For real estate investors and business owners, bonus depreciation is one of the most powerful tax deductions in the entire code, and in 2026 it is better than it has been in years. After phasing down toward zero, 100% bonus depreciation is back, and this time it is permanent. The catch is the same as it always is with year-end planning: the deduction belongs to the tax year in which the property is placed in service, so the window to capture it for 2026 closes on December 31. What you do in the next few weeks determines whether you claim a large first-year deduction this year or wait another twelve months.
This guide explains exactly what bonus depreciation is in 2026, what qualifies, how it compares to Section 179, how to combine it with a cost segregation study, how it applies to vehicles, and, just as importantly, the traps that can quietly erase the benefit if you are not careful. Everything below reflects federal tax law in effect for the 2026 tax year, including the permanent changes made by the One Big Beautiful Bill Act (OBBBA), and every rule and figure has been verified against current statutes, Treasury regulations, and IRS guidance. It is educational rather than personalized advice, so when a move fits your situation, the right next step is a conversation about your actual numbers. You can book a discovery call with our team at any point.
What Is Bonus Depreciation?
Bonus depreciation, technically the additional first-year depreciation allowance under Section 168(k), lets a business deduct a large percentage of the cost of qualifying property in the year it is placed in service, instead of spreading that cost out over the asset’s normal recovery period. Ordinarily, if you buy $100,000 of qualifying equipment, you would depreciate it over five or seven years. With 100% bonus depreciation, you can deduct the full $100,000 in year one.
The appeal is the time value of money. A deduction today is worth more than the same deduction spread across the next decade, because it frees up cash now that you can reinvest, and because a dollar deducted this year is more valuable than a dollar deducted in 2034. For real estate investors specifically, bonus depreciation is the engine that makes a cost segregation study so valuable, because it is what turns the shorter-lived building components a study identifies into a first-year write-off. If you are new to the mechanics, our explainer on how rental property depreciation works is a useful foundation for everything that follows.
What Changed in 2026: 100% Bonus Depreciation Is Back and Permanent
Under the law that preceded the OBBBA, bonus depreciation was phasing out. It fell to 80% in 2023, 60% in 2024, and 40% in 2025, and was headed to 20% in 2026 before disappearing entirely. The OBBBA reversed that. For qualifying property acquired after January 19, 2025 and placed in service in 2026, the bonus depreciation rate is generally back to 100%, and the 100% rate is now permanent rather than scheduled to phase down again.
The acquisition date matters, and this is a detail that trips people up. Property that was under a binding written contract entered into before January 20, 2025 generally follows the older phase-down schedule, which means it receives only 20% bonus depreciation if placed in service in 2026 rather than 100%. In practice, almost everything you acquire and place in service this year will qualify for the full 100%, but if you are dealing with a long-running construction project or a contract signed in early 2025 or before, confirm which rule applies before you count on the larger deduction. For the full background on this change, see our deeper guide to bonus depreciation under the OBBBA.
What Property Qualifies for Bonus Depreciation
Not everything you buy is eligible, and understanding the boundaries is what separates a clean deduction from an audit problem.
The 20-year rule
Bonus depreciation applies to property that has a recovery period of 20 years or less under the Modified Accelerated Cost Recovery System, plus certain qualifying computer software and water utility property. In plain terms, that covers the kinds of assets real estate investors actually buy: appliances, furniture, carpeting and other flooring, equipment, and land improvements such as fencing, landscaping, and parking lot work. What it does not cover is the building itself. Residential rental buildings are depreciated over 27.5 years and commercial buildings over 39 years, both well beyond the 20-year ceiling, so the structure is not directly eligible for bonus depreciation. Neither is land, which is never depreciable at all.
New and used property both qualify
A common misconception is that bonus depreciation only applies to brand-new assets. It does not. Used property qualifies, as long as it is the first use by you, the taxpayer. The property cannot have been previously used by you or a predecessor who held a depreciable interest, it generally cannot be acquired from a related party, and it cannot come through a disqualifying carryover-basis transaction. For an investor buying a rental property with existing appliances and fixtures, or purchasing used equipment, this is good news: the components can still generate a first-year deduction.
