Most buddy letters fail for the same reason: they try to do the doctor’s job.
A statement that says “he clearly has PTSD from what happened over there” carries almost no weight. A statement that says “he slept in the hallway with the light on for six months after he got back, and I know because I was his roommate” can decide a claim.
What “Competent Lay Evidence” Means
The VA’s own regulation defines it precisely. Competent lay evidence is evidence that doesn’t require specialized education or training, provided by someone with knowledge of the facts, conveying matters that can be observed and described by a lay person.
That last phrase is the whole game. You are competent to describe what you saw, heard, and lived through. You are not competent to diagnose, and the moment you try, a rater discounts the statement.
| Weak — outside lay competence | Strong — observable and describable |
|---|---|
| “He suffers from severe PTSD.” | “He wakes up shouting three or four nights a week. I sleep in the next room and hear it.” |
| “Her back injury was caused by the fall in 2007.” | “I saw her fall off the loading ramp in March 2007 at Fort Lewis. She couldn’t stand up on her own.” |
| “His hearing loss is service-connected.” | “We worked the flight line without hearing protection for a year. He’s asked me to repeat myself constantly ever since.” |
| “He deserves a higher rating.” | “He used to hunt every fall. He hasn’t gone in four years because he can’t walk that terrain.” |
The definition lives in 38 CFR 3.159, which is worth reading before you write a word.
Who Can Write One
Almost anyone with first-hand knowledge. The limitation is what they observed, not who they are.
- Someone you served with — the classic buddy letter, especially for an event that never made it into your records.
- Your spouse or partner — often the single most valuable statement, because they observe the daily reality nobody else sees.
- Adult children, parents, siblings — particularly for “before and after” comparisons.
- Co-workers and supervisors — strong for employment impact and unemployability claims.
- Friends and neighbors — useful for describing activities you’ve given up.
- You yourself. A veteran’s own lay statement is evidence too, and it’s routinely underused.
The Form: 21-10210
VA Form 21-10210 is the Lay/Witness Statement, and it’s the preferred vehicle now. It has the certification language built in, which matters — an unsigned, undated statement carries less weight than one certified as true.
You can attach a longer typed statement if the form’s space runs out. Reference it on the form, sign both, and submit them together. The form itself is on VA’s forms page.
How to Write One That Holds Up
- Open with the relationship and the timeframe. “I served with Sergeant Miller in 2nd Platoon at Fort Carson from June 2009 to August 2011.” Establish how you’re in a position to know.
- Describe what you personally witnessed. Events, dates as close as you can get them, places, and what you saw or heard.
- Say when you don’t remember exactly. “Sometime in the spring of 2010, I believe March” is more credible than a false precision that later contradicts a record.
- Give concrete before-and-after detail. What did he do before that he can’t do now? Specific activities beat adjectives.
- Stop at the edge of what you know. No diagnoses, no causation opinions, no arguments about percentages.
- Sign and date it. Every time.
Length Is Not the Point
A tight page of specific observation beats five pages of general praise. Raters read a lot of these, and padding reads as padding.
Write it in your own voice. A statement that sounds like it was copied from a template — because it was — invites a rater to weigh it accordingly.
Where Buddy Letters Matter Most
| Claim situation | Why lay evidence carries weight |
|---|---|
| An in-service event missing from records | A witness can establish an incident that was never documented |
| Records destroyed in the 1973 fire | Lay testimony helps reconstruct service the paperwork can’t |
| PTSD and mental health claims | Symptoms are observable; family and unit members see what a clinic visit doesn’t |
| Continuity of symptoms since service | Witnesses can bridge decades between separation and the first medical record |
| Unemployability claims | Supervisors and co-workers can describe accommodations and missed work |
| Rating increase requests | Daily-life impact often isn’t captured in a short exam |
The 1973 fire row is worth dwelling on. If your records burned, lay evidence isn’t a supplement — it may be the primary evidence available. Our guide to requesting a DD-214 and what happens when records were destroyed covers the reconstruction routes.
Mistakes That Sink Statements
- Diagnosing. The single most common error, and it undercuts everything else in the letter.
- Overstating. A rater who catches one exaggeration discounts the rest.
- Contradicting the record. A confident date that conflicts with the service record does real damage — hedge honestly instead.
- Vagueness. “He was never the same” says nothing a rater can use.
- No signature or date. Easily fixed, frequently forgotten.
- Writing about things you didn’t witness. Secondhand accounts are weak; say plainly what you were told versus what you saw.
Where It Fits in the Claim
Lay statements support a claim; they don’t replace medical evidence. Service connection generally still needs a current diagnosis and a link to service.
What buddy letters do is fill the gap the paperwork left. Pair them with the rest — our guides to how VA disability ratings work, what happens at a C&P exam, and the appeal lanes after a denial cover the surrounding pieces. If your claim involves toxic exposure, our PACT Act guide explains where presumptives change the evidence you need.
Frequently Asked Questions
What form is a buddy letter?
VA Form 21-10210, the Lay/Witness Statement. It includes the certification language and is the preferred form.
Who can write a buddy letter?
Anyone with first-hand knowledge — someone you served with, a spouse, family member, co-worker, or friend. You can also write your own lay statement.
Can a buddy letter mention a diagnosis?
No. A lay witness isn’t competent to diagnose. Describe observed symptoms and events instead, and leave conclusions to the medical evidence.
How long should a buddy letter be?
Usually one page. Specific first-hand detail matters far more than length.
Does a buddy letter have to be notarized?
No. It needs to be signed and dated, with a certification that the statement is true to the best of the writer’s knowledge.
Can lay evidence alone win a claim?
Rarely on its own. It’s most powerful when it establishes an event or a continuity of symptoms that medical records don’t document.
Get Someone to Read It First
Before you submit, have an accredited service officer look at the statement. They’ll catch the diagnosing sentence and the date that conflicts with your record — the two problems that quietly cost claims.
Our guide to free help from an accredited service officer explains how to reach one, or call Post 51 at (541) 451-1351.