VA Disability Calculator VA.Gov

VA Combined Rating Formula:

\[ \text{Combined rating} = 100\% - \prod_{i=1}^{n} (100\% - \text{rating}_i) \]

Combined Disability Rating:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is VA Combined Disability Rating?

The VA Combined Disability Rating is calculated using a specific formula that accounts for multiple disability ratings. It's not a simple sum but rather a cumulative calculation that considers how each additional disability affects the remaining non-disabled portion.

2. How Does the Calculator Work?

The calculator uses the VA's standard formula:

\[ \text{Combined rating} = 100\% - \left[(100\% - R_1) \times (100\% - R_2) \times \cdots \times (100\% - R_n)\right] \]

Where:

\( R_1, R_2, \ldots, R_n \) — Individual disability ratings (in percentage)

Key Rules:

Ratings are applied in descending order (highest first)
Each subsequent rating is applied to the remaining non-disabled portion
Final result is rounded to nearest 10%
Maximum combined rating is 100%

3. Importance of Accurate Calculation

Details: The combined rating determines the veteran's compensation level, healthcare benefits, and other entitlements. Even small differences in calculation can significantly impact monthly compensation.

4. Using the Calculator

Tips: Enter all your disability ratings separated by commas (e.g., "50, 30, 20"). The calculator will sort them properly and apply the VA's calculation method.

5. Frequently Asked Questions (FAQ)

Q1: Why doesn't VA just add the percentages?
A: The VA system accounts for how multiple disabilities interact, recognizing that two 50% disabilities don't make someone 100% disabled.

Q2: How does bilateral factor work?
A: Bilateral conditions (affecting both arms/legs) get an extra 10% of the combined value of those specific disabilities before overall combination.

Q3: What's the difference between combined and total ratings?
A: Combined rating is what this calculator shows. Total rating may include additional factors like unemployability (TDIU).

Q4: How often should I recalculate?
A: Recalculate whenever you receive new disability ratings or when existing ratings change.

Q5: Does this match the official VA calculation?
A: This follows VA rules but always verify with official VA correspondence as special cases may apply.