Orr told an NZX issuer forum in Auckland today that the global low interest rate environment is raising new challenges for central banks, including the possibility of negative interest rates and alternative monetary policy strategies.
"We are currently thinking hard about these questions, because it makes sense to do so as a precaution – it's best to put the roof on when the sun is shining," Orr said.
"Our current view is that we are unlikely to need 'unconventional' monetary policy tools. But we would be remiss not to be prepared."
The head of foreign exchange sales at Commonwealth Bank of Australia, Tim Kelleher, said the market reacted positively to Orr's comments.
"It's a wind-back of what he's said previously."
The currency was still lower than this time yesterday, when it was trading at 63.22 US cents, and Kelleher says that reflects the fact that the market is short US dollars.
The Federal Reserve Bank of New York stepped in overnight to provide short-term cash loans to financial firms to ease the shortage, according to the Wall Street Journal.
Kelleher says the impact of the shortage is likely to be short-lived and the market should settle after the end of the month, which is also the end of the September quarter.
US President Donald Trump's comments that a deal to end his 15-month trade war with China could happen sooner than people think also helped improve sentiment, Kelleher says.
Trump told reporters that the Chinese are making big agricultural purchases from the US, including beef and pork, and that "they want to make a deal very badly... It could happen sooner than you think."
The New Zealand dollar was at 93.21 Australian cents from 92.91, at 50.97 British pence from 50.77, at 57.51 euro cents from 57.32, at 67.89 yen from 67.61, and at 4.4910 Chinese Yuan from 4.4749.
The two-year swap rate nudged up to a bid price of 0.9463 per cent from 0.9398 yesterday while 10-year swaps rose to 1.2100 per cent from 1.2000.
