The Serious Fraud Office says its new strategy of focusing on fewer, larger cases is paying off.
The comments follow a guilty plea by the former accountant of failed finance company National Finance 2000 to charges of false accounting and theft by a person in a special relationship.
Serious Fraud Office chief executive Adam Feeley says the office has changed its priorities in the last year to ensure speedier outcomes on the corporate failures which have generated the most public concern.
Mr Feeley says the office wants to ensure the public can have confidence in the integrity of financial markets, and show there are serious consequences for breaking the law.
Mr Feeley says the agency is investigating 19 cases of suspected serious fraud involving an estimated $630 million, and is prosecuting another 32 cases involving an estimated $265 million.