Washington, DC-based advocacy group ONE has urged leaders to make the issue a top priority at this weekend's summit in Brisbane after recently releasing a report that estimates money laundering, bribery and tax evasion cost the developing world more than USD 1 trillion a year.
The group also estimates that as many as 3.6 million deaths could be prevented if money drained from the poorest countries by corruption was invested in health systems.
Anti-corruption advocates want public registries created that would show who actually owns and benefits from companies. Since 2010, the G-20 has issued two-year action plans on anti-corruption efforts, and a report on what has been achieved under the last plan is expected at this weekend's summit.
The leaders will also issue a new plan for 2015-16, which is expected to include commitments on issues such as foreign bribery, stolen asset recovery and whistleblower protection, said A J Brown, a director with Transparency International Australia.