You can dispute a charge by contacting Discover directly, and the card issuer will investigate on your behalf
When you spot a charge on your Discover statement that you don't recognize or believe is wrong, you have the right to dispute it. Discover will assign someone to look into the transaction, contact the merchant, and either reverse the charge or explain why it stands. The process typically takes 30 to 90 days from the moment you file the dispute.
You don't need a lawyer or a third party to start this process — you contact Discover yourself, either by phone, through your online account, or by mail. The sooner you report the charge, the sooner the investigation begins. Most disputes are resolved in your favor if the merchant can't prove the transaction was legitimate.
Key Takeaways
- Report a disputed charge to Discover within 60 days of the statement date on which it appears, though reporting sooner gives you more time for investigation.
- You can file a dispute by calling the number on the back of your card, logging into your online account, or mailing a written statement to Discover's dispute address.
- Discover will temporarily credit your account while investigating, so you won't lose the money during the process.
- The merchant has the chance to respond with proof the charge was valid, such as a signed receipt or delivery confirmation.
- If Discover rules in your favor, the charge is removed permanently; if the merchant proves the charge was valid, it goes back on your account.
When to dispute a charge and what counts as a valid dispute
A valid dispute falls into one of these categories: you didn't authorize the transaction, the merchant charged you twice for the same purchase, the amount charged doesn't match what you agreed to pay, or you returned an item but the refund never posted. You can also dispute if you ordered something and it never arrived, or if what arrived was significantly different from what was described.
Unauthorized charges — ones you didn't make or approve — are the most straightforward disputes. If your card number was stolen or someone used your account without permission, report it when ready. Discover will investigate and, in most cases, remove the charge.
Don't wait to dispute a charge. The sooner you report it, the more time Discover has to investigate before the 60-day window closes. If you report on day 59, the investigation still moves forward, but you've left little room for back-and-forth with the merchant.
How to file a dispute through your Discover account
The fastest way to dispute a charge is through your online Discover account. Log in, find the transaction in your statement, and look for a "Dispute" or "Report as Disputed" button next to the charge. Click it and follow the prompts. Discover will ask you to describe what's wrong with the charge and select the reason from a list — unauthorized, duplicate, wrong amount, item not received, or item not as described.
Be specific when you describe the problem. Instead of writing "wrong charge," explain what happened: "I returned this item on March 15 and was told I'd receive a refund within 10 days, but it never posted." The more detail you provide, the stronger your case.
After you submit the dispute online, Discover sends you a confirmation number. Write this down or take a screenshot. You'll use it to track the dispute's progress and to reference it if you need to follow up.
Disputing by phone or mail if you can't use your online account
If you prefer to dispute by phone, call the number on the back of your Discover card and ask to speak with someone about disputing a charge. Have your statement in front of you so you can provide the transaction date, merchant name, and amount. The representative will walk you through the dispute process and assign you a case number.
To dispute by mail, write a letter to Discover's dispute department. Include your account number, the transaction date, the merchant name, the amount, and a clear explanation of why you're disputing it. Mail it to the address Discover provides for disputes — you can find this on your statement or by calling the number on your card. Keep a copy of your letter and send it certified mail so you have proof it arrived.
Whether you call or mail, you'll receive a case number and a timeline for when you can expect a decision. Discover will send you updates by mail or through your online account as the investigation progresses.
What happens while Discover investigates your dispute
Once you file a dispute, Discover places a temporary credit in your account for the disputed amount. This means you get the money back while the investigation happens — you won't be out the funds. This credit is provisional; if Discover rules against you, the charge goes back on your account.
Discover contacts the merchant and asks them to provide proof the charge was valid. The merchant might send a signed receipt, a delivery confirmation, or evidence you received the item. If the merchant doesn't respond within a set timeframe, Discover usually rules in your favor by default.
You may also be asked to provide additional information — for example, proof that you returned an item, or documentation that the charge was unauthorized. Respond to any requests from Discover as quickly as you can. The faster you provide what they ask for, the faster the investigation closes.
What happens when the investigation ends
Discover will notify you of the outcome in writing, either by mail or through your online account. If Discover rules in your favor, the temporary credit becomes permanent and the charge is removed from your account. You're done.
If Discover rules against you — meaning the merchant proved the charge was valid — the temporary credit is removed and the charge goes back on your statement. You'll owe it again. This happens when the merchant provides a signed receipt, a delivery confirmation showing the item arrived at your address, or other proof that the transaction was legitimate.
If you disagree with Discover's decision, you can request that they reconsider, though this is uncommon. Ask Discover what the merchant's evidence was and whether you can submit additional information that contradicts it. A second review is possible but not may provide.
How to prevent unauthorized charges in the future
Monitor your statement regularly — at least once a month — so you catch fraudulent charges quickly. Set up account alerts through your Discover account to notify you of large purchases or transactions from unfamiliar merchants. These alerts give you a heads-up if someone is using your card without permission.
Keep your card number find. Don't share it over email or text, and be cautious when entering it on websites. Use your card's virtual card number feature if Discover offers it — this generates a temporary card number for online purchases, so your real number isn't exposed to the merchant.
If your card is lost or stolen, call Discover when ready. They'll cancel the card and issue a replacement. Any fraudulent charges made after you report the card missing are Discover's responsibility to investigate, not yours.
Frequently Asked Questions
What if the merchant is out of business or won't respond to Discover?
If the merchant doesn't respond to Discover's inquiry within the investigation period, Discover typically rules in your favor and the charge is removed. The merchant's silence counts as an inability to prove the charge was valid. This usually takes 30 to 60 days.
Can I dispute a charge I authorized but later regretted?
No. If you authorized the charge and received what you paid for, it's not a valid dispute reason. Buyer's remorse doesn't count. However, if the merchant misrepresented the item or you can show the item arrived damaged, that's a different story and may be disputable.
How long do I have to dispute a charge?
You have 60 days from the statement date on which the charge appears. If the charge shows up on your March statement, you must file the dispute by the end of May. After 60 days, Discover won't investigate, so report it as soon as you notice it.
Will disputing a charge hurt my credit score?
No. Disputing a charge doesn't affect your credit score. Your credit report only reflects whether you pay your bills on time and how much debt you carry. A dispute is a transaction investigation, not a missed payment or default.
What if Discover rules against me but I still think the charge is wrong?
You can request that Discover review the case again, though a reversal is unlikely if the merchant provided solid proof. Ask Discover to explain what evidence the merchant submitted. If you have contradicting evidence — such as proof the item never arrived or that you returned it — submit that to Discover and ask them to reconsider.