The Group of Twenty (G20) is a forum for the governments and central bank governors from developed and developing countries. It was established in 1999 as a venue for the meetings of ministers of finance and central bank governors on the issues of global financial stability. In 2008 the format of the meetings was substantially modified with the introduction of G20 annual summits of heads of state or heads of government thereby granting G20 the status of a major forum for international economic cooperation.
The G20 activities focus on the coordination of the policies of its member states with a view to achieve global economic stability and sustainable development, promote financial regulation that would decrease risks and prevent crises in the future and modernize international financial architecture.
G20 does not have a formal head or a permanent secretariat: the country that chairs G20 addresses organizational issues and defines the agenda. The presidency is assumed in the end of the year. Saudi Arabia held the G20 chair from 1 December 2019, Italy assumed the presidency on 1 December 2020 and Indonesia will get the chair on 1 December 2021.
The anti-corruption issues within G20 are addressed by the Anti-Corruption Working Group (ACWG), established in 2010.
The ACWG meetings are held within the presidency of each country three times a year. The ACWG is guided by a three-year G20 anti-corruption action plan. Currently the ACWG is carrying out its activities in accordance with the Action Plan 2019-2021.
The experts of the group also prepare a contribution on anti-corruption issues to the declaration which is adopted by the leaders of the G20 member states at the annual summit.
The G20 does not have an evaluation mechanism as such. The ACWG prepares an annual accountability report on the results of its activities and the anti-corruption measures implemented by the G20 countries.
The 2018 G20 ACWG accountability report is available here and the 2017 report is available here.