Published August 28, 2026 · Last updated: August 2026 · Tax Preparation & Planning
Section 163(j) and the Real Property Election: Why the 2026 Rules Changed the Math for Developers
For leveraged real estate, the Section 163(j) business interest limitation has long forced an uncomfortable choice: accept a cap on your interest deduction, or make the real property trade or business election to escape the cap, but give up bonus depreciation and accept slower depreciation on your buildings. In 2026 that choice looks very different, because the One Big Beautiful Bill Act permanently restored the EBITDA-based calculation of adjusted taxable income (IRC §163(j)), which for many owners means they can now deduct their interest without electing out, and keep bonus depreciation too.
This is one of the most consequential and least understood 2026 changes for developers and investors, and it even comes with a rare chance to undo a prior election. This guide explains how the limitation works, exactly what changed, when the real property election still makes sense, the ADS tradeoff, and how it interacts with a cost segregation study. If you looked at this a year or two ago and elected out, the conclusion may have reversed.
- Section 163(j) caps business interest deductions at business interest income plus 30% of adjusted taxable income (ATI), with the excess carried forward.
- OBBBA permanently restored the EBITDA-based ATI (adding depreciation and amortization back) for tax years beginning after December 31, 2024, which raises ATI and loosens the cap.
- Small businesses under the ~$32M gross-receipts threshold are generally exempt from the limitation entirely.
- The real property trade or business election escapes the cap, but forces ADS depreciation (40/30/20-year lives) and disqualifies bonus depreciation on real property, residential rental, and QIP. It is irrevocable.
- Many owners no longer need the election in 2026, they can deduct their interest and keep bonus depreciation, where before they had to choose.
- The IRS is allowing certain taxpayers who elected out in 2022, 2023, or 2024 to withdraw that election, a rare do-over.
How Does the 163(j) Interest Limitation Work?
Section 163(j) limits your annual business interest deduction to the sum of your business interest income, 30% of your adjusted taxable income (ATI), and any floor-plan financing interest. Interest above that limit is disallowed for the year, but it carries forward indefinitely, so it is a deferral, not a permanent loss. The mechanics run through Form 8990.
Real estate feels this more than most industries for a structural reason: projects tend to be highly leveraged, and they often produce little income in the early years while carrying heavy interest. That means the 30% cap is calculated off a low ATI in exactly the years interest is highest, so a leveraged developer can lose current deductions right when cash is tightest. There is an important exemption, though: businesses that meet the gross-receipts test (average annual gross receipts at or below roughly $32 million for 2026, indexed) are generally not subject to the limitation at all, though related-entity aggregation rules can pull a seemingly small business over the line.
What Did OBBBA Change for 2026?
The pivotal change is in how ATI is computed, and it swings the whole analysis. From 2018 through 2021, ATI was an EBITDA figure: you added depreciation, amortization, and depletion back to income before applying the 30% cap. Starting in 2022, those add-backs disappeared and ATI became an EBIT figure, which shrank ATI, and therefore the deductible interest, for any capital-intensive business. For real estate with heavy depreciation, that quietly tightened the cap.
OBBBA reversed it, and permanently. For tax years beginning after December 31, 2024, the depreciation, amortization, and depletion add-back is restored, returning ATI to the more generous EBITDA basis (confirmed in IRS guidance including OBBBA implementation guidance). The practical effect: your ATI is larger, your 30% cap is higher, and far more of your interest is deductible without any special election. Paired with permanent 100% bonus depreciation, this fundamentally changed the cost-benefit of the real property election that so many owners made under the old rules.
What Is the Real Property Trade or Business Election?
A qualifying real property trade or business, development, construction, acquisition, rental, operation, management, leasing, or brokerage of real property, can make an election under Section 163(j)(7) to opt out of the interest limitation entirely. Elect, and all of your business interest becomes deductible, no 30% cap. For a highly leveraged real estate business, that sounds like an easy win, and under the pre-2025 rules, it often was the right call.
Two features make it a serious decision rather than a formality. First, it is irrevocable, once made, you generally live with it. Second, it comes with a significant tradeoff in the form of mandatory ADS depreciation, covered next. So the election is not free: it trades away depreciation speed for interest deductibility, permanently. Whether that trade is worth it is precisely the calculation OBBBA changed.
What Is the ADS Tradeoff?
When you make the real property election, you must depreciate certain assets under the Alternative Depreciation System (ADS) instead of the standard system. ADS uses longer recovery periods and, critically, ADS property cannot take bonus depreciation. The affected assets and their ADS lives:
| Property Type | Standard Life | ADS Life (after election) |
|---|---|---|
| Nonresidential real property | 39 years | 40 years |
| Residential rental property | 27.5 years | 30 years |
| Qualified improvement property (QIP) | 15 years (bonus-eligible) | 20 years (no bonus) |
The QIP line is where the tradeoff hurts most: outside the election, QIP is 15-year property eligible for 100% bonus, so a big interior-renovation spend could be written off immediately; inside the election, it stretches to 20-year ADS with no bonus. For a business planning significant improvements, that swing can outweigh the interest benefit. This is the crux of the old dilemma, and the reason the 2026 ATI change matters so much: if you can now deduct your interest without electing out, you keep both the interest deduction and the bonus depreciation.
The 2026 rules may mean you no longer need the election you made years ago, and can reclaim bonus depreciation you gave up. We model the interest limitation and the election together, including whether unwinding a prior election now pays.
Re-run your interest strategy with a partner →Do You Still Need to Elect Out in 2026?
