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You cannot claim Section 179 on a residential rental building or its structural components, such as the roof or HVAC. Appliances, furniture and equipment may qualify if you meet the business and leasing requirements below. Commercial landlords can also elect it for certain improvements to their buildings.
Section 179 lets a business deduct the full cost of qualifying property in the year it’s placed in service, instead of depreciating it over several years (IRS Publication 946).
This is general information about US federal rules for 2026, not tax advice.
What Qualifies for Section 179 on Rental Property?
Roofs, HVAC, fire protection, alarm and security systems only qualify as improvements to a nonresidential building, made after the building was first placed in service.
Qualifying interior improvements are improvements to the inside of a nonresidential building, made after it was first placed in service. Enlargements, elevators and escalators, and the building’s internal structural framework are excluded.
Land and land improvements don’t qualify at all (IRS Publication 946).
On a residential rental, the roof, HVAC and similar work are part of the building, which is generally depreciated over 27.5 years.
The Tests Landlords Have to Pass
1. Renting has to be your trade or business
IRS Publication 946 says rental property doesn’t qualify "if renting property is not your trade or business." Ask your accountant whether your rentals count.
2. The leasing test
If you’re a noncorporate lessor, for example an individual or a partnership, purchased property you lease to tenants generally qualifies only if both of these are true (IRS Publication 946):
- the lease term, including any renewal options, is less than 50% of the property’s class life, and
- in the first 12 months after the tenant takes the property, your allowable business deductions for it (not counting rent or reimbursed amounts) are more than 15% of the rental income it produces.
There’s an exception for property you manufacture or produce yourself. If you own rentals through an LLC, how the LLC is taxed decides how this test applies. The test can rule out appliances and furniture in long-term rentals, so get your accountant to run it before you claim anything.
3. The income limit
Your Section 179 deduction can’t be more than your taxable income from the active conduct of any trade or business. You actively conduct a business if you meaningfully participate in its management or operations, and wages count toward the limit. Anything over the limit carries forward to the next year.
4. More than 50% business use
You can only elect Section 179 if you use the property more than 50% for business in the year it’s placed in service. If business use falls to 50% or less during the property’s recovery period, you may have to recapture part of the deduction by including it in your taxable income.
Other Ways to Deduct Rental Property Costs
- 100% bonus depreciation. Appliances, carpet, furniture and land improvements like fences can generally be written off in the year they’re placed in service. There’s no business-income cap and no leasing test. The rate is permanently 100% for eligible property both acquired and placed in service after January 19, 2025 (IRS). How bonus depreciation works
- The $2,500 de minimis rule. If you don’t have an applicable financial statement, you can deduct items costing up to $2,500 each (per invoice or item) as a rental expense. It isn’t automatic. You need an accounting policy in place at the start of the year that treats these costs as expenses, you have to expense them in your own books, and you make the election each year with a statement attached to your timely filed original return, including extensions (IRS). Repairs vs. improvements
- Regular depreciation for a residential rental building and its structural work, generally over 27.5 years under the usual (GDS) rules. Nonresidential buildings generally use 39 years. How to calculate rental depreciation
- Cost segregation for larger buildings, which moves part of the cost into faster schedules. How cost segregation works
An example. You own a duplex and in 2026 you replace the roof ($14,000), a fridge ($1,100) and the carpet in one unit ($3,200).
- Roof: part of the building, so it’s generally depreciated over 27.5 years.
- Fridge: costs under $2,500, so it can qualify for an immediate deduction under the de minimis rule if you meet its conditions.
- Carpet: costs over $2,500, so it can generally be written off in 2026 with 100% bonus depreciation. This assumes it’s eligible property acquired after January 19, 2025. Installing it in 2026 doesn’t on its own set the acquisition date.
A first-year write-off isn’t the same as a first-year tax saving. If these deductions push your rentals to a loss, the passive activity and at-risk rules may limit how much of that loss you can use against other income this year. How passive loss rules affect depreciation
Section 179 vs. Bonus Depreciation
2026 Section 179 Limits
The One Big Beautiful Bill Act roughly doubled these limits from 2025, and they now rise with inflation each year (Rev. Proc. 2025-32). Few landlords get close to them.
How to Claim It
Elect Section 179 on Form 4562, Part I, and file it with your return. You can claim it only for the year the property is placed in service, which means ready and available for its intended use. If you’re a calendar-year taxpayer claiming it for 2026, that has to happen by December 31, 2026. It doesn’t matter if you bought the item earlier. Keep the receipts, and records showing business use.
Keep Track of Every Improvement
Landlord Studio records every purchase and improvement against the right property, so you and your accountant can quickly sort what’s a repair, what’s depreciated and what might qualify for faster write-offs. At tax time, export a Schedule E report with everything in one place.