VA Math Explained: Combined Ratings Table & Calculator

VA Combined Rating Calculator: How VA Math Works & What You’ll Get Paid in 2026

The VA combined rating calculator uses “VA math” — a whole-person method where each disability rating is applied to your remaining efficiency, not added together. For example, 50% + 30% equals 65%, which rounds to a 70% combined rating. This combined percentage determines your monthly VA disability compensation. You can calculate yours using the VA’s Combined Ratings Table or online calculators.

Quick Facts

What Is a VA Combined Rating Calculator?

A VA combined rating calculator is a tool that determines your overall VA disability rating when you have multiple service-connected conditions. It uses the VA’s official “whole person” method — not simple addition — to combine individual ratings into one combined percentage.

The VA does not add disability percentages together. In VA math, 30% + 40% does not equal 70%. It equals 58%, which rounds to 60%. This is because the VA uses the whole person theory: each disability rating represents a percentage of your remaining “able-bodied” or “efficient” capacity.

The calculator takes each of your individual disability ratings and combines them from highest to lowest, accounting for the fact that a person cannot be more than 100% disabled. The final result is your combined VA disability rating, which determines your monthly compensation amount.

How VA Math Works: The Whole Person Method

VA math starts with the principle that every veteran begins with 100% efficiency. Each service-connected disability reduces your remaining efficiency. You do not add percentages together — you apply each rating to what remains.

Here is the step-by-step formula:

Step 1: Start with your highest disability rating. Subtract it from 100 to find your remaining efficiency.

Step 2: Take your next highest rating and apply it to your remaining efficiency (not to 100).

Step 3: Subtract that amount from your remaining efficiency.

Step 4: Continue with each additional rating in descending order.

Step 5: Round the final combined value to the nearest 10%.

Example: 50% + 30% + 10%

Result: 50% + 30% + 10% = 70% combined rating, not 90%.

This is why VA math produces lower combined ratings than simple addition. The whole person method ensures no veteran can exceed 100% disability.

The VA Combined Ratings Table

The VA Combined Ratings Table is the official reference published in 38 CFR § 4.25. It allows you to look up combined ratings without doing the math by hand. The table works by intersecting your highest rating on the left column with your next highest rating on the top row.

How to Use the Table

1. Arrange your disabilities in order from highest to lowest

2. Find your highest rating in the left column

3. Find your next highest rating in the top row

4. The intersection gives you the combined value

5. Use that combined value as your new starting point and combine with the next rating

6. Repeat until all ratings are combined

7. Round the final result to the nearest 10%

Sample Combinations from the Table

Source: 38 CFR § 4.25 Combined Ratings Table

The Bilateral Factor: An Extra 10% for Paired Limbs

The bilateral factor is an additional 10% applied when you have service-connected disabilities affecting both arms, both legs, or paired skeletal muscles. It recognizes that having both sides of a paired limb disabled creates more functional limitation than the sum of each disability alone.

How the Bilateral Factor Works

Under 38 CFR § 4.26, when you have bilateral disabilities:

1. Combine the ratings for the right and left sides as usual

2. Take 10% of that combined value

3. Add that 10% to the combined value (do not combine it)

4. Use that total as a single disability when combining with your other ratings

Example: Bilateral Knee Disabilities

A veteran has a 20% rating for the right shoulder and a 10% rating for the left elbow:

The bilateral factor increased the combined rating from 28% to 30.8%, which rounds to 30%. In some cases, this bump can push a veteran over the 70% threshold needed for TDIU eligibility.

2026 VA Disability Compensation Rates

Your combined rating determines your monthly VA disability compensation. For 2026, the 2.8% COLA increase took effect December 1, 2025, with higher amounts first appearing in January 2026 payments.

2026 Monthly Rates (Veteran Alone, No Dependents)

Source: VA.gov; 91 FR 7386

Rates with Dependents

Veterans with a combined rating of 30% or higher receive additional monthly compensation for a dependent spouse, children, or parents. Key rates for 2026:

Source: VA.gov; VA Claims Insider

TDIU: When VA Math Doesn’t Reach 100%

TDIU (Total Disability based on Individual Unemployability) allows veterans to be paid at the 100% rate even when their combined rating is below 100%. TDIU is designed for veterans who cannot maintain substantially gainful employment due to service-connected disabilities.

