The short answer
VA does not simply add your individual service-connected disability ratings together. It uses a combined ratings table, then rounds the final combined value to the nearest 10%. A final value ending in 5 rounds up.
For example, a 50% rating and a 30% rating generally combine to 65%, which rounds to a 70% combined rating, not 80%.
Disabled American Veterans (DAV) highlights this important distinction in its benefits education: combined ratings are not ordinary addition.
Helping The Brave is not affiliated with VA. This article provides general education, not legal, medical, or claims-representation advice.
Why VA uses a different kind of math
VA's method applies each additional rating to the portion left after accounting for the higher ratings. Ratings are generally combined from highest to lowest.
Picture a starting total of 100:
- A 50% rating leaves 50 of that starting total.
- A second rating of 30% applies to the remaining 50.
- Thirty percent of 50 is 15.
- Adding 15 to the first 50 gives a combined value of 65.
This is a way to explain the calculation. It is not a personal judgment about your worth, how hard daily life feels, or whether you can work.
VA uses its official table to determine combined values. You can review the method on VA's combined disability ratings page.
One more rating may not change the rounded result
Now imagine the same Veteran also has a separate 20% rating. For this basic example, assume no special calculation rules apply.
The first two ratings combine to 65. Under VA's table, combining 65 with 20 produces 72. That rounds to a 70% combined rating.
So these two sets of individual ratings can produce the same final combined rating:
- 50% and 30%: combine to 65, then round to 70%.
- 50%, 30%, and 20%: combine to 72, then round to 70%.
The additional rating is still part of the record. It simply does not move this example into the next rounded level.
That is why a new service-connected rating does not always mean a higher monthly payment.
Do not round after every step
A common mistake is rounding too early.
In the example above, you would not turn 65 into 70 before combining the next 20% rating. VA combines the ratings first and applies the final rounding afterward.
Another common mistake is treating an online calculator as the final answer. A calculator can help you understand the basic math, but its result depends on the information entered and the rules it accounts for.
Some cases involve special rules, including a bilateral factor for certain disabilities affecting both arms, both legs, or paired skeletal muscles. Not every pair of conditions qualifies. If that may apply to your record, confirm the current explanation on VA.gov or ask a VA-accredited representative to explain the calculation.
Your combined rating is not your whole benefits picture
Your combined rating helps determine your basic disability compensation rate. It does not explain every part of your payment or every benefit you may qualify for.
For example, Veterans with a combined disability rating of at least 30% may qualify for additional compensation for eligible dependents. Other payment rules may also apply.
Dollar amounts can change, so use VA's current disability compensation rate tables rather than an old screenshot or social media post.
Also, do not assume your combined rating alone answers questions about health care, education, or other benefits. Each benefit has its own eligibility rules.
Read your decision with a simple checklist
When reviewing a VA decision, separate the individual ratings from the final combined rating. Look for:
- Each service-connected condition and its assigned percentage.
- The effective date listed for each rating.
- Your overall combined rating.
- The payment information and any listed dependents.
Different effective dates can mean different combined ratings apply during different periods. Make sure you are comparing ratings that were in effect at the same time.
If something does not make sense, write down the specific question. For example: “Which individual ratings were used to calculate my combined rating for this period?”
DAV provides free benefits help through accredited service officers. You do not have to rely on a comment thread to understand the numbers.
Next step
Find your latest VA decision and list the individual ratings and effective dates. Compare them with VA's official combined ratings explanation. If the result still seems unclear, bring your written questions to a VA-accredited representative for help understanding your decision.
Helping The Brave provides education and resource information. It is not VA and does not provide accredited claims representation. This article is general information, not legal or medical advice.