If you are hearing that “100% bonus depreciation is back” and wondering what that means for your 2026 tax bill, the basic answer is that many businesses can once again deduct the full cost of qualifying property in the first year.
But the part that trips people up is timing.
This is not just a generic “2026 rule.” Under current law, 100% bonus depreciation was restored for most qualifying property acquired after January 19, 2025 and placed in service after that date. So for a 2026 return, the real questions are what you bought, when you acquired it, when it was actually placed in service, and whether the property falls within Section 168(k). (IRS)
TL;DR
For most qualifying business property acquired after January 19, 2025 and placed in service after that date, the federal bonus depreciation rate is back to 100%.
That means you can generally deduct the full cost in year one instead of depreciating it over 5, 7, 15, or other recovery periods.
The rule can apply to many kinds of equipment, machinery, furniture, computers, certain vehicles, and Qualified Improvement Property. It can also apply to used property if it is truly new to you and not acquired from a related party. But the details still matter – especially the acquisition date, the placed-in-service date, state conformity, and whether Section 179 is a better fit. (IRS)
What Bonus Depreciation Has Looked Like in Recent Years
Bonus depreciation did not start with TCJA. But TCJA made it much more aggressive by allowing a 100% first-year deduction for qualifying property placed in service from 2018 through 2022, and by expanding eligibility to many types of used property as well. After that, the TCJA version was scheduled to phase down: 80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, and 0% in 2027. Before OBBBA reversed course, bonus depreciation was on its way back to complete elimination. (IRS)
OBBBA stopped that scheduled phase-down and restored 100% bonus depreciation for most qualifying property acquired and placed in service after January 19, 2025, rather than allowing the deduction to continue shrinking toward elimination. (IRS)
What 100% Bonus Depreciation Means for Your Business
Bonus depreciation lets you accelerate cost recovery on qualifying property. When the bonus rate is 100%, you deduct the full eligible basis in year one rather than spreading that deduction over the asset’s normal MACRS life.
That is why bonus depreciation can create such a large immediate tax benefit for businesses buying equipment, vehicles, furniture, improvements, or cost-seg-eligible real estate components. (IRS)
A Real-Dollar Example
A $100,000 qualifying equipment purchase can generate a $100,000 first-year federal deduction. At a 21% C-corp rate, that is roughly $21,000 of tax savings. At a 37% marginal individual rate, it is roughly $37,000.
The exact benefit depends on the taxpayer’s overall return, including entity type, income level, and whether the deduction offsets current-year income or creates an NOL. (IRS)
What Changed Under the New Law
The old phase-down schedule no longer applies to most qualifying property acquired and placed in service after January 19, 2025.
The IRS states that qualifying depreciable property acquired after that date is eligible for a permanent 100% additional first-year depreciation deduction, assuming the other normal Section 168(k) rules are satisfied. Property placed in service after December 31, 2024 and before January 20, 2025 generally remains under the old phase-down rules – 40% for most qualifying property and 60% for certain long-production-period property and certain aircraft. (IRS)
That timing rule is the biggest trap. It is not enough to say “the asset was placed in service in 2026, so it gets 100%.” Acquisition date still matters. If property was acquired too early, it may still be tied to the old phase-down rules even if installation or service began later. This is the sort of timing mismatch that can easily get missed when a purchase stretches across calendar years. (IRS)
IRS Notice 2026-11
Notice 2026-11 is the key interim guidance piece under the amended bonus depreciation rules. It says taxpayers may generally continue relying on the existing Section 168(k) regulations, but substituting 100% for the otherwise applicable percentage for qualifying property acquired after January 19, 2025. It also addresses elections, including a transition election for the first taxable year ending after January 19, 2025 that allows taxpayers to claim 40% instead of 100% for most qualifying property, or 60% instead of 100% for certain long-production-period property and certain aircraft. That can matter for taxpayers who do not want to accelerate the full deduction into that transition year. (IRS)
From a practical standpoint, the notice matters because it confirms that the restored 100% rate does not wipe away the old framework. You still need to analyze acquisition, placed-in-service timing, original-use or used-property rules, and any elections tied to the return. The law changed, but the compliance work did not disappear. (IRS)
What Property Qualifies for 100% Bonus Depreciation?
