Severe disruptions to global markets caused by Russia’s war on Ukraine have exposed vulnerabilities to the security of the supply of raw materials critical for industrial production and for the green transition. These supply chain vulnerabilities are the result of export restrictions,...

SIGMA Brief 28 aims to give guidance to auditors dealing with public procurement processes. Based on audit experience, it examines the stages that are worth looking at and explains why. It highlights those aspects that are recommended to be considered in more detail. It also gives advice as to...

Supreme audit institutions have a distinct role in supporting the development of a more strategic and forward looking state. This report assesses the role of Brazil's SAI – the Federal Court of Accounts (Tribunal de Contas da União or TCU) – in enhancing accountability and informing...

The report sets out how tax compliance strategies are evolving in light of new technologies, data sources and tools, including the increasing use of advanced analytics. It also looks at how these changes might affect the role of audit and auditors in the future. Finally it suggests a number of...

To support Mexico’s supreme audit institution, the ASF (Auditoría Superior de la Federación), in fulfilling its mandate, this report analyses good practices in OECD countries for incorporating governance issues into public works audits. It provides examples and assesses different strategic...