This is the number one thing that confuses veterans. You have a 60% rating and a 40% rating. You expect 100%. VA says you’re 76%. You think they’re wrong. They’re not — but the way they do the math feels designed to confuse you, and it is worth understanding clearly.
The “whole person” method
VA does not add percentages together. They apply each rating to your remaining “whole person.” Here’s how it works step by step:
- Start with 100% (the whole person)
- Apply your highest rating first: 60% disability means 60% of you is disabled. 40% of you remains.
- Apply your second rating to what’s left: 40% of the remaining 40% = 16% more disabled.
- 60% + 16% = 76% combined.
- VA rounds to the nearest 10%, so 76% rounds to 80%.
That’s it. It’s not fraud. It’s their methodology — and it means no matter how many conditions you stack, you can never mathematically reach 100% through combined ratings alone (unless one single rating is 100%).
Why this matters for your strategy
If your goal is 100% compensation, combined ratings may not get you there. The two practical paths to 100% pay are: (1) getting a single condition rated at 100%, or (2) qualifying for TDIU — Total Disability based on Individual Unemployability — which pays at the 100% rate even when your combined rating is lower. Most veterans who are unable to work should be pursuing TDIU, not trying to stack enough secondary conditions to arithmetically reach 100%.
Bilateral factor: the one time VA math works for you
There is one exception where VA math gives you extra credit. If you have disabilities on both sides of your body — both knees, both shoulders, both ankles — the bilateral factor adds an extra 10% of the combined value of those bilateral disabilities before calculating the rest. This is one of the legitimate “add-ons” that many veterans don’t know about. If your bilateral disabilities are rated individually, make sure your rating decision is applying the bilateral factor correctly.
Rounding: the final step that matters
After the whole-person calculation, VA rounds to the nearest 10%. Values ending in 1–4 round down; 5–9 round up. If your combined calculation comes out to 55%, you round to 60%. If it’s 54%, you round to 50%. A single additional secondary condition that pushes you from 54% to 55% can mean a full rating tier increase and $200+ more per month. Secondary conditions are worth claiming.