RBNZ restrictions on high loan to value ratio (LVR) mortgages came into effect on 1 October 2013. They are already biting – with ASB pulling its high LVR approvals. By definition, the new rules will reduce high LVR borrowing growth, but not necessarily total borrowing (because banks are now incentivised to lend ‘traditional’ mortgages). The international evidence on impact on house prices is mixed at best and the RBNZ’s regulatory impact assessment is pretty up front about it.
Where I disagree
The purpose of the new rules is to reduce the amount of risk accumulating in the banking sector. The RBNZ’s aim should not be to reduce credit growth or house price growth per se, rather systemic risk arising from high risk debt that may have implications for financial stability, and in turn, economic stability. But it feels like the RBNZ is really targeting house prices.
The RBNZ should keep the financial stability tools as separate from monetary policy as possible. Focussing on risk in the financial system in a consistent manner would keep monetary policy independent/free of political interference. Politicians will be running interference with this policy – as we have already seen from National, Labour and Greens. This political interference should be a good reason to ask if the RBNZ should be doing both monetary policy and financial stability.