Supported card channels
Visa Mastercard American Express
Transaction limits
Key capabilities
✓ One-time charge — process a payment in a single API call. ✓ 3D Secure authentication to reduce fraud and chargebacks. ✓ Transaction cancellation for authorized but unsettled charges. ✓ Real-time status inquiry to confirm authorization, settlement, or decline. ✓ Subscription billing — see Subscription for recurring charge setup via card tokenization.How a card payment works
1
Customer enters card details
Your checkout page collects the card number, expiry, and CVV. These pass to SingaPay’s secure tokenization layer — raw card data never touches your servers.
2
3D Secure verification (if required)
For enrolled cards, the customer is redirected to their bank’s verification page to authenticate with a one-time code or biometric.
3
Authorization and settlement
SingaPay submits the charge to the card network. On approval, the transaction is authorized immediately and settles within the standard cycle.
4
Webhook confirmation
Your server receives a webhook event confirming the outcome so you can update order status and trigger fulfilment automatically.