Quick answer (US)
Fastest path: open the Amex app or americanexpress.com → Account → Disputes / Charge Status, upload proof, then track the case number. If Amex denies a billing error that fits the Fair Credit Billing Act window, send a written billing-error letter and, if needed, a complaint to the CFPB.
Copy-paste billing-error letter
Use your dates and amounts. Keep a PDF of what you send.
Date: [today] My name: [full name] Amex account ending: [last 4] Charge date / amount / merchant: [details] I am writing about a billing error under the Fair Credit Billing Act. I dispute the charge listed above because: [unauthorized / wrong amount / not received / cancelled / other]. Please investigate, explain the decision in writing, and correct my statement if the charge is in error. Mailing address on file: [address] Phone / email: [contact]
What to upload
- Screenshot of the posted charge line and statement date
- Order, cancellation, or merchant chat
- Tracking or proof of non-delivery
- Your Amex case number once opened
File in the app or website
In the Amex US app: open the charge → Dispute / Report a problem → pick the reason → upload receipts → submit and save the case number. Desktop: Statements / Recent transactions. If the button is missing, call the number on the back of the card and ask for a dispute reference in a secure message.
Amex usually wants the merchant name and amount exactly as on the statement, the date you contacted the merchant, cancel or tracking proof, and whether you want a full or partial credit.
Status and timeline
Account → Disputes / Manage My Disputes. Note the case number, status, and any documents-needed deadline. If it sits on pending with no request after about 7–10 days, call and ask whether it is waiting on you, the merchant, or Amex review.
| Stage | What you typically see | What to do |
|---|---|---|
| Day 0 | Case opened; sometimes provisional credit | Save confirmation + case number |
| Days 1–14 | Amex may request receipts or cancel proof | Upload a short timeline plus 3–6 strongest files |
| ~30–90 days | Merchant response + decision window | Answer every Amex request the same day |
| After decision | Credit sticks or denied | If denied on a billing error inside the FCBA window, send the written letter and consider CFPB |
Timelines vary by product and reason. United States consumer information, not legal advice.
Documents by reason
Always attach the posted charge screenshot, the case number, and a 4–6 sentence timeline. Then add files that match the reason you picked: not received (tracking that never delivered), canceled still billed (cancel confirmation + new statement line), wrong amount/duplicate (receipt vs statement), unauthorized (file promptly; you usually do not need a merchant chat first).
To preserve Fair Credit Billing Act rights on a billing error, CFPB still tells you to send a written notice to the billing-inquiries address on your statement so it arrives within 60 days of that statement. Official walkthrough: CFPB: how to fix mistakes in your credit card bill.
If Amex denies the dispute
- Read the denial reason (missing proof vs recognized transaction vs outside the window).
- If it is a billing error inside the FCBA window, send the written notice above.
- File a CFPB complaint if they ignore a valid billing-error path.
Related US issuer guides
- Chase credit card dispute (US)
- Capital One charge dispute (US)
- Credit card chargeback (US)
- PayPal purchase dispute (US)
FAQ
How do I dispute an Amex charge online?
Sign in to American Express Account Center → select the charge → Dispute / Report a problem → choose reason → upload evidence → submit.
How long does an Amex dispute take?
Provisional credit and review timing vary by reason. Check case status in Account Center messages and answer document requests the same day.
What evidence helps most?
Receipts, cancellation emails, delivery tracking, chat transcripts, and a short timeline of what you tried before disputing.