Amex Chargebacks: A Merchant's Guide to Disputes
When an Amex Card Member disputes a charge, your shop gets an Inquiry or a Chargeback. Here is how each stage works, what the codes mean, and how to answer on time.
A Card Member disputes a charge you put through with American Express. That dispute starts a process that can end with your account being debited. This page walks through the American Express chargeback process as the merchant sees it, using Amex's own guide to explain each stage.
What an American Express chargeback is
An American Express chargeback is a disputed charge that gets pulled back from your account. Amex's guide says Card Members can dispute a charge for lots of reasons. The list runs from fraud to a canceled order to a duplicate billing.
The first part of the process does not involve you. Amex's guide says it works directly with the Card Member and tries to resolve the case before reaching out to the merchant. Before anything lands on your desk, Amex and the Card Member try to settle the matter between themselves.
If that talk settles it, you never hear about it. If it does not, your turn comes. According to Amex's guide, when the case needs more detail, the merchant gets one of two things: an Inquiry or a Chargeback.
The Amex dispute process from start to finish
The process has a clear order.
First, the Card Member disputes the charge with Amex. Amex works with the Card Member directly. It tries to resolve the case using what it has on file.
Next, when the case still needs more detail, one of two notices reaches you: an Inquiry or a Chargeback. Which one you get depends on how the case stands.
Third, you respond. A merchant gets an Inquiry when a Card Member disputes a charge that cannot be resolved with the documents on file. If the Card Member gives enough information, the merchant's account may be debited upfront.
Fourth, the case resolves. If a merchant's reply settles the dispute on time, there is no Chargeback. If one already happened, it can be undone. After a Chargeback, the merchant can send supporting documents that might reverse it.
Inquiry vs. Chargeback: the two paths a merchant can face
The two paths work differently, and knowing which one you are on changes what you do next.
An Inquiry is a request for information. Amex asks you for documents before any money moves. Your reply either settles the case or it does not.
A Chargeback is the debit itself. The charge has been pulled from your account, and now you are fighting to get it back. A Chargeback is undone if the merchant's reply addresses the dispute successfully and on time.
The worst outcome sits at the end of both paths. Amex's guide says the merchant's account will be debited if the merchant does not reply in time or with the requested documentation.
How to respond to an Amex Inquiry or Chargeback
Amex's guide recommends answering disputes through its Merchant Account online, which it calls the best route. A merchant can answer American Express disputes online and upload supporting documents from a computer. An American Express online account shows each dispute's details, deadlines and response options in one place.
If you cannot respond online, there is another route. A merchant can also fax or mail a claim form to American Express with the Inquiry case number and Merchant number. Amex asks for the Inquiry number and Merchant number on each page a merchant mails or faxes. It uses one mailing address for fraud disputes and a different one for other disputes, so check which one your case needs.
Sending the reply on time is only half the job. What you put inside it carries the same weight. A merchant's supporting documents should include a copy of the charge record or credit record. Amex tells merchants to review the entire claim and address the specific dispute reason with their documents. A good reply explains the documents, addresses the specific dispute reason and describes the steps taken to resolve it.
A reply to an Inquiry should fully address the dispute reason and every claim the Card Member made. A stack of papers that never speaks to the claim is not a reply.
The 20-day response window and what happens if you miss it
The clock is short. To avoid a No reply or Insufficient reply Chargeback from American Express, a merchant should answer an Inquiry within 20 days.
What happens if the deadline passes? If a merchant does not reply to American Express in time or with the requested documents, its account is debited. If the merchant does not reply in time or with the requested documents, the Chargeback stands.
So the 20 days are not a soft target. They are the line between keeping the money and losing it.
An online account helps you not miss that line. An American Express online account can send email alerts for new Inquiries, new Chargebacks, case updates and urgent cases.
Amex inquiry codes you are likely to see
Each Inquiry arrives with a code that tells you why the Card Member disputed the charge. Here are the ones Amex's guide names.
