IRS Notice 2026-11 Explained: What Permanent 100% Bonus Depreciation Means for Rental Property Investors
The game just changed again for rental property investors. After years of watching bonus depreciation phase down from 100% to 80%, 60%, 40%, and finally 20%, Congress reversed course in a significant way. The One Big Beautiful Bill Act (OBBBA) permanently restored 100% bonus depreciation for qualifying property acquired after January 19, 2025. Then, in early 2026, the IRS issued Notice 2026-11 to clarify exactly how the new rules apply in practice.
If you own rental property, this is not abstract tax policy. It is a direct, concrete opportunity to eliminate a significant portion of your tax liability in the year you acquire or improve a property. This article breaks down what IRS Notice 2026-11 says, what it means for cost segregation studies, and the specific planning moves you need to consider right now.
Background: How Bonus Depreciation Got Here
To understand why this moment matters, it helps to trace the arc. The Tax Cuts and Jobs Act of 2017 (TCJA) introduced 100% bonus depreciation under IRC Section 168(k), allowing investors to immediately deduct the full cost of qualifying personal property and land improvements in the year they were placed in service. This was transformative for real estate investors who combined it with cost segregation studies to reclassify building components from 27.5-year or 39-year property into 5-year, 7-year, or 15-year property.
But the TCJA also baked in a phase-down schedule. Starting in 2023, the bonus depreciation rate began declining: 80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, and a full phase-out after 2026. Investors who had built tax strategies around 100% first-year write-offs had to recalibrate. Many still pursued cost segregation because even accelerated MACRS depreciation over 5, 7, and 15-year periods is far better than straight-line over 27.5 years. But the immediate, year-one impact was substantially reduced.
The OBBBA changed all of that. By making 100% bonus depreciation permanent and retroactively effective for property acquired after January 19, 2025, Congress eliminated the phase-down problem entirely. Now the question is simply: does the property qualify, and are you following the rules correctly?
What IRS Notice 2026-11 Actually Says
IRS Notice 2026-11 is the IRS's interim guidance document explaining how to apply the OBBBA's bonus depreciation rules while formal regulations are developed. The notice is important because it fills in practical details that the statute itself does not fully address. Here are the core provisions every rental property investor should understand.
First, the notice confirms that taxpayers should continue using the existing framework established under Treasury Regulation Section 1.168(k)-2, the guidance originally issued under the TCJA. The OBBBA did not reinvent the wheel. Instead, it updated the effective dates and depreciation percentages within the existing structure. The acquisition date cutoff moved from September 27, 2017 under the TCJA, to January 19, 2025 under the OBBBA. The placed-in-service date cutoff moved from September 28, 2017 to January 20, 2025. In practical terms, this means property that passes those timing tests is now eligible for 100% bonus depreciation with no phase-down and no sunset.
Second, the notice addresses the transition period for properties acquired or placed in service during the TCJA phase-down years (2023 through early 2025). This is a nuanced area that will matter for investors who purchased property in those years and are now assessing whether they can benefit from the new rules.
Third, and very importantly for investors with construction projects, the notice confirms the availability of the component election. This election allows you to claim 100% bonus depreciation on individual qualifying components of a larger self-constructed project, even when the overall project does not meet the January 19, 2025 acquisition date cutoff.
The Critical Date: January 19, 2025
If there is one date to engrave in your memory from IRS Notice 2026-11, it is January 19, 2025. Both the acquisition date and the placed-in-service date must fall on or after that date for a property to qualify for the full 100% bonus depreciation under the OBBBA. Getting these dates right is essential because the IRS will scrutinize them closely in any examination.
For most straightforward purchases, the acquisition date is when a binding written contract to purchase the property was entered into. If you signed a purchase agreement and earnest money contract after January 19, 2025, and closed and placed the property in service after January 20, 2025, you are squarely within the OBBBA framework. The full components identified by a cost segregation study would be eligible for 100% immediate deduction.
For properties acquired before January 19, 2025, the TCJA rules apply to the acquisition as a whole, which means the phase-down percentages apply. However, as we discuss in the next section, the component election may salvage 100% bonus depreciation on specific elements of those properties.
