Reason code · American Express

Amex FR6: Partial Immediate Chargeback Program

FR6 means the Card Member disputed a charge, your account is in Amex’s Partial Immediate Chargeback Program, and the amount falls under the program’s threshold. Amex gives examples from $20 up to $250. Two responses apply.

What FR6 means

FR6 is the partial version of Amex’s immediate chargeback program. Amex’s guide says it arrives when the Card Member disputes a charge, your merchant account is enrolled in the Partial Immediate Chargeback Program, and the disputed amount is within the program’s threshold. Amex gives example thresholds of up to $20, $25, $50, $100 or $250.

In plain terms: under a set dollar amount, disputes on your account come straight back to you.

What the customer told Amex

It could be anything. FR6 isn’t tied to one kind of complaint. What triggers the code is your enrollment and the size of the charge.

Time limit

Amex’s guide gives Card Members (Amex’s word for cardholders) up to 120 days from the transaction date for most disputes. Program codes don’t change that window. They change what you can say back.

Your side of the clock is short. Amex’s own guide tells merchants to respond within 20 days. If you accept Amex through a processor such as Stripe or Square, the processor sets its own date, often a shorter one. The due date on your notice is the one that counts.

What proof matters

Amex’s reference guide lists two responses: proof you had not been placed in the Partial Immediate Chargeback Program at the time of the chargeback, or proof a refund directly offsetting the charge has already been processed. Also check the amount against your account’s threshold. A dispute above it shouldn’t carry this code.

Small charges add up

A program that only touches small disputes is easy to ignore, one $40 charge at a time. That’s the trap. A steady trickle of small FR6 losses can cost more than one big dispute, and every one of them is a customer who went to Amex instead of to you.

Amex’s prevention advice for its program codes is short: issue refunds within 7 calendar days, and make sure your refund and cancellation policies say clearly when credits will be issued.

The common mistake

Not asking which threshold applies. Ask your processor or Amex for your account’s threshold and enrollment date, so you can tell at a glance which disputes have any answer at all.

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Questions

What is Amex reason code FR6?

FR6 is Partial Immediate Chargeback Program. The Card Member disputed the charge, your merchant account is enrolled in the program, and the disputed amount is within the program’s threshold.

What are the FR6 thresholds?

Amex’s guide gives examples of up to $20, $25, $50, $100 or $250. Your processor or Amex can tell you which threshold applies to your account.

Can I fight an Amex FR6 chargeback?

Amex accepts proof you were not in the Partial Immediate Chargeback Program at the time of the chargeback, or proof that a refund already offsets the charge.

How is FR6 different from FR4?

FR4 is the Immediate Chargeback Program. FR6 is the partial version, which applies to disputes within a set dollar threshold.

Sources

  1. American Express: How to Manage and Help Prevent Disputes (US disputes reference guide), version 2024PROP; Chargeback Code FR6, notification, cause including example thresholds, accepted responses and prevention; read October 25, 2026.
  2. Stripe: Dispute reason code categories, Stripe groups Amex FR6 under Fraudulent; read October 25, 2026.

General information, not legal advice. Network and processor rules change; the due date on your own dispute notice always governs.

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