Rev. Proc. 2026-17: How to Undo the Section 163(j) Election and Reclaim Bonus Depreciation Before October 15

The IRS Just Reopened a Door That Was Supposed to Be Permanently Shut

If you own leveraged rental property inside a partnership, LLC, or S corporation, there is a reasonable chance your CPA made an election on your 2022, 2023, or 2024 return that is now quietly costing you a large depreciation deduction. It is called the electing real property trade or business election, made under IRC Section 163(j)(7)(B). At the time it was made, it was almost certainly the right call. Under the tax law as it stood in those years, it was also irrevocable. Forever.

On March 18, 2026, the IRS released Revenue Procedure 2026-17 and changed that. Taxpayers who made the election on a timely filed original return for a tax year beginning in 2022, 2023, or 2024 may now withdraw it, and be treated for all tax purposes as if the election had never been made. Undoing it pulls your rental property back out of the alternative depreciation system, restores standard MACRS recovery periods, and, critically, makes your property eligible for bonus depreciation it was previously locked out of.

The catch is the clock. Amended returns must be filed by the earlier of October 15, 2026, or the expiration of the statute of limitations for the election year. For a number of taxpayers, that second date arrives first. If you are reading this in August 2026, you have weeks, not months.

What the Section 163(j) Election Actually Did to Your Depreciation

Section 163(j) limits how much business interest expense a taxpayer can deduct in a given year. The cap is generally 30% of adjusted taxable income, or ATI. The definition of ATI is where real estate investors got hurt.

Through 2021, ATI was computed on an EBITDA basis, meaning you added depreciation, amortization, and depletion back before applying the 30% cap. Beginning with tax years starting in 2022, the addback disappeared and ATI dropped to an EBIT basis. Depreciation now reduced the very number the interest cap was measured against. For a leveraged rental portfolio with heavy depreciation and heavy mortgage interest, that was a brutal combination. Investors who had never worried about Section 163(j) suddenly found meaningful portions of their mortgage interest disallowed.

Congress built an escape hatch. A real property trade or business, which under IRC Section 469(c)(7)(C) includes development, redevelopment, construction, acquisition, rental, operation, management, leasing, and brokerage of real property, can elect out of Section 163(j) entirely. Interest becomes fully deductible again. The price is spelled out in IRC Section 168(g)(8): the electing business must use the alternative depreciation system for its nonresidential real property, residential rental property, and qualified improvement property.

ADS is meaningfully slower. Residential rental property moves from 27.5 years to 30 years. Nonresidential real property moves from 39 years to 40 years. Qualified improvement property moves from 15 years to 20 years, and because 20-year ADS property held by an electing business does not qualify as eligible property under IRC Section 168(k)(2), it also loses access to bonus depreciation. For an owner doing regular interior renovations, that last consequence is usually the expensive one.

Why the Math Flipped in 2025

Two provisions of the One Big Beautiful Bill Act reversed the calculus that made the election attractive in the first place.

First, OBBBA restored the depreciation, amortization, and depletion addback to the ATI computation for tax years beginning after December 31, 2024. ATI returns to an EBITDA basis. That single change raises the 30% interest cap substantially for exactly the taxpayers who were most squeezed by it, because depreciation is no longer subtracted before the cap is calculated. A property throwing off $400,000 of depreciation now adds $400,000 back into ATI, which raises the deductible interest ceiling by roughly $120,000 in that year alone.

Second, OBBBA made 100% bonus depreciation permanent under IRC Section 168(k) for qualifying property acquired and placed in service after January 19, 2025. There is no phase-down schedule waiting at the end of it.

Put those together and the trade that made sense in 2022 often does not make sense in 2026. You gave up accelerated depreciation to protect an interest deduction that, under the current rules, you may no longer need protection for. The IRS granted this relief specifically because the real estate industry was structurally locked out of the OBBBA benefits by an election that could not be undone.

What Withdrawing the Election Does for a Cost Segregation Study

This is where the opportunity becomes concrete for rental property owners, because the interaction with cost segregation is direct.