Qualified Improvement Property
Qualified Improvement Property, or QIP, is an important category for commercial real estate. QIP is generally any improvement made to the interior of a nonresidential building after the building was first placed in service, excluding enlargements, elevators and escalators, and the internal structural framework. QIP is assigned a 15-year recovery period, which puts it under the 20-year ceiling, so it is eligible for 100% bonus depreciation when the acquisition and other Section 168(k) requirements are met. If you are renovating the interior of a commercial space, QIP treatment can convert what feels like a slow real-property write-off into a first-year deduction.
What does not qualify
Besides the building and land, property that is required to be depreciated under the Alternative Depreciation System (ADS) is not eligible for bonus depreciation. That exclusion matters in a specific situation discussed later: a real property business that elects out of the interest limitation must use ADS, and in doing so gives up bonus depreciation on its real property. Keeping the eligible and ineligible categories straight is one of the common depreciation mistakes that costs investors money or invites IRS scrutiny.
Bonus Depreciation vs. Section 179: Which One to Use
Bonus depreciation is often confused with Section 179 expensing, and while both let you deduct asset costs upfront, they work differently, and the differences matter for year-end planning.
Section 179 has a dollar cap. For 2026 the maximum Section 179 deduction is $2,560,000, and it begins to phase out once total qualifying purchases exceed $4,090,000. More importantly, Section 179 is limited to your aggregate taxable income from the active conduct of your trades or businesses, which means it cannot be used to create or increase a loss. If your business does not have enough income, the excess Section 179 deduction is carried forward to a future year rather than deducted now.
Bonus depreciation has neither limitation. There is no annual dollar cap, and there is no taxable-income limit, so bonus depreciation can reduce your taxable income below zero and create or increase a net operating loss. For a real estate investor who wants to generate a large paper loss, for example through cost segregation, this is the key distinction: bonus depreciation can produce the loss, while Section 179 generally cannot.
The two also interact in a set order. On the return, Section 179 is applied first, then bonus depreciation on the remaining basis, then regular MACRS depreciation on anything left. One nuance worth knowing is that the election out of bonus depreciation is made by class of property, not asset by asset. If you elect out, the election applies to all qualifying property in that class, such as all five-year property, placed in service that year. That all-or-nothing-by-class rule is easy to overlook and can produce a result you did not intend if you are not deliberate about it.
The Biggest Year-End Opportunity: Cost Segregation Plus Bonus Depreciation
For real estate investors, the single most powerful use of bonus depreciation is pairing it with a cost segregation study. On its own, a building is depreciated slowly over 27.5 or 39 years and is not eligible for bonus depreciation. A cost segregation study changes that by reclassifying portions of the property, such as flooring, cabinetry, specialized electrical and plumbing tied to equipment, and exterior land improvements, into shorter 5-, 7-, and 15-year recovery periods. Because those shorter-lived components fall under the 20-year ceiling, they become eligible for 100% bonus depreciation, which means a meaningful share of a building’s cost can be deducted in the first year rather than over decades.
The strategy is not limited to buildings you purchased this year. You can commission a study on a property you have owned for years and claim the catch-up depreciation in the current year without amending prior returns. That makes cost segregation a flexible year-end lever, not just a closing-day decision. It is not free, however, and it is not right for every property, so for a smaller rental it is worth thinking carefully about whether cost segregation is worth it before you commit, and our walkthrough of a real cost segregation study shows how the math tends to shake out. If you want a study reflected on your 2026 return, start the process now, because a quality engineering-based study takes time to complete. Our pillar guide to depreciation and cost segregation ties the whole approach together.
A simplified example shows the mechanics. Suppose an investor buys a rental building for $1,000,000, excluding the non-depreciable land. Without a study, that building is depreciated straight-line over 27.5 years, roughly $36,000 a year, with no bonus depreciation on the structure. A cost segregation study might reclassify a portion of that basis into 5-, 7-, and 15-year components; how much is reclassified varies significantly by property type and must be determined by an engineering-based study rather than assumed. Whatever is reclassified into those shorter-lived categories becomes eligible for 100% bonus depreciation and can be deducted in the first year instead of over decades. The numbers here are illustrative, not a promise: your actual deduction depends on the study’s findings, the deduction’s value depends on your tax bracket and whether the passive activity rules let you use it this year, and recapture will apply when you sell. The point is the shape of the opportunity, which is why an analysis of the specific property is the right starting point. Our guide on how to analyze a rental property walks through that kind of evaluation.
