BNZ has lifted its mortgage interest rates today. Photo / Alex Burton/Portable Images BNZ has lifted its mortgage interest rates today. Photo / Alex Burton/Portable Images

Interest rates are going up because wholesale rates had 'increased significantly in recent weeks', a Westpac leader says. Photo / Alex Burton/Portable Images Interest rates are going up because wholesale rates had ‘increased significantly in recent weeks’, a Westpac leader says. Photo / Alex Burton/Portable Images

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