VA Disability Calculator (Unofficial)
Enter each service-connected disability percentage below. This tool uses standard VA math to estimate your combined rating and rounded compensation level.
Important: This calculator does not include advanced rules like bilateral factor, SMC, or special effective date scenarios. Treat results as educational estimates only.
What Is a VA Disability Calculator?
A disability calculator va tool helps veterans estimate their total combined disability rating when they have more than one service-connected condition. The VA does not simply add percentages together. Instead, it uses a “whole person” approach that starts from 100% efficient and subtracts from what remains after each condition.
For example, a 50% condition and a 30% condition do not equal 80%. Under VA math, 50% is applied first, then 30% is applied to the remaining 50% efficiency, resulting in 65% before rounding.
How VA Combined Rating Math Works
The Basic Formula
The VA combines ratings from highest to lowest. At each step:
- Start with the current combined value.
- Find remaining efficiency: 100 - current combined.
- Apply the next disability percentage to that remaining efficiency.
- Add that amount to the current combined value.
After all conditions are combined, the VA rounds to the nearest 10%. Values ending in 5 are rounded up.
Quick Example
- First rating: 60% → combined is 60%
- Second rating: 20% of remaining 40 = 8%
- Raw combined = 68%
- Rounded VA rating = 70%
How to Use the Calculator Above
- Enter one rating per condition (for example: 10, 30, 50).
- Click Add Another Rating to include all service-connected conditions.
- Click Calculate Combined Rating.
- Review raw combined value, rounded VA rating, and an estimated monthly payment.
If your claim includes bilateral conditions, special monthly compensation (SMC), dependents, or staged ratings, final VA results may differ from this estimate.
Estimated Payment Information
This page includes a simple estimated monthly compensation amount for a veteran with no dependents, using a common base-rate model. Official compensation changes over time due to COLA adjustments and policy updates, so always verify with current VA publications or a VSO representative.
Common Mistakes Veterans Make
- Adding percentages directly: VA math is multiplicative, not simple addition.
- Forgetting rounding: A raw 84% generally rounds to 80%, while 85% rounds to 90%.
- Ignoring secondary conditions: Secondary service connection can significantly affect your combined rating.
- Skipping documentation: Strong medical evidence and nexus support are crucial for favorable decisions.
Final Thoughts
A good VA rating calculator can help you plan, set realistic expectations, and prepare for conversations with accredited representatives. Use this tool as a fast estimate, then confirm details through official VA resources and qualified claims assistance.