Authorization, Clearing and Settlement: A Card Transaction's Three Acts

Three Stages, One Payment

Every card payment moves through three stages. Authorization is the real-time question — may this transaction happen? — answered by the issuer in seconds. Clearing is the exchange of final transaction records between merchant and issuer, usually within a day or two. Settlement is the actual movement of money between the parties through the card network. The tap takes a moment; the money finishes moving later.

Authorization: The Real-Time Decision

When a card is used, an authorization request races from the merchant through the acquirer and network to the issuing side. There, in milliseconds, the platform checks the balance and every control on the card — limits, merchant category, country, channel — and returns approve or decline. Programs on a modern card issuing platform receive this event as a webhook while the customer is still standing at the till, which is what makes instant spend notifications possible.

Clearing: The Final Numbers Arrive

Authorization amounts are not always final. Hotels authorize estimates; fuel pumps pre-authorize a cap; restaurants add tips. Clearing is when the merchant submits the completed transaction, and the final amount can differ from the hold. Ledgers that treat authorizations as final discover this the hard way — correct program accounting reconciles against clearing records, with the authorization as a pending state.

Settlement: Money Actually Moves

Settlement nets the cleared transactions and moves funds between the parties through the network. For a program operator, settlement events close the loop: the pending authorization became a cleared record and then settled cash. Platforms stream all three stages as events, so a program's ledger mirrors network reality without manual file handling — and disputes or chargebacks reference precise, staged records.