American Express · Card Member Disputes

Amex Reason Code C05: Goods/Services Cancelled

Updated November 6, 2026 · Part of the American Express reason code guide

Amex reason code C05 applies when a Card Member says they cancelled an order, booking or service and you didn't issue the credit they expected. To win, show the cancellation came after shipment or outside your disclosed cancellation policy, that the service was used, or that the credit was already processed.

What Amex reason code C05 means

C05 is for one-time purchases the Card Member says they cancelled: an order cancelled before shipping, a booking cancelled before the date, a service cancelled before it started. The claim is that the cancellation should have produced a credit, and it didn’t.

Recurring subscriptions have their own code, C28. Lodging no-shows and CARDeposits use C18.

You’ll typically get an inquiry first. The timeline of events (order, cancellation request, shipment or service date) usually decides the case, so build it before you reply.

Common causes

  • Customer cancels by email after the order already shipped
  • Cancellation request received, acknowledged, never processed
  • Non-refundable deposits or cancellation fees the Card Member didn’t notice
  • Custom or made-to-order goods where production started before the cancel
  • Event, class or appointment cancellations close to the date, under a strict policy

Evidence that wins a C05 dispute

  1. The timeline: order timestamp, cancellation request timestamp (or absence of one), ship date or service date.
  2. Cancellation policy and disclosure: the terms, including fees or non-refundable portions, and proof the Card Member accepted them at checkout.
  3. Shipment proof if the order left before the cancel request: tracking and delivery scan.
  4. Service delivery or use: attendance, logins, appointment records, or work product delivered.
  5. Credits issued: any partial refund you applied under the policy, with date and reference.
  6. Communication: the cancellation request itself and your reply.

Build the timeline first

C05 cases are usually decided by a few timestamps. Lay them out in the rebuttal:

Event Example
Order placed March 1, 10:14
Order shipped March 2, 16:40 (tracking attached)
Cancellation request received March 4, 09:02
Delivered March 5

When the request came after shipment, the case becomes a question of whether the Card Member used your return process, and you should show the return instructions you sent.

How to prevent C05 disputes

  • Give customers a self-serve cancel button for orders that haven’t shipped.
  • Send an automatic cancellation confirmation, and refund at the same moment.
  • Show cancellation fees and cutoffs next to the purchase button for bookings and custom orders.
  • When an order ships before a cancel request is processed, email the customer the return steps right away.

Should you fight or accept?

Fight when the cancellation came after shipment or after the service was delivered, or when a clearly disclosed policy limits the credit and you applied it correctly.

Accept when you acknowledged the cancellation and simply didn’t refund, or when your policy wasn’t disclosed before purchase. Those are hard to win and easy to prevent.

Frequently asked questions

What is Amex reason code C05?
Amex reason code C05, Goods/Services Cancelled, is a Card Member dispute. The Card Member says they cancelled the purchase or service, but the merchant hasn't credited their American Express card.
How is C05 different from C28?
C05 covers cancellation of a one-time order, booking or service. C28 covers recurring billing that continued after the Card Member says they cancelled the subscription.
What if the order had already shipped when the customer cancelled?
Show the ship date and tracking against the time of the cancellation request, plus your cancellation policy. Once an order ships, the issue usually becomes a return, so point to your return process and whether the Card Member used it.

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