Calculate your combined VA disability rating using official VA math. The VA doesn't simply add percentages—they use a specific formula that accounts for diminishing effectiveness. This calculator does the math for you.
Add your VA disability conditions and select their individual ratings
Do you have disabilities affecting both arms, both legs, or paired skeletal muscles?
Additional compensation for spouse, children, and dependent parents (30%+ rating only)
Ask our AI advisor for help understanding your disability rating or filing your claim.
The VA doesn't simply add your individual ratings together. Instead, they use a unique formula based on "efficiency." Each condition is calculated against your remaining efficiency (100% - current rating).
Example: If you have 50% PTSD + 30% back pain + 10% tinnitus:
Start with 50% → Add 30% of remaining 50% = 15% → 50 + 15 = 65%
Then add 10% of remaining 35% = 3.5% → 65 + 3.5 = 68.5%
Final rating rounds to 70% (VA rounds .5 and above up to nearest 10)
