The number of Australians becoming bankrupt or insolvent has jumped for the first time since the global financial crisis.

In a week that saw business identity "Diamond Joe" Gutnick go bust, new statistics show the ranks of Australians taking financial measures of last resort has swelled.

Personal insolvencies jumped 13.7 per cent in the three months to June, compared to the same period last year, and bankruptcies increased 7 per cent, according to the Australian Financial Security Authority.

Insolvencies for the 2015 financial year were up 4.4 per cent, the first increase since 2009, and bankruptcies were up 0.2 per cent, the first jump since the peak of the global financial crisis in 2008.