A dispute starts when the customer asks their bank to review a particular payment. The reasons vary but are mostly related to fraud, billing errors, and non-receipt of goods or services. While the claim is investigated, the issuer may give the cardholder a temporary credit. In practice, a transaction dispute may arise from credit card payments, bank account charges, or purchases made at an online store.

A dispute is not the same as a chargeback: the dispute is the cardholder's claim, while a chargeback is the reversal of funds that may follow — see chargeback vs dispute.

Common Reasons for a Dispute

Typical causes of transaction disputes include:

• Unauthorized transactions: Purchases made without the consent of the cardholder mostly due to fraud.
• Billing errors: Incorrect amounts or duplicate charges.
• Undelivered or faulty goods: The customer paid but didn't receive what they ordered, common in e-commerce.
• Refund issues: Merchant has agreed to a refund but does not process it.

Billing Errors and Unauthorized Charges

Billing errors are among the most frequent triggers for a transaction dispute. These include situations where the wrong amount was charged, a duplicate entry appears on the billing statement, or a subscription fee is applied after cancellation. Merchant error — such as entering the wrong transaction amount or processing a charge twice — also accounts for many disputes that could otherwise be avoided. Similarly, unauthorized charges — where a credit card is used without the cardholder's knowledge — are a primary driver of transaction disputes. When a cardholder identifies any of these discrepancies, they are entitled to challenge the disputed amount through their issuing bank.

Friendly fraud is another challenge merchants face: this occurs when a customer legitimately completes a credit card transaction but later files a dispute claiming the charge was unauthorized. Many disputes of this type require concrete evidence from the merchant to resolve in the merchant's favor. Learn more about chargebacks.

Who Is Involved in a Payment Dispute?

Several parties participate in resolving a dispute:

• Cardholder (Customer): The one who initiates the claim.
• Merchant: The business where the payment was processed.
• Card network (Visa, Mastercard): sets the dispute rules, reason codes and deadlines, and decides cases in arbitration.
• Payment gateway or technology provider (e.g., Payneteasy): passes dispute notifications to the merchant and helps collect and submit evidence.
• Issuing Bank: The cardholder's bank, which reviews the validity of a claim.
• Acquiring Bank: The merchant's bank that communicates with the issuer and handles potential chargebacks.

Both the cardholder and the merchant play critical roles in every transaction dispute: the cardholder provides the grounds for the claim while the merchant supplies evidence to defend the transaction. The issuing bank reviews the disputed amount and the documentation from all parties involved, and the card network decides if the case reaches arbitration.

How the Dispute Process Works

A card dispute usually goes through these stages:

1. The cardholder raises a dispute with their issuing bank — by phone, in the banking app or online — and provides details such as receipts or correspondence with the merchant. The issuer may give a temporary credit while the claim is reviewed.
2. The issuer reviews the claim and, if it is valid under card scheme rules, sends it through the card network to the acquirer.
3. The acquirer notifies the merchant, usually through its payment gateway, and asks for a response.
4. The merchant accepts or contests. If the merchant accepts, the amount is returned to the cardholder as a chargeback. If not, the merchant submits evidence (representment), and the issuer reviews it.
5. Arbitration, if needed. If the issuer still sides with the cardholder, the case can go to pre-arbitration and arbitration, where the card network makes the final decision.

Timelines are set by card scheme rules, not by a regulator. Cardholders usually have up to 120 days from the transaction to raise a dispute, merchants get a limited window to respond (often 7–30 days, depending on the acquirer), and a contested case can take from several weeks to a few months. In the UK, cardholders also have statutory protection: for an unauthorized payment, the bank must generally refund it by the end of the next business day (Payment Services Regulations 2017), and for credit card purchases between £100 and £30,000, Section 75 of the Consumer Credit Act makes the card provider jointly liable with the merchant.

How Merchants Can Prevent and Manage Disputes

Disputes cost merchants the transaction amount, extra fees and staff time. High dispute and chargeback ratios can also place a merchant in card scheme monitoring programs (such as Visa's VAMP or Mastercard's Excessive Chargeback Program), with fines, and can lead the acquirer to raise fees, require a reserve or close the account.

Most disputes can be prevented or resolved early:

• Clear billing and refund policies. A recognizable billing descriptor, visible refund terms and order confirmations reduce "I don't recognize this charge" claims.
• Responsive customer support. When customers can reach you easily, many billing issues are resolved with a refund before they reach the issuer.
• Fraud screening. Fraud filters and 3-D Secure stop unauthorized payments before they turn into disputes.
• Records and fast responses. Keep receipts, delivery confirmations and customer correspondence, and respond within the deadline when the acquirer requests evidence.

Payneteasy's Dispute Management System sends automatic chargeback notifications, tracks each case's status, and calculates chargeback ratios against card scheme thresholds. Integrations with Ethoca (Mastercard) and Verifi (Visa) alert merchants early, so they can refund a disputed payment before it becomes a chargeback. For a full set of prevention methods, see our guide to chargeback prevention.