How VA Combined Disability Ratings Work (With Examples)

If you have more than one service-connected disability, VA does not simply add the percentages. A 50% rating and a 30% rating do not automatically become 80%. VA uses what it publicly describes as a “whole person” approach and a Combined Ratings Table so the total never treats a person as more than 100% efficient.

This guide explains that math in plain language, points to VA’s own pages, and links a free browser calculator on this site. It is not a rating decision, legal advice, or a substitute for an accredited Veterans Service Organization (VSO). Muster Desk is not affiliated with the Department of Veterans Affairs.

Why combined ratings feel “wrong” at first

People expect addition. VA starts from a different idea: after the first disability, each new disability applies only to the remaining efficiency.

VA’s public overview on About disability ratings walks through the table method. In short:

1. Put your individual ratings in order from highest to lowest.
2. Find where the highest rating and the next rating meet on the Combined Ratings Table (or use the same whole-person formula the table represents).
3. If you have more ratings, take the unrounded combined value so far and combine it with the next disability.
4. Only after all disabilities are combined do you round to the nearest 10% for the rating VA publishes for pay purposes. Values ending in 1–4 generally round down; those ending in 5–9 round up (VA states endings of 5 are adjusted upward).

That is why 50% and 30% combine to 65 in VA’s example walkthrough, which then rounds to 70%—not 80%.

A worked example (no bilateral factor)

Suppose your ratings are 50%, 30%, and 10%, matching VA’s multi-disability illustration style:

• Combine 50 with 30 → 65 (exact combined value so far)
• Combine 65 with 10 → 69
• Round 69 to the nearest 10% → 70% combined

Your official letter may list each condition separately and then show the combined evaluation used for compensation. Always trust the rating decision over any website tool—including ours.

What the bilateral factor is

When disabilities affect both arms, both legs, or paired skeletal muscles, VA’s regulation on the bilateral factor (discussed in Board decisions citing 38 C.F.R. § 4.26) generally directs that:

1. The ratings for the right and left sides are combined first using the usual combined-ratings method.
2. Then 10% of that combined value is added (not combined again).
3. That bilateral-inclusive value is treated as one disability when arranging severity and combining with everything else.

VA’s April 16, 2023 updates to § 4.26 also address choosing the approach most favorable to the veteran when including or excluding certain bilateral disabilities would change the result. Those nuances are why a calculator is only an educational estimate—complex bilateral patterns belong with a VSO or the rating decision itself.

Tiny bilateral illustration

VA materials and Board examples often show two 10% bilateral ratings:

• Combine 10 with 10 → 19
• Add 10% of 19 → 19 + 1.9 = 20.9 (often treated as about 21 going forward)
• Then combine that figure with your other ratings in severity order

Use our VA combined rating calculator to step through sample numbers. Compare the steps to VA.gov’s table explanation—not the other way around.

What combined rating does not mean

• It is not a promise of a specific monthly payment until VA issues / updates your decision and you confirm the current compensation rate tables.
• It does not replace Individual Unemployability (TDIU), special monthly compensation, or other separate issues.
• It does not tell you whether a new claim, increase, or secondary condition will be granted.
• Online estimators can disagree slightly with the printed Combined Ratings Table because of intermediate rounding conventions. When in doubt, the rating decision and VA.gov win.

How to use a calculator responsibly

1. Copy ratings exactly as they appear on your most recent rating decision (or as hypotheticals if you are only learning).
2. Mark which ones are truly bilateral under VA rules—do not guess just to inflate a number.
3. Treat the output as a study aid before a VSO meeting, not as advice to file or reopen a claim.
4. Keep a paper trail of decisions, effective dates, and evidence with a simple organizer.

Organizing before you talk to a VSO

Bring:

• Your latest rating decision letter(s)
• A list of conditions you believe are missing or underrated, with dates of onset / worsening
• Treatment records or a plan to request them
• Notes on bilateral issues (left vs right, same joint pairs)

Accredited help is free through many VSOs. Use VA’s accredited representative search.

Related guides and tools

• How to file a VA disability claim step by step
• VA Intent to File
• Organize VA claim evidence and buddy statements
• Tool: VA combined rating calculator

Intermediate rounding: why two calculators can differ by a few points

VA’s online explanation uses the Combined Ratings Table grids. Software estimators sometimes:

• Keep more decimal places between steps
• Round each intermediate combine to a whole number the way the printed table does
• Handle bilateral add-ons with slightly different intermediate precision

A one-point gap before final rounding can flip a borderline value (for example 64 vs 65) and change the published combined rating after rounding to the nearest 10%. That is another reason to treat web tools as study aids. If your rating decision shows a combined evaluation you do not understand, ask an accredited representative to walk the table with you using your listed evaluations—not a blog example.

Increases, secondaries, and “pyramiding” (high level)

Combined-rating math assumes a list of evaluations. Separate issues—whether a condition should be service-connected, whether two diagnoses are improperly overlapping (“pyramiding” concepts in rating practice), or whether an increase is warranted—are rating and evidence questions, not calculator questions. Do not open a new claim solely because a spreadsheet looks favorable. Gather records, talk to a VSO, and read VA’s current filing guidance first.

Special monthly compensation and 100% schedular

Hitting a high combined evaluation is not the same thing as every additional benefit veterans sometimes hear about on social media. Special monthly compensation, aid and attendance, and related topics have their own criteria on VA.gov. Keep them off your combined-rating scratch paper until you are reading the official pages for those programs.

Keep a simple combined-rating notebook page

When you meet a VSO, a one-page snapshot helps:

• List each SC condition and % as of the decision date
• Star any bilateral pairs
• Write the combined % from the decision letter
• Leave a blank line for “questions to ask”

That habit pairs well with Intent to File timing and evidence trackers covered in our other VA guides.

Sources

• VA: About disability ratings / combined ratings
• VA: Disability compensation overview
• VA: How to file a claim
• Regulatory discussions of § 4.25 / § 4.26 appear in publicly posted Board of Veterans’ Appeals decisions; always prefer the current Code of Federal Regulations text and your rating decision for anything that affects your claim.

Guide published November 2026. Examples are illustrative. Official ratings come only from VA.