VA Combined Ratings: How the Math Works
VA combined ratings account for each disability in sequence rather than adding individual percentages together. A 50% rating and a 30% rating, for example, produce a combined value of 65%, which rounds to 70%.
That difference can affect your monthly compensation and eligibility for other benefits. The calculation starts with VA’s concept of remaining efficiency.
Key Takeaways
- VA generally combines your highest rating with the next highest, then continues through the remaining ratings.
- The final combined value is rounded to the nearest 10%. Values ending in 5 round up.
- Qualifying disabilities affecting paired limbs may receive a bilateral factor before VA combines them with other ratings.
- A correct calculation can still produce an incorrect award if VA assigned the wrong individual rating or omitted a condition.
- Total disability based on individual unemployability can provide payment at the 100% rate for eligible veterans whose service-connected conditions prevent substantially gainful employment.
Why VA Ratings Don’t Add Up Normally
VA starts with a person considered 100% efficient for rating purposes. Each service-connected disability reduces the efficiency remaining after the preceding disability. The resulting number is a rating calculation, not a medical measurement of your ability to function or work.
Suppose VA assigns a 50% rating for one condition. Under this method, 50% efficiency remains. A second disability rated at 30% applies to that remaining 50%, producing another 15 percentage points.
The combined value is 65%, which rounds to 70% when those are the only ratings. Ordinary addition would produce 80%, but VA’s rules use the Combined Ratings Table in 38 C.F.R. Section 4.25.
This method also explains why a new rating doesn’t always increase the final number on your award. The additional disability affects the remaining efficiency, and the new combined value may still round to the same percentage.
How VA Combines Multiple Disability Ratings
For most calculations, list your individual service-connected ratings in descending order. VA combines the two highest first, then uses that result with the next rating. Continue until every applicable rating has been included.
Combine the Highest Ratings First
Consider ratings of 50%, 30%, and 20%, with no bilateral factor. Combining 50% and 30% gives 65%. The remaining efficiency is 35%, and 20% of 35 is 7. Adding those 7 points to 65 gives a combined value of 72%.
VA rounds that final value to 70%. Although the individual ratings total 100% under ordinary addition, the combined rating is 70%.
You can also use the Combined Ratings Table. Find the higher number in the left column and the lower number across the top, then read the value where they meet. Carry that result into the next combination.
Round at the End
The table uses whole-number intermediate values. If you calculate the steps yourself and produce a decimal, use the corresponding whole-number table value before the next combination. Don’t round an intermediate value to the nearest 10%.
Once all ratings are combined, VA converts the result to the nearest 10%. A final value of 64% becomes 60%, while 65% becomes 70%. Rounding too early can change the result when a veteran has several rated conditions.
The bilateral factor has its own sequence, so calculate qualifying paired disabilities before combining that subtotal with other ratings.
Examples of VA Combined Ratings
The examples below assume the listed disabilities are the only ratings and that the bilateral factor doesn’t apply.
| Individual ratings | Combined value | Final rating |
|---|---|---|
| 30% and 20% | 44% | 40% |
| 40% and 10% | 46% | 50% |
| 50% and 30% | 65% | 70% |
| 50% and 50% | 75% | 80% |
The first example often surprises veterans: a 20% rating added to a 30% rating produces a final 40% award. The second disability applies to the 70% efficiency remaining, adding 14 points rather than 20.
By contrast, two 50% ratings combine to 75%. Because that value ends in 5, it rounds up to 80%.
How the Bilateral Factor Works
The bilateral factor recognizes the effect of qualifying disabilities involving paired extremities or paired skeletal muscles. VA combines those disabilities first, then adds 10% of their combined value. That subtotal is used with any other ratings before final rounding.
Which Disabilities May Qualify?
Compensable disabilities affecting both arms or both legs can qualify. For example, separately rated disabilities of the right and left knees generally bring the bilateral rule into the calculation.
Each side must have a compensable disability for the factor to apply. A 0% rating on one side alone doesn’t satisfy that requirement. The bilateral factor regulation also addresses paired skeletal muscles and exceptions to its application.
The disabilities on each side don’t have to be identical. What matters is whether the ratings meet the rule for qualifying paired disabilities.
A Right-Leg and Left-Leg Example
Suppose VA rates a right-leg disability at 20% and a left-leg disability at 10%. The table combines those ratings to 28%. VA then calculates 10% of 28, which is 2.8, and adds it to the subtotal.
The bilateral subtotal is 30.8, carried as 31 for further combination. If there are no other ratings, the final award rounds to 30%.
The factor adds 10% of the bilateral value. It doesn’t automatically add 10 percentage points to the final combined rating. In some cases, it may not change the rounded award at all.
