How to Dispute Fraudulent Transactions on Your Credit Card (2026 Guide)

Spotting an unauthorized charge on your credit card statement can happen to anyone. To dispute it effectively, start by reviewing your recent transactions to rule out legitimate purchases. Next, contact the merchant if possible. Then, file the dispute with your card issuer promptly--within 60 days of the statement date showing the error for federal protections, or up to 120 days from the purchase or transaction date depending on your card network. Provide details like the transaction date, amount, and why it qualifies as fraud or an error. Many issuers offer online portals for quick submission, followed by a mailed letter for added legal safeguard. Expect provisional credits from some issuers, like Wells Fargo within 10 days. Card networks such as Visa and Mastercard allow 120 days from purchase, while American Express and Discover use 120 days from the transaction date. Acting fast maximizes your chances of recovery without merchant involvement.

This guide outlines the process, timelines, and network-specific details to help you reclaim your funds.

Understand Your Rights and Dispute Timelines

Federal law provides key protections for credit card holders facing errors, including fraudulent charges. For the strongest legal coverage, lodge your dispute within 60 days of the statement date when the error first appeared, as noted by Experian. This timeline ties directly to when you receive the bill or statement listing the charge.

Card networks extend deadlines in some cases. Visa and Mastercard permit chargeback claims within 120 days of the purchase date. American Express and Discover typically allow 120 days after the transaction date. These longer windows apply to network rules but do not always override the 60-day federal trigger based on the statement date. The difference matters: a charge appearing on a later statement could shorten your effective window under federal rules, even if the network allows more time from the original transaction. Always check your card's terms, as issuers may align with network policies or add their own processes. Missing these deadlines risks liability for the charge.

Step-by-Step Process to Dispute Fraudulent Charges

Follow this workflow to build a strong claim and protect your rights.

1. Review and rule out other possibilities: Examine your statements, emails, and accounts for unrecognized charges. Confirm it is not a subscription renewal, shared account activity, or billing descriptor mismatch before proceeding. First rule out other possibilities before disputing an unrecognized charge, as advised by Experian.

2. Contact the merchant first: Reach out to the seller via phone, email, or their dispute portal. Explain the issue and request a refund. Document all communications, including dates, names, and responses. If they refuse, fail to respond, or cannot resolve it, move to your issuer.

3. Initiate the dispute with your card issuer: Use their app, online portal, or phone line. Provide the transaction details (date, amount, merchant name), evidence like screenshots, and select the reason--such as fraud, authorization errors (e.g., card used without permission), processing errors (duplicate or incorrect charge), or fulfillment errors (item not delivered as promised), per guidance from chargebacks911.

4. Send a follow-up letter by mail: Even after a digital dispute, mail a written notice to the issuer's dispute address (found on their site or statement). Include the same details and keep copies. This step ensures federal regulation protections, as recommended by Experian.

5. Monitor and follow up: Track the claim status online or by phone. Issuers must investigate and respond within 30 days, with updates along the way. If denied, appeal with more evidence.

This process positions you for success by addressing common pitfalls early.

Timelines and Processes by Card Network and Issuer

Different networks and issuers handle disputes with varying timelines and steps. Use the table below to match your card type.

Select your approach based on your card: Visa or Mastercard users have 120 days from purchase, while Amex or Discover extend to 120 days from the transaction. Wells Fargo provides provisional credit within 10 days of the claim. Always start with your issuer's tools for the fastest path.

FAQ

How soon must I dispute a fraudulent charge for federal protection?

File within 60 days of the statement date when the error appeared to qualify for federal law protections.

What's the difference between 60-day and 120-day dispute timelines?

The 60-day window starts from the statement or bill date for federal coverage, while 120 days ties to the purchase date (Visa/Mastercard) or transaction date (Amex/Discover) under network rules.

Should I contact the merchant before filing a chargeback?

Yes, attempt resolution with the seller first. If unsuccessful, proceed with your issuer.

Do I need to send a follow-up letter after disputing online?

Yes, mailing a follow-up ensures federal regulation safeguards, even after digital submission.

What are valid reasons for a fraudulent transaction dispute?

Legitimate claims include fraud, authorization errors, processing errors, or fulfillment errors.

How quickly does Wells Fargo provide provisional credit?

Wells Fargo issues provisional credit within 10 days of the claim.

Gather your statements and evidence now, then contact your issuer or merchant today to start the process.