At the media conference, Fed chair Janet Yellen may want to deliver "a pretty steady message", pointing to two hikes in 2017, Johnson said. "The tricky thing has been the trajectory of the US dollar" because as it goes higher it has the effect of tightening monetary conditions.
"Will it be a hawkish hike or a dovish hike," Johnson said. "No doubt she will raise rates. If she tries to cool things down, only two hikes, or hikes data-dependent, there could be some profit-taking in long (US) dollar positions. He noted it was only the second rate hike in 10 years. "That's gradual."
The Fed is widely expected to announce a 25 basis point increase in the fed funds rate to a range of 0.5 per cent-to-0.75 per cent.
The kiwi rose to 4.9797 yuan from 4.9622 yuan late yesterday. It traded at 67.80 euro cents from 67.62 cents late yesterday and rose to 96.24 Australian cents from 95.93 cents. The local dollar traded at 56.98 British pence from 56.73 pence. The kiwi gained to 83.05 yen from 82.78 yen.
The two-year swap rate rose 1 basis points to 2.27 per cent and the 10-year swap rate gained 1 basis point to 3.41 per cent.