There's no prizes for going harder than we need to on interest rates.

KiwiBank says the Reserve Bank is at risk of going too far.

The central bank lifted the Official Cash Rate by 75 basis points last month, while Australia's Reserve Bank lifted theirs by 25 basis points yesterday.

KiwiBank CEO Steve Jurkovick told Mike Hosking the Reserve Bank should watch and see the impact coming through of the tightening so far.

He doesn't see a downside to that as it's an approach being taken by other central banks around the world.

Jurkovich doesn't see why we need to be such a dramatic outlier.

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