Schedular Requirements for TDIU

To qualify for TDIU under 38 CFR § 4.16(a), you must meet one of these rating thresholds:

• One disability rated at 60% or more, OR

• Two or more disabilities with at least one rated at 40% or more, and a combined rating of 70% or more

TDIU Payment

Veterans receiving TDIU are paid at the 100% rate: $3,938.58 per month for a veteran alone in 2026. TDIU can also carry a Permanent and Total (P&T) designation, which unlocks additional benefits including CHAMPVA, Chapter 35 education benefits, and state property tax exemptions.

How to Use an Online VA Combined Rating Calculator

Online VA combined rating calculators automate the VA math process. They apply the official whole-person formula, account for the bilateral factor, and show your estimated monthly compensation based on current rates.

What a Good Calculator Includes

A reliable VA combined rating calculator should:

• Use the official VA formula from 38 CFR § 4.25 and § 4.26

• Automatically detect and apply the bilateral factor for paired extremities

• Round at each step the way the VA does

• Display 2026 compensation rates (effective December 1, 2025)

• Allow you to enter dependent information for accurate estimates

• Show a step-by-step breakdown of the calculation

Free VA Rating Calculators

Several free online tools are available:

• VA.gov disability rating calculator — The official VA tool for viewing your combined rating

• VetCalc.org — Printable worksheets and online calculator using 38 CFR § 4.25

• Woods Law VA Disability Calculator — Uses official VA rates and whole-person method

• VA Math Machine (GitHub) — Free, browser-based calculator that handles bilateral factors and whole person rules

Special Monthly Compensation (SMC)

Special Monthly Compensation (SMC) is a higher tier of tax-free monthly pay for veterans whose disabilities cause specific, serious losses — such as needing help with daily activities, being housebound, or losing the use of a limb.

SMC is paid in addition to your basic disability compensation rate. Every SMC level sits above the standard 100% rate of $3,938.58 per month.

Selected 2026 SMC Rates (Veteran Alone)

Effective December 1, 2025

Dependency and Indemnity Compensation (DIC)

DIC is a tax-free monthly benefit paid to surviving spouses, dependent children, and dependent parents of veterans whose death was caused by or related to military service.

For 2026, the basic DIC rate for a surviving spouse is $1,699.36 per month. Added amounts are available for dependent children and parents based on individual circumstances.

Common Mistakes When Calculating Your Combined Rating

1. Adding ratings together. VA math is not simple addition. 50% + 30% equals 65%, not 80%. Always use the Combined Ratings Table or an official calculator.

2. Forgetting the bilateral factor. If you have disabilities affecting both arms or both legs, you may be entitled to an extra 10%. Many veterans miss this additional compensation.

3. Not rounding correctly. The VA rounds the final combined value to the nearest 10%. A combined value of 44% rounds down to 40%, not up to 50%.

4. Assuming dependents add at all ratings. Only veterans with a combined rating of 30% or higher receive additional compensation for dependents. A 10% or 20% rating does not increase with dependents.

5. Using outdated rate tables. The 2026 rates reflect a 2.8% COLA increase. Using 2025 rates will give you an inaccurate estimate.

6. Confusing combined rating with TDIU. TDIU pays at the 100% rate even when your combined rating is below 100%. If you cannot work due to service-connected disabilities, explore TDIU eligibility.

7. Ignoring the order of ratings. Always combine from highest to lowest. Changing the order does not change the final result, but the VA’s official process uses descending order.

How to Verify Your Combined Rating

You can view your official combined VA disability rating online through VA.gov. Sign in with your Login.gov, ID.me, DS Logon, or My HealtheVet account to see your combined rating and a list of your individual service-connected disabilities.

If you do not have an account, you can call the VA benefits hotline at 1-800-827-1000 (Monday–Friday, 8:00 a.m. to 9:00 p.m. ET).

Common Questions

How does VA math work for combined ratings?

