Bonus Depreciation in 2026: Where the Law Stands for Real Estate Investors

If you've been searching "is bonus depreciation back to 100% in 2026," the short answer is yes, and it's a bigger deal for real estate investors than most people realize.

Here's the backstory, because it matters for how you plan. Under the 2017 Tax Cuts and Jobs Act, bonus depreciation under §168(k) let you write off 100% of qualifying property in the year you placed it in service. Then it started phasing down: 80% for 2023, 60% for 2024, on a glide path to zero by 2027. A lot of investors spent 2024 assuming they'd caught the tail end of a good thing.

Then the One Big Beautiful Bill Act, signed in July 2025, changed the math. It made 100% bonus depreciation permanent for qualifying property acquired and placed in service after January 19, 2025. Not a temporary extension, not another phase-down. Permanent, as the law reads today.

So if you buy a rental property in 2026 and run a cost segregation study, the short-life components that study identifies can be written off in full in year one.

What does bonus depreciation actually do for a rental?

It lets you front-load depreciation on the pieces of a building that don't have to be depreciated over 27.5 or 39 years.

A residential rental building itself is 27.5-year property, and commercial is 39-year. Neither of those qualifies for bonus depreciation, because bonus only applies to property with a recovery period of 20 years or less under §168(k)(2). That's the whole reason cost segregation exists. A cost seg study breaks your purchase into its parts: the carpet, the appliances, the cabinetry, the specialized electrical, the parking lot, the landscaping. Those pieces land in 5-year, 7-year, and 15-year buckets, and everything 20 years or under is eligible for the 100% write-off.

On a typical residential purchase, a study might reclassify somewhere between 20% and 30% of the building's depreciable basis into those short-life categories. On a commercial property with a lot of specialized buildout, it can run higher. So on a $1 million building (excluding land, which you never depreciate), pulling $250,000 into short-life property and bonusing it means a quarter-million-dollar deduction in year one instead of spread across three decades.

That's the appeal. Now the caveats, because this is where people get themselves in trouble.

Can you actually use the loss?

This is the question that separates a good plan from a paper deduction, and the answer is usually "it depends on whether you're a real estate professional."

Rental real estate is passive by default under §469. A big bonus depreciation deduction creates a passive loss, and passive losses can only offset passive income. They don't offset your W-2 wages or your business income. If you're a surgeon making $600,000 and you buy a rental and generate a $250,000 paper loss, that loss sits suspended, carrying forward, doing nothing for your current-year tax bill.

The way around that is real estate professional status under §469(c)(7). You have to spend more than 750 hours a year in real property trades or businesses, and more than half of your total personal-service time has to be in those activities, and you have to materially participate. Clear all three and your rental losses turn non-passive, free to offset other income. For a lot of high earners with a full-time job, that first-half-of-your-time test is a wall they can't get over.

There's a middle path a lot of investors miss: the short-term rental. If the average guest stay is seven days or less, the activity isn't a rental under the §469 rules at all (Reg. §1.469-1T(e)(3)(ii)(A)), so real estate professional status doesn't even enter the picture. Materially participate in the STR, and the loss is non-passive. That's why you see so many high-income professionals buying beach houses and running them on the short-term platforms. The tax mechanics are real, though the participation has to be real too.

I had a client, an anesthesiologist, married filing jointly, who bought a lakefront place in late 2025 and ran it as a short-term rental. Cost seg pulled about $310,000 into bonusable property. He and his spouse logged their hours honestly, self-managed the bookings, handled the turnovers themselves in the early months, and cleared material participation without any real estate professional gymnastics. That $310,000 offset a chunk of his practice income directly. The complication was that he'd also been eyeing a property-management company for the following year, and once you hand off management, the material participation case gets a lot harder to defend. We talked through the tradeoff before he signed anything.

What's the catch nobody mentions?

Depreciation recapture. You're not getting free money, you're getting a timing shift, and the IRS collects on the back end.

When you sell, the depreciation you took gets recaptured. The short-life personal property (the 5- and 7-year stuff) is recaptured as ordinary income under §1245, up to your ordinary rate. The real property portion falls under §1250 and gets taxed at a maximum 25% unrecaptured §1250 gain rate. So the deduction you took at, say, 37% today can come back at ordinary or 25% rates later. If you plan to hold long term or roll into a §1031 exchange and defer, the arithmetic favors you. If you're a quick flipper, bonus depreciation plus recapture can be close to a wash, and the cost seg fee eats into whatever's left.

The other thing worth saying out loud: a cost segregation study costs money, usually a few thousand dollars for a residential property and more for commercial. It only makes sense when the basis is large enough and you can actually use the loss. Running a study on a $180,000 rental when the loss is going to sit suspended for years is spending money to accelerate a benefit you can't touch.

Does this change anything if you bought in 2023 or 2024?

Possibly, and this is where a look-back is worth a conversation. If you placed a property in service during the phase-down years and never ran a cost seg study, you can still do one and catch up the missed depreciation with a §481(a) adjustment via Form 3115, the change in accounting method, without amending prior returns.

The bonus percentage that applies is the one in effect when the property was placed in service, so 2023 property catches up at 80% and 2024 at 60%. You don't get the new permanent 100% rate retroactively. But catching up several years of accelerated depreciation in a single current-year deduction can still be substantial, and it's a common move once a property has appreciated and the owner's income has climbed into a bracket where the deduction bites.

Everything here turns on your specific facts: your income, your participation, your hold period, your state. Bonus depreciation is a powerful tool and a genuinely permanent one as the law reads in 2026, but it rewards planning before you buy, not after. Talk it through with your tax advisor, and if entity structure or a §1031 exchange is in the picture, loop in your attorney too.

Sources

• IRC §168(k) (bonus depreciation, including the 20-year recovery period requirement)
• One Big Beautiful Bill Act (July 2025), restoring 100% bonus depreciation for property acquired and placed in service after January 19, 2025
• IRC §469 and §469(c)(7) (passive activity loss rules and real estate professional status)
• Reg. §1.469-1T(e)(3)(ii)(A) (seven-day average stay exception to the rental definition)
• IRC §1245 and §1250 (depreciation recapture)
• IRC §481(a) and Form 3115 (change in accounting method / catch-up depreciation)
• IRC §1031 (like-kind exchange deferral)