How to Calculate Real Estate Depreciation — Complete Guide (2026)
Learn how to calculate depreciation on rental and investment properties. Understand IRS schedules, cost segregation, and strategies to maximize your tax deductions.
Last updated: March 2026
Learn how to calculate depreciation on rental and investment properties. Understand IRS schedules, cost segregation, and strategies to maximize your tax deductions.
What is Real Estate Depreciation?
Real estate depreciation is a tax deduction that allows property owners to recover the cost of an income-producing property over its useful life as defined by the IRS. Residential rental properties are depreciated over 27.5 years and commercial properties over 39 years using the straight-line method. Only the building value — not the land — is depreciable, and the property must be used for business or rental purposes.
Step-by-Step Guide
Determine Your Property's Depreciable Basis
Start with your total acquisition cost, including purchase price, closing costs, and any immediate improvements. Subtract the land value to arrive at your depreciable basis. Use your property tax assessment ratio or a professional appraisal to separate land from building value.
Select the Correct Depreciation Schedule
Residential rental properties use a 27.5-year schedule, while commercial and non-residential properties use a 39-year schedule. The IRS requires the straight-line method for real property, meaning you deduct an equal amount each year over the recovery period.
Calculate Your Annual Depreciation Deduction
Divide your depreciable basis by the recovery period. For example, a residential property with a $275,000 depreciable basis yields a $10,000 annual deduction ($275,000 / 27.5 years). In the first and last years, prorate based on the month you placed the property in service.
Account for Capital Improvements Separately
Major improvements like a new roof, HVAC system, or kitchen remodel are depreciated on their own schedule starting from the date they are placed in service. Each improvement has its own depreciable life — building improvements follow the same 27.5 or 39-year schedule, while land improvements like fencing or paving use a 15-year schedule.
Track Accumulated Depreciation and Adjusted Basis
Maintain records of your total depreciation claimed each year. Your adjusted basis equals your original basis minus accumulated depreciation plus any capital improvements. This adjusted basis determines your taxable gain and depreciation recapture when you eventually sell the property.
Best Practices
Begin claiming depreciation in the first year the property is placed in service as a rental. You cannot go back and claim missed depreciation from prior years without filing a change in accounting method. Delaying costs you real tax savings.
Maintain receipts and documentation for every capital improvement. Each improvement starts its own depreciation schedule and adds to your adjusted basis, which reduces capital gains tax when you sell.
Items like appliances, carpeting, and window treatments can be depreciated over 5 or 7 years instead of 27.5 years. Identifying and depreciating these items separately front-loads your tax deductions.
When you sell, you will owe depreciation recapture tax of up to 25% on all depreciation claimed. Factor this into your sale analysis and consider strategies like 1031 exchanges to defer this tax.
If you own multiple properties, have done significant renovations, or are considering cost segregation, work with a CPA experienced in real estate taxation. The complexity increases with portfolio size, and errors can trigger audits.
Common Mistakes to Avoid
Depreciating the Land Value: Use property tax assessments or professional appraisals to accurately separate land from building value before calculating depreciation.
Forgetting to Depreciate a Rental Property: Claim depreciation every year starting when the property is placed in service. If you missed years, file Form 3115 to catch up.
Using the Wrong Recovery Period: Confirm whether your property qualifies as residential (27.5 years) or commercial (39 years) based on IRS guidelines before setting up your depreciation schedule.
Not Prorating the First Year: Use the mid-month convention: if you place a property in service in July, you can claim 5.5 months of depreciation for that first year.
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Frequently Asked Questions
Residential rental property is depreciated over 27.5 years using the straight-line method, which equals approximately 3.636% per year. This applies to the building value only — land is not depreciable. The deduction is the same each full year the property is in service.
No, you cannot depreciate your primary residence because it is not used for business or rental purposes. However, if you convert your home to a rental property, you can begin depreciating it based on the lesser of your adjusted basis or the fair market value at the time of conversion.
Depreciation recapture is the IRS requirement to pay tax on the depreciation you claimed (or should have claimed) when you sell the property. It is taxed at a maximum rate of 25%, separate from and in addition to any capital gains tax. This applies regardless of whether you actually took the depreciation deductions.
A 1031 exchange defers both capital gains tax and depreciation recapture tax by rolling the proceeds into a like-kind replacement property. Your depreciation basis in the new property carries over from the old one, and you continue depreciating from where you left off plus any additional investment in the new property.
Yes, through cost segregation studies you can reclassify certain building components into shorter depreciation schedules (5, 7, or 15 years). Combined with bonus depreciation provisions, this can generate substantial first-year deductions. This strategy is most cost-effective for properties valued above $500,000.
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