This article analyses the international anti-corruption framework and the peer review monitoring process. Peer review is described as the “systematic examination and assessment of the performance of a state by other states, with the ultimate goal of helping the reviewed state … comply with established standards and principles.” However, despite its growing importance as a regulatory process, peer review has not been comprehensively analysed, resulting in a “literature famine” on its nature and operations. Indeed, to date, there has been very limited academic discussion on peer review. As a result, one aim of this article is to contribute to a stronger understanding of its process. While our focus is on peer review in the anti-corruption context, where possible, universal characteristics of the process are discussed. The second objective of this article is to consider the merits of the peer review process in incentivising states to take action against corruption. Peer review is the mechanism for evaluation of the United Nations Convention against Corruption (UNCAC), the Organisation for Economic Cooperation and Development (OECD) under its Anti-bribery Convention and the African Union’s (AU) good governance objectives under good governance objectives under the Peer Review Mechanism (APRM). Whilst acknowledging the criticisms of peer review, this article argues that peer review has been successful in particular contexts in increasing state compliance with these international instruments. In particular, peer review has contributed to the acceptance of anti-corruption norms and focused on the need for all countries to regulate corruption at the national level.