Depreciation of Real Property: IRS Rules and Tax Benefits

Real property depreciation is a federal tax mechanism that allows property owners to recover the cost of income-producing buildings and improvements over a defined recovery period established by the Internal Revenue Service. Governed primarily by IRS Publication 946 and the Modified Accelerated Cost Recovery System (MACRS) under 26 U.S.C. § 168, depreciation reduces taxable income without requiring an out-of-pocket cash outlay in the year the deduction is taken. The rules apply differently depending on property classification, placed-in-service date, and the owner's tax filing structure. Understanding the framework is essential for anyone navigating property providers or managing investment real estate.

Definition and scope

Depreciation, as defined by the IRS in Publication 946, is an annual income tax deduction that allows taxpayers to recover the cost or other basis of certain property placed in service for business or income-producing purposes. The deduction accounts for the property's wear, deterioration, and obsolescence over time.

For real property, the scope is specifically limited to structures and improvements — not land. Land is explicitly non-depreciable because it does not wear out or become obsolete (IRS Publication 946, Chapter 1). The depreciable basis is typically the purchase price minus the land value, adjusted for qualifying improvements and closing costs attributable to the property itself.

MACRS divides real property into two primary classifications:

1. Residential rental property — assigned a 27.5-year recovery period
2. Nonresidential real property — assigned a 39-year recovery period

Both categories use the straight-line depreciation method under MACRS, meaning equal deductions are taken each year over the recovery period, with a partial-year convention applied in the first and final years (26 U.S.C. § 168(c)).

A third category — qualified improvement property (QIP) — applies to interior improvements made to nonresidential buildings after the building was placed in service. The Tax Cuts and Jobs Act of 2017 and subsequent technical corrections through the CARES Act of 2020 assigned QIP a 15-year recovery period, making it eligible for bonus depreciation treatment (IRS Revenue Procedure 2020-25).

How it works

Depreciation calculations under MACRS for real property follow a structured sequence:

1. Determine depreciable basis — Establish the purchase price, subtract the allocated land value, and add qualifying capitalized improvement costs.
2. Classify the property — Identify whether the property qualifies as residential rental (27.5-year) or nonresidential (39-year) based on use.
3. Apply the mid-month convention — IRS rules require that real property placed in service or disposed of in any month is treated as placed in service or disposed of at the midpoint of that month (IRS Publication 946, Appendix A).
4. Calculate the annual deduction — Divide the depreciable basis by the recovery period (27.5 or 39 years). A property with a $275,000 depreciable basis classified as residential rental generates a $10,000 annual deduction.
5. Report on Form 4562 — Depreciation deductions are claimed annually on IRS Form 4562, Depreciation and Amortization, attached to the taxpayer's return.

Cost segregation is a related analytical method in which a qualified engineer or tax professional reclassifies components of a real property asset into shorter-lived personal property or land improvement categories (5-year, 7-year, or 15-year MACRS property). This accelerates deductions in earlier years without changing the total depreciable amount. The IRS addressed cost segregation methodology formally in the Cost Segregation Audit Techniques Guide published by the Large Business and International Division.

Common scenarios

Residential rental property — A single-family home purchased for $350,000, with $50,000 attributed to land value, has a depreciable basis of $300,000. At the 27.5-year straight-line rate, the annual depreciation deduction is approximately $10,909. The deduction offsets rental income reported on Schedule E of Form 1040.

Commercial office building — A commercial property with a $780,000 depreciable basis (land excluded) classified as nonresidential real property yields a straight-line annual deduction of $20,000 over its 39-year recovery period.

Qualified improvement property — Interior renovations costing $120,000 completed in a leased retail space qualify as QIP. Under the 15-year recovery period and 100% bonus depreciation rules in effect for property placed in service before January 1, 2023 (IRS Rev. Proc. 2020-25), the full $120,000 could be deducted in the year placed in service, subject to applicable limitations.

Depreciation recapture — When depreciable real property is sold, the IRS requires recapture of straight-line depreciation taken or allowable at a maximum federal rate of 25% under 26 U.S.C. § 1250. This unrecaptured Section 1250 gain is taxed separately from capital gain, reducing the net tax advantage of accumulated depreciation deductions upon disposition.

Decision boundaries

The eligibility boundary for real property depreciation rests on three conditions established by the IRS: (1) the property must be owned by the taxpayer, (2) it must be used in a trade or business or held for the production of income, and (3) it must have a determinable useful life exceeding one year (IRS Publication 946, Chapter 1). A personal residence not generating rental income fails condition two and is not depreciable.

The classification boundary between residential and nonresidential property turns on a single threshold: if 80% or more of the gross rental income from a building is from dwelling units, it qualifies as residential rental property and receives the 27.5-year recovery period. Below that threshold, the 39-year nonresidential rate applies (26 U.S.C. § 168(e)(2)).

The boundary between depreciable improvements and deductible repairs is a persistent compliance issue. The IRS issued the Tangible Property Regulations under Treasury Regulation § 1.263(a) to define when costs must be capitalized and depreciated versus expensed immediately. The regulations establish a safe harbor for routine maintenance and a de minimis expensing threshold — $2,500 per item for taxpayers without an applicable financial statement — creating a bright-line rule for most smaller transactions.

Passive activity loss rules under 26 U.S.C. § 469 further constrain the usability of real estate depreciation deductions for taxpayers who do not qualify as real estate professionals under IRS criteria. Depreciation losses from passive rental activities generally cannot offset non-passive income, though a $25,000 allowance exists for active participants with adjusted gross income below $100,000 (IRS Publication 925).

For context on how property classifications intersect with transaction structures, the property provider network purpose and scope and how to use this property resource pages provide additional sector framing relevant to investors and professionals working across asset categories.