The Westpac survey showed a modest drop in the percentage of households expecting an improvement in their financial situation, at 10.6 per cent from 12.1 per cent in the fourth quarter.
"We continue to be of the view that in the next couple of years, consumer spending will be a passenger as other sectors of the economy sit in the driver's seat," Delbruck said.
The survey shows optimism about the economy in the year ahead has only been higher in June 1994, when a net 38.6 per cent of respondents were upbeat, and in December 2004 with a net 36.4 per cent positive reading.
Still, optimism about the next five years weakened, with a net 31.8 per cent optimistic in the first quarter compared with a net 34.4 per cent in last December's survey.
The present conditions index, which summarises how households' financial situation has changed over the past year and whether now is a good time to buy a major household item, rose to 115.5 in the first quarter from 113.1 in the fourth quarter of last year.
The survey of 1,594 people was conducted between March 1 and March 10.
Read the full survey here: