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Payments glossary · Singapore

FAST

Singapore's interbank transfer service for near-immediate transfers between accounts at participating banks. PayNow is the layer that sits on top of it and lets a transfer be addressed to a mobile number or a UEN rather than to an account number — which is why a PayNow payment behaves like a transfer and not like a card.

Why it matters to a merchant

Mostly worth knowing because it explains a difference merchants feel without being able to name: a PayNow payment is a transfer between bank accounts, so it does not behave like a card. There is no authorisation and capture, no chargeback in the card sense, and a mistaken payment is recovered by asking the recipient rather than by a dispute process.

Read more: Dynamic PayNow, static PayNow and SGQR: what a merchant needs to know

Where this comes up

Pages on this site that deal with this in context:

Related terms

In this section: The methods themselves

Last updated: 2026-08-03

Written by the Uniweb Pay team, Singapore. Licence details are checked against the MAS Financial Institutions Directory, which is the authoritative source — where anything here disagrees with the register, the register wins.