An electing real property trade or business is not barred from doing a cost segregation study. Five-year and seven-year tangible personal property identified in a study remains five-year and seven-year property under ADS in most cases, and fifteen-year land improvements are still separately classified. But the ADS requirement reaches qualified improvement property, and the disqualification from bonus depreciation is the piece that hollows out the result.

Consider an owner who bought a 24-unit apartment building for $4.2 million in 2023, allocated $3.6 million to the depreciable building, and elected out of Section 163(j) to protect roughly $190,000 of annual mortgage interest. A cost segregation study on that building would typically identify somewhere between 20% and 30% of the depreciable basis as short-life property. Assume the study finds $900,000: $520,000 of five-year personal property, $110,000 of seven-year property, and $270,000 of fifteen-year land improvements.

Inside the election, bonus depreciation on that $900,000 is unavailable and the structural component is depreciating over 30 years instead of 27.5. Outside the election, with the property placed in service after January 19, 2025, that same $900,000 is 100% deductible in year one. At a combined 40% marginal rate, that is $360,000 of tax reduction that the election was suppressing. Even where the property predates the OBBBA effective date and only the applicable phase-down rate applies, the difference between an ADS schedule and an accelerated MACRS schedule on nine hundred thousand dollars of short-life assets is worth well into six figures in present value.

The point is not that everyone should withdraw. The point is that nobody who made this election should be assuming the original analysis still holds, because the two variables that drove it both changed.

Who Is Eligible and Who Is Not

Rev. Proc. 2026-17 is narrower than the headlines suggest. The relief applies to taxpayers who made an excepted trade or business election on a timely filed original federal income tax return for a taxable year beginning in 2022, 2023, or 2024. That covers electing real property trades or businesses, electing farming businesses, and excepted regulated utility trades or businesses.

If you made the election in 2019, 2020, or 2021, you are outside the window. Those elections remain permanent and irrevocable. This is a deliberate line: 2022 is the first year the EBIT-based ATI rule took effect, and the IRS is only reopening elections that were plausibly driven by that rule change.

If the election was made on a late-filed or amended return rather than a timely filed original return, it does not qualify for withdrawal under this revenue procedure.

One more eligibility nuance that matters for syndications and joint ventures: partnerships subject to the centralized partnership audit regime would normally have to route this through an administrative adjustment request. Rev. Proc. 2026-17 provides an alternative, allowing eligible BBA partnerships to file an amended Form 1065 and issue amended Schedules K-1 directly. That is a significant simplification, but it also means every partner receiving an amended K-1 will need to amend their own individual returns for the affected years.

The Mechanics of Filing a Withdrawal

The procedural requirements are specific and worth getting right the first time, because there is no second window.

You file an amended federal income tax return, amended Form 1065, or an administrative adjustment request for the year the original election was made. The filing must be clearly marked "FILED PURSUANT TO REV. PROC. 2026-17" and must include a statement confirming the withdrawal of the election.

The amended return has to reflect every downstream consequence, not just the election itself. That means recomputed depreciation on all affected property, corrected basis, the Section 163(j) limitation calculation that now applies, any resulting business interest expense carryforward under IRC Section 163(j)(2), and any collateral adjustments required under IRC Section 481(a). Amended returns are also required for every affected subsequent year, so a 2022 withdrawal generally means amending 2022, 2023, 2024, and potentially 2025.

The revenue procedure also permits a late election under IRC Section 168(k)(7) to opt out of bonus depreciation on a class-by-class basis. This exists because withdrawing the election can suddenly make property bonus-eligible in a year where a very large deduction is not actually useful, for example a year the taxpayer already had no taxable income. Being able to decline bonus on specific asset classes while accepting it on others is a real planning lever and should be modeled rather than defaulted.

If any of the affected years are under IRS examination, a copy of the amended filing must go to the coordinating revenue agent no later than the date it is submitted to the IRS.

The Deadline Is Probably Earlier Than You Think

October 15, 2026 is the outside date, not the operative one for many taxpayers. The actual deadline is the earlier of October 15, 2026, or the expiration of the applicable statute of limitations on assessment or refund for that tax year.

Work an example. A calendar-year C corporation filed its 2022 return on March 15, 2023. The three-year refund statute under IRC Section 6511 generally ran out on April 15, 2026. That taxpayer's window for the 2022 election year has already closed even though the revenue procedure nominally runs to October. A partnership that filed its 2022 Form 1065 on September 15, 2023 under extension has a later statute date, and its window is still open, but not by much.

