The bank investigates your claim, not the merchant
When you dispute a credit card charge, your card issuer — not the merchant — opens an investigation. You contact your bank or credit card company, describe why the charge is wrong, and they assign it a case number. The issuer then contacts the merchant's bank to request documentation: the signed receipt, proof of delivery, or evidence the service was completed as promised. You are not negotiating directly with the store or company that charged you.
The investigation typically takes 30 to 60 days, though some banks complete it faster. During this time, the issuer may provisionally credit your account while they gather evidence — meaning you see the money back, but the case remains open. If the merchant provides proof the charge was legitimate, the issuer can reverse that credit and you owe the money again.
Key Takeaways
- Your card issuer investigates the dispute, not you — they contact the merchant's bank and request proof the charge was valid.
- The investigation window is typically 30 to 60 days, and you may receive a provisional credit while it is ongoing.
- Common reasons that succeed include unauthorized charges, charges for services never received, and amounts that do not match what you authorized.
- If the merchant provides proof of delivery or a signed receipt, the issuer will likely rule against you and reverse any provisional credit.
- You have the right to submit written evidence supporting your claim, and the issuer must consider it before closing the case.
What counts as a valid dispute reason
The strongest disputes fall into a few clear categories. Unauthorized charges — someone used your card number without permission — are the easiest to win because you can state you did not make the purchase. Services not received — you paid for a haircut that was cancelled, or a repair that was never done — also tend to succeed if you can show the merchant did not fulfill their end.
Billing errors are disputes where the amount charged does not match what you authorized. If you approved a $50 repair and were charged $150, that is a clear discrepancy. Duplicate charges — the same transaction posted twice — are straightforward to prove if your statement shows two identical line items on the same day.
Weaker disputes include disagreements over quality ("the haircut was bad") or changed your mind after purchase. Merchants can defend these by showing you received what you paid for, even if you were unhappy with it. The dispute process is not a refund mechanism for buyer's remorse.
How the merchant responds to your dispute
Once your bank contacts the merchant's bank, the merchant has a window — usually 7 to 10 days — to respond with evidence. They typically submit a signed receipt showing your authorization, a tracking number proving delivery, or documentation that the service was completed. If the merchant does not respond within the important date, your dispute is more likely to be ruled in your favor.
If the merchant does respond with proof, your bank reviews it against your claim. A signed receipt with your name or card number, or a delivery confirmation showing the package arrived at your address, is difficult to dispute. The issuer will likely close the case against you and reverse any provisional credit. You then have the right to submit a counter-argument in writing, but the merchant's documentation usually carries more weight than your word alone.
What happens if you win the dispute
If the issuer rules in your favor, the charge is removed from your account permanently and any provisional credit becomes final. You keep the money. The issuer notifies the merchant's bank of the decision, which appears on the merchant's processing account as a chargeback — a loss they must absorb. This is why merchants take disputes seriously and often respond quickly with documentation.
A single chargeback does not usually affect your account, but repeated disputes can flag you as a high-risk customer. Some card issuers will close your account if you file too many disputes, even if you win them. Merchants may also refuse to serve you in the future if they see a pattern of chargebacks.
What happens if you lose the dispute
If the issuer rules against you, any provisional credit is removed from your account and you owe the full amount again. The charge reappears on your statement. You cannot dispute the same charge twice with the same bank, but you may have other options: if the merchant violated a law or your rights, you could pursue the matter through small claims court, or file a complaint with your state's attorney general or the Consumer Financial Protection Bureau.
A lost dispute does not damage your credit score directly, but if the charge remains unpaid and goes to collections, it will. Pay the charge or work out a payment plan with the merchant to avoid that outcome.
How to file a dispute with your card issuer
Contact your card issuer by phone, mail, or through their online portal — check your statement or the back of your card for the dispute number. Have your statement ready and be prepared to describe the charge, the date it posted, and why it is wrong. The issuer will ask for specific details: the merchant's name, the amount, and whether you authorized any charge at all or just a different amount.
Put your dispute in writing if possible — a letter or email creates a record. Include your account number, the disputed transaction date and amount, the merchant name, and a clear explanation of the problem. Mail it to the address listed on your statement under "disputes" or "billing inquiries," or submit it through your online account if that option is available. Keep a copy for your records and note the date you sent it.
The issuer must acknowledge your dispute in writing within 30 days and tell you the outcome within 60 days. If they need more time, they can extend the investigation to 90 days, but they must notify you and explain why. Do not ignore requests for additional information — if the issuer asks for proof or clarification and you do not respond, they may close the case against you.
When a dispute might not work
Disputes are harder to win when you authorized the charge but are unhappy with the result. If you signed a receipt, the merchant has proof you knew the amount. If you received a package and signed for it, a delivery confirmation works against you. If you used a debit card instead of a credit card, the dispute process is slower and offers less protection — debit card disputes can take longer to investigate and you may not receive a provisional credit.
Disputes also fail when the merchant can show you received what you paid for. A restaurant charge is difficult to dispute after you ate the meal. A digital read or software purchase is hard to dispute if you accessed the file. The issuer will ask: did the merchant deliver the goods or service? If yes, the charge is usually valid even if you changed your mind.
Frequently Asked Questions
How long does a dispute take to resolve?
Most disputes are resolved within 30 to 60 days. Your issuer must acknowledge the dispute within 30 days and provide a decision within 60 days. Some banks complete it faster, and some extend to 90 days if they need more time to gather evidence. You may receive a provisional credit within a few days while the investigation is ongoing.
Can I dispute a charge if I signed the receipt?
A signed receipt makes disputes much harder to win because it shows you authorized the transaction. You can still dispute if the amount charged differs from what you signed for, or if the service was never delivered despite your authorization. But if you signed for the exact amount and received what you paid for, the merchant's documentation will likely prevail.
What if the merchant goes out of business before the dispute is resolved?
The investigation continues even if the merchant closes. Your bank will attempt to contact the merchant's bank and request documentation. If the merchant cannot be reached or no longer has records, your dispute is more likely to be ruled in your favor. The issuer may rule based on the merchant's failure to respond rather than on the evidence itself.
Can I dispute a charge on a debit card the same way as a credit card?
Debit card disputes follow similar steps but offer less protection. You must report the dispute quickly — usually within 60 days — and the investigation may take longer. You may not receive a provisional credit while the case is open, meaning you lose access to that money until the dispute is resolved. Credit cards offer stronger protections under federal law, which is one reason they are safer for large purchases.
What happens if I dispute a charge and then the merchant refunds me?
Contact your card issuer when ready and withdraw the dispute. If the merchant has already refunded you and the dispute is still open, the issuer may rule in your favor anyway, resulting in a chargeback against the merchant even though you received your money back. This can damage your relationship with the merchant and may lead them to refuse service in the future. Withdrawing the dispute prevents that outcome.