# FAST

https://www.uniwebpay.com/glossary/fast/

*Last updated: 2026-08-03*

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.

## Related terms

*The methods themselves*

- [PayNow](https://www.uniwebpay.com/glossary/paynow/)
- [Dynamic PayNow](https://www.uniwebpay.com/glossary/dynamic-paynow/)
- [Static PayNow](https://www.uniwebpay.com/glossary/static-paynow/)
- [SGQR](https://www.uniwebpay.com/glossary/sgqr/)
- [Alipay+](https://www.uniwebpay.com/glossary/alipay-plus/)
- [WeChat Pay](https://www.uniwebpay.com/glossary/wechat-pay/)
- [UnionPay](https://www.uniwebpay.com/glossary/unionpay/)
- [E-wallet](https://www.uniwebpay.com/glossary/wallet/)
- [NETS](https://www.uniwebpay.com/glossary/nets/)

- [All 74 terms](https://www.uniwebpay.com/glossary/)

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