The VA does not add disability ratings together the way most people expect. A 50% rating plus a 30% rating does not equal 80%. Instead, the VA uses a formula called the "whole person method," which applies each new rating to the remaining healthy percentage of you, not your full baseline. Understanding this math matters because it directly determines your monthly tax-free payment, which ranges from $180.42 at 10% to $3,938.57 at 100% for veterans with no dependents in 2026.
This guide explains how the combined rating calculation works step by step, walks through real examples, covers the bilateral factor and TDIU, and provides the current 2026 compensation rates so you can estimate your payment.
How the VA Combined Rating Calculation Works
The VA applies what it calls the "whole person theory." The logic is that you start as a 100% healthy person. Your first disability reduces that remaining health. The next disability is then applied not to 100% but to whatever healthy percentage you still have. This prevents your total rating from exceeding 100% through simple addition.
Step-by-Step Process
- List all your disabilities from highest rating to lowest.
- Apply the highest rating to 100% to find your remaining efficiency.
- Apply the next rating to that remaining efficiency.
- Subtract the result from the remaining efficiency to get a new remaining efficiency.
- Repeat for every additional disability.
- Subtract your final remaining efficiency from 100% to get your combined (decimal) value.
- Round the final combined value to the nearest 10%.
The rounding rule: values ending in 1 through 4 round down, values ending in 5 through 9 round up. A combined value of 64% rounds to 60%; a combined value of 65% rounds to 70%. Rounding happens only at the very end, never during intermediate steps.
VA Math Examples
Two Disabilities: 50% and 30%
| Step | Calculation | Result |
|---|
| Start with | Whole person | 100% efficient |
| Apply 50% PTSD | 100% x 50% = 50% | 50% efficient remaining |
| Apply 30% back | 50% x 30% = 15% | Subtract 15% from 50% = 35% remaining |
| Combined value | 100% - 35% | 65% |
| Round to nearest 10% | 65% rounds up | 70% final rating |
This veteran receives the 70% monthly rate, not 80%. The extra 10% from simple addition does not exist in VA math.
Three Disabilities: 60%, 40%, and 20%
| Step | Calculation | Result |
|---|
| Apply 60% first | 100% x 60% = 60% | 40% remaining |
| Apply 40% to remainder | 40% x 40% = 16% | 40% - 16% = 24% remaining |
| Apply 20% to remainder | 24% x 20% = 4.8% | 24% - 4.8% = 19.2% remaining |
| Combined value | 100% - 19.2% | 80.8% |
| Round to nearest 10% | 80.8% rounds up | 80% final rating |
Three Disabilities: 50%, 30%, and 10%
| Step | Calculation | Result |
|---|
| Apply 50% | 100% x 50% = 50% | 50% remaining |
| Apply 30% to remainder | 50% x 30% = 15% | 50% - 15% = 35% remaining |
| Apply 10% to remainder | 35% x 10% = 3.5% | 35% - 3.5% = 31.5% remaining |
| Combined value | 100% - 31.5% | 68.5% |
| Round to nearest 10% | 68.5% rounds up | 70% final rating |
The Bilateral Factor
If you have service-connected disabilities in both arms, both legs, or any paired skeletal muscles, the VA applies a bilateral factor under 38 CFR section 4.26. This adds 10% of your bilateral combined value before continuing to combine with any remaining single-limb disabilities.
Bilateral Factor Example: 20% Right Knee and 20% Left Knee
- Combine the two bilateral disabilities: 20% right knee + 20% left knee using VA math.
- 100% - (80% x 80%) = 100% - 64% = 36% combined bilateral value
- Apply the bilateral factor: 36% x 10% = 3.6%. Add this to 36%: 36% + 3.6% = 39.6%
- Round to nearest 10%: 39.6% rounds to 40% final rating
Without the bilateral factor, this veteran would have rounded to 40% anyway in this case, but when ratings are higher the bilateral factor can push a veteran across a rounding threshold to the next tier.
The bilateral factor is not applicable unless both paired extremities have compensable (at least 10%) ratings.
2026 VA Disability Compensation Rates
The VA applied a 2.8% cost-of-living adjustment (COLA) effective December 1, 2025, confirmed by the Social Security Administration on October 24, 2025. These rates apply through December 2026.
Monthly Rates for Veterans with No Dependents
| Combined Rating | Monthly Payment (2026) |
|---|
| 10% | $180.42 |
| 20% | $356.76 |
| 30% | $553.62 |
| 40% | $795.84 |
| 50% | $1,132.90 |
| 60% | $1,435.01 |
| 70% | $1,808.44 |
| 80% | $2,102.14 |
| 90% | $2,362.30 |
| 100% | $3,938.57 |
All payments are tax-free.
Rates Increase with Dependents
At 30% or higher, additional monthly compensation is available for dependents. The VA adds amounts for a spouse, children, and dependent parents. For example, a veteran rated at 30% with a spouse and one child receives a higher base rate than a veteran with the same rating and no dependents. Veterans rated at 10% or 20% do not receive additional dependent compensation.
Visit the VA's compensation rates page at va.gov to see the full dependent rate charts.
How to Use the VA Combined Rating Table
The VA publishes a combined ratings table that veterans and claims processors use as a reference. To use it:
- Find your highest rating in the left-hand column.
- Find your next highest rating across the top row.
- The number at the intersection is the combined value for those two disabilities.
- Repeat using that intersection value as your new "left column" number, adding the next disability from the top row.
- After all disabilities are combined, round to the nearest 10%.
The table produces the same result as the manual whole person calculation. Both methods are equally valid for estimating your combined rating.
TDIU: Reaching 100% Pay Without a 100% Rating
Total Disability Individual Unemployability (TDIU) allows veterans to receive compensation at the 100% rate even when their combined schedular rating is below 100%, if their service-connected disabilities prevent them from holding substantially gainful employment.
