VA Combined Rating Calculator
Add your individual disability ratings to see your combined VA rating, estimated monthly compensation, and a step-by-step breakdown of how VA math works.
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Understanding VA Math
The VA does not simply add your disability percentages together. Instead, they use a formula called “combined ratings” or “VA math.”
The idea is that each additional disability is applied to your remaining healthy body, not your whole body. For example, if you have a 50% rating, the VA considers you 50% disabled and 50% healthy. A second 30% rating is applied to that remaining 50%, giving you 15% more (30% of 50%), for a combined total of 65%.
The exact combined value is then rounded to the nearest 10% to get your official VA rating. In the example above, 65% rounds to 70%.
Reference: 38 CFR § 4.25 — Combined Ratings Table