There was no clear bias from the Reserve Bank as to which direction rates would go. The central bank's comments were slightly more "dovish" than many hand expected, and dealers noted a key feature of the previous announcement in September - "nevertheless, we expect some further policy tightening will be necessary" - was omitted this time.
"This omission will further fuel the skeptics in the market who believe the RBNZ will not tighten any further," Westpac said in a commentary.
The bank's repetition of its previous warning about the exchange rate, to the effect that its level remained "unjustified and unsustainable" added to the selling pressure.
"We expect some stability at around 0.7800, given its large FOMC-induced fall earlier, but during the days ahead it risks falling towards 0.7709 major support," Westpac said in a commentary.
Looking ahead, the Reserve Bank will this afternoon release foreign transactions data for September, which is expected to show whether the bank was again intervening after it sold August's $521mn net sale in August.
"Anything close to matching that figure will keep downward pressure on NZ dollar," the Bank of New Zealand said. "But a halt in selling activity would likely provide some support, if not provoke a mild - but misplaced - rally," the bank said.