VA Disability Ratings Explained: Combined Ratings, Percentages, and How Compensation Works
The VA does not add ratings together. This guide explains the whole-person method, the bilateral factor, rounding, and what your combined rating does and does not decide — with no dollar figures, because the rate table must be read from VA.gov.
A veteran with ratings of 50% and 30% does not have an 80% combined rating. The VA combines ratings by a method that applies each new rating only to the part of the person that remains after the earlier ratings — the whole-person method in 38 CFR section 4.25. It surprises almost everyone the first time, it decides the monthly compensation rate, and it is the reason two veterans with the same list of conditions can have different combined ratings if their ratings are ordered differently. This guide works through the method step by step, with the bilateral factor and the rounding rule that finishes every calculation.
- Ratings are combined, not added. Each rating applies to the efficiency that remains after the higher ratings: 50% plus 30% combines to 65%, which rounds to a 70% combined rating.
- The bilateral factor adds a small boost when qualifying disabilities affect both arms, both legs, or paired muscles: the paired ratings are combined first, then 10% of that combined value is added before combining with the rest.
- The final combined value is rounded to the nearest 10% at the very end only — 65 rounds up to 70, 64 rounds down to 60. Intermediate values are not rounded. Dollar amounts are not printed here: read the current rate table at VA.gov, because rates change with the annual cost-of-living adjustment.
What a disability rating is
A VA disability rating is a percentage, from 0% to 100% in steps of 10%, assigned to a service-connected condition. It is meant to reflect the average impairment of earning capacity caused by that condition, judged against the rating schedule in 38 CFR Part 4. Each condition is rated on its own diagnostic code, with its own criteria — a knee, a hearing loss, and a mental health condition each follow different rules, and each can be rated separately.
A 0% rating is not a rejection. It means the VA agrees the condition is service-connected but finds it does not currently impair earning capacity enough for a compensable percentage. A 0% rating still establishes service connection, still counts for VA health care priority, and can be increased later if the condition worsens. Ratings can also be temporary, for example during recovery from surgery, and they can be re-examined when the VA has reason to believe a condition has changed.
The combined rating is a separate number. It is the single percentage that represents all of a veteran’s service-connected conditions together, and it is the number that selects the row of the compensation rate table. A veteran has one combined rating at a time, however many individual ratings sit behind it.
Try the method on your own figures with the VA Disability Calculator.
The whole-person method, step by step
The method starts with a whole person at 100% efficiency. The highest rating is applied first, and what remains is the efficiency left. The next rating is applied to that remainder, not to the original 100%. Each further rating is applied to whatever remains after all the higher ones. The combined value is 100 minus the final remainder, and only then is it rounded to the nearest 10%.
Worked example: ratings of 50% and 30%. Start at 100. Apply 50%: 50 remains. Apply 30% to the remaining 50: 30% of 50 is 15. Combined value: 50 + 15 = 65. Round to the nearest 10%: 70%. The veteran’s combined rating is 70%, not 80%.
Worked example with three ratings: 50%, 30%, and 20%. After the first two, the combined value is 65 and 35 remains. Apply 20% to 35: 7. Combined value: 72. Round: 70%. Adding the three ratings gives 100%; the VA method gives 70%. That gap is the whole point of the method: each new condition can only impair the capacity that is still there.
| Ratings | Simple addition | VA combined value | Combined rating |
|---|---|---|---|
| 50% + 30% | 80% | 65 | 70% |
| 50% + 30% + 20% | 100% | 72 | 70% |
| 70% + 50% | 120% | 85 | 90% |
| 70% + 10% | 80% | 73 | 70% |
| 60% + 40% | 100% | 76 | 80% |
Order matters, and the VA fixes it: ratings are combined from the highest down. Combining in a different order can give a different intermediate value, so the descending order is part of the rule, not a convenience. The calculator follows the same order, and it never rounds until the end.
The bilateral factor
The bilateral factor is an extra step for paired disabilities. When a veteran has compensable ratings for both arms, both legs, or paired skeletal muscles, the VA combines the paired ratings first, then adds 10% of that combined value, and then combines the result with the other ratings. The 10% is 10% of the paired combined value — not 10 percentage points added to the final rating.
Example, from the VA’s own illustration pattern: ratings of 30% and 10% for the two knees combine to 37 before the factor (30 + 10% of 70 = 37). The bilateral factor adds 10% of 37, which is 3.7, giving 40.7, carried as 41 in the table method. That paired value then combines with the veteran’s other ratings. Without the factor, the same two ratings would combine to 37 and round, with other ratings, to a lower result.
The factor applies only to qualifying paired conditions, and it must be applied in the order the regulation requires: pair first, factor second, then combine with the rest. A left knee and a right wrist do not qualify, because they are not a pair. If leaving a disability out of the bilateral group would give a higher combined rating, the VA is required to use the more favourable result — a detail worth knowing, because it means the factor is never supposed to hurt.
