The VA does not add disability ratings together. A 50% rating plus a 30% rating does not equal 80%. Instead, the VA uses a combined rating formula that applies each disability to your remaining healthy body percentage. Understanding VA math is essential for realistic expectations about your combined rating and compensation.
VA math starts with your highest rated disability applied to 100% of your body. If your first rating is 50%, you have 50% remaining healthy. Your second rating (say 30%) applies to that remaining 50%, not to 100%. So 30% of 50% = 15%. Combined: 50% + 15% = 65%. The VA rounds to the nearest 10%, so 65% becomes 70%. This is why adding more conditions has diminishing returns as your combined rating increases.
Veteran has three conditions: 50%, 30%, and 20%. Step 1: Start at 100%. Apply 50% = 50% disabled, 50% remaining. Step 2: Apply 30% to 50% remaining = 15%. Now 65% disabled, 35% remaining. Step 3: Apply 20% to 35% remaining = 7%. Now 72% disabled. Round to nearest 10% = 70% combined rating. Monthly pay at 70% in 2026: $1,716.28.
Understanding VA math helps you set realistic expectations and prioritize which conditions to claim. Getting a single higher rating is often more valuable than multiple small ratings. For example, increasing a 30% rating to 50% can have a bigger impact on your combined percentage than adding a new 10% condition.
Use the VA Disability Calculator to see your exact combined rating using VA math.