VA Disability Rating Calculator
Estimate a combined VA disability rating from up to 10 individual ratings. Enter each rating and check bilateral only for ratings that qualify as part of a group affecting both arms or both legs.
Combine Disability Ratings Using VA Math
VA Disability Rating Formula
Where:
- \(C\) — combined value before adding the next rating, expressed as a percentage
- \(r\) — the next individual rating, expressed as a percentage
- \(C_{\mathrm{bilateral}}\) — value after combining the selected bilateral ratings
- \(B\) — bilateral group value after adding 10%, capped at 100%
- \(C_{\mathrm{final}}\) — value after combining the bilateral group with any other ratings
- \(R\) — estimated combined rating rounded to the nearest 10%
Each rating applies to the efficiency remaining after earlier ratings, rather than being added directly. This calculator combines qualifying bilateral ratings first, adds the bilateral factor, then combines that group with other ratings.
VA Disability Rating – Calculation Example
Example: use the default selections: Disability 1 is 40% and Disability 2 is 30%, both checked as bilateral; Disability 3 is 20% and is not checked. Disabilities 4–10 are set to Not used.
\[ C_{\mathrm{bilateral}}=40+(100-40)\frac{30}{100}=58\% \]
\[ B=58+0.10(58)=63.8\% \]
\[ C_{\mathrm{final}}=63.8+(100-63.8)\frac{20}{100}=71.04\% \]
\[ R=10\left\lfloor\frac{71.04+5}{10}\right\rfloor=70\% \]
Result: the combined value before rounding is 71.04%; the estimated combined rating rounded to the nearest 10% is 70%.
How to use the calculator
- Choose an individual percentage under Disability 1 rating, then use Disability 2 rating through Disability 10 rating for any additional ratings. Select Not used for empty slots. A 0% rating is a selected rating, not an empty slot.
- Check Disability 1: bilateral or the corresponding bilateral checkbox for each rating that qualifies as part of a group affecting both arms or both legs. Leave the box unchecked for other ratings.
- Review Combined value before rounding and Combined rating rounded to nearest 10. Open Calculation steps to see how much each rating or factor adds.
- If the calculator reports an error, check for a bilateral box on a Not used slot or only one rating marked bilateral. The bilateral group requires at least two selected ratings.
What a combined VA disability rating means
Individual disability ratings are not simply summed. Under the remaining-efficiency approach, a 30% rating added after a 40% rating applies to the 60% not already accounted for. It adds 18 percentage points, producing 58%, not 70%. Each later rating works against the smaller amount remaining, so the combined value cannot exceed 100%.
The bilateral factor addresses qualifying disabilities involving paired extremities. In this calculator, checked ratings are combined with one another first. An amount equal to 10% of that combined group value is then added to the group before it is combined with non-bilateral ratings. For example, a bilateral group value of 58% becomes 63.8%, an increase of 5.8 percentage points—not an additional 10 percentage points.
The two headline results serve different purposes. Combined value before rounding shows the calculator’s unrounded percentage after all selected ratings are processed. Combined rating rounded to nearest 10 shows the estimated final rating in 10% increments. The calculation-steps table shows the value before each addition, the amount added, and the value afterward, making it easier to spot an incorrect selection.
Assumptions and limitations
Use individual ratings that apply to your case; this calculator does not decide whether a condition is service-connected or qualifies for the bilateral factor. Do not check bilateral merely because two conditions are present. The checkbox is for ratings that qualify as part of a group affecting both sides of paired arms or paired legs. If you are unsure which ratings qualify, verify them against your VA decision or seek qualified assistance.
The calculator sorts ratings from highest to lowest within the bilateral group and again when combining that group with other ratings. It retains decimal values between steps, caps the bilateral group at 100%, and rounds the final value to the nearest 10%, with values ending in 5 rounded upward. These choices describe this calculator’s estimate; official VA calculations use the applicable combined ratings table and VA rules, so an official result may differ, particularly near a rounding threshold.
A 100% individual rating makes the combined value 100% regardless of later ratings in this calculation. A 0% rating can be entered, but it adds nothing to the combined value. Leave unused entries set to Not used and their bilateral boxes unchecked. The result is a rating estimate, not a benefits-payment amount or an official VA determination.
Frequently Asked Questions
Is there a shortcut for calculating a combined VA rating by hand?
Yes, when no bilateral factor applies, multiply the efficiency left after each rating: \(C=100[1-(1-r_1/100)(1-r_2/100)\cdots]\). For ratings of 50%, 20%, and 10%, the remaining efficiency is \(0.50\times0.80\times0.90=0.36\), so the combined value is 64%. That gives an estimated rating of 60% after rounding. This shortcut does not account for the bilateral factor or differences in the official VA table.
What is a good or normal VA disability rating?
There is no normal or universally good rating. A rating reflects the severity of service-connected conditions under VA rules, not how your result compares with other veterans. A higher combined rating may affect compensation, but the appropriate rating is the one supported by your medical evidence and VA decision. If a decision appears incorrect, review its stated reasons and consider getting qualified assistance.
Can I have a 100% combined rating without any single condition rated at 100%?
Yes. For example, a 90% rating combined with a 50% rating produces 95%, which rounds to an estimated combined rating of 100%. A 100% combined rating does not, by itself, mean the VA considers the disability permanent and total. Those are separate determinations; check your VA decision for the status that applies to you.
Does one arm condition and one leg condition qualify for the bilateral factor?
Not simply because the conditions affect different limbs. The bilateral factor generally concerns qualifying disabilities affecting both arms, both legs, or paired skeletal muscles under VA rules. A left-arm rating and a right-leg rating alone do not establish a qualifying pair. Whether particular conditions qualify can depend on how the VA has evaluated them, so check your decision or ask an accredited representative.
Is a 0% VA rating the same as having no service-connected disability?
No. A 0% rating can mean the VA recognizes a condition as service-connected but rates it as noncompensable at its current severity. That distinction may matter for other benefits or a future increased-rating claim. An unused calculator slot represents no rating entered; a 0% entry represents an actual rating that does not increase the combined percentage.
Why might my VA decision show a different combined rating from a calculator?
The VA applies its official combined ratings table and the rules relevant to your specific disabilities. A calculator that retains decimals between steps may differ near a rounding cutoff, and an incorrectly included or omitted bilateral factor can also change the result. Compare the individual ratings, effective dates, and bilateral treatment in your decision before assuming there is a calculation error.
Can I convert my combined VA rating directly into a monthly payment?
No. A percentage alone is not a dollar amount. VA compensation depends on the applicable rate table and may also depend on factors such as eligible dependents, special monthly compensation, and effective dates. Use your official rating and the VA’s current compensation rates for an estimate; your VA award letter is the source for the payment awarded in your case.