The practical instruction is to identify the filing date of each affected return immediately and compute the specific statute date for each election year separately. Do not assume a single deadline covers a multi-entity portfolio. In a structure with several property-level LLCs that each made the election in different years, the deadlines can differ by entity.

When Staying Inside the Election Is Still the Right Answer

Withdrawal is not automatically favorable, and the revenue procedure specifically does not tell you which way to go. Several situations argue for leaving the election in place.

If the entity is very highly leveraged relative to its cash flow, the restored EBITDA-based ATI may still not be enough to fully absorb the interest expense. A property carrying $600,000 of annual interest against $900,000 of ATI would face a $270,000 cap and a $330,000 disallowance. The disallowed interest carries forward indefinitely under IRC Section 163(j)(2), so it is not lost, but it is deferred, and deferral has a cost.

If the property was placed in service before January 20, 2025, withdrawing does not deliver 100% bonus depreciation. It delivers the phase-down rate that applied in the placed-in-service year, which was 80% for 2023 and 60% for 2024. That is still substantial, but it changes the size of the prize.

For a BBA partnership with many partners, the administrative burden is real. Every partner receives an amended Schedule K-1 for multiple years and must amend individually. In a syndication with eighty limited partners, the coordination cost and the partner relations cost of that exercise are not trivial, and the benefit needs to clearly exceed it.

And there are taxpayers who simply had no taxable income in the affected years. A larger depreciation deduction in a year with nothing to offset produces a net operating loss or a suspended passive loss rather than a refund. That still has value, but it is future value, not cash now.

How to Decide, Step by Step

The analysis is not complicated in concept, but it needs actual numbers rather than intuition. A defensible process looks like this.

Start by confirming whether an election exists at all. Pull the 2022, 2023, and 2024 returns for every entity holding real property and look for the election statement attached under Section 163(j)(7). Many owners do not know one was made, because it was a technical decision handled at the preparer level.

Second, compute the statute of limitations date for each election year and each entity. That determines whether you have a decision to make or whether the question is already moot.

Third, model both paths across all affected years, not just the election year. Path one keeps the election, with ADS depreciation and unlimited interest. Path two withdraws it, with MACRS depreciation, available bonus depreciation, and a Section 163(j) limitation computed under the restored EBITDA-based ATI. Compare cumulative cash tax across the full period, and discount it, because a deduction in 2022 that generates a refund now is worth more than the same deduction spread across 2027 through 2050.

Fourth, and this is the step most often skipped, get a cost segregation study into the model before you decide. The magnitude of the benefit from withdrawing depends almost entirely on how much of your basis is short-life property, and you cannot know that without an engineering-based allocation. Deciding whether to withdraw without knowing whether your building holds $300,000 or $900,000 of five, seven, and fifteen-year assets is deciding with the main variable missing.

The Bottom Line

Rev. Proc. 2026-17 is a rare thing in tax administration: a genuine do-over on a permanent election, granted because the underlying law moved out from under taxpayers who had made a reasonable choice under the old rules. It is aimed squarely at real estate, and it is available for a short time.

If you or your entities made the electing real property trade or business election for a tax year beginning in 2022, 2023, or 2024, the question in front of you is whether accelerated depreciation is now worth more than the interest protection you traded it for. Under 100% permanent bonus depreciation and an EBITDA-based interest cap, it very often is.

Answering that question well requires knowing exactly how much of your property's basis qualifies for five, seven, and fifteen-year treatment. That is what a cost segregation study produces. Stratum delivers engineering-based, IRS audit-ready studies in 14 business days, with the component-level detail your CPA needs to model the withdrawal decision and to support the amended returns if you make it. With the outer deadline landing on October 15, 2026, and earlier for many taxpayers, there is no version of this where waiting improves the outcome.

Coordinating the Decision With Your Tax Advisor

This is a modeling decision more than a filing decision, and it needs a tax advisor who will run both paths rather than default to one. AE Tax Advisors walks through the broader planning framework in their depreciation tax strategy overview.