Quick answer: If an American Express card is lost or stolen, report it immediately using the Amex app, online account or the official card-support number printed on your statements. Reporting the card prevents further use of that card; it does not necessarily close the credit-card account.
Use the official account or provider handling the financial transaction. A pending transfer, a completed card payment, an active loan and an insurance policy are legally and operationally different.
Step-by-step cancellation instructions
- Sign in to the American Express app or website using your account credentials.
- Locate the affected card and the Report Lost or Stolen option, if shown.
- Follow identity-verification steps and mark whether the card is lost or stolen.
- Request a replacement card and review recent transactions for unauthorized charges.
- Keep confirmation and update any recurring merchants after the replacement card is issued.
Understand the transaction or account type
Replacing a compromised card is different from permanently closing an American Express credit account. Depending on the product, Amex may update some recurring merchants automatically; you should still check critical payments and mobile wallets. Report unfamiliar transactions promptly through the official dispute channel.
Fees, refunds and effective dates
Lost/stolen reporting and any liability for unauthorized charges are subject to American Express policy and applicable law. Do not assume a pending legitimate payment vanishes when a physical card number is replaced. Ask support whether pending authorizations or digital wallet credentials need attention.
If cancellation fails or the option is missing
If you cannot access the account, call the number shown on an official Amex statement or its website. Avoid posting your full card number in emails or using numbers from unsolicited search ads.
Verify the transaction or policy status
For financial products, a submitted request is not the same as a completed reversal or termination. Record the effective date, pending transactions and any follow-up needed to prevent a coverage gap or unsettled balance. Use official secure channels for identity verification.