The Reserve Bank has fine-tuned the regime to restrict home-lending for borrowers with small deposits, but reiterated that banks will get just two weeks' notice before any new rules are imposed.
The central bank has settled on a 'speed limit' approach to proposed restrictions on high loan-to-value ratio mortgage lending, effectively reducing the volume of low-equity lending banks can offer in a given period rather than banning it outright.
In response to the consultation period, the RBNZ will give lenders a six-month window where low-equity lending limits are measured at an average rate, and then impose the restrictions for lending in excess of $100 million a month over a three-month average rate.
Banks with mortgage lending below $100 million a month will be expected to meet the speed limit over six-month rolling windows.
Deputy governor Grant Spencer reiterated that any decision to impose the restrictions would be announced two weeks before they took effect.