For most of the last decade, bonus depreciation was a countdown. You bought the equipment, the vehicles, the tenant improvements, and you did it before December 31 because the write-off was shrinking every year. One hundred percent in 2022. Eighty in 2023. Sixty in 2024. The whole conversation was a race against a phase-out, and the advice that came with it was always the same: buy now, before the deduction gets smaller.
That clock is gone. The 2025 tax law made 100 percent bonus depreciation permanent again, and almost no one has updated the way they think about it.
This matters more than it sounds. When a deduction is disappearing, the smart move is to accelerate purchases to beat the deadline. When the same deduction is permanent, that logic inverts. There is no deadline to beat. Which means the founders still buying assets in a hurry every fourth quarter are optimizing for a rule that no longer applies, and the ones treating it as a standing input to a multi-year plan are quietly building a structural advantage.
What actually changed
The One Big Beautiful Bill Act, signed in July 2025, permanently restored 100 percent first-year bonus depreciation under Section 168(k) for qualifying property acquired and placed in service after January 19, 2025. No phase-down. No sunset written into the next election cycle. It is now a standing feature of the code.
The same law expanded Section 179 expensing, lifting the maximum deduction to $2.5 million with the phase-out beginning at $4 million for 2025, and indexing upward from there. It also created something genuinely new: Section 168(n), full expensing for qualified production property, which lets certain domestic manufacturing and production facilities write off the building itself rather than depreciating it over 39 years, provided construction starts before 2029 and the property is placed in service before 2031.
Those are real numbers with real mechanics. But the headline for most operators is simpler. The write-off you spent years racing to capture before it shrank is not going to shrink anymore.
When a tax benefit is expiring, speed is the strategy. When it is permanent, sequence is the strategy. Most founders never make that switch, because no one told them the game changed.
Why permanence rewards a different behavior
Here is the trap. A deduction that felt urgent for a decade trained a generation of operators to treat asset purchases as a year-end tax event. Someone calls the accountant in early December, hears there is a big tax bill coming, and buys a truck or a piece of equipment to soak up the deduction before the year closes. The purchase reduces the tax bill. Everyone feels smart.
But a deduction taken today is a deduction you cannot take tomorrow. Bonus depreciation does not create value out of nothing. It moves the timing of a write-off forward, pulling deductions into the present that you would otherwise spread across future years. That is powerful when you are in a high-income year and you know it. It is expensive when you burn the deduction in a flat year and then walk into a much higher-income year with nothing left to offset it.
When the deduction was phasing out, you did not have the luxury of waiting for the right year. Use it or lose part of it. Now you do have that luxury, and the operators who understand that are asking a better question. Not "what can I buy before December 31," but "which of my next few years is going to carry the heaviest income, and how do I position my deductions to land there."
The move is coordination, not acceleration
This is where bonus depreciation stops being a tax line item and becomes an architecture question. The write-off only pays off if it is coordinated with three other things.
Your income timing. A permanent deduction lets you plan across years instead of within one. If you have a liquidity event, a large contract, or an exit coming in eighteen months, the deductions you preserve now are worth more deployed against that income than spent against this year's ordinary earnings. Permanence turns bonus depreciation into a lever you aim, rather than a window you rush.
Your entity structure. How much of an accelerated deduction you actually keep depends on the entity that holds the asset and how income flows through it. A large first-year write-off inside the wrong structure can strand losses, trigger basis limitations, or fail to reach the return where it would do the most good. The deduction is only as good as the structure it runs through.
Your exit and capital plan. Accelerated depreciation lowers the tax basis of an asset, which can increase the gain, and sometimes the depreciation recapture taxed at higher rates, when you eventually sell. For a founder who plans to hold, that is fine. For one heading toward a sale or a refinance, the write-off taken today can quietly raise the tax bill at exit. That is not a reason to skip it. It is a reason to decide it on purpose.
Where the real estate operators should look
For property investors and syndicators, permanence changes the math on cost segregation studies specifically. A building itself does not qualify for bonus depreciation. But a cost segregation study breaks the property into its components, and the shorter-lived pieces, the fixtures, the site improvements, the specialized systems, do qualify. With 100 percent bonus now permanent, those reclassified components can be written off in year one instead of over decades.
The old urgency was to get the study done before the bonus percentage dropped. That pressure is gone. The new discipline is to run the study when the resulting deduction lands in a year you actually want it, and to coordinate it with the hold period, the debt, and the eventual disposition. A cost segregation study is not a standalone win. It is one move on a board that includes entity, capital, and exit, and it only compounds when those pieces are decided together.
A test you can run this week
Pull your last three years of returns and ask a single question: Did my largest depreciation deductions land in my highest-income years, or did they land wherever the calendar happened to put a purchase?
If the honest answer is that your write-offs followed your buying habits rather than your income, you have been letting the tax tail wag the strategy. That was defensible when the deduction was disappearing and you had to grab it while you could. It is not defensible anymore. The rule is permanent now, and permanence rewards planning over reflex.
The founders who will benefit most from the next several years are not the ones who buy the most equipment. They are the ones who stopped treating a permanent deduction like an expiring one, and started aiming it at the income that is actually coming.
Tax law is specific and situations differ. This is a strategic view, not tax advice, and the mechanics above should be confirmed against your own facts with a qualified professional. If you want a second set of eyes on how your tax, entity, and capital decisions fit together, the starting point is a 30-minute private call at calendly.com/chelsea-eba/30min.
About the author
Chelsea Michelle is the founder of Elevated Business Advisors, a private advisory practice for founders, investors, and family offices. She architects tax, capital, partnerships, and AI and systems as one integrated system for a deliberately small roster of clients, by application, across Florida and nationally. She also hosts The Power of the Pivot podcast.