Bonus Depreciation on Business Vehicles
Vehicles are one of the most common, and most misunderstood, bonus depreciation opportunities. The rules split sharply based on weight.
Passenger automobiles are “listed property” subject to the Section 280F luxury-auto caps, which limit how much depreciation you can claim in the first year no matter how expensive the car is. For a passenger automobile placed in service in 2026, the first-year cap is $20,300 if bonus depreciation applies and $12,300 if it does not. So even with 100% bonus depreciation, a typical car is capped at $20,300 of first-year depreciation.
Heavier vehicles are treated very differently. A vehicle with a gross vehicle weight rating over 6,000 pounds is generally outside the Section 280F passenger-auto caps. A qualifying heavy SUV, truck, or van acquired and placed in service after January 19, 2025 and used more than 50% for business can generally take 100% bonus depreciation on its depreciable business-use basis. This is why you hear investors talk about buying a heavy vehicle before year-end: the first-year deduction can be dramatically larger than on a passenger car.
Two conditions deserve emphasis. First, the vehicle must be used more than 50% for qualified business use, and you deduct only the business-use percentage, so a vehicle used 70% for business yields bonus depreciation on 70% of its cost. Second, if business use later drops to 50% or less, the tax code requires recapture: you include the excess depreciation (the amount you claimed above what straight-line ADS would have allowed) back into ordinary income, increase the vehicle’s basis by that amount, and depreciate it under ADS going forward. Good mileage logs and contemporaneous records are what make a heavy-vehicle deduction defensible, so treat documentation as part of the strategy, not an afterthought.
How to Actually Use the Deduction: The Passive Activity Trap
Here is the mistake that undoes more bonus depreciation plans than any other. You run a cost segregation study, generate a large first-year loss, and then discover you cannot use it this year. For most real estate investors, rental activities are passive by default, and passive losses can only offset passive income, not your wages or business profits. A big bonus depreciation loss that is trapped as a suspended passive loss still carries forward, but it does not deliver the current-year tax savings you were counting on.
There are legitimate ways through this, and they have to be in place by year-end. If you actively participate in a rental, you may be able to use up to $25,000 of passive rental losses against other income, though that special allowance phases out between $100,000 and $150,000 of modified adjusted gross income and disappears above $150,000. Beyond that, the two main paths to non-passive treatment are qualifying as a real estate professional and materially participating, or using the short-term rental approach. Meeting real estate professional status requires more than 750 hours in real property trades or businesses and more than half of your personal services there, plus material participation; our guide on how to qualify covers the tests. Alternatively, the short-term rental strategy can make losses non-passive without that status when the average guest stay is seven days or less and you materially participate. The lesson is simple: decide how you will use the loss before you create it, not in April when it is too late.
Your Bonus Depreciation Checklist Before December 31
With the rules in hand, here is what to actually do in the weeks before year-end to capture bonus depreciation for 2026.
First, place qualifying assets in service, not just order them. The deduction belongs to the year the property is ready and available for its intended use, so an appliance, equipment, or vehicle that arrives but is not installed and in use by December 31 generally does not qualify for 2026. If you are counting on a first-year deduction, build in time for delivery and installation.
Second, if you bought or substantially improved a property this year, or own one you have never cost-segregated, get a cost segregation study underway now so it can be reflected on your 2026 return. Third, decide deliberately between bonus depreciation and Section 179 based on your income picture and whether you want to create a loss, and confirm whether you want to elect out of bonus for any class of property. Fourth, if a heavy business vehicle fits a genuine business need, acquire it, place it in service, and establish its business use before year-end, with a log to prove it. Finally, project your taxable income and confirm you can actually use the deduction this year given the passive activity rules, because a deduction you cannot use yet is worth far less than one you can. This checklist pairs naturally with our broader year-end tax planning checklist for real estate investors.
The Catch: Recapture, Interest Limits, and State Conformity
Bonus depreciation is powerful, but it is a deferral and a rate strategy, not free money, and three issues deserve clear eyes before you commit.