Why a New Rating May Not Raise Your Award
A new compensable rating increases the combined value, but it doesn’t always move that value across the next rounding threshold. The effect depends on every rating already in the calculation, as well as any applicable bilateral factor.
This distinction matters when you’re deciding whether VA accounted for a newly service-connected condition. The condition may appear in the decision even though the final combined percentage stays the same. Conversely, a missing or incorrect individual evaluation can affect the result.
A 0% Rating Still Establishes Service Connection
A 0% rating doesn’t increase the combined percentage. It does, however, establish that VA recognizes the condition as service connected.
If the condition worsens, evidence of its severity may support a claim for an increased rating. A condition rated at 0% can also form the basis for a secondary service-connection claim when evidence establishes that it caused or aggravated another disability.
Separate Ratings Require Distinct Impairment
VA generally cannot compensate the same manifestation twice under different diagnostic codes. Having two diagnoses doesn’t automatically produce two separate ratings.
Separate evaluations may be appropriate when the evidence identifies distinct impairments. For example, our discussion of traumatic brain injury ratings addresses the potential overlap between TBI residuals and mental health symptoms. The medical record needs to make clear which limitations each evaluation addresses.
What Your Combined Rating Means for Pay
VA generally uses the final combined rating to determine the applicable disability compensation rate. Compensation doesn’t equal the sum of separate payments for each individual percentage.
The amount can also depend on whether VA recognizes eligible dependents. At a combined rating of 30% or higher, additional compensation may be available for a qualifying spouse or child. The threshold applies to the combined rating, so no single condition needs a 30% evaluation.
Our guide to adding a spouse or child to VA compensation explains the dependency claim. VA also publishes its disability compensation rate tables, including rates based on family status.
The effective date matters too. A higher rating can affect past-due compensation, but the period payable depends on the claim and decision history.
When a Veteran May Receive Pay at the 100% Rate
A veteran doesn’t always need a combined 100% rating to receive compensation at the 100% rate. Total disability based on individual unemployability, known as TDIU, may apply when service-connected disabilities prevent substantially gainful employment.
The usual schedular thresholds are one disability rated at least 60%, or a combined rating of at least 70% with one disability rated at least 40%. VA rules allow certain disabilities to count as one disability for threshold purposes.
Meeting a percentage threshold alone doesn’t establish entitlement. Evidence must also address the effect of service-connected conditions on employment. Medical findings, attendance records, job history, and employer statements may help show those limitations.
Veterans below the usual thresholds may still seek extraschedular consideration. The question remains whether service-connected disabilities prevent substantially gainful employment.
What to Do If Your Rating Looks Wrong
Start with the rating decision and its “Reasons for Decision.” Identify whether the problem is the calculation, an individual percentage, a denied condition, or an effective date. Each issue calls for a different response.
Identify the Error and Supporting Evidence
If the math appears wrong, list each service-connected condition and its assigned percentage. Then calculate the ratings in order, accounting for any qualifying bilateral disabilities.
If an individual rating is too low, compare the decision with the applicable criteria and the evidence VA considered. Treatment notes and examination findings may document symptoms or functional limits that the decision missed. For a denied secondary condition, the central issue may instead be medical evidence linking it to an existing service-connected disability.
An effective-date dispute requires attention to the filing history. Our guidance on VA intent-to-file rules and effective dates explains how filing dates can affect a claim.
Choose a Review Option
A Supplemental Claim generally requires new and relevant evidence. Higher-Level Review considers the existing record without new evidence. A Board Appeal sends the dispute to the Board of Veterans’ Appeals, with different options for submitting evidence or requesting a hearing.
A review request filed within one year of the decision generally matters for preserving continuous pursuit and a potential earlier effective date. Keep the decision notice and proof of every submission.
Frequently Asked Questions
Can VA Combined Ratings Reach 100%?
Yes. A combined value of 95% or higher rounds to 100%. An individual disability can also receive a 100% rating under its applicable criteria.
Can I Work With a VA Disability Rating?
A VA disability rating below 100% doesn’t by itself prevent you from working. TDIU has a separate employment standard because it concerns whether service-connected disabilities prevent substantially gainful employment.
Does a 0% Rating Count in VA Math?
A 0% evaluation doesn’t add to the combined value. It still establishes service connection, which can matter if the condition later worsens or supports a secondary claim.
Get the Calculation and the Underlying Ratings Right
VA combined ratings depend on both the math and the individual evaluations entered into it. A correct table calculation won’t fix an overlooked condition or an evaluation that doesn’t account for documented impairment.
If your decision doesn’t match the evidence, identify the issue and act within the applicable review period. At Avard Law Offices, we offer free consultations for Florida veterans seeking help with benefits disputes.