IFRS are a global set of accounting standards used to maintain comparable and understandable financial reporting across international boundaries. They were established to increase the reliability of financial statements for cross-border transactions and improve the comparability of reporting globally. Some benefits of IFRS include increased credibility, easier access to technical support, and career mobility for accounting professionals. However, adopting IFRS also presents challenges such as differences from existing accounting standards, the need for training and education, legal considerations, and taxation effects.