Financial Service Providers (Registration and Dispute Resolution) Act 2008, s 11; Credit Contracts and Consumer Finance Act 2003, s 99B
Lenders must be registered as financial service providers. If they aren’t registered, they can’t charge you any interest or fees under a credit contract.
If a lender registers after you’ve entered into a credit contract with them, they must give you written notice of this, and they can’t charge you interest or fees for the period before you were given the notice.