When the One Big Beautiful Bill Act (OBBBA) was signed into law on July 4, 2025, it permanently restored one of the most powerful tax breaks available to American businesses: 100% bonus depreciation. For small business owners planning equipment purchases, vehicle upgrades, or real estate investments in 2026, this is arguably the single most impactful provision in the new tax code—yet most owners don’t fully understand how to use it.
This guide breaks down exactly what bonus depreciation is in 2026, what qualifies, how it differs from Section 179, and how small business owners can use it strategically to lower their tax bill and free up cash flow.
Normally, when your business buys a long-term asset—say, a $40,000 piece of machinery—you can’t deduct the full cost in the year of purchase. Instead, you have to spread that deduction across the asset’s “useful life” (often 5, 7, or 15 years) through a process called depreciation.
Bonus depreciation, governed by Section 168(k) of the tax code, lets you skip that timeline entirely for qualifying property. Instead of recovering the cost over many years, you can deduct a large percentage—currently 100%—in the very first year the asset is placed in service.
The result: a much bigger first-year deduction, lower taxable income, and more cash staying in your business when you need it most.
Before the OBBBA was signed in July 2025, bonus depreciation was on a phase-down schedule originally set by the Tax Cuts and Jobs Act of 2017. Here’s what the timeline looked like and how it changed:
The key change: bonus depreciation is now permanent at 100% for qualifying property acquired and placed in service after January 19, 2025. There is no scheduled expiration, no phase-down, and no looming cliff. For the first time in years, business owners can plan multi-year capital investments without worrying about a shrinking deduction.
One catch worth flagging: the property must be both acquired and placed in service after January 19, 2025. If you signed a binding contract before that date, the older phase-down rules may still apply—so check your paperwork carefully.
The IRS defines qualifying property as any depreciable asset with a recovery period of 20 years or less. For most small businesses, that covers a wide range of common purchases:
Unlike older versions of the rule, bonus depreciation now applies to both new and used assets, as long as the property is new to your business (i.e., you didn’t previously use it) and acquired in an arm’s-length transaction.
What doesn’t qualify: the building structure itself. Residential rental property (depreciated over 27.5 years) and most commercial buildings (39 years) are excluded—only the shorter-life components inside or around them qualify.
Bonus depreciation isn’t the only way to accelerate deductions. Section 179 also lets businesses immediately expense qualifying property, and the two are often used together. But they work differently, and the distinction matters.
In practice, the IRS requires you to apply Section 179 first, with bonus depreciation picking up any remaining basis. For most small businesses, the strategic question isn’t which one to use—it’s how to combine them for the maximum benefit while staying within state-level rules (many states don’t conform to federal bonus depreciation, which can complicate planning).
For small business owners who also hold rental properties or commercial real estate, bonus depreciation is one of the most powerful tax tools available—but only if you know how to unlock it.
A typical residential rental building is depreciated over 27.5 years, and commercial property over 39. That means a $1 million purchase produces a relatively modest annual deduction of roughly $25,000–$36,000. Bonus depreciation doesn’t apply to the building itself.
But it does apply to the shorter-life components inside that building: appliances, carpeting, cabinetry, electrical systems dedicated to specific equipment, landscaping, parking lots, and similar items. Identifying these components requires a cost segregation study, in which engineers and tax specialists reclassify portions of the property into 5-, 7-, or 15-year categories. Once reclassified, those components are eligible for 100% bonus depreciation in year one.
For investors looking at the strategy in depth, this bonus depreciation guide for real estate investors walks through worked examples showing how a $1.2 million rental property can generate over $200,000 in first-year deductions when cost segregation is paired with bonus depreciation. The same playbook applied to larger commercial properties can produce six- and seven-figure paper losses.
One important caveat: these deductions are subject to the passive activity loss rules. If real estate isn’t your full-time profession, the losses generally can only offset other passive income unless you qualify for Real Estate Professional Status (REPS) or meet specific exceptions. This is a key reason high-income professionals often consult tax-focused real estate firms like Dayan Capital before structuring investments around these strategies.
Bonus depreciation is claimed on IRS Form 4562 (Depreciation and Amortization), which is filed with your business tax return. The form you attach it to depends on your business structure:
The mechanics aren’t complicated, but the documentation requirements are. You’ll need clear records of:
Sloppy documentation is one of the most common triggers for IRS scrutiny on depreciation claims, so it pays to work with a qualified accountant or tax professional who can ensure everything is properly substantiated and that your federal and state filings stay aligned.
For 2026, bonus depreciation is back at 100%, it’s permanent, and it covers a wider range of assets than most small business owners realize. Whether you’re upgrading equipment, replacing a fleet vehicle, renovating commercial space, or holding rental property, the ability to deduct the full cost of qualifying assets in year one can dramatically reduce your tax bill and improve cash flow.
But maximizing the benefit requires planning. The interaction between bonus depreciation, Section 179, passive loss rules, and state-level conformity can get complicated quickly—and decisions you make this year affect deductions for years to come. Whether you handle taxes in-house or work with small business accountants, make sure bonus depreciation is part of the conversation before your next major purchase. The deduction is sitting there for the taking—it’s up to you to claim it strategically.
Jacob Dayan is a true Chicagoan, born and raised in the Windy City. After starting his career as a financial analyst in New York City, Jacob returned to Chicago and co-founded FinancePal in 2015. He graduated Magna Cum Laude from Mitchell Hamline School of Law, and is a licensed attorney in Illinois.
Jacob has crafted articles covering a variety of tax and finance topics, including resolution strategy, financial planning, and more. He has been featured in an array of publications, including Accounting Web, Yahoo, and Business2Community.
Nick Charveron is a licensed tax practitioner, Co-Founder & Partner of Community Tax, LLC. His Enrolled Agent designation is the highest tax credential offered by the U.S Department of Treasury, providing unrestricted practice rights before the IRS.
Read More
Jason Gabbard is a lawyer and the founder of JUSTLAW.
Andrew is an experienced CPA and has extensive executive leadership experience.
Contact us today to learn more about your free trial!
By entering your phone number and clicking the "Get Custom Quote" button, you provide your electronic signature and consent for FinancePal to contact you with information and offers at the phone number provided using an automated system, pre-recorded messages, and/or text messages. Consent is not required as a condition of purchase. Message and data rates may apply.
By entering your phone number and clicking the “Get Started” button, you provide your electronic signature and consent for FinancePal to contact you with information and offers at the phone number provided using an automated system, pre-recorded messages, and/or text messages. Consent is not required as a condition of purchase. Message and data rates may apply.