Consumer confidence has plunged to its lowest level since 2009, as this month's ''hard-hitting'' federal budget continues to hurt.

According to ANZ-Roy Morgan's weekly survey, consumer confidence has dropped another 1.1 per cent over the past week, chalking up a 15 per cent per cent drop over the past five weeks, while perceptions of 'economic conditions next year' plunged by 6.3 per cent.

Going down: Consumer confidence has nosedived in the past five weeks.

Consumer confidence is now at its lowest level since May 2009, and the past five weeks has seen the largest sustained drop in confidence since the global financial crisis, ANZ said.