Survey result suggests Reserve Bank will not have to rush to raise interest rates.

The Reserve Bank will impose the most controversial of its new tools – a limit on riskier mortgage lending with smaller deposits – if it judges such loans to be a "significant risk" to the country's financial stability.

RBNZ governor says the country's financial health is still sound, though growing private sector credit and rising house prices pose a concern.

The Reserve Bank is "carefully monitoring" an already highly indebted agriculture sector as the recent drought is likely to put more strain on stretched balance sheets.

The central bank has been juggling a booming housing market against a rampant kiwi that has kept a lid on tradable inflation.

"At this point, we expect to keep the OCR unchanged through the end of the year."