How to File a VA Disability Claim (2026 Step-by-Step)

Published 2026-05-22 · Reference, not legal advice · Sources: 38 CFR Part 3, VA Form 21-526EZ instructions, VA.gov

TL;DR. File VA Form 21-526EZ online via VA.gov or on paper. Submit alongside service treatment records, current medical records, and lay statements. Use the Fully Developed Claim (FDC) path for fastest processing. Average decision time: 100-150 days. Initial claims are best filed with free VSO help; paid attorneys come into play only at the appeal stage. The decision letter tells you the percentage and effective date; if you disagree, you have one year to file an appeal.

Before you file: understand the four service-connection theories

Every disability rating starts with "service connection" — proving the disability is related to military service. There are four theories, and your claim will succeed under whichever one fits your facts:

1. Direct service connection

An in-service event, injury, or exposure directly caused or aggravated the disability. Example: a veteran injured their back in a Humvee accident in 2014 and now has chronic lumbar strain. To win on direct service connection, you need (a) evidence of the in-service event, (b) a current diagnosis, and (c) a medical nexus opinion linking the two.

2. Secondary service connection (38 CFR 3.310)

A NEW disability is caused or aggravated by an EXISTING service-connected condition. Example: a veteran rated for service-connected PTSD develops chronic depression from coping with the PTSD; depression is service-connected secondary to PTSD. This is one of the most-used theories because it lets veterans expand their rated conditions without re-litigating service connection.

3. Presumptive service connection

The VA presumes service connection for specific conditions when you meet specific service criteria, with no nexus required. Major presumptive categories:

Agent Orange exposure (Vietnam, certain other locations): prostate cancer, ischemic heart disease, type 2 diabetes, multiple myeloma, hairy cell leukemia, B-cell leukemias, bladder cancer, hypothyroidism, hypertension (added 2022), and more (38 CFR 3.309(e)).
Gulf War undiagnosed illnesses: chronic multisymptom illness with onset before 2026 (38 CFR 3.317).
Camp Lejeune water contamination (1953–1987): kidney cancer, liver cancer, NHL, leukemias, Parkinson's, bladder cancer.
Burn pit / airborne hazards (PACT Act 2022, expanded 2024): cancers and respiratory conditions tied to post-9/11 Southwest Asia deployment.
Radiation exposure: specific cancers in atomic veterans.

4. Aggravation (38 CFR 3.306)

A pre-existing condition was made worse by military service. The veteran must show the condition was documented (or "noted") at entrance to service AND that service worsened it beyond its natural progression. This is the trickiest theory; most veterans pursue 1, 2, or 3 first.

What to gather before filing

The Fully Developed Claim (FDC) path is significantly faster but requires you to submit all relevant evidence with the claim. Even outside FDC, gathering this in advance makes the difference between a 100-day decision and a 200-day decision:

Service treatment records (STRs). If you separated after 2014, the VA usually already has these. If earlier, request from the National Personnel Records Center (NPRC) using SF-180.
Service personnel records. Documents in-service events, deployments, MOS, awards, performance evaluations.
Current medical records. Both VA and private. The VA pulls VA records automatically; private records you must submit. Get records from every provider who has treated the claimed condition in the last 12 months minimum.
Lay statements ("buddy statements"). For in-service events not in the records. Statements from fellow service members, family, or yourself. Format: declaration under penalty of perjury, signed and dated.
Disability Benefits Questionnaires (DBQs), optional but powerful. A DBQ is a structured medical form the VA's C&P examiner fills out. You can have YOUR private doctor fill out the same DBQ in advance and submit it. Forms are public on VA.gov by condition.
Nexus opinion letter. For non-presumptive direct service connection, a letter from a private doctor stating that "it is at least as likely as not" the current condition is related to the in-service event. The "at least as likely as not" phrasing is critical — it matches the VA evidentiary standard.

