The Fed's new chairman Jerome Powell is expected to raise the fed funds rate a quarter point to a range of 1.50 per cent to 1.75 per cent early Thursday New Zealand time and markets will be watching to see what sort of tone he sets, given it's his first-rate review.
Key will be whether the Fed signals two or three more rate hikes this year. Shortly after the Fed's announcement, New Zealand acting Reserve Bank governor Grant Spencer is expected to keep the official cash rate at a record low 1.75 per cent in his final decision before turning the helm over to Adrian Orr.
"We expect Thursday's OCR review to contain few surprises. The OCR is expected to remain on hold at 1.75 per cent, with the bottom line likely to remain unchanged: 'Monetary policy will remain accommodative for a considerable period'," said Westpac Banking Corp in a note.
Against that backdrop, markets are waiting to see "what sort of push we are going to have to the downside as the US dollar strength story is back in vogue" said Ross Weston, a senior trader at Kiwibank.
Weston said a key level for the kiwi is the 200-day moving average of around US71.80c and there will be keen interest to see whether the Fed now signals three more rate hikes this year and whether Powell "comes across as hawkish or dovish".
Overall, Weston said he expected the kiwi to continue to "grind lower", in particular given "the upper band of the Fed's range is going to be the same as the official cash rate come Thursday morning."
He underscored that based on interest rate differentials alone "the kiwi should be much lower".
He said this week's dairy auction was unlikely to ruffle many feathers despite the fact that markets were expecting prices to weaken further as the focus was firmly on the central banks.
The kiwi dollar traded at 51.76 British pence from 51.80p on Friday in New York. It traded at 58.75 euro cents from 58.78c.
The kiwi lifted to A93.61c from A93.46c and fell to 4.5649 yuan from 4.5709 yuan. It declined to 76.27 yen from 76.61 yen.
New Zealand's two-year swap rate was unchanged at 2.26 per cent and the 10-year swap rate lifted 2 basis points to 3.20 per cent.
