VA pays at the 100% rate in three ways: a single condition rated 100%, several ratings whose combined value reaches 95 or more, which VA rounds up to 100%, or Total Disability based on Individual Unemployability (TDIU), which pays the 100% rate while your rating percentage stays lower. This guide explains the math behind the combined-rating route and why each new rating adds less the closer you get to 100.
What does it take to reach 100% by combining ratings?
VA does not add percentages. Under 38 CFR 4.25, it ranks your ratings from highest to lowest, applies each to the efficiency that is left, and rounds only the final value to the nearest 10. Values ending in 5 round up, so a combined value of 95 becomes 100%, while 94 becomes 90%.
| Ratings | Combined value | Combined rating |
|---|---|---|
| 90% and 50% | 95 | 100% |
| 80% and 80% | 96 | 100% |
| 80% and 70% | 94 | 90% |
| 70% and 70% | 91 | 90% |
Your VA decision shows only the rounded number. A 90% combined rating can come from a value anywhere from 85 to 94, so you can only see how close you are by combining your individual ratings yourself. Our guide to the VA combined ratings formula walks through the steps.
How much does a new rating add near the top?
A new rating applies only to the points that are left, so it adds the same share of a shrinking number. This table shows the points added to a combined value, before rounding.
| Combined value now | New 10% rating | New 30% rating | New 50% rating | New 70% rating |
|---|---|---|---|---|
| 90 | 1 | 3 | 5 | 7 |
| 80 | 2 | 6 | 10 | 14 |
| 70 | 3 | 9 | 15 | 21 |
From a combined value of 90, only a new rating of 50% or more adds the 5 points needed to reach 95. A new 10% or 30% rating leaves you at 90%. VA assigns each rating from the medical evidence, so these numbers show how the formula works, not what any claim will receive. Results vary.
How does the bilateral factor fit in?
If you have disabilities in both arms, both legs or paired skeletal muscles, 38 CFR 4.26 combines the two sides first and adds 10% of that value, rather than combining it. Each side needs a rating that is compensable, which means at least 10%. For two legs rated 20% each, the sides combine to 36, 10% of 36 is 3.6, and the result is about 40, which then counts as one disability in the rest of the math. See our guide to the VA bilateral factor for more.
What are the three ways to be paid at 100%?
| Route | How it works | Work limits |
|---|---|---|
| Single 100% rating | One condition meets the rating criteria for 100% | No earnings limit |
| Combined 95 or more | Several ratings combine to 95 or higher, rounded to 100% | No earnings limit |
| TDIU | Service-connected disabilities keep you from substantially gainful employment. Paid at the 100% rate, with your rating percentage unchanged. | Only marginal or protected work fits |
TDIU has schedular thresholds of one disability rated 60% or more, or two or more with one at 40% or more and a combined rating of 70% or more. For how the first two routes differ from TDIU, see TDIU vs. 100% schedular.
Permanent and Total (P&T) is a separate finding. Reaching 100% describes the rating level, while P&T means VA considers the total disability permanent. A 100% rating with a future exam scheduled generally has not been made permanent, so check your decision letter for wording about permanence.
How do secondary conditions fit into the math?
A secondary condition is one caused or aggravated by a service-connected condition, such as nerve symptoms that come from a service-connected back condition. If VA grants service connection and rates it, that rating enters the same combination math as any other. It needs medical evidence of the link, and VA decides each condition on its own facts. Our guide to secondary service connection covers how the link is shown.
To test your own numbers, use the table on VA’s disability ratings page or the free VA disability calculator. If you plan to file or appeal, free help is available through VA.gov and VA-accredited representatives, and Woobie does not file claims.
Frequently asked questions
Is a 100% combined rating the same as P&T?
No. A 100% rating describes the level of pay. Permanent and Total is VA’s separate finding that the total disability is permanent. Check your decision letter for wording about permanence and any future exam VA plans to schedule.
Can I work with a 100% combined rating?
VA does not apply an earnings limit to a schedular 100% rating, whether it comes from a single rating or from combined ratings. TDIU is different, because it requires that you cannot hold substantially gainful employment.
How do I find my combined value before rounding?
Your decision letter shows only the rounded rating. Rank your individual ratings from highest to lowest, combine them two at a time with VA’s combined ratings table, and round only the final number. A calculator can do the same math as an estimate.
Does a 95 combined value really become 100%?
Yes. Under 38 CFR 4.25, VA rounds the final combined value to the nearest 10 and values ending in 5 round up, so 95 becomes 100% and 94 becomes 90%.
See where your ratings land. Use Woobie’s free VA disability calculator to estimate your combined rating and monthly pay. Try the free calculator →