Depreciation of Real Property: IRS Rules and Tax Benefits

Real property depreciation is one of the most consequential non-cash deductions available to investment property owners under the U.S. tax code. This page covers how the Internal Revenue Service defines depreciable real property, the specific recovery periods and methods that apply, the scenarios in which depreciation is most commonly used, and the boundaries that determine when depreciation applies or is disallowed. Understanding these rules matters because depreciation directly reduces taxable income from rental and investment activity, and its recapture at sale carries its own distinct tax treatment.

Definition and scope

Under IRS Publication 946, depreciation is defined as the annual deduction that allows taxpayers to recover the cost or other basis of certain property placed in service for business or income-producing use. For real property, this means the structural components of a building — not the underlying land — can be depreciated over a prescribed recovery period.

The IRS distinguishes two primary categories of depreciable real property under the Modified Accelerated Cost Recovery System (MACRS):

1. Residential rental property — Defined as a building where 80 percent or more of gross rental income comes from dwelling units. Assigned a 27.5-year recovery period under 26 U.S. Code § 168.
2. Nonresidential real property — Commercial buildings and other real property not qualifying as residential rental. Assigned a 39-year recovery period under the same statute.

Land itself is explicitly excluded from depreciation. The IRS position, codified in Publication 946, holds that land does not wear out, decay, or become obsolete. This makes accurate land-to-improvement allocation a critical step in any depreciation calculation. For context on how improvements are categorized relative to land, the distinction covered on types of real property provides useful classification background.

How it works

Depreciation under MACRS uses the straight-line method for real property. The depreciable basis — generally the purchase price plus capitalized acquisition costs, minus the allocated value of the land — is divided evenly across the recovery period, subject to a mid-month convention in the first and final years of service.

The mid-month convention, specified in IRS Revenue Procedure 87-57, treats property as placed in service at the midpoint of the month it is first used. This means a residential rental property placed in service in March receives 9.5 months of depreciation in year one, not a full 12 months.

Structured calculation steps:

1. Determine the total cost basis of the property (purchase price plus acquisition costs).
2. Allocate the land value, typically using the assessed value ratio from the county property tax assessment or an independent appraisal.
3. Subtract the land allocation from total basis to arrive at the depreciable building basis.
4. Divide the depreciable basis by the applicable recovery period (27.5 or 39 years).
5. Apply the mid-month convention table from IRS Publication 946 to determine the first-year deduction.

A building purchased for $550,000 with $100,000 allocated to land produces a depreciable basis of $450,000. At the 27.5-year residential rate, the annual depreciation is approximately $16,364 (IRS Publication 946, Table A-6).

Common scenarios

Residential rental property is the most frequent context for real property depreciation. A single-family home, duplex, or apartment building held for rent qualifies immediately upon being placed in service. Depreciation offsets rental income, often reducing or eliminating the taxable portion of rent received.

Commercial property — office buildings, retail centers, and warehouses — follows the 39-year schedule. The longer recovery period means smaller annual deductions relative to basis, but the deductions remain available for the full commercial life of the asset.

Cost segregation studies allow property owners to reclassify components of a building — wiring, flooring, parking lots, specialty plumbing — as personal property or land improvements with 5-, 7-, or 15-year recovery periods under MACRS. Per guidance from the IRS Audit Techniques Guide for Cost Segregation, this front-loads deductions, accelerating the tax benefit. A cost segregation study on a $2 million commercial building can reclassify 20 to 40 percent of cost into shorter-lived asset classes, dramatically compressing the depreciation timeline.

1031 exchange transactions carry depreciation implications because the carryover basis rules preserve accumulated depreciation from the relinquished property. The 1031 exchange rules page covers how basis is transferred and how depreciation schedules continue under the replacement property.

Passive activity loss rules under 26 U.S. Code § 469 limit the deductibility of depreciation losses for investors who do not materially participate in rental activity. Losses that exceed passive income may be suspended and carried forward until the property is sold or the taxpayer achieves active participation status.

Decision boundaries

Depreciation recapture is the defining constraint at disposition. When depreciable real property is sold, the portion of gain attributable to prior depreciation deductions is taxed at a maximum rate of 25 percent under 26 U.S. Code § 1250, rather than the standard long-term capital gains rate. This recapture applies regardless of whether the taxpayer actually claimed the depreciation — the IRS applies it based on the depreciation allowable, not just the depreciation taken.

Personal-use property does not qualify. A primary residence, vacation home, or property held purely for personal use generates no depreciation deduction. The property must be held for business or income production.

Placed-in-service date controls eligibility. Property must be both acquired and ready for its intended use before depreciation begins. A building under renovation before first rental is not yet placed in service for depreciation purposes.

The interaction between real property depreciation and real estate capital gains tax treatment at sale represents one of the more complex areas of investment property taxation, requiring careful tracking of adjusted basis throughout the holding period. For investors comparing acquisition structures, property ownership structures affects how depreciation deductions flow through to individual tax returns.

References

• IRS Publication 946 — How to Depreciate Property
• 26 U.S. Code § 168 — Accelerated Cost Recovery System
• 26 U.S. Code § 1250 — Gain from Dispositions of Certain Depreciable Realty
• 26 U.S. Code § 469 — Passive Activity Losses and Credits Limited
• IRS Revenue Procedure 87-57 — MACRS Optional Depreciation Tables
• IRS Audit Techniques Guide: Cost Segregation