Depreciation is an annual tax deduction that allows taxpayers to recover the cost or other basis of business or investment property over time, accounting for wear and tear, deterioration, or obsolescence. It applies to tangible property (such as buildings, machinery, vehicles, furniture, and equipment) and intangible property (such as patents, copyrights, and computer software), but not to land. Depreciation begins when the property is placed in service for business or income-producing use and ends when the property is retired from service, the cost basis is fully recovered, or it is no longer used for business or income production.
What Property Can Be Depreciated?
- Tangible property used in business or income production (e.g., buildings, vehicles).
- Intangible property such as patents, copyrights, and software.
- Property used partially for business or investment purposes: Depreciation is deductible only for the portion used for business or investment. For example, depreciation on a car used solely for commuting or personal trips is not deductible.
- Cooperative apartments: Shareholders may deduct depreciation based on their ownership share and business use percentage.
When Does Depreciation Begin and End?
- Starts: When property is placed in service for business or income-producing use.
- Ends: When the property is retired from service, the cost basis is fully recovered, or it is no longer used for business/income production—whichever occurs first.
Basis Adjustments for Depreciation
- The basis of depreciable property must be reduced by the greater of depreciation allowed (amount actually deducted) or depreciation allowable (amount you are entitled to deduct).
- If you do not claim allowable depreciation, you still reduce the basis by the full allowable amount.
- If you deduct more than allowed, reduce basis only by the amount deducted that provided a tax benefit (depreciation allowed).
Depreciation Methods and Rules
- MACRS (Modified Accelerated Cost Recovery System): Required for residential rental property placed in service after 1986. Uses accelerated methods (e.g., half-year convention) for most assets.
- Half-year convention: Treats property as placed in service halfway through the year, allowing half a year’s depreciation in the first and last years of recovery.
Special Depreciation Allowance: : Your text states the allowance is "available for qualified property." Under the One Big Beautiful Bill Act (P.L. 119-21), the bonus depreciation rate was reinstated to 100% for qualified property acquired and placed in service after January 19, 2025.
Phased-Down Rate: Property acquired before this date but placed in service in 2025 is generally limited to a 40% allowance.
- Recapture: Recapture treats gain as ordinary income up to the amount of depreciation previously deducted; it is not just limited to the "allowance amount" but includes all claimed depreciation.
Correcting Depreciation Deductions
- If an incorrect amount of depreciation was claimed, you may file Form 1040-X (Amended U.S. Individual Income Tax Return) to correct it.
Reporting Requirements
- Use Form 4562 to report depreciation and amortization deductions.
- Refer to Publication 946 for detailed guidance on depreciation methods and rules.
Source:
Form 4562 Instructions
Publication 946: How to Depreciate Property
Disclaimer: Always verify details with current Federal or State Department of Revenue Forms and Instructions. For complex situations, consult a CPA or tax attorney.