Most components of the index rose with the biggest improvement in households' near-term economic outlook. The net percentage of households expecting good times over the coming year surged to 13.8 from negative 5.8, the first positive reading since June 2010.
"Economic optimism has surged, prices for many consumer goods have been falling and sentiment in rural regions has picked up as the focus shifts from the immediate impact of drought tot the prospect of higher dairy payouts," Stephens said.
The survey showed a net 10.1 per cent expect their own finances to improve, up from 7.2 in the previous survey. A net 35.4 expect their longer-term economic outlook to improve, up from 32.1, and a net 34.4 per cent thought now is a good time to buy a major household item, up from 30.8.
Meanwhile, households' assessment of their current financial situation slipped to negative 10.8 from negative 10.4, although it remains the second highest level since December 2007.
A high level of consumer optimism had been sustained for three consecutive quarters and was now widely based with almost all demographic and income categories of consumers, said Richard Miller, managing director of strategy planning and economics consultancy McDermott Miller.
"Rising consumer optimism, coupled to growing confidence that household finances are more secure, points to a resurgence of consumer spending in the second half of 2013," Miller said.
"Widespread awareness that retailers are offering attractive sales, and that the high kiwi dollar ensures low prices, should spur consumer spending in the months ahead," he said.