To qualify for TDIU in 2026, a veteran must meet one of two thresholds:
- Single disability: Rated at 60% or higher
- Multiple disabilities: Combined rating of 70% or higher, with at least one disability rated at 40% or higher individually
TDIU pays the same monthly rate as a 100% schedular rating: $3,938.57 with no dependents. If awarded, this can be the most significant benefit for veterans whose combined rating stalls at, for example, 70% or 80% and who cannot work because of those conditions.
What Counts Toward Your Combined Rating
Only service-connected disabilities count toward your combined rating. Non-service-connected conditions do not factor into the VA's calculation even if they affect your ability to work.
Common service-connected conditions that veterans rate include:
- PTSD and other mental health diagnoses
- Tinnitus
- Musculoskeletal conditions (knee, back, shoulder, hip)
- Hearing loss
- Traumatic brain injury (TBI)
- Sleep apnea
- Migraines
- Diabetes (for Agent Orange exposure)
Each condition gets its own individual rating from the VA's schedule for rating disabilities (38 CFR Part 4), and all rated conditions feed into the combined calculation.
Why Your Combined Rating May Feel Lower Than Expected
Veterans often describe the math as frustrating because each additional disability contributes less to the combined rating than the one before it. A 10% rating added to an existing 90% combined value adds only 1% to your actual combined number. This is by design under the whole person theory.
For veterans approaching but stuck below 100%, TDIU is often a better path than pursuing additional small ratings or increased ratings on lower-percentage conditions.
Common Calculation Mistakes to Avoid
Mistake 1: Adding ratings directly. 40% + 30% + 20% is not 90%. This is the most common misconception veterans have when estimating their combined rating.
Mistake 2: Rounding during intermediate steps. The VA rounds only once, at the very end. If you round after each combination, your final number will often be off.
Mistake 3: Forgetting the bilateral factor. Veterans with paired extremity conditions sometimes overlook this step, which can shift the final number across a rounding threshold.
Mistake 4: Confusing the combined rating with individual ratings. The VA can rate you at 70% combined even though no single condition is rated above 40%.
Checking Your Current Rating and Filing Claims
Your current combined rating and individual ratings appear in your VA.gov account under the disability section. You can also request a copy of your rating decision letter, which lists each rated condition and the associated percentage.
If you believe your rating is incorrect or your conditions have worsened, you can file for an increase. The VA accepts:
- Supplemental claims: For new and relevant evidence
- Higher-Level Reviews: For decision-maker errors on existing evidence
- Board appeals: For contested decisions you want reviewed by a Veterans Law Judge
Free support for filing is available through Veterans Service Organizations (VSOs) such as the DAV, VFW, American Legion, and others. Accredited VSO representatives are at no cost to you.
Other Benefits You May Qualify For
VA disability ratings above 0% can unlock access to other programs and benefits:
- Veterans with 100% ratings (including TDIU) may qualify for Dependents' Educational Assistance (DEA), Chapter 35
- Veterans rated 30% or higher may receive additional compensation for dependents
- Veterans rated 10% or higher may qualify for VA health care enrollment
- Some states offer additional property tax exemptions, vehicle registration discounts, and other state-level benefits based on your VA rating
To check what other federal and state benefits your household may qualify for, use our free eligibility screener at /screener.
Frequently Asked Questions
What is VA math and why does it make ratings lower than expected?
VA math is the official term for the whole person method the VA uses to combine disability ratings. Rather than adding percentages together, each rating is applied to the remaining healthy percentage of the veteran. This means each successive disability contributes a smaller increment to the total. The method ensures combined ratings never exceed 100%, but it also means that 50% plus 30% equals 65% (rounded to 70%), not 80%.
How do I calculate my combined VA disability rating manually?
List your ratings from highest to lowest. Subtract your highest rating from 100% to find your remaining efficiency. Multiply that remaining percentage by your next rating, then subtract that product from the remaining efficiency. Repeat for each disability. Subtract your final remaining efficiency from 100% to get your combined value. Round to the nearest 10% at the end only.
Does VA math ever work in my favor?
Yes, through the bilateral factor. If you have compensable ratings in both arms, both legs, or paired skeletal muscles, the VA adds 10% of your bilateral combined value before completing the full combination. This can push your combined number across a rounding threshold.
What is the 2026 VA disability rate for 70%?
Veterans with a 70% combined rating and no dependents receive $1,808.44 per month in 2026, following the 2.8% COLA increase that took effect December 1, 2025.
Can I get 100% pay without a 100% combined rating?
Yes. Total Disability Individual Unemployability (TDIU) pays at the 100% rate ($3,938.57 per month with no dependents) if your service-connected disabilities prevent substantial gainful employment. For multiple disabilities, you need a combined rating of at least 70% with one condition rated at least 40%.
What is the highest possible combined VA disability rating?
The highest schedular combined rating is 100%. However, even if your combined value calculates to 95%, it rounds to 100%. Veterans at 100% combined receive $3,938.57 per month with no dependents. Some veterans also receive Special Monthly Compensation (SMC) at higher rates for specific severe conditions like loss of limb or need for aid and attendance.
Does having more disabilities always increase my combined rating?
Adding a service-connected disability will always increase your combined value by some amount, but the increase gets smaller with each successive disability because VA math applies each new rating to a shrinking remaining efficiency. A 10% disability added to an existing 90% combined value increases the total by only about 1%, which does not change the final rounded rating at all.
How do I check my current VA disability rating?
Log in to your account at va.gov and navigate to the disability section. Your combined rating and each individual rated condition with its percentage will appear there. You can also call the VA at 1-800-827-1000 or visit your regional VA office.
