File a dispute directly with American Express

American Express handles disputes through its own process, not through your bank — because American Express is both the card issuer and the processor. You contact Amex directly, and Amex investigates the merchant and the transaction. This is different from Visa or Mastercard, where your bank files the dispute on your behalf.

Start by calling the number on the back of your card or logging into your online account. Tell Amex the transaction date, the merchant name, and why you believe the charge is wrong. Common reasons include: the merchant charged you twice, charged you a different amount than agreed, charged you after you cancelled, or you never received the goods or service.

Amex will create a dispute case and assign it a reference number. Write this number down — you will need it to track the case. Amex typically asks you to put your dispute in writing within a set timeframe, usually 10 days. You can do this through your online account, by mail, or by phone, depending on what Amex instructs.

Key Takeaways

  • Contact American Express by phone, online account, or mail within 60 days of the charge appearing on your statement.
  • Amex investigates the merchant directly and does not route your dispute through a bank, because Amex is the card issuer.
  • You may need to provide documentation such as receipts, emails, or proof that you cancelled a subscription or returned merchandise.
  • Amex typically completes its investigation within 30 to 40 days and will credit your account if the dispute is upheld.
  • If Amex denies your dispute, you can request reconsideration with additional evidence or file a complaint with the Consumer Financial Protection Bureau.

Gather documentation before you file

Amex will ask for evidence to support your dispute. The stronger your documentation, the faster Amex can resolve the case. Collect anything that shows what you agreed to pay, what you actually paid, and what happened after the charge.

For a duplicate charge, gather both transactions from your statement and any receipts or confirmation emails from the merchant. For a charge you did not authorize, collect any emails or messages showing you did not approve the transaction. For a cancelled subscription or service, save the cancellation confirmation and any emails from the merchant acknowledging the cancellation. For merchandise you returned, keep the return receipt, tracking number, and any correspondence with the merchant about the return.

If the merchant promised a refund or credit, save those emails. If you have a written contract or terms of service showing what you were supposed to receive, include that too. Amex uses this paper trail to contact the merchant and verify your account of what happened.

Understand the dispute timeline

You have 60 days from the date the charge appears on your statement to file a dispute with American Express. This is a hard important date — disputes filed after 60 days are typically rejected. Mark your statement date on a calendar and file early if you spot a problem.

Once you file, Amex has up to 45 days to investigate and respond. In practice, most disputes are resolved within 30 to 40 days. During this time, Amex contacts the merchant, requests documentation from them, and compares their account of the transaction to yours. If the merchant does not respond or cannot justify the charge, Amex usually rules in your favor.

If Amex credits your account before the investigation is complete, the credit is provisional — Amex can reverse it if the merchant later provides evidence that the charge was valid. Once the investigation closes, any credit becomes permanent.

What happens if Amex rules against you

If Amex investigates and decides the charge was valid, Amex will deny your dispute and you will not receive a refund. Amex will notify you in writing with the reason for the denial. Common reasons include: the merchant provided a receipt or confirmation showing you authorized the charge, or the merchant's records show the service was delivered as promised.

You have options if you disagree with Amex's decision. You can request reconsideration and submit new evidence that was not part of the original dispute — for example, if you later receive a cancellation confirmation from the merchant or find an email proving you never authorized the charge. Send this to Amex with a written explanation of why the new evidence changes the outcome.

If Amex denies reconsideration, you can file a complaint with the Consumer Financial Protection Bureau (CFPB). The CFPB does not overturn Amex's decision, but it investigates whether Amex followed its own dispute procedures correctly. If the CFPB finds that Amex mishandled your dispute, it can order Amex to refund you and correct its process.

Disputes for unauthorized charges and fraud

If someone else used your card without permission, the dispute process is the same, but Amex treats it as fraud rather than a merchant error. Report the unauthorized charge as soon as you notice it. Amex will investigate whether the transaction matches your spending pattern and whether the merchant's records show the card was present or the cardholder's name was verified.

Amex may also ask you to confirm whether you recognize the merchant or the location where the charge occurred. If you were traveling, Amex might ask for your travel dates. If the charge happened online, Amex may ask whether you recognize the website or email address associated with the transaction.

For fraud disputes, Amex often credits your account when ready while investigating, because the liability for unauthorized charges typically falls on Amex or the merchant, not you. Once the investigation closes, the credit becomes permanent if Amex determines the charge was fraudulent.

Disputes for billing errors and subscription cancellations

Billing errors — such as being charged twice for one purchase or charged the wrong amount — are among the easiest disputes to win. Gather both the receipt showing what you agreed to pay and the statement showing what Amex charged. If the amounts do not match, Amex usually credits the difference when ready.

Subscription cancellations are more complex. If you cancelled a subscription and the merchant continued charging you, you will need proof of cancellation. This might be a confirmation email from the merchant, a screenshot of your account settings showing the subscription is inactive, or a dated email exchange with customer service. Without this proof, the merchant can claim you never cancelled and the charges were valid.

If the merchant's cancellation process was unclear or you cancelled verbally by phone, document that in your dispute. Tell Amex exactly when you called, what you said, and what the representative told you. Amex will contact the merchant to verify whether they have a record of the cancellation call.

Prevent disputes before they happen

Many disputes can be avoided by checking your statement regularly and catching problems early. Review your Amex statement as soon as it arrives — most people wait until they need to pay the bill. If you spot a charge you do not recognize, contact the merchant first before filing a dispute with Amex. The merchant may reverse the charge when ready, which is faster than a formal dispute.

For subscriptions and recurring charges, set a calendar reminder to check that you are still using the service and that the amount has not changed. Many people forget about free trials that convert to paid subscriptions, or services they signed up for once and forgot about. Cancelling before the charge hits your statement avoids the dispute process entirely.

Keep receipts and confirmation emails for major purchases, especially online. If a problem arises weeks later, you will have the documentation ready. For services, save any emails about refund policies, cancellation terms, or delivery dates — these become crucial if you need to dispute later.

Frequently Asked Questions

How do I report a dispute if I do not have online access to my account?

Call the number on the back of your American Express card and speak to a representative. They can file the dispute over the phone and will send you written confirmation by mail. You can also mail a written dispute to the address Amex provides on your statement, but calling is faster because Amex can answer questions about what documentation you need.

Will I lose access to my card while the dispute is being investigated?

No. American Express does not freeze or cancel your card during a dispute investigation. You can continue using it for new purchases. If Amex credits your account provisionally, that credit is available to use when ready, though it may be reversed if the merchant later provides evidence that the charge was valid.

What if the merchant goes out of business before Amex investigates?

Amex will still investigate, but the merchant will not respond. When a merchant does not respond to Amex's inquiry within the investigation period, Amex typically rules in your favor by default. The credit will be applied to your account. You will not recover money from the merchant, but you will not be charged for the transaction.

Can I dispute a charge if I am unhappy with the quality of what I received?

This depends on what you agreed to. If the merchant delivered exactly what was promised — even if you did not like it — Amex will likely deny the dispute. However, if the merchant promised a specific quality or condition and delivered something materially different, you may have grounds for a dispute. Provide the original product description or advertisement and explain how what you received did not match.

How long does it take to get my money back after Amex approves my dispute?

If Amex credits your account during the investigation, the money is available when ready. If Amex credits you after the investigation closes, the credit typically appears within one to two business days. Once credited, the money is yours permanently — Amex cannot reverse it unless it later discovers fraud on your part.