How the VA Combines Multiple Disability Ratings Into One Payment

What combined rating means and why it matters

When you have more than one service-connected disability, the VA doesn't simply add your individual ratings together. Instead, it uses a combined rating — a single percentage that reflects how your disabilities work together to limit your ability to work and function. This combined rating determines your monthly payment amount.

The VA's approach recognizes that disabilities interact. A 20% back rating combined with a 20% knee rating doesn't equal 40% — the VA assumes your back condition already limits what your knee can do, and vice versa. The combined rating formula accounts for this overlap, which is why your combined rating is typically lower than the sum of your individual ratings.

Understanding how this works matters because it affects your payment, your may be able to access for certain benefits, and what happens if you file a new claim or appeal an existing one.

Key Takeaways

• The VA uses a mathematical formula to combine multiple ratings rather than adding them, which usually results in a combined rating lower than the sum of individual percentages.
• Your combined rating determines your monthly disability compensation payment, and it changes only when you file a new claim, appeal a decision, or the VA schedules a routine exam.
• The VA rates each condition separately first, then applies the combined rating formula in a specific order — highest rating first, then each additional condition in descending order.
• You can request a reconsideration if you believe a rating is incorrect, but the combined rating itself is not something you dispute separately.

How the VA calculates combined ratings

The VA starts by rating each of your service-connected conditions on its own, using the Schedule for Rating Disabilities. Each condition gets a percentage: 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100%. These are your individual ratings.

Then the VA applies a formula that works like this: take your highest individual rating, then subtract a percentage of the remaining capacity. For each additional condition, the VA subtracts a percentage of what's left. The formula assumes that if you're already 50% disabled, your second condition can't disable you more than 50% of what remains.

For example, if you have a 50% rating and a 30% rating, the VA doesn't award 80%. Instead, it takes 50%, then applies 30% to the remaining 50% of capacity (which equals 15 percentage points), giving you a combined rating of 65%. If you add a third condition rated at 20%, the VA applies 20% to what remains after the first two (which is 35 percentage points), adding 7 percentage points, for a combined rating of 72%.

The VA rounds the final combined rating to the nearest 10%. A combined rating of 72% becomes 70%. A combined rating of 75% becomes 80%. This rounding rule applies to all combined ratings except 50%, which stays at 50%.

When your combined rating changes

Your combined rating is not recalculated automatically every year. It changes only in specific situations: when you file a new claim for a different condition, when you appeal an existing rating decision, when the VA schedules you for a routine reexamination, or when you request a higher rating for an existing condition.

If you have a 40% combined rating today and file a new claim for tinnitus (a 10% condition), the VA will recalculate your combined rating to include tinnitus. Your new combined rating might be 44%, which rounds to 40%, or it might be higher depending on your other conditions — but it will be recalculated.

Routine reexaminations happen when the VA believes your condition may have improved or worsened. The VA schedules these based on the nature of your disability and how long ago your last exam was. If you're examined and your individual ratings change, your combined rating is recalculated.

Reading your combined rating decision letter

When the VA sends you a rating decision, it lists each of your service-connected conditions, the individual rating for each one, and then your combined rating at the bottom. The letter also shows your effective date — the date your combined rating takes effect — and your new monthly payment amount.

The decision letter may also show a schedular rating (the rating the VA assigns based on the Schedule for Rating Disabilities) and a nonschedular rating (a rating the VA assigns when your condition doesn't fit neatly into the schedule, usually because of how it affects your ability to work). Both types of ratings feed into your combined rating the same way.

If the letter includes a reason for your combined rating, it will explain which conditions were rated and in what order they were combined. If you disagree with any individual rating, you can appeal that specific rating — but you cannot appeal the combined rating formula itself, as it is set by federal law.

What to do if you think your combined rating is wrong

If you believe your combined rating is incorrect, the first step is to check whether the problem is with an individual rating or with how the ratings were combined. Request your VA rating decision and review each individual rating listed.

If an individual rating is wrong — for example, you believe your back condition should be 30% instead of 20% — you can file a Notice of Disagreement with the VA within one year of the rating decision. This starts an appeal process that may take several months.

If all your individual ratings are correct but you believe they were combined incorrectly, contact the VA to ask them to review the calculation. While the formula itself cannot be changed, calculation errors do happen. The VA can correct a mathematical mistake without requiring a formal appeal.

You can also request a higher rating for an existing condition by filing a new claim. This is different from appealing — you're not saying the old rating was wrong, you're saying your condition has worsened since the last rating.

Combined ratings and other VA benefits

Your combined rating affects more than just your monthly payment. A combined rating of 50% or higher may make you unemployable under VA rules, which can change your may be able to access for certain programs. Some VA health care priorities are based on combined rating. Survivor benefits for your family may also depend on your combined rating at the time of your death.

If you're receiving VA disability compensation and also receiving military retirement pay, your combined rating determines how much of your retirement you must offset (give up) to receive disability compensation. The offset rules are complex and depend on when you retired and your specific situation.

Your combined rating does not directly affect Social Security Disability Insurance (SSDI) or Supplemental Security Income (SSI), which have their own separate evaluation process. However, your VA rating decision can be useful evidence if you apply for SSDI or SSI.

Frequently Asked Questions

Can I see the exact formula the VA uses to combine my ratings?

Yes. The VA publishes a Combined Ratings Table in its rating schedule. You can find it on VA.gov or request it from your regional office. The table shows what combined rating results from any combination of individual ratings, so you can verify your own calculation.

If I have a 50% rating and get another 50% condition, will my combined rating go to 100%?

No. A 50% rating combined with another 50% rating equals 75%, which rounds to 80%. The formula applies 50% to the remaining 50% of capacity, adding 25 percentage points to your original 50%.

What happens to my combined rating if I recover from one of my conditions?

If the VA determines that one of your conditions has resolved, that condition is removed from your rating and your combined rating is recalculated without it. This usually happens during a routine reexamination or if you request one. Your payment amount may decrease.

Does the order in which conditions are listed affect my combined rating?

No. The VA always applies the formula in the same order: highest individual rating first, then each additional condition in descending order by percentage. The order conditions appear on your decision letter does not change the result.

Can I appeal just the combined rating without appealing individual ratings?

No. The combined rating is a mathematical result of individual ratings, not a separate decision. If you disagree with your combined rating, you must identify which individual rating or ratings are incorrect and appeal those specific ratings.