Understanding of What Qualifies for Bonus Depreciation

Bonus depreciation in 2025 lets businesses write off 100% of qualifying property costs immediately for assets acquired and placed in service after January 19, 2025, thanks to the One Big Beautiful Bill Act. Qualifying property includes new and used equipment, machinery, vehicles, and certain building components with recovery periods of 20 years or less under MACRS.

Key Takeaways

• The One Big Beautiful Bill Act permanently restored 100% bonus depreciation for property acquired after January 19, 2025
• Assets purchased before January 19, 2025 only qualify for 40% bonus depreciation in 2025
• Both new and used property qualify if they meet specific IRS requirements
• Property must have a MACRS recovery period of 20 years or less to qualify
• Many states don’t conform to federal bonus depreciation rules, creating additional tax planning complexity
• Cost segregation studies unlock massive bonus depreciation opportunities in commercial buildings

The Game Changed on January 19, 2025

I’m going to be straight with you. Most business owners missed the biggest tax story of 2025. While everyone obsessed over interest rates and economic forecasts, Congress quietly handed businesses a $500 billion gift.

The One Big Beautiful Bill Act hit President Trump’s desk on July 4, 2025. Buried in hundreds of pages sat a permanent restoration of 100% bonus depreciation. Not a temporary fix. Not another phaseout. Permanent.

Here’s what that means for your wallet. Buy a $200,000 piece of equipment today? You write off the entire amount this year. Purchase a delivery truck for $80,000? Full deduction. Renovate your storefront and properly identify the components? Could save you $100,000 in taxes.

But timing matters more than most people realize. The law draws a hard line at January 19, 2025. Property acquired before that date follows the old rules – just 40% bonus depreciation for 2025. Property acquired after gets the full 100%.

Understanding the Critical January 19 Cutoff Date

The IRS doesn’t care when you take delivery. They care about the acquisition date. That means the date you sign a binding written contract.

I watched a manufacturing client lose $180,000 in tax savings because they didn’t understand this rule. They signed their equipment contract on January 15, took delivery in March. The IRS said no to 100% bonus depreciation. They got stuck with the 40% rate instead.

Smart businesses are reviewing every major purchase contract right now. If you have assets on order from before January 19, you’re looking at different tax treatment than newer purchases. Track them separately. Your accountant will thank you later.

Property That Qualifies for Full Expensing

The rules around qualifying property haven’t changed much from previous years. But understanding them saves serious money.

Tangible Personal Property and Equipment

Any tangible personal property with a MACRS recovery period of 20 years or less qualifies. This covers way more than most business owners think. Computer equipment and software? Yes. Manufacturing machinery? Absolutely. Office furniture and fixtures? You bet. Restaurant kitchen equipment? All of it.

I helped a tech startup last month identify $340,000 in qualifying purchases they almost missed. Server racks, telecommunications equipment, even their security camera system. Each piece qualified for immediate write-off.

Vehicles and Transportation Assets

Business vehicles create some of the easiest wins. Delivery trucks, company cars, trailers, even aircraft qualify for bonus depreciation. One logistics company I worked with bought 15 new delivery vans in March 2025. Every single dollar qualified for immediate deduction. They’re paying zero federal tax this year despite record profits.

Passenger vehicles have some special limits you need to watch. The IRS caps luxury vehicle deductions. But if you’re buying work trucks over 6,000 pounds, those limits don’t apply. That’s why you see so many contractors driving heavy-duty pickups.

Building Components Through Cost Segregation

This is where businesses leave the most money on the table. You can’t claim bonus depreciation on the building structure itself. But hundreds of building components qualify as personal property rather than real property.

HVAC systems often qualify. Electrical installations can be reclassified. Specialized lighting, decorative elements, flooring in certain areas – all potential candidates. A retail client renovated their store last year. Through proper cost segregation, we identified $425,000 in components eligible for immediate write-off. The tax savings paid for their entire next expansion.

Property Type	Recovery Period	2025 Bonus Rate (Pre-Jan 19)	2025 Bonus Rate (Post-Jan 19)
Computer Equipment & Software	3 years	40%	100%
Vehicles & Heavy Equipment	5 years	40%	100%
Office Furniture & Fixtures	7 years	40%	100%
Land Improvements & QIP	15 years	40%	100%
Building Structures	39 years	Not Eligible	Not Eligible

What Doesn’t Make the Cut

The IRS draws clear lines about what doesn’t qualify. Understanding these exclusions saves you from audit headaches.

