Step by step

How BillFighter Works

From upload to resolution — in minutes, not months.

The process

Five steps. That's it.

01

Upload Your Bill

Snap a photo or upload a PDF of any medical bill, collection notice, explanation of benefits, or insurance denial letter. BillFighter accepts documents from hospitals, clinics, labs, collection agencies, and insurance companies.

02

AI Analysis

Our AI reads every line of your document and cross-references it against known billing practices, error patterns, and your legal rights as a consumer. In seconds, you get a plain-English breakdown of what the bill contains, what looks wrong, what’s negotiable, and what action to take.

03

Generate Your Letter

Select the type of dispute letter you need — itemized bill request, billing error dispute, debt validation, insurance appeal, or commissioner complaint. BillFighter generates a legally-sound, personalized letter ready to send.

04

Send Certified Mail

With one tap, BillFighter sends your letter via USPS certified mail directly to the provider, collector, or insurance company. You get a tracking number. They get proof it was received. Certified mail is legally significant — it creates a paper trail that protects you.

05

Track Your Case

BillFighter tracks response deadlines automatically. Under the FDCPA, debt collectors have 30 days to respond to a validation request. We monitor that window and alert you when action is needed.

Use cases

What BillFighter can help with.

Medical bills from hospitals, clinics, ERs, and specialists
Collection notices and debt validation requests
Insurance denials and prior authorization disputes
Explanation of benefits (EOB) errors
Balance billing disputes
Charity care and financial assistance applications
Why we're different

Flat fee. No percentage cut.

No lawyers. No percentage of your savings taken. No complicated process. BillFighter charges a flat monthly fee — Pro is $19.99/month and includes 3 certified mail sends. Additional sends are $4.99 each. Free users get 5 bill analyses per month. Every dollar you save is yours to keep.

$0
Free plan
$19.99/mo
Pro plan
0%
Cut of savings

Ready to fight back?

Start for free — no credit card required.