Free guide
How to challenge a chargeback (UK)
A chargeback is a forced payment reversal: the cardholder disputes a charge with their bank, and the money is pulled back from you, usually with a fee. You can contest it, but only with the right evidence, in the right format, before the deadline. You respond through your own card-payment provider. MerchantHQ does not draft responses or manage disputes; this guide sets out the four steps, and our UK chargebacks explainer covers the stages in more depth.
Four steps to challenge a chargeback
- 01
Read the notification and note the deadline
When your provider raises a chargeback, note the reason code and the response deadline. UK acquirers typically give you 7 to 14 days to respond, so the clock matters. Miss it and the chargeback is upheld automatically.
- 02
Map the reason code to the evidence it needs
Each Visa and Mastercard reason code (fraud, product not received, not as described, duplicate, subscription cancelled) has a defined evidence set. Pull what applies: delivery proof, card-on-file consent, signed terms, communication logs, AVS and CVV results.
- 03
Write and submit your response
Write a short, factual rebuttal that answers the specific reason code and points to each piece of evidence, then submit it through your provider's dispute process or dashboard. A clear response that matches the reason code gives you the best chance.
- 04
Track the outcome and tighten your process
Follow the dispute to its decision. If a pattern emerges (subscription cancellations, high-value first-time orders), change the process that causes it, such as clearer refund terms or stronger authentication on risky orders.
When a chargeback is most worth fighting
Put the most effort in where a dispute is most winnable, or most costly to lose:
- A first chargeback on a new account, when you do not yet know the process
- High-value transactions (£1,000+) where a single dispute is worth fighting properly
- Card-not-present and online orders, which carry the highest chargeback exposure
- Subscription or deposit businesses, where cancellation disputes are common
- A chargeback ratio creeping toward 0.9%, the level acquirers start monitoring
- Suspected friendly fraud, where the cardholder received the goods but disputes the charge
In one sentence
You should not lose a chargeback because you missed the deadline or got the format wrong.
Many contestable chargebacks are lost for procedural reasons: a late response, the wrong evidence, or a rebuttal that does not answer the reason code. Start on the day it lands and answer the specific code.
Just had a chargeback notification?FAQs
What is a chargeback and how is it different from a refund?
A refund is something you choose to give a customer directly. A chargeback is forced: the cardholder asks their bank to reverse the payment, and the bank pulls the funds from your acquirer, who pulls them from you, often with a fee on top. You can contest a chargeback with evidence; that contest is called a representment.
Does MerchantHQ handle chargebacks for me?
No. MerchantHQ does not draft chargeback responses or manage disputes. Your provider runs the dispute process and you supply the evidence; this guide shows you how. The final decision sits with the card scheme and the issuing bank, so nobody can promise a win.
How long do I have to respond to a chargeback?
UK acquirers typically give you 7 to 14 days from the chargeback notification to submit your representment, depending on the acquirer and the reason code. Miss the deadline and the chargeback is upheld automatically, regardless of how strong your evidence is. Start the day the notification lands.
What chargeback ratio is a problem for my account?
Card schemes start monitoring merchants whose chargeback ratio approaches 0.9% of transactions, and acquirers can place you in a remediation programme or raise your rates above 1%. Track your own ratio monthly and change the process behind any repeat dispute type before it becomes a pricing or account-standing problem.
Does my provider charge for chargebacks?
Usually, yes. UK chargeback fees vary by acquirer and are set out in your merchant agreement. Check whether the fee is refunded if you win, and compare chargeback fees when you compare quotes.
MerchantHQ is owned and operated by Best Business Loans Ltd, directed by Oliver Mackman. Last updated: