VA Disability Calculator
Estimate Your Combined VA Disability Rating
VA does not simply add disability percentages together. This calculator helps veterans estimate a combined rating using VA math and an optional bilateral factor estimate.
New to combined ratings? Read our disability ratings explained guide (VA math) before you interpret results.
Quick Answer
VA disability ratings are combined using remaining efficiency, not simple addition.
A 50% rating and a 30% rating do not equal 80%. VA first considers the veteran 50% disabled and 50% efficient, then applies the next rating against the remaining 50% efficiency. The result is rounded to the nearest 10% for the combined rating.
VA Math Tool
VA Disability Rating Calculator
Enter each VA disability percentage, mark whether it affects a paired arm or leg for bilateral factor purposes, and add dependents to estimate monthly VA compensation.
Step 1: Enter Your Disability Ratings
You do not need to enter condition names. Add one row for each rated disability. For bilateral factor estimates, select left or right upper extremity for arms, shoulders, hands, elbows, or wrists. Select left or right lower extremity for hips, knees, ankles, feet, or legs.
Step 2: Add Dependents
VA only adds dependent compensation when the combined rating is 30% or higher. Dependents do not increase payment at 10% or 20%.
Raw combined value
0%
Before rounding to nearest 10%
Estimated VA rating
0%
Rounded VA combined rating
Estimated monthly amount
$0.00
2026 VA compensation estimate
Not at 100% yet?
Your combined rating may not tell the full story.
If your rating is lower than expected, the issue may be missing evidence, underrated conditions, overlooked secondary service connection, or documentation that does not clearly explain medical relationships. Educational consulting can help you think through documentation gaps — not legal representation or VA claims representation.
How VA Math Works
VA ratings are combined by applying each disability percentage against the veteran’s remaining efficiency. That is why a 50% rating and a 30% rating do not equal 80%.
If both paired upper extremities or both paired lower extremities have compensable service-connected disabilities, the bilateral factor may apply before VA combines those ratings with the remaining conditions.
38 CFR and VA Combined Ratings Authority
VA combined ratings are based on the combined ratings table and principles found in 38 CFR § 4.25. The bilateral factor is addressed separately under 38 CFR § 4.26 when qualifying paired extremity disabilities are involved.
In plain English, VA starts with the highest disability rating, then applies the next disability rating to the portion of the body VA still considers efficient. After all ratings are combined, the result is converted to the nearest degree divisible by 10.
This calculator is an educational estimate. VA’s official combined rating can depend on the exact disabilities, bilateral factor treatment, effective dates, dependency status, and how VA codes each condition.
Expert Insight
The calculator tells you the number. Your evidence explains why that number should be higher.
Many veterans focus only on the combined rating percentage. But the real strategy is understanding whether each individual condition has been properly rated, whether secondary conditions were missed, and whether the medical evidence supports the next higher rating level.
If your estimated rating is lower than expected, the answer may not be “VA math.” The issue may be missing diagnoses, weak nexus evidence, incomplete lay statements, or conditions that were never claimed.
Decision Framework: What to Do After You Estimate Your Rating
1. Compare the estimate to your current VA rating
If the numbers are close, your combined rating may be accurate. If there is a major difference, review whether bilateral factor, rounding, or missing conditions may explain the gap.
2. Review each condition individually
A combined rating can hide underrated conditions. Look at each diagnostic code and ask whether the medical evidence supports the assigned percentage.
3. Look for secondary conditions
Chronic pain, mental health symptoms, medication side effects, sleep impairment, migraines, GERD, IBS, and orthopedic conditions may create secondary claim pathways.
4. Identify evidence gaps before filing
Before filing for an increase or secondary condition, review whether you have a current diagnosis, treatment records, lay evidence, and nexus support where needed.
Common Mistakes When Estimating a VA Rating
Adding ratings normally
VA math does not add percentages like regular arithmetic. Ratings are combined using remaining efficiency.
Forgetting the bilateral factor
Paired upper or lower extremity disabilities may change the combined result before other ratings are added.
Assuming 95% is impossible to reach
VA rounds combined values to the nearest 10%. A combined value of 95 rounds to 100%.
Ignoring dependents and compensation differences
Compensation amounts can change based on rating percentage and qualifying dependents.
Denial vs stronger documentation package
Frequently Asked Questions
Does VA add disability ratings together?
No. VA uses combined ratings math. Each percentage is applied against the veteran’s remaining efficiency.
What rating rounds to 100%?
Under VA rounding, a combined value of 95% or higher generally rounds to 100%.
Does the bilateral factor always apply?
No. It generally applies only when qualifying compensable service-connected disabilities affect paired upper extremities, paired lower extremities, or paired skeletal muscles.
Can this calculator replace VA’s official decision?
No. This tool is for educational estimates only. VA’s official rating depends on the full claim record, diagnostic codes, effective dates, and VA adjudication.