Just how different can accounting numbers be for the same company under different accounting rules? Which countries use International Financial Reporting Standards (IFRS)? In what main ways is US ‘generally accepted accounting principles’ (US GAAP) different from IFRS? How have politics and economics affected accounting? ‘International differences and standardization’ shows how international standardization simplifies the preparation of financial statements covering whole international groups and how it improves the comparability of the accounting information for managers and investors. Differences between US GAAP and IFRS are considered: US GAAP is more detailed than IFRS and tends to be written in terms of rules rather than principles. It also has fewer options.