CLASS A · FIELD USE

How VA Disability Math Actually Works

Why VA Ratings Don't Add Like Normal Math
★ Whole Person Theory · Combined Ratings Table · 38 CFR Part 4 ★
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VA Disability Math Calculator

Generated · Educational use only · 38 CFR Part 4
01 Calculation Mode
Mode A · Single Claim
Mode B · Add to Existing
02 Show Raw Values
On · Show Raw
Off · Official Only
Display intermediate combined values alongside the official VA rating.
03 Existing VA Rating
Current Official Rating
0%
Remaining Healthy Efficiency
100%
04 Your Conditions
Condition (optional) Rating Bilat.
Auto-sorted highest to lowest before calculating
Bilateral factor (38 CFR 4.26): Adds 10% when you have compensable disabilities of paired extremities — both arms, both legs, both knees, both ears (excluding tinnitus), etc. Mark the checkbox for each qualifying condition.
05 Step-by-Step VA Math
# Condition Rating Rem.
Before		 Added Raw
Combined		 Rounding Rating
After
Your Results
Final Official VA Rating
0%
Remaining Efficiency
100%
RED Disabled (0%)
GREEN Healthy (100%)
Est. Monthly Tax-Free
—
per month · 2026 rates
Dependents
Spouse
Children under 18
0
Estimate based on VA.gov 2026 compensation rates (eff. Dec 1, 2025 · 2.8% COLA). Does not include Aid & Attendance, SMC, or school-age children. Verify your exact rate at VA.gov.
06 Rounding Rules
The VA rounds to the nearest 10 using the 0–4 down, 5–9 up rule.
0 – 4
Rounds Down
↓
5 – 9
Rounds Up
↑
07 Why Your Rating May Not Increase
Even when you add a condition, your official VA rating may stay the same if the intermediate value doesn't reach the next rounding threshold.
Add ratings to see examples
Switch to Mode B and add ratings to see how rounding can prevent compensation increases.
Disclaimer
Educational tool only. Actual VA decisions may include bilateral factor, protected ratings, effective dates, pyramiding rules, TDIU, SMC, and other VA-specific adjudication considerations. Consult a VA-accredited representative for your specific situation.
Resources for Veterans

08 Official VA Resources

Direct links to authoritative VA.gov pages and federal regulations
VA.gov
File a Disability Claim
Apply for VA disability compensation online using Form 21-526EZ. Pre-fills your saved info.
VA.gov
Check Claim Status
Track the status of an open claim, decision review, or appeal in real time.
VA.gov
Disability Compensation Hub
Eligibility, evidence requirements, secondary conditions, increases, and supplemental claims.
eCFR · Title 38 Part 4
Schedule for Rating Disabilities
The full Schedule for Rating Disabilities — the regulation that drives every VA rating decision.
eCFR · 38 CFR § 4.25
Combined Ratings Table
The official Whole Person Theory regulation that this calculator implements.
VA Knowledge Base
M21-1 Adjudication Manual
Internal VA manual used by raters. Knowing what they reference helps you build a stronger claim.
VA.gov
VA Forms Library
21-526EZ, 21-0966 (Intent to File), 21-4138 (Statement in Support), and every other VA form.
VA.gov
Eligibility Requirements
Who qualifies for disability compensation, including presumptive conditions and PACT Act coverage.

09 Find an Accredited Representative

Only VA-accredited individuals can legally represent you on a claim. VSO services are free.
VA.gov · Official Search
Find an Accredited Rep
Search the official VA database of accredited attorneys, claims agents, and VSO representatives.
VA Office of General Counsel
OGC Accreditation Search
Verify any individual's VA accreditation before signing a representation agreement.
DAV · National VSO
Disabled American Veterans
Free claims assistance through DAV's National Service Officers. No membership required.
VFW · National VSO
Veterans of Foreign Wars
Free VA claims assistance from VFW's accredited service officers nationwide.
American Legion · National VSO
The American Legion
Veterans benefits assistance through one of the largest VSO networks in the country.
AMVETS · National VSO
AMVETS
Free claims help available to all honorably discharged veterans through AMVETS Service Officers.
VA.gov
State VA Offices
Locate your state's VA office. Many states have their own accredited service officers.
Wounded Warrior Project
WWP Benefits Service
Benefits and claims help for post-9/11 wounded, ill, and injured veterans and their families.

