What Is a Card Chargeback and How Does It Work?

A chargeback is a forced reversal of a card payment, initiated by the cardholder through their issuing bank. It exists to protect cardholders from fraud and from merchants who fail to deliver, but it is also open to abuse — and every chargeback costs the merchant money, time and reputation with the card schemes.

Chargebacks follow processes defined by Visa and Mastercard, not by the merchant or the payment provider. Understanding the process helps you respond within the deadlines and decide which chargebacks are worth fighting.

How does the chargeback process work?

1. The cardholder raises a dispute with their issuing bank, claiming the transaction was fraudulent, incorrect or that goods or services were not received.
2. The issuer assigns a reason code that classifies the dispute under the card scheme's rules, and returns the funds to the cardholder provisionally.
3. The chargeback reaches the merchant through the acquirer and payment provider, with a deadline to respond.
4. The merchant accepts or fights it. Accepting means the loss stands. Fighting it — called representment — means submitting evidence that the transaction was valid.
5. The issuer reviews the evidence and either reverses the chargeback or upholds it.
6. Arbitration is the final stage if the parties still disagree; the card scheme rules on the case, and the losing side typically bears additional costs.

What are the common chargeback reason codes?

Reason codes vary slightly between Visa and Mastercard, but they group into four broad categories:

• Fraud — the cardholder claims they did not authorise the transaction, common in card-not-present payments.
• Consumer disputes — goods or services not received, not as described, defective, or a cancelled subscription still being billed.
• Processing errors — duplicate processing, incorrect amount, or currency errors.
• Authorisation issues — the transaction was processed without valid authorisation.

The reason code determines what evidence is relevant, so always check it before preparing a response.

What are the timeframes?

Timeframes are scheme-defined. Cardholders generally have up to around 120 days from the transaction date — or from the expected delivery date for goods and services — to raise a dispute. Merchants then have a much shorter, scheme-defined window to respond with evidence, often measured in days rather than weeks. Missing the response deadline means the chargeback stands by default, so treat every chargeback notification as urgent.

What does a chargeback cost the merchant?

• The transaction amount is returned to the cardholder.
• A chargeback fee is charged regardless of the outcome.
• Staff time is spent gathering evidence and responding.
• The merchant's chargeback ratio worsens. Schemes monitor the ratio of chargebacks to transactions, and merchants who exceed thresholds can face remediation programmes, higher costs or ultimately loss of card acquiring.

How do you reduce chargebacks?

• Use 3D Secure on online payments. Successfully authenticated transactions generally shift fraud liability to the issuer. See 3D Secure and fraud prevention.
• Use a clear billing descriptor so customers recognise the charge on their statement.
• Make refunds and cancellations easy. A refund is always cheaper than a chargeback.
• Deliver on time and keep proof of delivery or service fulfilment.
• Respond quickly to customer complaints before they escalate to the bank.
• Screen for fraud with velocity checks and risk rules. See card testing and velocity checks.

Should you fight every chargeback?

No. Fight chargebacks where you have strong evidence — a 3D Secure authentication result, proof of delivery, or clear acceptance of your terms. For low-value transactions with weak evidence, accepting the chargeback is often cheaper than the effort of representment. What matters most is fixing the root cause so the same type of chargeback does not recur.

Related topics

• What Evidence Do You Need to Fight a Chargeback?
• Refund vs Reversal vs Dispute vs Chargeback
• What Is 3D Secure?
• Card Declines and Response Codes

Back to Refunds, Disputes, Fraud and Compliance.