What the cardholder is claiming
“I was charged the wrong amount.”
Show how the total was calculated and what the Card Member approved — receipts, quotes or signed estimates.
Evidence that wins a Amex P05 chargeback
Start with the required items — they answer the claim directly. Recommended items make a borderline case stronger.
The amount charged was agreed Required
The receipt or order shows the cardholder agreed to the amount charged.
Pricing terms Recommended
Terms covering the final price (extras, taxes, currency).
Correspondence about the price Recommended
Anything confirming the amount.
How to respond to a Amex P05 dispute
- 1
Check the due date in your processor’s dispute dashboard. Responses that arrive late lose, however strong they are.
- 2
Collect the required evidence: the amount charged was agreed.
- 3
Add what strengthens the case: pricing terms, correspondence about the price.
- 4
Write a short response that answers the cardholder’s claim point by point, and cite the exact document and page behind each point.
- 5
Combine it into one clean package and submit it through your processor’s dispute portal.
Why Amex P05 chargebacks happen
- Taxes, shipping or fees added after the customer saw the total.
- A price changed between order and charge, or a manual keying mistake.
- Currency conversion made the statement amount look different.
How to prevent them
- Show the full, final total — tax, shipping and fees — before the customer pays.
- Send an itemised receipt with every charge.
- Get the customer’s written approval before charging a changed amount.
Amex P05 chargeback FAQ
- What does Amex reason code P05 mean?
- Incorrect Charge Amount. The Card Member says the amount charged was different from the amount agreed.
- What evidence do I need to win a Amex P05 chargeback?
- Required: the amount charged was agreed. Also strengthens your case: pricing terms, correspondence about the price.
- How do I respond to a Amex P05 chargeback?
- Gather the evidence above, write a response that answers the cardholder’s claim point by point and ties each point to a document, and submit it through your processor’s dispute portal before the due date shown there. Chargeback Warden checks your evidence against the Amex P05 checklist and drafts the cited response for you to approve.