This article evaluates the success of harmonisation in international accounting and the adoption of IFRS regulations in Japan. It discusses the advantages and limitations of IFRS implementation, Japan's adoption of IFRS, and a case study of Toyota Motor Corporation's successful adoption of IFRS. The article also highlights the challenges faced by organisations while adopting IFRS. Subject: Accounting, Course Code: N/A, Course Name: N/A, College/University: N/A