VA math uses the whole person theory. Each disability rating is applied to your remaining efficiency, not added together. For example, 50% + 30% = 65%, rounded to 70%. The formula ensures total disability never exceeds 100%. The official method is published in 38 CFR § 4.25.

What is the VA combined ratings table?

The VA Combined Ratings Table is the official reference in 38 CFR § 4.25 for calculating combined ratings. You find your highest rating in the left column and your next rating in the top row. The intersection gives the combined value. Continue combining in descending order, then round to the nearest 10%.

How do I calculate my VA combined rating?

Arrange your ratings from highest to lowest. Start with your highest rating and subtract it from 100. Apply the next rating to your remaining efficiency. Continue until all ratings are combined. Round the final result to the nearest 10%. Or use the VA’s Combined Ratings Table or an online calculator.

What is the bilateral factor in VA disability?

The bilateral factor is an extra 10% added when you have service-connected disabilities affecting both arms, both legs, or paired skeletal muscles. Under 38 CFR § 4.26, you combine the bilateral ratings, take 10% of that value, and add it before combining with other disabilities.

Does 50% + 30% equal 80% in VA math?

No. In VA math, 50% + 30% equals 65%, which rounds to 70%. VA math uses the whole person theory, where each rating applies to your remaining efficiency. This is why combined ratings are lower than the sum of individual ratings.

How do I get a 100% VA rating with multiple disabilities?

You can reach a 100% combined rating through schedular ratings or TDIU. With multiple disabilities, you need combined ratings that total 100% under VA math. Alternatively, TDIU pays at the 100% rate if you have one disability rated 60% or more, or two or more with one at 40% or more and a combined rating of 70% or more.

What is the 2026 VA disability rate for 70%?

For 2026, a veteran alone with a 70% combined rating receives $1,808.45 per month. With a spouse, the rate is $1,961.62. With a spouse and one child, it is $2,084.98. The 2026 rates reflect a 2.8% COLA effective December 1, 2025.

Does the order of ratings matter in VA math?

The order does not change the final combined result, but the VA’s official process combines ratings in descending order — from highest to lowest. This is how the Combined Ratings Table is designed to be used. Always start with your highest rating.

What is the difference between combined rating and TDIU?

A combined rating is the percentage of disability calculated under VA math from your individual ratings. TDIU is a benefit that pays at the 100% rate when you cannot work due to service-connected disabilities, even if your combined rating is below 100%. TDIU has specific schedular requirements.

Can I use a VA combined rating calculator for free?

Yes. Several free calculators are available, including tools on VetCalc.org, Woods Law, and the VA Math Machine on GitHub. The official VA.gov website also provides a disability rating calculator. Always verify results against the official Combined Ratings Table in 38 CFR § 4.25.

Key Takeaways

• VA math uses the “whole person theory” — each disability rating applies to your remaining efficiency, not simple addition

• 50% + 30% = 65% in VA math, which rounds to a 70% combined rating

• The official Combined Ratings Table is published in 38 CFR § 4.25

• The bilateral factor adds an extra 10% for disabilities affecting both arms or both legs (38 CFR § 4.26)

• The 2026 100% rate for a veteran alone is $3,938.58 per month

• Veterans with a combined rating of 30% or higher receive additional compensation for dependents

• TDIU pays at the 100% rate when you cannot work due to service-connected disabilities

• SMC pays above the 100% rate for veterans with specific serious disabilities

• DIC provides $1,699.36 per month to surviving spouses in 2026

• Verify your official combined rating on VA.gov or by calling 1-800-827-1000

Official Resources

• VA Disability Compensation — VA.gov/disability

• VA Combined Ratings Table — 38 CFR § 4.25 (ecfr.gov)

• VA Bilateral Factor — 38 CFR § 4.26 (ecfr.gov)

• VA Compensation Rates — VA.gov/disability/compensation-rates

• VA View Disability Ratings — VA.gov/disability/view-disability-rating

• VA Special Monthly Compensation — VA.gov/disability/compensation-rates/special-monthly-compensation-rates

• VA Dependency and Indemnity Compensation — VA.gov/disability/dependency-indemnity-compensation

• VA Benefits Hotline — 1-800-827-1000