$35 once. No letter, no charge. Claim denied, money back.
Licensed clinician review
15,000+ letters issued
Refunded if denied

Real clinician review
$7M+
Reimbursements processed
15,000+
Letters issued
Same day
Letter delivered
4,000+
merchants, gyms and providers
Works with every FSA/HSA admin
HealthEquity
Fidelity
WEX
HSA Bank
Inspira
Optum
Further
Your FSA and HSA are for medical care, so a gym membership isn’t covered on its own. A licensed clinician can write that it supports treating something specific, and that note is a Letter of Medical Necessity. It’s the same letter your own doctor could write. We just make requesting it take two minutes, and your letter arrives the same day if approved.
A licensed clinician reviews your case
Your letter is good for a full 12 months
Recurring charges stay covered under the same letter
Get the letter first, then buy. It covers what comes after it’s issued, not what came before.
1
Tell us what you want covered
Under two minutes. A few questions about you and what you’re buying.
2
A licensed clinician reviews it
If it’s medically supportable, they sign your letter. Usually the same day, and always within 24 hours.
3
We file it for you
Burst files the claim for you, and your administrator pays it out to your bank account, usually in 1 to 3 days.
15,000+ letters written so far, covering purchases at more than 4,000 merchants, gyms and wellness providers.
What y’all are doing is great for those with FSAs needing things to support their health. Will be sure to recommend this service to my friends.
J
Joseph C.
Burst customer
Oh wow, this is great! I had no idea.
N
Nicole P.
Burst customer
They accepted the claim and issued full reimbursement. I truly appreciate your help and knowledge!
A
Alexandra M.
Burst customer
I am very happy with your service, thanks!
S
Sam L.
Burst customer
A quick walkthrough from sign-up to reimbursement.
No letter, no charge. If a licensed clinician decides a letter isn’t appropriate for you, your payment is refunded automatically. And if your plan denies the claim because of the letter, you get your $35 back too. You can’t pay us and get nothing.
How fast do I get my letter?
Intake takes about two minutes. Your letter is usually signed the same day, and always within 24 hours.
Will my purchase definitely be reimbursed?
No one can promise that, and you should be careful with anyone who does. Your plan administrator makes the final call. If they deny it because of the letter, we refund you.
What if I already bought it?
A letter only covers what you buy after it’s issued. Get the letter first, then buy.
Do I need my own doctor?
No. A licensed clinician in the Burst network reviews your information. You don’t need an existing relationship with a provider.
How long is the letter good for?
Twelve months. Recurring charges for the same thing, like a monthly membership, stay covered under that one letter.
What can I use it for?
Gyms and studios, massage and recovery, supplements, trackers, mattresses, air purifiers and more. If you’re not sure about something, just ask.
On an FSA, your plan year ends and whatever’s left goes back to your employer.
Request my letter
$35 once · Same-day in most cases · Refunded if you don’t get a letter