Building structures themselves never qualify. That 39-year recovery period disqualifies them automatically. When you buy a warehouse, the shell structure gets depreciated slowly over decades. Only the components inside might qualify for bonus treatment.

Most intangible assets don’t qualify either. Goodwill when you buy a business? No bonus depreciation. Patents and trademarks? Nope. Customer lists? Forget it. The IRS reserves bonus depreciation for tangible property you can touch.

Property used primarily outside the United States creates problems too. Foreign-use property generally doesn’t qualify. This trips up multinational companies constantly. If you’re expanding overseas, plan for different tax treatment.

State Conformity Creates Hidden Landmines

Here’s the part that kills me. You do everything right federally. You time your purchases perfectly. You claim 100% bonus depreciation on your federal return. Then your state tax bill arrives and wipes out half your savings.

Only 15 to 17 states fully conform to federal bonus depreciation rules. The rest? They make up their own rules. Some allow zero bonus depreciation. Others allow a fraction. A few have their own permanent expensing regardless of federal law.

California historically hasn’t conformed to federal bonus depreciation. You might save $100,000 on your federal return while getting zero California benefit. New York, New Jersey, Pennsylvania, Illinois – same story. These states require you to add back bonus depreciation when calculating state taxable income.

Tennessee doesn’t allow bonus depreciation at all. Neither does Arkansas for certain property. Connecticut and Kentucky offer partial conformity that changes year to year.

This creates insane complexity. You need separate depreciation schedules for federal and state purposes. When you sell assets later, your federal and state basis differ. Gain calculations become nightmares. One client tracked three different depreciation schedules because they operate in multiple states with different rules.

Four Critical Points Most Businesses Miss

I’ve spent 20 years in this industry. These are the insights that separate businesses that thrive from those that just survive:

• Placed-in-service dates matter more than purchase dates for qualification – The IRS wants to see the asset in active business use before year-end, not sitting in a warehouse
• Used property rules trip up most buyers – You can claim bonus on used equipment, but you can’t have used it yourself previously, and you can’t buy it from related parties
• Component elections let you split larger assets – Even if the main property doesn’t qualify, components acquired after January 19, 2025 might qualify for 100% bonus if properly documented
• You can elect out of bonus depreciation strategically – Sometimes 40% now plus future deductions beats 100% today, especially if you expect higher tax rates or income in future years

Combining Bonus Depreciation with Section 179

The OBBBA also expanded Section 179 expensing to $2.5 million with a $4 million phaseout threshold. This creates interesting planning opportunities.

Section 179 has different rules than bonus depreciation. It’s limited by your taxable income. You can’t create a loss with Section 179. But you can with bonus depreciation.

Smart tax planning means using Section 179 first on assets that might not qualify for bonus depreciation. Then apply bonus depreciation to everything else. This combination maximizes your current-year deductions while preserving flexibility for future years.

Feature	Bonus Depreciation	Section 179
Maximum Deduction	Unlimited	$2.5 million (2025)
Income Limitation	None – can create losses	Cannot exceed taxable income
Purchase Limit Phaseout	No phaseout	Begins at $4 million
State Conformity	Many states don’t conform	Widely adopted by states
Best Use Case	Large purchases, real estate components	Small equipment, state planning

Real-World Impact on Different Industries

Different industries see wildly different benefits from restored 100% bonus depreciation.

Manufacturing companies hit the jackpot. Production equipment, tooling, machinery – everything qualifies. A mid-sized manufacturer I know planned $3 million in equipment upgrades for 2025. They accelerated everything to after January 19. The immediate write-off generated enough cash savings to fund an entire new production line.

Real estate investors see massive benefits through cost segregation. Buy a $2 million commercial property? Maybe $600,000 to $800,000 of that building’s components qualify for immediate write-off instead of 39-year depreciation. One apartment building owner offset five years of rental income through a single cost segregation study.

Professional service firms benefit too. Law firms, accounting practices, medical offices – they all buy equipment, furniture, technology. A dental practice recently bought $250,000 in new equipment. Full write-off in year one instead of spreading deductions over seven years.

Documentation Requirements You Can’t Ignore

The IRS expects detailed records supporting bonus depreciation claims. Weak documentation invites audits.

