Amex Chargeback Time Limits for Merchants Explained
Amex gives you 20 days to answer a dispute and the cardholder up to 120 days to file. Here is what each clock means for you.
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The Amex chargeback time limit, in plain terms
Every American Express dispute runs on a clock. The cardholder gets one window to file. You, the merchant, get a shorter one to answer. Miss yours and you lose the money even if your proof was strong. Here is how each clock works.
Cardholder's time limit to dispute
An American Express cardholder, not the merchant, has up to 120 days from the transaction date to dispute a charge.
Some claims can run longer. A cardholder can have longer to dispute a charge for goods not received, returns or cancellations.
So do not assume an old sale is safe just because 120 days passed. The type of claim matters.
Merchant's time limit to respond
You have less time than the cardholder. A merchant has 20 days to respond to an Inquiry or Chargeback from American Express with supporting documents.
Your 20 days start once American Express contacts you with an Inquiry or a Chargeback. The clock does not wait for you to log in or ask questions. The day Amex sends the notice, the count begins.
An Inquiry is Amex asking you for facts before it files anything. Treat it with the same urgency as a full Chargeback. To avoid a No reply or Insufficient reply Chargeback from American Express, a merchant should answer an Inquiry within 20 days.
A merchant should always answer an Inquiry from American Express by its reply due date. If you ignore the Inquiry, the next notice you get is a Chargeback that is harder to undo.
What happens when the merchant misses the deadline
If you send nothing, or send too little, Amex treats that as a failed reply. The Chargeback stands and the money stays gone. A late answer is often the same as no answer.
The cardholder keeps the credit. You also lose the sale amount, and the case fee in most cases. There is no reward for being one day late, so build a habit of checking your dispute notices daily.
Answered on time but the case moves on? Read what happens after you answer a chargeback to see the rounds that follow.
Exceptions to the standard time limits
The 20 day merchant window is the rule for Inquiries and Chargebacks, but the cardholder side has more give. As noted above, claims about goods not received, returns or cancellations can run past the usual 120 days.
If you cannot gather all your proof in time, send what you have that answers the claim. A partial reply that fits the reason code beats a perfect reply that arrives late.
Not sure what the notice is asking for? Start with how to read a chargeback notice and match your proof to the claim.
How Amex time limits compare to Visa and Mastercard
Each card network sets its own deadlines, and those rules come from the network, not from your bank. Amex runs its own dispute process from start to finish, since it is both the network and the issuer. That is why its notices and windows look different from the ones Visa and Mastercard send.
Visa and Mastercard disputes move between two banks, so their timelines have more steps and more rounds. If a Visa or Mastercard case pushes past the first reply, it can reach a stage called pre-arbitration.
Never borrow a deadline from one network for another. When an Amex notice arrives, work on Amex time. Twenty days to reply, and the clock is already running.