There is also a transition year election available for the first tax year ending after January 19, 2025. Taxpayers may elect to take 40% bonus depreciation (rather than 100%) on qualified property placed in service during that year. This election might be useful in specific circumstances where a taxpayer expects higher income in future years, or where state tax conformity issues make a smaller federal deduction strategically preferable. For most investors, though, the default 100% deduction will be the better choice.
The Component Election: A Major Opportunity for Construction Projects
The component election is one of the most underutilized provisions in bonus depreciation planning, and IRS Notice 2026-11 confirms it remains available under the OBBBA framework. This election matters most for two groups: investors who are building new construction properties, and investors who are undertaking significant renovations or additions to existing properties.
Here is the core concept. When you construct a building, the overall project may have started before January 19, 2025, which would place the entire project under the TCJA phase-down rules. However, individual components of that building can be treated separately if those specific components were acquired (or if their construction began) after January 19, 2025. By making the component election on your timely filed tax return for the year the property is placed in service, you can claim 100% bonus depreciation on those post-cutoff components while the rest of the project follows the TCJA phase-down schedule.
For a new construction rental property, this can represent a substantial dollar amount. Think about everything that gets installed in the final months of a construction project: specialty lighting systems, appliances, landscaping, site improvements, furniture, and equipment. If those items were ordered and acquired after January 19, 2025, they may qualify as individual components eligible for 100% bonus depreciation even if the overall construction project predates the OBBBA cutoff.
This is precisely where a well-executed cost segregation study becomes indispensable. The study identifies and values each component separately, documents the acquisition dates, and provides the asset-level detail needed to support the component election. Without that documentation, you are essentially leaving a significant deduction on the table.
What This Means for Your Cost Segregation Strategy
The restoration of permanent 100% bonus depreciation is not just good news in isolation. It fundamentally changes the math of cost segregation and creates a compounding effect that makes studies more valuable than at any point since 2022.
Consider a typical single-family rental purchased for $450,000, with the land allocated at $75,000, leaving $375,000 in depreciable basis. Under a cost segregation study, it is common to identify somewhere between 20% and 35% of the depreciable basis as 5-year or 15-year property. For this property, say the study identifies $90,000 in components eligible for bonus depreciation.
Under the old 20% bonus depreciation rate that applied in 2026 before the OBBBA, you would have been able to deduct $18,000 immediately as bonus depreciation on those components, with the remaining $72,000 depreciated over 5 or 15 years. At a combined federal and state marginal rate of 37%, that was a year-one tax benefit from bonus depreciation of roughly $6,660.
Under the OBBBA with 100% bonus depreciation, the entire $90,000 is deducted in year one. At the same 37% rate, the year-one tax benefit from bonus depreciation alone is $33,300. That is roughly five times the benefit available just months earlier under the phase-down schedule. And this does not count the regular MACRS depreciation on the remaining components, which continues to provide front-loaded deductions over 5, 7, and 15-year recovery periods.
For higher-value properties, the numbers scale accordingly. On a $1.2 million multifamily acquisition with $250,000 in bonus-eligible components, the year-one federal tax savings from 100% bonus depreciation at a 37% rate would be approximately $92,500. That kind of first-year deduction can substantially offset or eliminate the income taxes on significant passive income, W-2 income (for qualifying short-term rental operators), or capital gains from other investments.
The Passive Activity Rules Still Apply
One important caution: the magnitude of the depreciation deductions that 100% bonus depreciation creates through cost segregation can exceed your rental income, producing a tax loss on paper. Whether you can use that loss to offset other income depends on your situation under the passive activity rules of IRC Section 469.
For long-term rental investors, the default rule is that rental losses are passive and can only offset passive income, not wages or business income. There are limited exceptions, including the $25,000 rental loss allowance for taxpayers who actively participate and have modified adjusted gross income below $100,000 (phased out between $100,000 and $150,000).
