Determine your combined VA disability rating using the "VA Math" method.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Your Combined Disability Rating:
0%
Raw Score: 0%
How VA Disability Math Works
Calculating your VA disability rating isn't as simple as adding percentages together. The Department of Veterans Affairs uses a "Combined Rating Table" based on the principle that a person cannot be more than 100% disabled. This is often referred to as "VA Math."
The Calculation Concept
When you have multiple disabilities, the VA calculates them starting with the highest rating first. Each subsequent rating is applied to the remaining "efficient" portion of your body.
Step 1: Start with 100% efficiency.
Step 2: Take the highest disability rating (e.g., 50%). 100% – 50% = 50% remaining efficiency.
Step 3: Take the next highest rating (e.g., 20%). Apply it to the remaining 50%. (20% of 50 = 10%).
Step 4: Add that 10% to the initial 50%. Your combined rating is now 60%. Your remaining efficiency is now 40%.
Rounding Rules
The VA rounds the final "raw" percentage to the nearest 10%. For example, a raw calculation of 64% is rounded down to a 60% disability rating. A raw calculation of 65% is rounded up to a 70% disability rating.
Example Table
Condition
Rating
Combined Math
PTSD
50%
50% of 100 = 50%
Sleep Apnea
30%
30% of remaining 50 = 15% (Total 65%)
Tinnitus
10%
10% of remaining 35 = 3.5% (Total 68.5%)
Final Rounded Rating:
70%
var ratingCount = 2;
function addRatingField() {
ratingCount++;
var wrapper = document.getElementById('rating-inputs-wrapper');
var div = document.createElement('div');
div.className = 'rating-row';
div.style.cssText = 'display: flex; align-items: center; gap: 10px; margin-bottom: 10px;';
div.innerHTML = '' +
" +
'0%10%20%30%' +
'40%50%60%70%' +
'80%90%100%';
wrapper.appendChild(div);
}
function calculateVARating() {
var inputs = document.getElementsByClassName('va-rating-input');
var ratings = [];
for (var i = 0; i 0) {
ratings.push(val);
}
}
if (ratings.length === 0) {
document.getElementById('va-result-box').style.display = 'block';
document.getElementById('combined-rating-output').innerText = '0%';
document.getElementById('raw-rating-detail').innerText = 'Raw Score: 0%';
return;
}
// Sort ratings descending (High to Low) as per VA requirements
ratings.sort(function(a, b) { return b – a; });
var currentEfficiency = 100;
var combinedRating = 0;
for (var j = 0; j 100) roundedRating = 100;
document.getElementById('va-result-box').style.display = 'block';
document.getElementById('combined-rating-output').innerText = roundedRating + '%';
document.getElementById('raw-rating-detail').innerText = 'Raw Combined Score: ' + rawScore.toFixed(2) + '%';
// Scroll to result
document.getElementById('va-result-box').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}