Rounding: only at the end
The final rounding rule is simple and unforgiving: the combined value is rounded to the nearest 10%, and values ending in 5 round up. A combined value of 65 becomes 70. A combined value of 64 becomes 60. A combined value of 95 or more becomes 100. One point of combined value can therefore move the rating by a full 10 points — and with it, the compensation row.
What must not be rounded is everything before the end. The VA’s combined ratings table works in whole numbers, and the intermediate combined values are carried forward unrounded. Rounding after each pair of ratings, a tempting shortcut, gives wrong answers whenever an intermediate value sits near a rounding boundary. The calculator carries the exact remainder through every step and rounds once, at the end, exactly as the regulation does.
The same discipline applies to the bilateral factor. The paired combined value is worked out, the factor is applied, and the result is combined with the remaining ratings before any rounding. Shortcuts at any stage are how a correct-looking calculation lands on the wrong rating.
What the combined rating decides — and what it does not
The combined rating selects the compensation rate. Rates are set in a table by combined rating and dependent status, and they are adjusted annually for the cost of living, effective December 1. Dependent additions — for a spouse, children, or dependent parents — begin at a combined rating of 30%. At 10% and 20%, the rate is the same regardless of dependents. That 30% threshold is one of the most consequential lines in the system: a combined value of 29 rounds to 30 and brings dependent additions with it, while 24 rounds to 20 and does not.
This article deliberately prints no dollar figures. Secondary tables disagree with each other, rates are adjusted every December, and a stale dollar figure is worse than no figure at all. The current rates are published by the VA, and the compensation table on VA.gov is the only source that matters for a decision. Use the calculator for the percentage, then read the dollar amount from the VA’s current table for your combined rating and household.
The combined rating also gates other things, but not everything. Total Disability based on Individual Unemployability (TDIU) pays at the 100% rate when service-connected conditions prevent substantially gainful employment, even when the combined rating is below 100%. Special Monthly Compensation covers specific severe situations — loss of use, aid and attendance, housebound status — on top of the combined rating. A combined rating is the foundation, not the whole building.
Mistakes and what to check
The commonest mistake is adding the ratings. It overstates the combined rating in every case with more than one condition, and it creates expectations the decision letter will not meet. The second mistake is rounding early — rounding after each pair, or rounding the bilateral factor before combining. The third is applying the bilateral factor to conditions that are not a qualifying pair, which inflates the result and then collapses on review.
Check three things on any combined-rating result. First, are the ratings in descending order, highest first? Second, was each rating applied to the remainder, not to 100? Third, was rounding applied once, at the very end? If all three hold, the percentage is right, whatever the dollar amount turns out to be. If any one fails, recompute before relying on the answer.
Finally, remember that the calculator estimates a percentage from the ratings entered. It does not decide whether a condition is service-connected, what rating a condition deserves, or whether a rating will be increased on appeal. Those are VA decisions, made on evidence, and a rating calculator is a planning tool, not a determination.
Frequently asked questions
Why don’t my VA ratings add up?
Because the VA combines ratings with the whole-person method in 38 CFR 4.25. Each rating applies only to the efficiency remaining after the higher ratings. A 50% rating and a 30% rating combine to 65, which rounds to 70% — not 80%.
How does the VA round a combined rating?
The combined value is rounded to the nearest 10% once, at the very end. Values ending in 5 round up: 65 becomes 70, 64 becomes 60, 95 becomes 100. Intermediate values are never rounded.
What is the bilateral factor?
When qualifying disabilities affect both arms, both legs, or paired skeletal muscles, the VA combines the paired ratings first and adds 10% of that combined value before combining with the other ratings. It is 10% of the paired value, not 10 extra percentage points.
Do dependents change the rate at every rating?
No. Dependent additions begin at a combined rating of 30%. At 10% and 20% the rate is flat regardless of dependents. From 30% upward, a spouse, children, or dependent parents add to the monthly amount.
What dollar amount does my combined rating pay?
That depends on the current VA compensation rate table, which is adjusted annually for the cost of living effective December 1. This article does not print dollar figures because secondary tables disagree and go stale. Read the current table at VA.gov for your combined rating and household.
Can my combined rating be 100% if my ratings add to less than 100%?
Yes, in effect. A combined value of 95 or more rounds to 100%. For example, ratings combining to 95 or 96 round to a 100% combined rating. Separately, TDIU can pay at the 100% rate when service-connected conditions prevent substantially gainful employment even with a lower combined rating.
Try it on the calculator
Enter each of your ratings, highest first, and see the combined value step by step — the remainder after each rating, the bilateral factor where it applies, and the final rounded combined rating.
Open the VA Disability Calculator →- 1VA Disability Calculator
Combine your ratings with the whole-person method and see the rounding.
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