The first is depreciation recapture when you sell. The deductions you accelerate reduce your basis and increase your gain on sale. For Section 1245 property, which includes equipment and the shorter-lived components identified in a cost segregation study, gain is recaptured as ordinary income up to the total depreciation you took, including bonus depreciation. For real property, prior depreciation is generally unrecaptured Section 1250 gain taxed at a maximum federal rate of 25%. Cost segregation can shift some of your eventual gain into the ordinary recapture category. For many investors the first-year benefit still wins, especially if they plan to exchange rather than sell, and a 1031 exchange can defer that recapture rather than trigger it, but you should plan the exit, not just the deduction.
The second is the business interest limitation under Section 163(j). A real property trade or business can elect out of that limitation, but in exchange it must depreciate its nonresidential real property, residential rental property, and qualified improvement property using ADS, and ADS property is not eligible for bonus depreciation. Highly leveraged investors sometimes have to weigh the interest deduction against the depreciation deduction; you cannot always maximize both.
The third is state conformity. Bonus depreciation is a federal provision, and many states do not conform to it. In a non-conforming state, you may add the bonus depreciation back for state purposes and recover it over time, so your state taxable income can differ from your federal number. Conformity is specific to each state and can change year to year, so the state impact needs to be checked for your situation rather than assumed.
When to Bring in a Real Estate CPA
Bonus depreciation rewards investors who plan, and it punishes those who act without understanding the interactions. The deduction itself is straightforward; the decisions around it, whether to run a cost segregation study, how to avoid trapping the loss under the passive activity rules, how a heavy-vehicle purchase affects recapture, whether to elect out of bonus or out of the interest limitation, and how your state treats all of it, are where a specialist earns their fee many times over. This is also why we tell investors that real estate tax planning should not start in April: by filing season the window to place assets in service and run a study has already closed, which is the whole difference between tax planning and tax preparation. Your entity structure can shape the result too, since how a loss flows through to you depends on how you hold the property. The difference between a good outcome and a costly mistake often comes down to a few decisions made before December 31.
At Malabute & Company CPAs, real estate tax is the entire practice. We work exclusively with real estate investors, operators, and developers, and we help clients capture deductions like bonus depreciation while steering clear of the traps that quietly erase the benefit. If you want to make sure you are using this correctly before the tax year closes, the most useful next step is to talk through your actual numbers with someone who does this full time. You can book a discovery call and we will build a plan while there is still time to act on it. If you are not sure whether you need specialized help yet, these are the signs it is time to work with a real estate CPA.
Frequently Asked Questions
Is bonus depreciation really 100% in 2026?
Yes. Under the One Big Beautiful Bill Act, 100% bonus depreciation was restored and made permanent for qualifying property acquired after January 19, 2025 and placed in service in 2026. Property that was under a binding written contract entered into before January 20, 2025 generally follows the older phase-down schedule, which is 20% for 2026, so the acquisition date determines the rate.
What is the deadline to claim bonus depreciation for 2026?
The property must be placed in service, meaning ready and available for its intended use, by December 31, 2026. Simply ordering or paying for an asset is not enough; if it is not installed and in use by year-end, the deduction generally moves to 2027.
Can I take bonus depreciation on a rental property building?
Not on the building itself, because residential rental property (27.5 years) and commercial property (39 years) exceed the 20-year recovery-period ceiling. However, a cost segregation study can reclassify parts of the property into 5-, 7-, and 15-year components that are eligible for 100% bonus depreciation, so you can effectively accelerate a large portion of the building’s cost.
What is the difference between bonus depreciation and Section 179?
Section 179 has a dollar cap ($2,560,000 for 2026, phasing out above $4,090,000 of purchases) and is limited to your business taxable income, so it cannot create a loss. Bonus depreciation has no dollar cap and no income limit, so it can reduce income below zero and create a net operating loss. Section 179 is applied first, then bonus depreciation on the remaining basis.
How much bonus depreciation can I take on a vehicle in 2026?
A passenger automobile placed in service in 2026 is capped at $20,300 of first-year depreciation when bonus applies, or $12,300 without it. A vehicle rated over 6,000 pounds gross vehicle weight is generally outside those caps, so a qualifying heavy vehicle used more than 50% for business can take 100% bonus depreciation on its business-use portion, subject to the business-use and recapture rules.
Do I have to take bonus depreciation?
No. You can elect out, but the election is made by class of property and applies to all qualifying property in that class placed in service during the year, not asset by asset. Electing out can make sense when you expect to be in a higher tax bracket in future years and would rather spread the deductions out.
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