Depreciation rules modernized to clarify asset categories and additional allowances, affecting business tax deductions and compliance.
Clause 33 creates a unified regime for depreciation on tangible and intangible assets used in business or profession, excluding goodwill; mandates written down value treatment for a block of assets with proportional deductions for partial business use; halves rates for assets used less than 180 days; provides pro rata apportionment on succession, amalgamation and demerger; treats leasehold improvements as depreciable buildings; permits late claims and carry forward of unabsorbed depreciation; allows disposal deductions for written down value shortfalls; and grants additional depreciation for new machinery and plant in manufacturing and power generation.