VA Disability Calculator – Advanced Combined Rating

Your Conditions

Enter each service-connected condition and its rating. The list will be sorted from highest to lowest automatically for VA math.

Condition	Percent (%)	Paired Area (optional)	Side	Include

Apply bilateral factor (adds 10% to paired-area combined subtotal before main combination) – optional approximation

Paired areas: Arms, Legs, Ears, Eyes. For bilateral factor, mark two or more conditions in the same paired area and choose Left/Right.

Results & Steps

Final Combined Rating

—

Raw: —

Rounded to nearest 10 as per VA rules.

Remaining Efficiency after all steps

—

Chart shows how the combined rating grows as conditions are applied in descending order.

#	Condition	Percent	Step Combined (raw)	Remaining Efficiency

Example Data

Condition	%	Area	Side
PTSD	50	—	—
Knee limitation	30	Legs	Left
Knee instability	10	Legs	Right
Tinnitus	10	Ears	—
Back strain	20	—	—

Formula Used

VA math combines ratings sequentially from highest to lowest using remaining efficiency. If the current combined rating is C and the next condition is p%, the new raw combined is:

new = C + (100 − C) × (p / 100)

The final result is rounded to the nearest 10. When the bilateral factor is enabled, conditions on paired areas (Arms, Legs, Ears, Eyes) are grouped: their subtotal gets an extra 10% before combining with other conditions (approximation of the official table method).

How to Use

Enter each condition and its percentage. Optionally pick a paired area and side.
Toggle the bilateral option if it applies to paired conditions.
Click Calculate to view the steps, final raw value, and rounded rating.
Export your inputs and results to CSV or PDF for your records.
Use the chart to understand how each condition affects the total.

FAQs

1) Do I enter conditions in any order?

Yes. The calculator sorts them from highest to lowest automatically before combining.

2) What rounding is applied?

The raw combined value is computed to decimals. The final rating is rounded to the nearest 10.

3) How does the bilateral factor work here?

If enabled, conditions within the same paired area and across left/right sides are subtotaled, then increased by 10%, then combined with the remaining conditions.

4) Is this an official determination?

No. This tool assists understanding of VA math but is not an official rating or legal advice.

5) Can I save my data?

Use the CSV and PDF export buttons to download your inputs and results locally.