Depreciation: The Paper Loss
Depreciation: The Paper Loss
Depreciation is the most powerful real-estate tax tool available to individual investors. It allows you to deduct the cost of a building over a fixed period, reducing taxable income without touching your cash. This paper loss is the reason real estate generates tax shelters.
Key takeaways
- Residential buildings depreciate over 27.5 years; commercial buildings over 39 years, using straight-line depreciation.
- Land is never depreciable—only structures. A property appraisal typically allocates 70–80% to structure, 20–30% to land.
- The IRS requires you to use an allocated cost basis (building value minus land value) to calculate annual deductions.
- A $1 million residential building (70% allocated to structure = $700,000) yields $25,454 annual depreciation deductions.
- Depreciation recapture at 25% federal rate applies when you sell, but deferral strategies like 1031 exchanges can indefinitely postpone it.
Residential vs. commercial: the two main rates
The IRS has settled on two depreciation schedules for real estate: 27.5 years for residential property and 39 years for commercial property. These schedules apply only to the building's depreciable basis, not to land, parking lots, or other land improvements (which have different recovery periods).
Residential property includes apartment buildings, duplexes, condos, and rental homes. The 27.5-year recovery period reflects the assumption that residential structures wear out faster than commercial buildings due to tenant churn and wear-and-tear from families with children.
Commercial property includes office buildings, warehouses, retail centers, and industrial parks. The longer 39-year recovery period reflects lower-frequency maintenance needs and longer asset life.
In practice, residential depreciation is more valuable because the same deduction amount is spread over fewer years. A $700,000 residential building depreciates at $25,454 annually. The same $700,000 commercial building depreciates at $17,949 annually. Over 20 years, residential yields $509,080 in deductions; commercial yields $358,980.
Calculating your depreciable basis
The first step is allocation: separating land from structure. The IRS requires you to substantiate this split using one of three methods: a property appraisal, the property tax assessor's allocation, or the cost allocation method used when the property was constructed.
Example: You buy a $2 million commercial building. The appraisal allocates $600,000 to land and $1.4 million to building. Your depreciable basis is $1.4 million. Annual depreciation deduction: $1.4 million ÷ 39 years = $35,897.
Next, you check for any land improvements (concrete parking lot, landscaping, sidewalks, fencing). These may be depreciable separately under different recovery periods. The parking lot might be 15-year property; landscaping might be 5-year. These accelerated periods are rare in practice but matter if you're doing a detailed allocation.
Finally, personal property within the building (appliances, carpet, HVAC systems, furniture) may be depreciable on faster schedules (5 or 7 years) if separately identified. This is the foundation of cost segregation, discussed separately.
Straight-line vs. accelerated: why residential uses straight-line
Depreciation can be calculated straight-line (equal deductions each year) or accelerated (larger deductions early, smaller later). For residential property purchased after 1986, the IRS mandates straight-line depreciation over 27.5 years. No choice. This is true even if you qualify for bonus depreciation (covered later).
For commercial property, the rules are identical: straight-line over 39 years. The IRS removed accelerated depreciation methods (like the 150% declining-balance method) for real estate in 1986 to prevent abuse.
Historically, before 1986, investors could use accelerated depreciation to front-load tax losses. A building purchased in 1975 might generate $40,000 in deductions in year one but only $20,000 by year ten. This made real-estate syndications extremely attractive to high-income investors in the 1970s and early 1980s. The Tax Reform Act of 1986 eliminated this loophole by mandating straight-line recovery.
Example: a $1.5 million duplex
You buy a duplex for $1.5 million. The appraisal allocates $300,000 to land and $1.2 million to the building. Your depreciable basis is $1.2 million.
Annual depreciation deduction: $1.2 million ÷ 27.5 years = $43,636.
You're in the 35% combined federal and state tax bracket. Annual tax savings from depreciation: $43,636 × 0.35 = $15,272.
The duplex generates $120,000 annual gross rental income. After operating expenses ($45,000), debt service on a $1.1 million mortgage at 5% ($55,000 annually), you have $20,000 in pre-tax cash flow.
After the depreciation deduction, your taxable income is: $120,000 – $45,000 – $55,000 – $43,636 = –$23,636. You have a paper loss of $23,636, offsetting other income.
Tax outcome: You've generated $15,272 in tax savings while receiving $20,000 in actual cash. Your after-tax cash flow is $20,000 + $15,272 = $35,272 on a $400,000 down payment (8.8% after-tax return before appreciation).
The catch: recapture
Depreciation is not free. When you sell the property, the IRS "recaptures" all depreciation taken at a 25% federal rate (plus applicable state taxes). This is mechanically separate from capital gains tax.
If you sell the duplex five years later for $1.8 million, your realized gain is $1.8 million – $1.5 million = $300,000. Depreciation recapture is the $43,636 × 5 years = $218,180. This is taxed at 25%, yielding $54,545 in federal tax. The remaining gain of $300,000 – $218,180 = $81,820 is long-term capital gain (15% or 20% federal rate).
Total federal tax: $54,545 + ($81,820 × 0.15 or 0.20) = $66,773 to $70,909.
This seems expensive, but it's still better than ordinary income rates, and you've had five years of tax-free deductions. Moreover, if you execute a 1031 exchange into another like-kind property, you defer all recapture indefinitely.
Section 1250 property and the 25% rate
The 25% depreciation recapture rate is unique to real property (code Section 1250). For personal property like machinery or vehicles (Section 1245 property), depreciation is recaptured at ordinary income rates, which can be as high as 37%.
This is one reason real-estate owners favor real estate over equipment-heavy businesses: the recapture tax is capped at 25%, not 37%.
Special case: bonus depreciation
In certain years, Congress allows bonus depreciation, which accelerates the deduction of a portion of depreciable basis in the year of purchase. Bonus depreciation for real estate was 0% in 2018–2022 and phased back in starting in 2023. As of 2024, it's 60% (scheduled to phase down to 0% by 2034). This is covered separately because it changes the timing of deductions, but the recapture tax still applies.
Mismatch between depreciation and actual condition
Real property values often rise, even as you deduct depreciation losses. A beachfront apartment purchased for $2 million in 2008 might be worth $4 million in 2024. Over 16 years, you deducted approximately $1.16 million in depreciation (assuming $2 million purchase, 70% allocated to structure, 27.5-year life, = ~$51,000 annually × 16 = $816,000 simplified estimate).
You've reported a loss while the property appreciated $2 million. This is the magic of depreciation. It's a pure tax timing benefit, not an indication that your property is deteriorating. The mismatch is intentional—Congress designed it this way to encourage real-estate investment.
Flowchart: depreciation deduction process
Related concepts
Next
Depreciation deductions can be accelerated through cost segregation studies, which reclassify building components into faster recovery periods. Understanding cost segregation reveals how to multiply your annual deductions without changing the property itself.