Some codes describe the claim itself. Inquiry Code 154 is named Canceled, and the guide says the Card Member claims the item or service was canceled or refused. Inquiry Code 158 is named Return, and the guide says the Card Member requested credit for an item that was returned to the business. Inquiry Code 173 is named Duplicate/Multiple Billing, and the guide says the Card Member requested credit for a duplicate billing.
Others point at billing errors. Inquiry Code 680 is for Overcharge disputes. Inquiry Code 684 is named Paid Direct, and the Card Member claims the charge was paid with another form of payment. Inquiry Code 691 is named Signed support and/or Itemization, and the Card Member is requesting support and itemization.
One code covers a rental claim. Inquiry Code 693 is named Vehicle Rental and capital damages, and the Card Member has questioned the charge for damages, theft or loss.
A few codes overlap in name. Amex's guide says inquiry code 021 is called Canceled, and inquiry code 024 is called Damaged or Defective. So does inquiry code 059. Inquiry Code 062 is called Credit Posted As Charge. Inquiry Code 063 is called Dissatisfied.
Three codes cover No Knowledge and Fraud disputes. Inquiry Code 127 is called No Knowledge, and Inquiry Code 176 is for No Knowledge disputes. Inquiry Code 193 is for Fraud disputes. On the cardholder side, that same claim is what American Express credit card frauds are about.
Amex chargeback codes you are likely to see
Chargeback codes follow a letter and number pattern.
Codes A01, A02 and A08 deal with authorization. Amex's guide says chargeback code A01 means the charge amount exceeds the authorization amount. Code A02 means there was no valid authorization. The guide lists chargeback code A08 as an expired authorization approval. Amex's guide says merchants should not submit a charge if the authorization approval was declined.
Several C codes deal with credits, returns and cancellations. Amex's guide says chargeback code C02 means credit not processed. Code C04 means goods or services were returned or refused. Code C05 means goods or services were canceled. The guide says chargeback code C14 means the charge was paid by other means. Code C18 covers a no show or a canceled CARDeposit. Chargeback Code C28 covers canceled recurring billing.
Two C codes cover the product itself. Chargeback Code C31 covers goods or services not as described. Chargeback Code C32 covers goods or services that are damaged or defective.
One M code covers rentals. Amex's guide says chargeback code M10 covers vehicle rental disputes about capital damages, theft or loss of use.
How to prevent American Express chargebacks
Amex's guide gives merchants a list of habits that can help prevent disputes.
Make your charges easy to recognize. Amex's guide says merchants can help prevent disputes by making sure Card Members can recognize their charges. The guide says merchants should use charge descriptors that clearly describe the purchase.
Put your policies in writing and in sight. The guide says to provide written cancellation, return, refund, and special terms policies at time of purchase. It also says merchants should post cancellation, return and refund policies where they can be seen before the transaction. And it says merchants should always provide the Card Member with a cancellation number or confirmation.
Keep proof of what you shipped and what they agreed to. The guide says to keep a record of consent and proof of delivery for orders that have shipped. The American Express guide says merchants should keep records that tie a Card Member's billing consent to the goods and billing terms.
Time your charges right. The guide says merchants should submit charges only after goods and services have been provided or shipped.
Some rules fit specific kinds of business. For in-person sales, the guide tells merchants to ask for identification as a fraud safeguard. For restaurants, the guide advises getting a signature from the Card Member on every charge. For businesses that bill on a recurring basis, the guide advises sending confirmation emails that spell out how often payments happen and how to cancel.
Where to find more Amex dispute resources
For merchants who want to go deeper, Amex's guide points to its Disputes Education Center webpage for further reading. That page is the place to go for detail beyond this overview.
If you sell to Amex Card Members, disputes will reach you eventually. The ones that hurt are the ones you never answered in time. Set up the email alerts, learn the codes that match your business, and keep the records that speak to each claim. A chargeback with Amex is a process with deadlines, not a mystery.
If you are on the other side of the counter, the same system looks different. A Card Member asking how long they have to dispute a charge is working against their own clock. And a plain guide to an Amex charge dispute from the cardholder's seat explains the same steps from the other end.