A payment can be approved and communicated before money has finally moved between financial institutions. The difference becomes much easier to understand once clearing and settlement are separated.
Clearing organizes the payment
Clearing is the exchange and validation of payment information. The institutions involved identify the sender, receiver, amount and destination, then apply the rules and checks required by that payment system.
Depending on the rail, clearing may also include fraud screening, formatting checks and calculating what each institution owes.
Settlement moves the money
Settlement is the actual transfer of funds between the accounts used by participating financial institutions. It completes the financial obligation created by the payment instruction.
Some systems clear many payments first and settle their combined positions later. Others clear and settle each payment individually within seconds.
Why the distinction matters
A customer may see an approved transaction while interbank settlement is still pending. That is why authorization, account display and final settlement do not always happen at the same moment.
When someone asks whether a payment is complete, the useful follow-up is: has the instruction been accepted, have funds been made available, or has settlement become final?
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