The New Zealand dollar followed its Australian counterpart higher after the Reserve Bank of Australia cut interest rates in line with expectations and soothing fears the world's 12th biggest economy could be in for a big fall as its mining boom peaks.
The kiwi increased to 82.43 US cents at 8am in Wellington from 82.29 cents yesterday, following the Australian dollar's lead, which rose to $US1.0472 from $US1.0446.
The kiwi was little changed at 78.68 Australian cents from 78.73 cents yesterday.
The RBA cut the target cash rate a quarter point to 3%, the lowest level since the depths of the global financial crisis and matching a five-decade low.
Governor Glenn Stevens said the bank has started seeing signs of looser monetary policy emerge, and this was seen as a move to foster growth outside the resources sector which has underpinned the economy in recent years.
Government figures today are expected to show the Australian economy grew 0.6% in the September quarter.
"The accompanying statement highlighted the negatives, but there were no new negatives and markets are in the mood to take no news as good news," says Kymberly Martin, strategist at Bank of New Zealand in Wellington.
"If the RBNZ comes out tomorrow and points to the obvious things about the economy and provides no new fears, we might have a similar reaction."
The RBA's review comes two days before the Reserve Bank here reviews monetary policy, with governor Graeme Wheeler tipped to keep the official cash rate on hold at 2.5%. That would cut Australia's interest rate advantage to half a percentage point.
Mr Martin says the currency may trade between 82 US cents and 82.60 cents today.
Dairy prices at Fonterra's online auction fell 2%, with exporters increasing the supply available.
The sale came a day after ANZ New Zealand data showed commodity prices here rose for a fifth month in November and after government figures this week showed terms of trade fell to a three-year low in the September quarter as a strong currency eroded returns on dairy exports.
Global investor sentiment was flat as US policymakers continued to cling to their partisan colours as they struggle to avert the $US607 billion fiscal cliff of spending cuts and tax increase.
The latest deal put forward by senior Republican and House of Representatives Speaker John Boehner was shot down within an hour by the White House, and highlighted fractures within the Republican party.
New Zealand's trade-weighted index was unchanged at 73.45, and the kiwi was little changed at 67.51 yen at 8am in Wellington from 67.57 yen yesterday.
It traded at 62.95 euro cents from 62.99 cents yesterday and increased to 51.20 British pence from 51.09 pence.