Refunds in seconds — and the chargeback window that doesn't exist

The refund that didn't feel like a refund

A customer emails the merchant on Tuesday: the order was wrong, please refund. The merchant processes the refund on Tuesday afternoon. The customer emails again on Friday: where is the money? The merchant explains the refund is processed but the customer's bank has not yet credited it back to the card. The customer emails again on the following Wednesday: still nothing. The merchant calls support. Support explains that refunds can take up to ten business days depending on the issuing bank. The customer is now angry. The merchant has done nothing wrong, has paid the refund, and has a customer who feels cheated by a process the merchant does not control.

This is a normal week in the operational life of any merchant accepting cards. The refund is not the merchant's transaction; it is the merchant's instruction to a card network that then has to communicate with the issuing bank that then has to credit the cardholder. Every step takes time. None of the time is in the merchant's control.

What card refunds actually involve

A card refund is not the reverse of a card payment. The original payment authorisation flowed in seconds; the refund settles back to the card on a different rail with different timing. The merchant's processor sends the refund instruction to the card network, which routes it to the issuing bank, which queues it for the next batch credit to the cardholder's account. Most issuing banks process inbound refund credits in 3-5 business days; some take up to 10. None of this is visible to the merchant or the customer in real time.

For high-volume merchants, this becomes an operational pattern. Customer service handles "where is my refund?" queries that have no answer beyond "it is processed; please wait." Some customers escalate to a chargeback during the wait, which then triggers a separate dispute process even though the merchant has already refunded. The merchant pays a chargeback fee for a refund the customer has already been credited.

The chargeback window: 120 to 540 days of exposure

Beyond refund timing, the deeper problem with card-network settlement for merchants is the chargeback window itself. A customer can dispute a transaction with their issuing bank up to 120 days after the transaction date for standard Visa and Mastercard rules — and longer in specific categories. For services delivered over time (subscriptions, travel, deliveries scheduled for a future date), the dispute window can extend to 540 days from the original transaction.

That means a merchant who settled a transaction in March 2025 can have those funds clawed back as late as September 2026 if the customer initiates a dispute. The settled cash that appeared in the bank account a year and a half earlier — and which has since been spent on inventory, payroll, or operating expenses — comes back as a debit, plus a chargeback fee of $15-25, regardless of whether the merchant believes the original transaction was legitimate.

Friendly fraud — where a cardholder disputes a transaction they actually authorised, often months later, sometimes simply because they no longer remember the purchase — has grown into one of the largest categories of merchant loss. The merchant has the burden of proof. The default outcome of a dispute favours the cardholder.