The filing path: VA Form 21-526EZ

Three filing channels:

Online at VA.gov — the fastest path. Requires a VA.gov login with ID.me, Login.gov, or DS Logon. The web form follows the same structure as the paper form but auto-saves and accepts evidence uploads.
Paper VA Form 21-526EZ — mailed to the VA Evidence Intake Center in Janesville, WI (address on the form). Use only if the online portal is blocked for you.
Through a VSO representative — the VSO files for you using their own systems (often eBenefits/VBMS access). This is the most common path for first-time filers.

The form asks you to:

List each claimed condition with diagnostic name (use the VA's nomenclature where possible).
Identify the type of claim (initial, increase, supplemental, secondary).
Provide details about the in-service event or exposure.
Identify which evidence you're attaching and which you're authorizing the VA to obtain.
Sign the Fully Developed Claim certification IF you have submitted all relevant evidence.

What happens after filing

The first communication you'll see is the "VA Acknowledgement" within a few days, confirming receipt. Then the standard sequence:

VCAA (Veterans Claims Assistance Act) letter within 30 days — identifies what evidence the VA needs and what they will obtain for you.
C&P exam scheduling — for most claims, you'll receive a notice from QTC, LHI, or VES (the VA's contracted exam vendors) within 30 to 60 days. See our C&P exam guide.
Evidence gathering — the VA pulls additional records (military, VA medical, employer).
Rating decision — a VA Rating Specialist reviews everything and assigns a percentage per condition.
Decision letter — sent via VA.gov inbox + certified mail. Contains each condition's individual percentage, the combined evaluation, the effective date, and the monthly compensation amount.

If the decision is favorable: payments begin retroactive to the effective date (usually the claim filing date). If unfavorable or partially favorable: you have one year to appeal in any of the three appeal lanes — see appeals overview.

Common mistakes

Filing too few conditions. The VA only decides what you claim. If you have five service-connectable conditions but only claim two, the other three remain unrated. List every condition you can connect to service.
Not specifying secondary claims. If you have PTSD and also have depression caused by PTSD, you must specifically claim "depression secondary to PTSD" — not just "depression." The secondary nature is what triggers the favorable evidentiary path.
Forgetting lay statements. The VA gives substantial weight to credible lay evidence for non-medical matters (in-service event descriptions, symptom timelines). Veterans without buddy statements often lose direct-service-connection claims on the "in-service event" prong even when the rest of the case is strong.
Skipping the FDC path. FDC processing is 30–60 days faster on average. The "I'll add evidence later" approach gets bumped to standard track even if the evidence eventually comes in.
Not using a VSO. Free VSO representation is the highest-leverage decision a first-time filer can make. The DAV, American Legion, VFW, AMVETS, MOPH, PVA, and dozens of state-level VSOs all provide free claim preparation. The accreditation directory at va.gov/ogc/apps/accreditation lists every accredited rep by state.

After your decision letter, plug your ratings in →

Special cases and shortcuts

Pre-discharge claim (BDD)

Active-duty service members within 180 days of separation can file the Benefits Delivery at Discharge (BDD) claim under VA Form 21-526EZ — same form, special timing. The advantage: rating decisions are often issued within 30 days of discharge so compensation starts immediately. Eligible 90 to 180 days before separation.

Quick Start (60–89 days from discharge)

If you're 60 to 89 days from discharge and missed the BDD window, the Quick Start program processes claims through the same pre-discharge channel but without the BDD timing guarantee.

Intent to File (ITF)

If you're not ready to file a full claim but want to preserve the effective date, submit an Intent to File (VA Form 21-0966). It locks in your effective date for one year while you gather evidence. Critical for veterans who realize they have a claim but need months to assemble records.

Sources cited in this article

VetDisabilityCalc is an independent reference site operated by Zoom Lifestyle LLC. We are not VA-accredited and we do not prepare or present VA claims. For free representation, use the official VA OGC accreditation directory.