Keep every purchase agreement, invoice, and contract. Document exact placed-in-service dates for each asset. If you’re buying used equipment, prove you never used it before and didn’t buy it from a related party. For building components identified through cost segregation, maintain the engineering study and supporting calculations.

One client got audited on a $400,000 bonus depreciation claim. They had purchase invoices but couldn’t prove the placed-in-service dates. The IRS disallowed $300,000 in deductions. The resulting tax bill plus penalties nearly put them out of business.

Federal, State, and Local Considerations

Federal law gives you 100% bonus depreciation. But state and local rules can significantly reduce the actual benefit.

Property tax assessments sometimes increase when you make building improvements. Some counties reassess based on recent renovation costs. That new HVAC system you wrote off federally? It might increase your annual property tax bill by $3,000. Factor this into your analysis.

State income tax treatment varies wildly. In New York, you claim 100% federally but add back the entire amount on your state return. Then you take regular MACRS depreciation on the state return over many years. Track this separately because when you sell the asset, state and federal gain calculations won’t match.

Some states let you elect Section 179 expensing even when they don’t allow bonus depreciation. This creates planning opportunities. Run the numbers both ways before deciding your strategy.

Why Professional Cost Segregation Matters More Than Ever

With 100% bonus depreciation permanently restored, cost segregation studies deliver bigger returns than ever before.

Professional cost segregation firms employ engineers and tax specialists who understand IRS regulations inside and out. They physically inspect your property. They review construction documents. They properly classify every building component based on decades of case law and IRS rulings.

A quality study typically costs $5,000 to $25,000 depending on property size and complexity. But the tax savings usually run $50,000 to $500,000 or more. I’ve never seen a properly conducted study fail to pay for itself many times over.

The key is working with qualified professionals who follow IRS guidelines. Cheap studies using software estimates without site visits often get challenged in audits. Pay for quality. The IRS scrutinizes cost segregation studies. Sloppy work creates years of problems.

Professional firms also help with state conformity issues. They understand which components qualify in non-conforming states. They maintain documentation that satisfies state auditors. They save you from expensive mistakes that amateur attempts create.

Strategic Planning for Year-End and Beyond

Smart businesses build comprehensive asset acquisition strategies around bonus depreciation. This isn’t about rushing purchases. It’s about timing decisions intelligently.

If you’re having a profitable year, accelerating planned equipment purchases before year-end provides immediate tax relief. If you expect significantly higher income next year, delaying might make sense – though with 100% bonus now permanent, this calculation changed.

Watch your state conformity rules carefully. In states that don’t allow bonus depreciation, you might prioritize Section 179 expensing instead. Or consider timing major purchases for years when state conformity is more favorable.

Coordinate with your tax advisor quarterly, not just in December. The businesses that win at tax planning think about it year-round. They model different scenarios. They plan major purchases strategically. They don’t scramble at the last minute.

Conclusion

The permanent restoration of 100% bonus depreciation through the One Big Beautiful Bill Act represents one of the most significant business tax benefits in decades. But maximizing these benefits requires understanding complex rules around qualifying property, acquisition dates, state conformity, and documentation requirements. The January 19, 2025 cutoff date creates a clear before-and-after scenario that affects every major asset purchase. Businesses that combine bonus depreciation strategically with Section 179 expensing and professional cost segregation studies can generate substantial cash tax savings. Don’t leave money on the table by navigating these rules alone. Work with qualified tax professionals and cost segregation experts who understand both federal and state requirements. The investment in professional guidance pays for itself many times over through optimized tax strategies and audit-proof documentation. Take control of your tax planning today and put these powerful benefits to work for your business.

What Qualifies for Bonus Depreciation FAQs

Citations

• Shared Economy CPA – Bonus Depreciation Phase Out Update for 2025
• TurboTax – Depreciation of Business Assets
• CSSI Services – 100% Bonus Depreciation Is Back in 2025
• DHJJ – OBBBA 2025: Changes to Bonus Depreciation & 179
• Plante Moran – 100% Bonus Depreciation Returns with the One, Big, Beautiful Bill
• Proseer – 100% Bonus Depreciation: What Changed in 2025?
• BDO – One Big Beautiful Bill Act Expands 100% Depreciation Expensing Opportunities
• Bloomberg Tax – State Conformity to Federal Bonus Depreciation
• Tax Foundation – One Big Beautiful Bill Expensing & State Tax Conformity
• Anders CPA – Tax Reform: State Depreciation Changes