The NZ dollar advanced against the US stoking speculation the Federal Reserve will delay hiking interest rates.

The dollar weakened after the Reserve Bank governor reiterated the currency was "unjustified and unsustainable".

The Reserve Bank has singled out the New Zealand dairy sector as an "area of risk" for the financial system.

The NZ dollar has held steady overnight ahead of the Reserve Bank's Financial Stability Report.

Nike said if a trade deal with 12 Pacific Rim countries crossed the line the company might create 10,000 jobs in the US.

Graeme Hart's Rank Group confirmed it plans to sell down its stake in Carter Holt Harvey in an initial public offering.

The NZ dollar touched 92.82 Australian cents, its lowest level since late January, as traders price in rate cuts.

Fonterra will late this month release its milk price forecast for 2015/16 and indications are that it will be towards the lower end of market expectations.

A crackdown on tradies' cash jobs is yielding "outstanding" results, says the tax department.

The kiwi touched 74.23 US cents, and was trading at 74.43 cents at 8am in Wellington, from 74.99 cents at 5pm yesterday.

Shares of Heartland New Zealand rose after coming out of a trading halt as Quadrant Private Equity sells its 9 per cent stake in the bank.

Z Energy posted a 10 per cent increase in full-year operating earnings, as fuel and refining margins improved and the service station chain sold more fuel.

The kiwi dropped yesterday after data showed annual wage inflation in the private sector slowed to a 0.3 per cent pace in the three months ended March 31.

A teachers' organisation says a leaked document shows New Zealand has joined a group of countries pushing for education to be included in a murky trade deal.

International dairy prices fell for the fourth time in a row at this morning's GlobalDairyTrade auction.

New Zealand should be the next cab off the rank in securing a free-trade deal with the Gulf Co-operation Council, with Prime Minister John Key "much more positive" about it.

New Zealand dairy farmers are looking down the barrel of a low payout this season, and possibly next season, but Trade Minister Tim Groser says the sector can tough it out.

New Zealand commodity prices had their biggest decline since the height of the global financial crisis in 2008, led by falling dairy product prices.

Fonterra has fallen into line with market expectations after oversupply and extreme volatility on world dairy markets prompted the co-operative to once again lower its farmgate milk price.

Prime Minister John Key has met dignitaries and enjoyed a Burger Fuel meal in Kuwait, on the final stop of his Gulf States tour.

Milking cows under the cover of darkness has helped to produce a milk powder high in the sleep-promoting hormone Melatonin.