IFRS and U.S. GAAP are most similar in their requirements for:

FRS and U.S. GAAP both require discontinued operations to be reported on the income statement separately from continuing operations and net of tax. U.S. GAAP permits unusual and infrequent items to be treated as extraordinary items, but IFRS does not permit extraordinary items. Fixed assets can be revalued upward under IFRS but not under U.S. GAAP.