Influence of a mandatory IFRS adoption on accounting practice

Abstract

Purpose The purpose of this paper is to evaluate the changes of accounting policy choices and the harmonisation of accounting practices for two important financial reporting items within and between three IFRS adopting countries. Furthermore, it aims to address methodological shortcomings in the prior harmonisation literature through the introduction of two newly developed significance assessment methodologies. Design/methodology/approach The influence of the mandatory IFRS adoption in Australia (AUS), Hong Kong (HK) and the UK on deferred taxation (DT) and goodwill (GW) accounting practices as well as the within and between country harmonisation of accounting practices is investigated through an event type study. These investigations are conducted using a McNemar test with Bowker extension as well as the Split C‐Index with a newly developed bootstrapping significance testing methodology. Findings This study demonstrates that the mandatory IFRS adoption in the analysed countries is linked to a significant harmonisation of DT and GW accounting practices between AUS, HK and the UK. Furthermore, the increase of adequate accounting policy information in the financial reporting documents of UK firms over the period of this study is identified as an important harmonisation accelerator. Originality/value This study adds to the prior literature due to its focus on the mandatory IFRS adoption within the analysed countries. Furthermore, the introduction of two newly developed methodologies to evaluate the significance of accounting policy choice changes and harmonisation over time addresses an important methodological shortcoming in the prior literature.

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