How the VA combined rating works
When you have more than one service connected condition, VA does not simply add the percentages together. It uses a combined ratings table (38 CFR 4.25) that works from your most severe condition down, applying each additional rating to the part of you that is still considered healthy. That is why two 50 percent ratings combine to 75 percent, not 100, and why the final number is rounded to the nearest 10. This free VA disability rating calculator runs that math for you and applies the bilateral factor when paired limbs or organs are involved.
Who this helps
Veterans with two or more rated conditions who want to see their combined rating and estimated monthly compensation. Veterans deciding whether a new claim or an increase is worth pursuing. Anyone trying to understand why their ratings do not add up the way they expected.
When to use it
Use it once you have an estimated or assigned percentage for each condition. If you are still figuring out what a single condition might rate, start with the VA Rating Estimator, then bring each number here to combine them. To see what a rating change could be worth retroactively, use the VA Backpay Estimator.
The bilateral factor
When you have conditions affecting both arms, both legs, or paired organs like the eyes or ears, VA adds an extra 10 percent of the combined value of those paired ratings before combining them with the rest. It is easy to miss, and it can nudge your final rating up. Mark paired conditions in the calculator so the estimate reflects it.
Common mistakes and misunderstandings
Adding the percentages together and expecting them to reach 100. Forgetting the bilateral factor for paired limbs or organs. Assuming the combined number is not rounded, when VA rounds to the nearest 10 at the end. Treating the estimated monthly amount as exact, when dependents, SMC, and special rates can change it. Any calculator, including this one, gives an estimate. The official figure comes from VA.
Frequently asked questions
Why don't my VA ratings add up to 100 percent?
VA uses a combined ratings table, not simple addition. Each additional condition is applied only to the portion of you still considered healthy, so the total grows more slowly as it climbs. The final number is rounded to the nearest 10 percent.
What is the bilateral factor?
It is an extra 10 percent VA adds to the combined value of conditions affecting paired body parts, such as both knees or both ears, before combining them with your other ratings. It can raise your final combined rating.
Does a higher combined rating mean more monthly pay?
Generally yes. Higher combined ratings move you to a higher monthly compensation amount, and ratings of 30 percent or more can add payments for dependents. Exact amounts come from VA's current compensation tables.
Is this calculator affiliated with the VA?
No. Vet Claims Guide is a free, independent, veteran built educational resource. It does not file claims or represent veterans. Confirm your combined rating and pay at VA.gov or with an accredited representative.