The VA combined rating is not addition. This surprises nearly every veteran who encounters it for the first time. If you have a 50% rating and add a 30% rating, your combined rating is not 80%. It is 65% — and after rounding, it becomes either 60% or 70%. The math behind this is called the Whole Person Method, and understanding it before you file means you can calculate your own combined rating accurately and plan your claims strategy intelligently.

How VA Combined Rating Math Works

The VA does not add disability percentages. Instead, it applies each rating to the veteran’s remaining “whole person” after the previous rating has been subtracted. Here is the step-by-step process:

Start with 100% (a whole, non-disabled person). Apply your highest disability rating first. A 50% rating means the veteran is 50% disabled and 50% remains. Apply the next rating — say 30% — to that remaining 50%, not to the original 100%. 30% of 50% equals 15%. Add 15% to the first 50%: combined disability is now 65%. The remaining whole person is 35%.

Continue this process for each additional rating, always applying the new percentage to whatever whole person remains. The final result is rounded to the nearest 10% — values ending in 1-4 round down, values ending in 5-9 round up.

Step-by-Step Combined Rating Example

Conditions rated: PTSD 50%, tinnitus 10%, knee 10%, back 20%

Step 1: Start with whole person = 100. Apply 50% (PTSD): 50% of 100 = 50. Remaining: 50.

Step 2: Apply 20% (back): 20% of 50 = 10. Running total: 60. Remaining: 40.

Step 3: Apply 10% (knee): 10% of 40 = 4. Running total: 64. Remaining: 36.

Step 4: Apply 10% (tinnitus): 10% of 36 = 3.6. Running total: 67.6. Round to nearest 10: 70%.

Final combined rating: 70%. The veteran with four conditions has a combined rating of 70%, not 90%.

2026 VA Monthly Pay at Every Rating

The following are the 2026 VA disability compensation rates for a veteran with no dependents after the annual COLA adjustment:

10%: $175.51 per month
20%: $346.95
30%: $537.42
40%: $774.16
50%: $1,102.04
60%: $1,395.93
70%: $1,759.19
80%: $2,044.89
90%: $2,297.96
100%: $3,831.30

Dependents increase these amounts. A veteran rated 30% or higher with a spouse receives an additional $67 to $200+ per month depending on rating and dependent type. An accredited VSO can help you calculate your specific monthly payment including all applicable dependent rates.

The Bilateral Factor: The Math Bonus Most Veterans Miss

If you have service-connected disabilities affecting both sides of the body — both knees, both ears, both arms — the VA applies a bilateral factor that increases your combined rating slightly before the final calculation. The bilateral factor adds 10% of the combined value of the bilateral conditions to the subtotal before continuing the whole person calculation. This can mean the difference between rounding down to 60% and rounding up to 70%.

Why Your Rating Might Be Lower Than Your Math Says

The most common reason veterans’ combined ratings are lower than expected is that conditions were rated too low individually. A knee condition rated 10% when it should be 20% affects not just that one rating — it affects the entire combined rating calculation. Getting the individual ratings right matters as much as understanding the math.

Individual ratings are determined by the VA’s rating schedule (38 CFR Part 4), which assigns percentages based on documented symptoms and functional limitations. Your C&P examiner’s findings are the primary driver. Understanding what the rating criteria require — and documenting your symptoms accordingly — is the difference between a 10% and 20% knee rating, which compounds into your overall combined rating.

How to Get to 100%

Reaching 100% through the schedular method — individual ratings that combine to 95% or higher — requires a substantial number of conditions at meaningful rating levels. Many veterans reach 100% through TDIU (Total Disability Individual Unemployability) instead, which pays at the 100% rate when service-connected conditions prevent substantially gainful employment, even if the combined rating is 70% or lower.

A free, accredited VSO can help you model different rating scenarios and identify the most realistic path to maximum benefit — whether that is through increasing existing ratings, adding secondary conditions, or pursuing TDIU eligibility. This strategic planning is a core VSO service provided at no cost.

Frequently Asked Questions

How does the VA calculate a combined disability rating?
The VA uses the Whole Person Method: each rating is applied to the remaining non-disabled percentage, not added directly. The final result is rounded to the nearest 10%.

If I have a 50% and a 50% rating, what is my combined rating?
75% — which rounds to 80%. The second 50% is applied to the remaining 50% whole person (50% of 50% = 25%), giving a combined disability of 75%, rounded to 80%.

What is the VA disability rate for 100% in 2026?
For a veteran with no dependents, the 2026 rate is $3,831.30 per month. With a spouse and no children, the rate increases. An accredited VSO can calculate your specific payment including all dependents.

Can my combined rating ever reach 100% through the Whole Person Method?
Mathematically, the Whole Person Method can never reach exactly 100% through addition alone, since each rating is applied to an ever-smaller remainder. Veterans reach 100% schedular through ratings that combine to 95%+ (which rounds to 100%) or through TDIU.