Payment Reversal

A payment reversal is the undoing of a payment, or of an authorisation for a payment, so that the payer's money is returned or is no longer held. Reversals are normally initiated by the party that sent or requested the payment, often the merchant or the payer's own bank, to correct an error such as a duplicate charge, a wrong amount or a payment sent to the wrong account, or to cancel a sale that will not go ahead. The precise meaning and rules depend on the payment system involved.

Reversals are easily confused with related processes. A refund is a new payment from merchant to customer after a completed sale; a chargeback is a forced reversal raised by the card issuer at the cardholder's request; a returned payment is sent back by the receiving bank, for example because the account is closed; and a payment recall is a request to the receiving bank to send funds back. A reversal, by contrast, is usually initiated by the sending side under rules that allow it to cancel its own transaction.

In card payments, reversals happen mostly before settlement. An authorisation reversal tells the issuer to release some or all of an authorisation hold, for example when a customer cancels an order, a hotel guest checks out for less than the estimated amount, or a terminal times out and the merchant cannot be sure the authorisation was received. Releasing the hold quickly restores the cardholder's available balance and avoids complaints.

A merchant can also cancel a sale before it is submitted for clearing through a void transaction, which removes it from the day's batch. Once a transaction has been cleared and settled, however, it can no longer be reversed in this way; the merchant must issue a refund instead.

Card networks expect merchants to reverse authorisations they will not use, and some charge fees or impose penalties when holds are left in place unnecessarily. Systems also generate automatic reversals when an authorisation response is not received in time, to prevent the cardholder from being charged for a transaction that the merchant believes failed.

In the US ACH network, the Nacha Operating Rules let an originator or its bank send reversing entries to correct certain errors: duplicate entries, entries to the wrong receiver, and entries for the wrong amount or date. The reversal must generally be sent within five banking days of the settlement date, and the receiver must be notified. An ACH reversal is not guaranteed to succeed: if the receiver has already withdrawn the money, the reversal may be returned unpaid.

For wires and instant payments, which are generally irrevocable once settled, a sending bank cannot simply reverse a payment. It must ask the receiving bank to return the funds, which requires the receiving bank's cooperation and often the beneficiary's consent. This makes the concept of irrevocability central to how errors and fraud are handled in these systems.

ISO 20022 defines separate messages for these situations. A payment reversal message, pacs.007, lets the sender of a previously settled payment, such as a creditor bank reversing a direct debit collection, undo it under scheme rules. A payment return, pacs.004, sends funds back from the receiving side. A cancellation request, camt.056, asks the receiving bank to cancel or return a payment, with the answer given in camt.029. In SEPA Direct Debit, for example, a creditor can use a reversal when it discovers that a collection should not have been made, while a debtor's bank uses a return or a refund in other cases.

Reversals are an important correction tool. They allow errors to be fixed quickly and cheaply without disputes, they protect customers from paying for goods they never received, and they keep authorisation holds from tying up money unnecessarily. For merchants and banks, prompt reversals reduce the risk of chargebacks and complaints and help keep records accurate. Reversed transactions must also be reflected correctly in reconciliation, so that ledgers, settlement reports and customer statements agree.

Reversals can be misused. Fraudsters may try to exploit reversal processes to obtain goods and then cancel the payment, or to reverse payments they made voluntarily. Payment systems therefore limit who may initiate a reversal, for what reasons and within what time. Incorrect reversals can also harm customers, for example by removing funds that the receiver had a right to keep, which is why rules usually require a valid reason, notification of the affected party and an audit trail.