Once ipaymy has made your payment to IRAS, typically your tax account will be updated within five business days from the date of receipt.
To avoid delay in the processing and posting of your tax payment, please ensure your 'Note to supplier' for IRAS tax payment includes your Tax Reference Number or 14 digits Payment Slip Number and the respective tax type. (eg. A1234567B Income Tax)
Click here for further details on IRAS processing and posting of payments.