By contrast across the Tasman, Reserve Bank of Australia's Philip Lowe on Thursday told politicians he was comfortable with where rates were in his first public outing as governor, indicating less appetite to cut the cash rate further from 1.5per cent.
"We're seeing a lot of kiwi-oz flows. There's a little bit of interest rate differential adjustment going on," said Alex Hill, head of corporate FX at NZForex.
"The likelihood of a cut in November has increased."
Updates from the RBNZ and RBA followed the Federal Reserve's latest policy review, with traders saying the US central bank maintained its position, keeping alive the prospects of an interest rate hike in December.
The NZ dollar is heading for a weekly decline of 0.5 per cent against the US dollar.
The kiwi fell to 4.8487 Chinese yuan from 4.8880 yuan and slipped to 64.92c from 65.19c. It fell to 55.75 British pence from 56.17p and was little changed at 73.49 from 73.46 yen.