70%	70%	80%	80%	80%	90%	90%	100%	100%
70%	70%	80%	80%	80%	90%	90%	90%	90%	100%	100%
80%	80%	80%	90%	90%	90%	90%	90%	100%	100%	100%
90%	90%	90%	90%	90%	100%	100%	100%	100%	100%	100%
100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%

How the VA combines ratings

The VA starts with your largest rating, then applies each additional rating only to the percentage of you it still considers non-disabled. The result — the "combined value" — is looked up or computed per the 38 CFR §4.25 table, then rounded to the nearest 10 to set your final combined rating (values ending in 5 round up).

Two things this table can't capture:

1. The bilateral factor. Paired arms or legs get an extra 10% factor before combining with everything else.
2. More than two conditions. Each extra rating combines into the running total the same way.

Our free calculator handles both:

Open the free VA disability calculator See all free veteran tools

Educational only. Your actual combined rating is set by the VA in your decision letter based on the rating assigned to each condition. If the numbers don't match what you expected, ASTRID can help you decode your decision letter — free to try.