The relevance of this issue is due to the fact that the events that began in the new Millennium in the global anti-corruption movement have further highlighted the important role of the fight against corruption in the business sector. A special role in combating corruption in the sphere at the global level is assigned to the Group of twenty — G20. In the course of the research, the author came to the conclusion that, quite positively, the functioning of the business sphere was affected by the adoption in November 12, 2010 in the city of In Seoul, the leaders of the G20 “Anti-corruption action Plan”, which for the first time openly called for a closer public-private partnership in the fight against corruption. Today, the G20 is a group of key countries with developed and emerging market economies. As major trading powers, the G20 has a special responsibility to prevent and combat corruption, create a legal and policy framework that promotes a clean business environment, and continue to assist countries in their efforts to build capacity to fight corruption. Today, the G20 sets a good example for many countries, international associations, and groups to fight corruption in business.