10 Trusted Reading

Educational content from reputable veteran law firms and advocacy organizations
CCK Law
Chisholm Chisholm & Kilpatrick
Veteran-focused law firm with an extensive blog on claims strategy, appeals, and ratings.
Hill & Ponton
Hill & Ponton VA Blog
In-depth articles on every aspect of VA disability — secondary conditions, C&P exams, ratings.
NVLSP · Nonprofit
National Veterans Legal Services
Nonprofit providing free legal services and the definitive Veterans Benefits Manual.
Berry Law
Berry Law Veterans Blog
Veteran-owned firm focused on PTSD, TDIU, and complex disability appeals.
Veterans Law Group
Veterans Law Group Blog
Articles from accredited attorneys covering appeals, denials, and effective dates.
VA.gov
PACT Act Information
The PACT Act expanded benefits for veterans exposed to burn pits, Agent Orange, and other toxins.
11 Using AI Tools Alongside Your VSO
AI tools like Claude and ChatGPT can be a powerful preparation aid — but they are not a substitute for an accredited VSO, claims agent, or attorney. Think of AI as the smart friend who helps you organize your thoughts before the real conversation. Your VSO files the claim. Use the steps below to get the most out of both.
1
Inventory your conditions and evidence first
Before you talk to AI or a VSO, pull together your DD-214, service treatment records, current medical records, any prior VA decisions, and a list of every condition you want claimed. AI works best when you can describe specifics — diagnosis dates, frequency of symptoms, how each condition affects work and daily life.
2
Use AI to understand the regulations
Ask AI to translate dense VA regulations into plain English. Paste a section of 38 CFR Part 4, or describe a condition, and ask how it's typically rated. Always verify the AI's response against the eCFR or M21-1 manual — AI can make mistakes, especially on niche regulations.
Example prompt
Explain how the VA rates migraines under 38 CFR § 4.124a Diagnostic Code 8100. What's the difference between a 30%, 50%, and how do "prostrating attacks" factor in? Include what evidence I'd need to support each level.
3
Draft your personal statement (Form 21-4138) with AI
A strong lay statement describes how a condition impacts your daily life — sleep, work, relationships, mobility. AI can help you organize a rambling brain-dump into a clear, structured narrative. Write the facts yourself, then ask AI to tighten the prose. Never let AI invent details or symptoms.
Example prompt
I'm writing a VA personal statement about how my service-connected lumbar back condition affects my daily life. Here are my notes: [paste your raw notes — symptoms, frequency, impact on work, sleep, family activities, etc.] Please help me organize this into a clear, factual statement suitable for VA Form 21-4138. Keep it in first person, factual, and avoid exaggeration. Don't add anything I didn't say.
4
Prepare your C&P exam strategy
Ask AI to walk through what a Compensation & Pension exam typically covers for your condition, what the DBQ (Disability Benefits Questionnaire) measures, and what questions an examiner might ask. The goal is preparation, not coaching dishonest answers. Be truthful — but be ready.
Example prompt
I have a C&P exam scheduled for PTSD. What does the PTSD DBQ measure? What kinds of questions will the examiner ask? What should I make sure I describe accurately about how PTSD affects my daily life and work?
5
Bring it all to your VSO
Walk into your VSO meeting with: a list of conditions, your evidence, a draft personal statement, and any specific questions about strategy. Let the VSO file the claim. They know procedural requirements, deadlines, and what arguments work with the local VARO. They are accredited; AI is not.
6
After you get a decision, use AI to decode it
VA rating decisions can be dense. Paste the relevant section (with personal info removed) and ask AI to explain what was granted, what was denied, what reasons the VA gave, and what your options are (HLR, Supplemental, Board appeal). Then bring that understanding back to your VSO before making any decisions.
Example prompt
Here's a rating decision the VA sent me (personal info redacted): [paste the relevant portion] Please explain in plain English: what conditions were granted and at what rating, what was denied and why, and what my options are for disputing the denials. Reference the specific paths: Higher-Level Review, Supplemental Claim, and Board Appeal.
✓ Use AI for
  • Understanding regulations and DBQs
  • Organizing personal statements
  • Preparing for C&P exams
  • Decoding rating decisions
  • Researching secondary conditions
  • Drafting questions for your VSO
✗ Never use AI for
  • Filing claims directly
  • Legal representation
  • Inventing symptoms or evidence
  • Replacing your VSO or attorney
  • Final advice on appeal strategy
  • Anything submitted as your own statement without your verification