In general, bonus depreciation applies to qualifying property with a recovery period of 20 years or less, certain computer software, water utility property, specified plants, and Qualified Improvement Property. In ordinary business terms, that often means machinery, equipment, office furniture, computers, certain vehicles, and shorter-life property identified through cost segregation. (IRS)
The “New-to-You” Rule for Used Property
Used property can qualify for bonus depreciation. That was one of TCJA’s biggest expansions and continues under the current framework. But the property still has to be new to the taxpayer, and it generally cannot be acquired from a related party or through certain carryover-basis transactions.
So a used machine or truck bought from an unrelated seller can still qualify, while moving property around inside a related-party structure usually will not. (IRS)
Qualified Improvement Property
Qualified Improvement Property remains one of the biggest real-estate-related opportunities. QIP generally means improvements made by the taxpayer to the interior of nonresidential real property after the building was first placed in service. It does not include enlargements, elevators or escalators, or the internal structural framework.
Because QIP is treated as 15-year property, it is generally eligible for bonus depreciation. (IRS)
Qualified Production Property
Qualified Production Property is a separate special rule under Section 168(n), not just ordinary bonus depreciation under Section 168(k). IRS Notice 2026-16 provides interim guidance on that regime.
In general, qualified production property must be placed in service after July 4, 2025 and before January 1, 2031, and construction generally must begin after January 19, 2025 and before January 1, 2029, subject to the detailed rules in the notice.
This is especially relevant for certain manufacturing and production facilities, but it should be analyzed separately from ordinary bonus depreciation because it is its own temporary incentive with its own definitions, elections, and recapture rules. (IRS)
What Does Not Qualify
Land does not qualify for bonus depreciation because land is not depreciable property.
Most buildings do not qualify under the normal bonus depreciation rules, not because buildings are never depreciable, but because they are usually 27.5-year or 39-year property and therefore fall outside the standard 20-year-or-less rule. That means the building itself is usually out, even though certain shorter-life components may still qualify through cost segregation. And while interior improvements to nonresidential buildings may qualify as QIP, residential rental property generally does not.
In residential real estate, bonus depreciation is more often created through cost segregation of shorter-life components than through QIP. Property used predominantly outside the United States and certain related-party acquisitions can also be excluded. (IRS)
How to Claim Bonus Depreciation in 2026
Step 1 – Confirm the Acquisition Date and the Placed-in-Service Date
These are not the same thing, and both matter. Acquisition date helps determine whether the property falls under the restored 100% rule or the old phase-down rules. Placed in service generally means the asset is ready and available for its intended use. A 2026 service date by itself does not automatically solve an early-acquisition problem. (IRS)
In practice, you want contracts, invoices, delivery records, installation logs, and anything else that helps show when the property was acquired and when it was actually operational. If the deduction is large, this is not something to paper over with vague bookkeeping notes. (IRS)
Step 2 – Identify Every Eligible Asset
Businesses often focus only on obvious large purchases and miss other bonus-eligible assets. Depending on the facts, that can include machinery, computers, office furniture, certain software, certain heavy vehicles, security systems and land improvements picked up through cost segregation, and interior improvements that qualify as QIP. (IRS)
Step 3 – Consider a Cost Segregation Study
If you own commercial or rental real estate, a cost segregation study can reclassify parts of the property into shorter-life categories, such as 5-year, 7-year, or 15-year property, that may qualify for bonus depreciation. The building itself usually does not qualify, but a defensible study can carve out components that do. That is why bonus depreciation and cost segregation are so often paired together in real estate tax planning. (IRS)
Step 4 – Report It Properly on Form 4562
Bonus depreciation is generally claimed on Form 4562. The real work is not filling out the form – it is making sure the underlying asset classification, basis, and elections are correct before the numbers ever get there. (IRS)
Step 5 – Maintain Proper Documentation
The larger the deduction, the more important the paper trail. You should be able to show what was purchased, when it was acquired, when it was placed in service, why it qualifies, and how the basis was determined. That is especially important with used property, cost-segregation studies, self-constructed property, and projects that stretch across multiple years. (IRS)
Bonus Depreciation vs. Section 179 in 2026
Both bonus depreciation and Section 179 can create immediate expensing, but they work differently. For tax years beginning in 2026, the maximum Section 179 deduction is $2,560,000, and that limit begins phasing out once the cost of Section 179 property placed in service exceeds $4,090,000. Section 179 also has special limits for certain vehicles. For example, many SUVs are capped at $32,000 in 2026. Bonus depreciation does not have a comparable overall dollar cap. (IRS)
Bonus depreciation is often the better tool when the business is buying a large amount of qualifying property, when the taxpayer wants the largest possible current-year deduction, or when a cost segregation study has created a big pool of shorter-life assets. It can also create or increase an NOL, which Section 179 generally cannot do because Section 179 is limited by taxable income from the active conduct of a trade or business. (IRS)
Section 179 is often better when you want tighter control over which assets get expensed, when you do not want to create a large NOL, or when state conformity makes bonus depreciation less attractive. Section 179 can be allocated asset by asset. Bonus depreciation is much less precise because it generally applies automatically to all assets in a class unless you elect out. (IRS)
When 100% Bonus Depreciation Is Not the Best Move
Even though 100% sounds ideal, there are situations where accelerating the deduction is not the best long-term tax play.