For many owners, the answer is now no, and that is the practical headline of this whole change. With the EBITDA-based ATI restored, a great number of real estate businesses have enough ATI capacity to deduct all or most of their interest without the election, which means they can keep bonus depreciation and the faster recovery periods they would have surrendered by electing out.
The election still earns its keep for businesses whose interest expense is structurally much larger than their depreciation, deeply leveraged operations where even the restored ATI is not enough to absorb the interest. The point is that this is now a genuine, fact-specific calculation again, not a near-automatic yes. And if you elected out in 2022, 2023, or 2024, when the tighter EBIT rules made the election look necessary, the IRS is allowing certain taxpayers to withdraw that election and be treated as if it were never made, a rare and potentially valuable do-over for anyone who traded away bonus depreciation under the old regime.
How Does This Interact With Cost Segregation?
This is where the pieces come together, and where careful planning separates a good outcome from a great one. If you do elect out of 163(j), the ADS requirement applies to your real property, residential rental, and QIP, so those lose bonus depreciation. But the 5 and 7-year personal property that a cost segregation study identifies is generally not subject to the ADS requirement, so it can often still take 100% bonus even after the election.
So the election does not necessarily destroy your cost-seg benefit, it targets the building shell and QIP, while the short-life personal property can still be accelerated. That nuance matters most for a developer who genuinely needs the election. But for the many owners who, under the 2026 rules, no longer need to elect out at all, the cleaner path is to skip the election, take bonus on everything eligible, and keep the full depreciation benefit alongside a now-adequate interest deduction. The interaction is exactly the kind of multi-variable modeling, interest capacity, ADS lives, bonus eligibility, exit timing, that should be run before you file.
Frequently Asked Questions
Stephen Calvo, CPA
It caps how much business interest you can deduct in a year. In general, your deduction is limited to your business interest income plus 30% of your adjusted taxable income (ATI), plus floor-plan financing. Any interest over that cap is not lost, it carries forward, but it is deferred, which hurts cash flow. For real estate, which tends to be highly leveraged and slow to produce income early on, the cap can bite hardest in exactly the years when interest is highest and income is lowest. That is why the rules around it, and the election to escape it, matter so much to developers and investors.
Nick Termine, CPA
The single most important change is how ATI is calculated. From 2022 through 2024, depreciation and amortization were not added back, which shrank ATI and tightened the 30% cap for anyone with heavy depreciation. OBBBA permanently restored the EBITDA-based ATI (adding depreciation, amortization, and depletion back) for tax years beginning after December 31, 2024. That raises your ATI and, for many real estate businesses, means far more of your interest is deductible without doing anything special. Combined with permanent 100% bonus depreciation, it has genuinely changed the strategic math around the real property election.
Stephen Calvo, CPA
It is an election a qualifying real property business can make to opt out of the Section 163(j) limitation entirely, so all your business interest becomes deductible. The catch is the tradeoff: once you elect out, you must depreciate your nonresidential real property, residential rental property, and qualified improvement property on the slower Alternative Depreciation System (ADS), and ADS property cannot take bonus depreciation. The election is also irrevocable. So it is a permanent trade of faster depreciation for unlimited interest deductions, a decision that deserves real modeling before you make it.
Nick Termine, CPA
Often, no, and that is the headline. Because OBBBA restored the depreciation add-back to ATI, many real estate businesses now have enough ATI capacity to deduct all or most of their interest without electing out, which lets them keep bonus depreciation and the faster recovery periods. The election still helps businesses whose interest is structurally far larger than their depreciation. But for a lot of owners, the 2026 rules mean they can have both full interest deductions and bonus depreciation, where before they had to choose. It is worth re-running the numbers even if you looked at this a year or two ago.
Stephen Calvo, CPA
Maybe not. Recognizing that the OBBBA changes flipped the math, the IRS issued relief allowing certain taxpayers who made the real property election for tax years beginning in 2022, 2023, or 2024 to withdraw it, and be treated as if they had never made it. That is a rare do-over on what is normally an irrevocable election, and for an owner who gave up bonus depreciation to escape a limitation that has since loosened, it can be very valuable. There are eligibility conditions and procedures to follow, so it is worth reviewing your prior returns to see whether unwinding the election now makes sense.
Nick Termine, CPA
Carefully, and this is where planning pays off. If you elect out of 163(j), the ADS requirement applies to your real property, residential rental, and qualified improvement property, so those lose bonus depreciation. But the 5 and 7-year personal property that a cost segregation study carves out is generally not subject to that ADS requirement, so it can often still take bonus even after the election. So the election does not necessarily kill your entire cost-seg benefit, it targets the real-property and QIP portion. Getting the interaction right, especially now that you may not need the election at all, is exactly the kind of modeling to do before you file, not after.
Work With TC Advisors
The 2026 changes to the interest limitation quietly reversed the right answer for a lot of leveraged real estate owners. We help New Jersey developers and investors model the 163(j) limitation and the real property election together, decide whether to elect out or unwind a prior election, and coordinate it with cost segregation and bonus depreciation. You work directly with a partner, no handoffs. Our Hackensack office serves owners across Bergen County and the New York metro through year-round tax planning.
Schedule a consultation →- Cornell Legal Information Institute — IRC §163(j), limitation on business interest
- Internal Revenue Service — About Form 8990, Limitation on Business Interest Expense
- Internal Revenue Service — Publication 946, How To Depreciate Property (ADS lives)
- Internal Revenue Service — One Big Beautiful Bill Act provisions
Related: Cost Segregation Studies for NJ Real Estate, The Passive Activity Loss Rules, and Buying Rental Property in an LLC.
