
Component Depreciation: Required Under IFRS, Optional Under GAAP — and When It's Worth It
Component depreciation splits a building or machine into parts with separate useful lives — mandatory under IFRS (IAS 16) for significant components, merely permitted under US GAAP. Here's how it prevents phantom depreciation after a roof or HVAC replacement, and how cost segregation studies and the partial asset disposition election capture similar benefits on the tax side.










