Abstract
This paper describes several implementation effects associated with the mandated adoption of international financial reporting standards promulgated by the International Accounting Standards Board in the European Union, including a possible increased demand for detailed implementation guidance and for a single European securities regulator. The paper also discusses the mandated adoption as a research setting for considering the relative influences of standards versus incentives as determinants of financial reporting outcomes, and describes two standard setting challenges that may become more pronounced as a result of the mandated adoption.