The New Zealand dollar fell more than half a US cent amid concerns over how Spain will shore up its banking sector and an opinion poll showed growing support for Greece's anti-bail-out party, sapping demand for growth-linked currencies like the kiwi.
The New Zealand dollar fell to 75.40 US cents just before 8am from 76.03 cents yesterday at 5pm. The trade weighted index decreased to 69.14 from 69.48.
Investors' concerns are mounting about how the Spanish government plans to recapitalise its banking sector after the countries fourth-biggest bank Bankia SA sought a 19 billion euro bailout earlier this week.
The European Commission has called for direct euro-bloc aid and touted a region-wide deposit guarantee system. In Greece, an opinion poll showed citizens wants to see the terms of a European Union rescue revised, and the anti-bail-out part, Syriza, has regained voter support.
"It's the continuing European story with the Spanish banking sector and how they are going to deal with it and the surprise of the Greek poll," said Stuart Ive, currency strategist at HiFX. "The kiwi is under a certain amount of pressure."