va disability calculator

How this VA disability calculator works

The Department of Veterans Affairs does not add percentages like normal math. Instead, it uses a "whole person" approach. Each new rating is applied to whatever healthy percentage remains after previous ratings are accounted for.

That is why two ratings like 50% and 30% do not equal 80% in most cases. Under VA math, the result is usually lower because the second percentage applies to the remaining non-disabled portion, not the original 100%.

VA combined rating formula (plain English)

Step 1: Start with your highest rating

Your largest service-connected rating is applied first. This has the biggest impact on the final result.

Step 2: Apply each additional rating to the remainder

If you are 50% disabled, the VA considers 50% of the "whole person" remaining. A second 30% rating is then 30% of the remaining 50, which adds 15 points (not 30 full points).

Step 3: Round to a final schedular rating

After combining all ratings, the result is rounded to the nearest 10% for compensation purposes. For example:

• 74% rounds to 70%
• 75% rounds to 80%
• 95% rounds to 100%

Example calculation

Suppose a veteran has ratings of 50%, 30%, and 20%:

• Start at 50%
• Apply 30% to the remaining 50% healthy portion: +15 → 65%
• Apply 20% to the remaining 35% healthy portion: +7 → 72%
• Final VA rounded rating: 70%

The calculator above automates this and shows each step in a table so you can verify the math.

Common mistakes veterans make

• Adding disability percentages directly instead of using the whole person method.
• Forgetting to include secondary conditions that may be separately compensable.
• Ignoring the bilateral factor when applicable to paired extremities.
• Assuming a high combined number automatically guarantees 100% without reviewing all rating decisions.

What this tool includes (and does not include)

Included

• Multiple disability percentages
• Automatic sorting from highest to lowest
• Step-by-step breakdown of combined math
• Final rounding to nearest 10%

Not fully included

• Advanced bilateral factor automation
• Special Monthly Compensation (SMC) logic
• TDIU approval criteria or effective date analysis
• Current monthly compensation amounts by dependency status

Tips before filing or appealing

If your estimate is close to a higher bracket, focus on complete medical evidence and nexus support. A well-documented claim can make a major difference in service connection, percentage level, and effective date.

Many veterans also benefit from discussing their case with an accredited VSO, claims agent, or VA-accredited attorney when preparing an appeal or supplemental claim.

Quick FAQ

Is this an official VA calculator?

No. This is an educational estimator based on standard combined-rating math.

Why is my result different from what I expected?

Most differences come from VA rounding rules, rating order, bilateral factor details, or conditions not yet service connected.

Can I reach 100% without a single 100% condition?

Yes. Multiple ratings can combine to 100% under VA math, depending on your total combined value and rounding outcome.