A defensive tax move many companies made to escape the old interest limits is irrevocable, and it quietly disqualifies new production buildings from full expensing.

Nobody made this election wrong. The rules changed around it.

Between 2018 and 2024, Section 163(j) limited business interest deductions, and from 2022 onward the limit tightened sharply because it was measured against a tax EBIT figure rather than EBITDA. Capital-intensive companies with real estate looked for relief, and the code offered one: a business could elect to be treated as an electing real property trade or business and escape the interest limitation entirely.

The election came with a price that seemed modest at the time. The electing business had to depreciate its nonresidential real property, residential rental property, and qualified improvement property under the slower alternative depreciation system. It could not claim bonus depreciation on qualified improvement property. And the election was irrevocable.

Many manufacturers and sponsor-backed platforms made it, typically in the entity that owns the plant and leases it to the operating company. Renting real property counts as a real property trade or business, so the property company qualified, and the trade looked sensible: give up some depreciation speed, keep the interest deductions.

Why It Matters Now

The One Big Beautiful Bill Act created a new 100% deduction for qualified production property: the production portion of a factory placed in service after the enactment date, with construction beginning before 2029. It is the most valuable incentive in the law for manufacturers. A building that would have taken 39 years to recover can be deducted in year one.

Property that must be depreciated under the alternative depreciation system is not eligible.

IRS guidance issued in February 2026 also allows related property companies to claim the deduction based on the production activity of a commonly controlled operating company, which would otherwise make the typical property company structure ideal for capturing it. But if that property company made the real property trade or business election, its buildings are on alternative depreciation, and the deduction is unavailable. A new $40 million production facility that could have generated a year-one federal deduction worth several million dollars would instead be depreciated over 40 years.

Meanwhile, the original rationale for the election has largely evaporated. With EBITDA restored as the base for the interest limitation, many businesses that elected out would no longer face a meaningful limit at all. They are paying for insurance against a risk that mostly went away, and the premium just went up.

A Worked Example

Consider a sponsor-backed precision components platform. In 2021, its property company, which owns the main plant and leases it to the operating company, made the real property trade or business election. At the time, the platform was carrying heavy acquisition debt and the interest limitation was about to tighten. The election protected several million dollars of annual interest deductions.

In 2026, the platform breaks ground on a $40 million expansion, roughly $26 million of it production floor and raw material storage. Owned by a commonly controlled entity without the election, that $26 million could support a year-one federal deduction worth about $5.5 million. Owned by the existing property company, it is depreciated over 40 years, producing roughly $650,000 of deductions a year. Same building, same owners, same production. The only difference is a statement attached to a tax return five years ago.

The election also continues to affect qualified improvement property, the interior improvements to nonresidential buildings that would otherwise qualify for bonus depreciation. Every renovation the property company funds is recovered over 20 years rather than expensed.

What to Do This Quarter

First, find out whether the election exists. It is made by attaching a statement to a filed return, often years ago, sometimes by an advisor who is no longer involved. Check every entity that owns production real estate, including property companies held by sponsors or family owners.

Second, if you are planning a new plant or a significant expansion before 2029, evaluate with your tax advisor whether the new facility can be owned by an entity or trade or business that is not bound by the election. This requires care, because the rules look through some related-party arrangements, but the value at stake justifies the analysis.

Third, if you are a sponsor, add this to acquisition diligence. An irrevocable election in a target’s property company is a constraint on every facility investment in your value creation plan.

Fourth, recognize that the election may still be doing useful work. A property company with substantial debt and modest depreciation may genuinely benefit from staying outside the interest limitation. The point is not that every election was a mistake. It is that no one should be making 2026 facility decisions without knowing it exists.

Agricultural producers should run the same check on the parallel farming business election, which carries similar alternative depreciation consequences.

The election made sense when it was made. Five minutes of diligence now will tell you whether it is about to cost you the largest deduction your company will ever be offered.