How to dispute a charge on your American Express card
You can dispute a charge on your American Express card by calling the number on the back of your card, logging into your online account, or using the American Express mobile app. American Express calls this process a chargeback or dispute claim. You have up to 120 days from the transaction date to file, though disputing sooner is better because American Express will freeze the disputed amount while they investigate.
The process itself is straightforward: you tell American Express what happened, they contact the merchant, and they either reverse the charge or explain why it stands. Most disputes are resolved within two to three weeks, though some take longer if the merchant contests the claim.
Key Takeaways
- You have 120 days from the transaction date to dispute a charge, but filing within 30 days gives American Express more time to investigate.
- American Express will freeze the disputed amount in your account while they investigate, so you do not have to pay that portion of your bill.
- You can start a dispute by phone, through your online account, or through the mobile app — all three routes lead to the same investigation.
- Most disputes are resolved in two to three weeks, but contested claims can take 60 days or longer.
- You will need the transaction date, merchant name, and a clear explanation of why the charge is wrong.
Disputing through your online account or mobile app
Log into your American Express account at americanexpress.com or open the mobile app. Go to your transaction history or recent charges. Find the charge you want to dispute and select it. You will see an option to report the transaction as fraudulent, unauthorized, or incorrect. Click that option and follow the prompts.
American Express will ask you to describe what happened. Be specific: if the merchant charged you twice, say that. If you never received the item, say that. If the amount is wrong, explain what you were charged versus what you agreed to pay. The more detail you provide, the faster they can investigate. After you submit, American Express will send you a confirmation number and a timeline for resolution.
Disputing by phone
Call the number on the back of your American Express card. Tell the representative you want to dispute a charge. Have the transaction date, merchant name, and the amount ready. The representative will ask you to describe what happened and will take notes. They will tell you the next steps and give you a reference number.
Phone disputes take the same amount of time as online disputes — American Express does not resolve them faster because you called. However, some people prefer the phone route because they can ask questions as they go and get when ready confirmation that the dispute was filed correctly.
What American Express needs from you
At minimum, American Express needs the transaction date, the merchant name, the amount charged, and your explanation of why the charge is wrong. If the merchant charged you twice, you may need to show proof — a receipt, an email confirmation, or a bank statement showing both charges. If you never received an item, you may need to show that you contacted the merchant first and they did not respond.
American Express does not always require supporting documents upfront. They will ask for them if the merchant contests your dispute. If you have them, you can upload them when you file the dispute through your online account, which can speed up the investigation.
The difference between fraud, unauthorized charges, and merchant errors
American Express handles three types of disputes differently. A fraudulent charge is one made by someone who stole your card number or account information — you did not authorize it and did not receive the item or service. An unauthorized charge is similar but usually means someone with physical access to your card used it without permission. A merchant error is a charge you authorized but the merchant got wrong — they charged you twice, charged the wrong amount, or charged you after you cancelled.
The investigation process is the same for all three, but the outcome can differ. Fraudulent and unauthorized charges are almost always reversed. Merchant errors are reversed if you can show the merchant made the mistake. If you authorized the charge and received what you paid for, but you straightforward changed your mind, American Express will not reverse it — that is a return or refund issue between you and the merchant, not a dispute.
What happens while your dispute is being investigated
American Express will credit the disputed amount back to your account when ready or within a few days. You will not have to pay that portion of your bill while they investigate. The charge will show as disputed in your transaction history. American Express will contact the merchant and ask them to provide proof that the charge was valid — a signed receipt, a delivery confirmation, or a record that you used the service.
The merchant has a set amount of time to respond, usually 10 to 30 days depending on the type of dispute. If they do not respond or cannot provide proof, American Express will reverse the charge permanently. If they do respond with proof, American Express will review it and decide whether to uphold or overturn your dispute. You will receive written notice of the outcome.
What to do if the merchant contests your dispute
If the merchant provides evidence that contradicts your claim, American Express will tell you and give you a chance to respond. This is where supporting documents matter. If you said you never received an item, show proof that the tracking number shows it was not delivered to your address, or show an email from the merchant saying the item is out of stock. If you said you were charged twice, show both charges on your statement.
You have a important date to submit your response — American Express will tell you what it is. If you miss it, American Express will side with the merchant. If you submit evidence that is stronger than the merchant's, American Express will reverse the charge. If the evidence is mixed, American Express will make a judgment call based on what is more likely.
Frequently Asked Questions
Can I dispute a charge if I authorized it but changed my mind?
No. If you authorized the charge and received the item or service, that is a return or refund issue, not a dispute. Contact the merchant directly to ask for a return or refund. American Express will not reverse a charge just because you changed your mind.
What if the merchant says they already refunded me?
If the merchant issued a refund, it can take three to five business days to appear in your account, depending on your bank. Check your account in a few days. If the refund does not appear, ask the merchant for proof that they issued it — a confirmation number or a receipt showing the refund date. Then contact American Express with that proof.
Can I dispute a charge after 120 days?
No. American Express has a 120-day window from the transaction date. After that, you cannot file a dispute through American Express. Your only option is to contact the merchant directly and ask for a refund or to pursue the issue through your state's consumer protection agency or small claims court.
Do I have to pay my bill while the dispute is being investigated?
No. American Express will not require you to pay the disputed amount while they investigate. You should still pay any other charges on your bill to avoid late fees and interest.
What happens if American Express sides with the merchant?
If American Express decides the merchant's evidence is stronger, they will reverse the credit they gave you and the charge will stand. You will owe that amount. At that point, your only option is to contact the merchant directly and try to resolve it, or to pursue the issue outside of American Express.