How to Start a Dispute on Your Discover Card

Contact Discover directly by phone, mail, or through your online account to report an unauthorized or incorrect charge. Discover's fraud department is available 24/7 at the number on the back of your card. Have your card number, the transaction date, and the merchant name ready when you call. You can also file a dispute through your Discover account online by selecting the transaction and choosing "Report a Problem."

Discover will assign your dispute a reference number and send you written confirmation within one business day. This number tracks your case, so save it. The bank will typically place a temporary credit in your account while they investigate, though this is not may provide for all dispute types. The investigation itself takes up to 90 days, though many disputes resolve faster.

Key Takeaways

  • Report a dispute to Discover within 60 days of the charge appearing on your statement, or you lose the right to challenge it.
  • Unauthorized charges (fraud) and billing errors (wrong amount, duplicate charge, merchant error) follow different dispute paths and have different timelines.
  • Discover may credit your account temporarily while they investigate, but you may owe the money back if the merchant proves the charge was valid.
  • Keep all documentation—receipts, emails, correspondence with the merchant—because Discover will ask for evidence to support your dispute.

Unauthorized Charges vs. Billing Errors

An unauthorized charge is a transaction you did not make and did not permit. This includes fraud, identity theft, or a stolen card number. Report unauthorized charges as soon as you notice them. Discover's fraud liability policy limits your responsibility to $50 per card, and many cases result in $0 liability if you report promptly.

A billing error is a charge that you authorized but the merchant processed incorrectly—the wrong amount, a duplicate charge, a charge posted to the wrong date, or a charge for something you returned. Billing error disputes follow the Fair Credit Billing Act (FCBA) rules, which give you 60 days from the statement date to report the problem. Discover must acknowledge your dispute in writing within 30 days and complete their investigation within two billing cycles (usually 60 days).

Merchant disputes—disagreements over the quality of goods or services—are harder to win through Discover. These are not billing errors under the FCBA. You may have better luck contacting the merchant directly to request a refund or chargeback, or disputing through a different method if the merchant refuses.

What Documents You Need to Gather

Before you file, collect anything that supports your version of events. For unauthorized charges, gather any evidence that you did not make the purchase: a statement showing you were in a different location, emails proving you never received the item, or a police report if your card was stolen. For billing errors, keep the original receipt showing what you were charged, your statement showing the incorrect charge, and any correspondence with the merchant about the error.

If you returned an item, save the return receipt or tracking number showing the merchant received it back. If the merchant promised a refund, save emails or text messages documenting that promise. Discover will ask for this evidence, and having it ready speeds up the investigation. If you cannot find the original receipt, a statement showing the charge and the merchant name is a starting point.

The Dispute Investigation Timeline

Discover must acknowledge your dispute in writing within 30 days. They will contact the merchant's bank (the acquiring bank) and request documentation of the transaction. The merchant then has a chance to respond with proof that the charge was valid—a signed receipt, delivery confirmation, or your own prior communication authorizing the charge.

The full investigation takes up to 90 days from the date Discover receives your dispute. During this time, Discover may place a temporary credit in your account, but you are not may provide to keep it if the merchant proves the charge was legitimate. Once Discover reaches a decision, they will notify you in writing with the outcome and the reason. If you win, the charge is removed and any temporary credit becomes permanent. If you lose, the charge stays and any temporary credit is reversed.

What Happens If Discover Rules Against You

If Discover's investigation concludes the charge was valid, you owe the full amount. Any temporary credit they placed in your account will be removed. This does not mean you have no other options—you can still contact the merchant directly to negotiate a refund, request a return, or dispute the quality of the service. You can also file a complaint with the Consumer Financial Protection Bureau (CFPB) if you believe Discover did not investigate fairly.

If the dispute involved a merchant error (wrong amount, duplicate charge), ask Discover to provide you with the merchant's response so you can see exactly what they claimed. Sometimes the merchant's own documentation contradicts their position, and you can use that to push back. Request that Discover reopen the dispute if you find new evidence.

Preventing Future Disputes

Review your Discover statement every month and report any unrecognized charge within 60 days. Set up account alerts through your Discover app to notify you of large purchases or transactions in unfamiliar locations. This catches fraud early and gives you more time to dispute.

For online purchases, use a unique password for each merchant account and enable two-factor authentication where available. Keep receipts for major purchases and take screenshots of order confirmations. If you are returning an item, request a return authorization number and keep the tracking information until the refund posts to your account. These habits reduce the number of disputes you need to file in the first place.

Frequently Asked Questions

What is the important date to report a dispute to Discover?

You have 60 days from the date the charge appears on your statement. After 60 days, Discover cannot investigate the dispute under the Fair Credit Billing Act. Mark your calendar when you receive your statement so you do not miss the window.

Will Discover refund me while they investigate?

Discover may place a temporary credit in your account, but this is not automatic and depends on the type of dispute. You are not may provide to keep the credit if the merchant proves the charge was valid. Do not spend money assuming the temporary credit is permanent.

Can I dispute a charge if I authorized the transaction but changed my mind?

No. Buyer's remorse is not a valid reason for a dispute. You can only dispute unauthorized charges, billing errors, or charges for items you returned. Contact the merchant directly to request a refund or return.

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

Discover will still investigate the charge, but a closed merchant makes it harder to prove the transaction was invalid. If the merchant is unreachable, Discover may rule in your favor based on the merchant's failure to respond. Keep any evidence that the business is closed.

Can I dispute the same charge twice?

No. Once Discover makes a final decision, that dispute is closed. You can request that Discover reopen it only if you have new evidence that was not available during the first investigation. Submitting the same evidence twice will not change the outcome.