Liam Dann: NZ Herald business editor at large says rising mortgage rates proof our economy at mercy of global forces - Heather du Plessis-Allan Drive

New Zealand's official cash rate has stayed in place at 5.5 for the last four months- yet several banks have hiked their mortgage rates.

Anyone who has re-fixed a mortgage in the past few months has felt the sting of increased rates ticking upwards.

NZ Herald business editor at large Liam Dann says these hikes are proof New Zealand is at the mercy of international market forces, namely the US and China.

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