The objective of this paper is to investigate the effects of the IFRS adoption on the comparability of accounting information for reporting interests in joint controlled entities (JCEs) and to explore the relation between the accounting choices and the related price earning ratio (P/E). It is intended to capture to what extent the level of comparability in financial reporting practice has increased after the mandatory introduction of IFRS, since differences could still exist in the application. To provide some evidence, the case study of Italy has been used. We test whether comparability within country (as measured by van der Tas H index) in policy choices has changed in relation to the application of IFRS. Harmonization will be measured wi...