Gather your information
- the IRD number to be registered
- your contact details
- your BIC (business industry classification) code
- the date you'll start paying interest.
Register as a RWT payer in myIR
You can either:
- complete the registration online
- download and fill in the form Resident withholding tax – interest payer registration – IR450. Post it to one of the addresses on the form. Remember to take a copy for your records.