For short-term rental investors who materially participate in their rental activity and meet the specific requirements, the losses may be treated as non-passive and used to offset other income including W-2 wages. This is what is commonly called the STR loophole, and it becomes dramatically more powerful when combined with 100% bonus depreciation from a cost segregation study.
Real estate professionals under IRC Section 469(c)(7) represent another category of investors who can potentially use rental losses against non-passive income. The qualification requirements are strict (more than 750 hours per year in real property trades or businesses where you materially participate, and more than half your working time in those activities), but for qualifying investors the benefit of pairing real estate professional status with 100% bonus depreciation cost segregation is substantial.
Work with a qualified CPA before assuming you can apply large depreciation losses against your ordinary income. The analysis depends heavily on your specific facts.
Depreciation Recapture Is Still a Factor
Permanent 100% bonus depreciation is genuinely excellent news for rental property investors, but it does not eliminate the depreciation recapture issue. When you sell a property where you have taken accelerated depreciation, IRC Section 1245 recapture applies to the personal property components (the 5-year and 7-year assets), taxed as ordinary income up to your marginal rate. The 15-year land improvements recapture at 25% under Section 1250 unrecaptured gain rules.
This means that some portion of the tax savings you capture today through bonus depreciation will eventually come back as recapture income on sale. For many investors, this is an acceptable trade because the time value of deferral is significant, especially if they plan to hold long-term or deploy the saved capital into additional properties. Others structure around recapture through 1031 exchanges or by holding properties until death and receiving a stepped-up basis for heirs under IRC Section 1014.
The key is not to let recapture concerns deter you from capturing a legitimate and substantial current-year benefit. The math almost always favors taking the deduction now and planning for recapture later rather than forgoing the deduction entirely.
Properties Already Owned Before January 2025
If you purchased rental property before January 19, 2025 and have not yet conducted a cost segregation study, you still have options. A look-back cost segregation study allows you to capture the benefit of reclassifying components in the year you conduct the study, even for properties purchased years earlier. The mechanism for doing this is a Form 3115 (Application for Change in Accounting Method), which allows you to catch up on all the missed depreciation in a single tax year as a Section 481(a) adjustment.
For properties acquired before the January 2025 cutoff, the component-level bonus depreciation rates will reflect the TCJA phase-down schedule based on when each component was originally placed in service. But even without 100% bonus depreciation, a look-back study can generate significant catch-up deductions through accelerated MACRS depreciation, and the Form 3115 process often produces a large deduction in the current year through the 481(a) adjustment.
Why Timing Your Study Still Matters
With 100% bonus depreciation now permanent, you might think there is no longer any urgency to conduct a cost segregation study quickly after acquiring a property. That would be a mistake. While the bonus depreciation rate itself is no longer in danger of phasing down, there is still a compelling reason to act promptly: the earlier you conduct the study, the earlier you capture the deduction and begin deploying the saved capital into new investments.
A cost segregation study conducted in year one of ownership generates deductions on your first tax return. A study conducted in year five means you missed four years of potential cash flow improvement. Yes, a look-back study and Form 3115 can catch up the missed depreciation, but you lose the compounding benefit of having that capital available earlier.
Additionally, if you are undertaking renovations or improvements to the property, getting a study done before or during construction allows for proper component-level documentation that supports the component election under Notice 2026-11. Trying to reconstruct that documentation retroactively is harder and may produce less defensible results in an audit.
What to Do Next
IRS Notice 2026-11 is interim guidance, meaning formal regulations are still forthcoming. The IRS has indicated it will issue more detailed guidance in the future, and some aspects of the rules may be refined. However, the notice explicitly states that taxpayers may rely on it for tax years ending after January 19, 2025, so there is no reason to wait for final regulations before acting.
If you purchased rental property after January 19, 2025 and have not yet conducted a cost segregation study, this is the right time to commission one. The combination of permanent 100% bonus depreciation and a properly executed cost segregation study is among the most powerful tax planning tools available to individual real estate investors today. If you own property acquired before that date, a look-back study and Form 3115 analysis with your CPA can determine whether significant catch-up deductions are available.
The IRS has clarified the rules. The opportunity is real. The next step is simply to run the numbers on your property.