The New Zealand dollar fell near a two-week low as the yield on Spanish 10-year government bonds rose to a record high amid fears Europe's debt woes are becoming more contagious, sapping investors' appetite for riskier assets.
The kiwi fell to 78.87 US cents at 8am in Wellington from 79.40 cents yesterday. The trade-weighted index dropped to 71.68 from 72.07.
The yield on Spain's benchmark government bond rose as high as 7.57 percent after the Spanish and Italian governments reinstated bans on betting against stock declines.
That came as stocks on Wall Street and in Europe fell after Catalonia added its name to the list of Spanish regions that may need a central government bail-out. Wall Street's Standard & Poor's 500 Index fell 0.9 per cent, Germany's DAX 30 sank 3.2 per cent and France's CAC 40 dropped 2.9 per cent.
"If 7 (per cent bond yields) is terrible then 8 must be catastrophic," said Alex Sinton, director institutional FX at ANZ New Zealand. "That was enough to drag the kiwi and Aussie lower," he said referring to the trans-Tasman currencies colloquially.