The New Zealand dollar rose more than 1 US cent as the European Central Bank unexpectedly cut rates and Greece backed off a plan to hold a referendum on its bail-out.
The kiwi rose to 79.46 US cents at 8am from 78.31 US cents at 5pm yesterday.
ECB President Maio Draghi cut the interest rate on the main financing operations of the euro-zone system by 25 basis points to 1.25 per cent and said the economic outlook continued to be subject to particularly high uncertainty and intensified downside risks.
Stocks on Wall Street rallied after Greek Finance Minister Evangelos Venizelos said the Mediterranean country will not hold a referendum. The S&P 500 was up 1.5 per cent as the new trading day got under way in New Zealand. The referendum plan had earlier triggered strong selling in financial markets.
The situation in Greece remains volatile ahead of a confidence vote tomorrow but many commentators argue the indebted country's leader has lost a game of chicken with European leaders.