Resident Withholding Tax (RWT) is a tax deducted from the gross amount of interest, for the relevant investment and saving products, paid to you.
When you open an InvestNow account, you will be asked to confirm your RWT rate and IRD number.
If we do not have an IRD number your account will be taxed at the “non-declaration” rate of 33%.
See the IRD website for more details.