Bank Transfer Payments Guide

Connect API


Learn how to use the Payment API to enable bank transfer deposits from your user.


Each connected user on your platform will be assigned a unique virtual account number for bank transfer payments. We check the sender's name against the user's name to ensure the payment is being made to the correct virtual account. This creates a secure and seamless experience for your users and makes it easy for your team to reconcile these transactions.

Learn more about virtual accounts β†’


UI example of bank transfer instructions

curl --location --request GET '' \
--header 'X-XFERS-USER-API-KEY: TTMXHKWz8azyCIoswPNtrcNStc6P3rimI6nvXFRiqwY' \
--form 'merchant_ref="hello_world"'
curl --location --request GET '' \
--form 'merchant_ref="{{merchant_ref}}"'
  • To provide payee details for your user, initiate a request to display bank transfer instructions.
  • This enables your user to add a payee in their bank app using the fields: bank name, recipient name and bank account number.

Step 2 β€” Add callback URL

On a successful completion of a deposit transaction, StraitsX will send a callback notification to you via a callback URL indicated on the StraitsX Business Dashboard.


Adding a callback URL in sandbox mode


Add the callback URL on the dashboard to receive callbacks when the transaction has been completed.

curl --location --request POST '
=John Ng' \
--header 'X-XFERS-USER-API-KEY: TTMXHKWz8azyCIoswPNtrcNStc6P3rimI6nvXFRiqwY'
  • In the sandbox environment, you can make a mock bank transfer by initiating a mock bank transfer payment.
  • Input a name under source_bank_account_holder_name to test if the sender name is matched correctly to your user's name.

Step 3b β€” Make a bank transfer (Production)

To make a bank transfer payment, your users will need to deposit funds via their personal bank.

Add payee details example

Adding a payee to make a fund transfer (Last Updated: 13 Mar 2022)


For a full list of bank accounts supported by StraitsX, click here.

Step 4 β€” Confirm deposit has been received

Securing your callback

When the payment is received, we will send a callback to the URL indicated on the StraitsX Business Dashboard. The callback can be decoded using the HMAC-SHA256 algorithm to display the Request Body.

Learn more about how to secure your callback β†’

Request Body Parameters
Parameter NameDescriptionExample Value
amountAmount transferred89.35
bank_account_noFAST bank account number0393123432
created_atTime of creation2022-03-09T11%3A56%3A17%2B08%3A00
feesFees incurred0.49
idContract IDcontract_7mowjipsez3ryhs9auko03eajihpbeop
idempotency_idUnique ref no to prevent double transactionETA2022030911561153700
merchant_refUnique ID indicated in Get bank transfer instructions APIref_0d1w4m0xepp40
statusStatus of the transaction: completed/pending/cancelledcompleted
typeType of transactionDirect+bank+transfer


You may use the merchant_ref parameter to match with the incoming bank transfers from your users to check if the amount received was correct.