If the taxpayer expects much higher income later, it may be smarter to preserve depreciation deductions for future years rather than burning them in a lower-value year. Immediate expensing is powerful, but it is not automatically optimal. That is a planning judgment, not a mechanical rule. (IRS)
There is also the recapture issue. When you front-load deductions and later sell or dispose of the asset, part of that earlier benefit can come back as ordinary income through depreciation recapture. That is why bonus depreciation is often more about timing than permanent tax savings – you are pulling deductions forward rather than creating new ones. And depending on how soon you plan to sell the property, that acceleration can either be a major benefit or a costly tradeoff. (IRS)
State Tax Decoupling
State conformity can materially change the result. Many states do not fully follow federal bonus depreciation and instead require their own depreciation adjustments, addbacks, or recovery schedules. That means a taxpayer can get a strong federal benefit and a much weaker state result at the same time.
Anyone doing serious year-end planning needs to model both the federal and state consequences rather than assuming the same answer carries across returns. (IRS)
Frequently Asked Questions
Is 100% bonus depreciation really permanent now?
Under current federal law, yes. The 100% rate was restored on a permanent basis for most qualifying property acquired after January 19, 2025. But “permanent” in tax law always means until Congress changes it again. (IRS)
What if I bought equipment in late 2024 or early 2025?
That is where the timing trap lives. Property acquired too early can still be tied to the older phase-down rules even if it is placed in service later. And property placed in service after December 31, 2024 and before January 20, 2025 generally remains under the old 40% rule, or 60% for certain long-production-period property and certain aircraft. (IRS)
Can I use bonus depreciation if my business has a loss?
Yes. Bonus depreciation can create or increase an NOL. That is one of the biggest practical differences between bonus depreciation and Section 179. (IRS)
Can I combine bonus depreciation and Section 179?
Yes. In many cases taxpayers use Section 179 on selected assets and then apply bonus depreciation to other qualifying property. The mechanics and optimal sequence depend on the taxpayer’s income, the asset mix, and state conformity. (IRS)
What if I already filed and missed the deduction?
That depends on what exactly was missed. In some cases the fix may involve an amended return. In others, it may involve an accounting method change analysis. The right answer depends on whether the issue was a missed election, an impermissible method, or a computational error. (IRS)
Your 2026 Bonus Depreciation Checklist
Before filing, confirm that the property was acquired after January 19, 2025, that it was actually placed in service in 2026, that it falls into an eligible category, and that you understand whether your state follows the federal result. Those four questions alone will catch a lot of the common errors. (IRS)
You should also have the support ready: invoices, purchase agreements, delivery and installation records, fixed asset schedules, cost segregation reports where relevant, and support for any elections made with the return. If the deduction is large, the file should tell the story cleanly without requiring anyone to guess what happened. (IRS)
Final Thoughts
100% bonus depreciation is back, but the clean summary is this: before OBBBA, it was already shrinking and heading toward 0%. OBBBA stopped the scheduled phase-down and restored 100% bonus depreciation for most qualifying property acquired after January 19, 2025. That makes it extremely valuable again on 2026 returns. But the tax result still depends on asset type, timing, elections, state conformity, and whether immediate expensing actually fits the taxpayer’s broader plan. (IRS)
The goal is not just to claim the deduction. It is to claim the right deduction, in the right year, with the right support, and without creating a worse tax posture somewhere else. (IRS)
Get in touch with us if you need advice for your bonus deduction.
