If you have been putting off a truck, a piece of equipment, or a major technology upgrade, the tax math just changed in your favor.
Under the One Big Beautiful Bill Act, 100% bonus depreciation is back. That means qualifying business property placed in service can be written off in full in the year you start using it, rather than deducted a little at a time over five, seven, or fifteen years.
For a contractor buying a $70,000 work truck or a professional services firm outfitting a new office, that is a meaningful difference in this year’s tax bill.
Here is what qualifies, what does not, and why the timing of your purchase matters more than the date on the invoice.
What Bonus Depreciation Actually Does
Normally, when a business buys a long-lived asset, the cost is recovered gradually through depreciation. A $50,000 piece of equipment with a seven-year recovery period does not produce a $50,000 deduction in year one. It produces a fraction of that, spread across seven tax years.
Bonus depreciation accelerates that. Instead of waiting years to recover the cost, a business may deduct the full amount immediately.
This does not create a larger total deduction over the life of the asset. It moves the deduction forward, which improves cash flow in the year of purchase.
A quick history of the phase-down
Bonus depreciation was set at 100% under the Tax Cuts and Jobs Act, then began stepping down: 80% in 2023, 60% in 2024, and 40% in 2025. It was scheduled to disappear entirely.
OBBBA reversed that phase-down and restored the full 100% deduction. Business owners who made purchasing decisions based on the old declining schedule may want to revisit their plans.
What Property Qualifies
Bonus depreciation generally applies to tangible property with a recovery period of 20 years or less. Common examples for small businesses include:
- Machinery, tools, and heavy equipment
- Computers, servers, and office technology
- Office furniture and fixtures
- Business vehicles, subject to separate limitations
- Certain qualified improvement property, such as interior renovations to nonresidential buildings
- Off-the-shelf software
Importantly, the property does not have to be new. Used equipment can qualify, provided it is new to your business and was not acquired from a related party.
What does not qualify
- Land, which is never depreciable
- Buildings and structural components, which have recovery periods well over 20 years
- Property acquired from a related party or through certain nontaxable exchanges
- Property used 50% or less for business, which faces different rules
- Inventory held for resale
“Placed in Service” Is the Deadline That Matters
This is the detail that catches business owners off guard every December.
The deduction is not triggered by the purchase date, the invoice date, or the date you paid. It is triggered when the property is placed in service, meaning it is ready and available for its intended use in your business.
Consider two scenarios:
Scenario one: You order a piece of equipment on December 20 and pay in full. It arrives on January 8 and is installed the following week. The deduction belongs to the following tax year, not the current one.
Scenario two: You take delivery of the same equipment on December 27 and it is set up and operational before year-end. The deduction belongs to the current tax year.
Same purchase, same money, two different tax years. If you are counting on a deduction this year, build in lead time for delivery, installation, and setup.
Bonus Depreciation vs. Section 179: They Are Not the Same
Both allow an immediate write-off, and business owners often use the terms interchangeably. They work differently.
Section 179
- Has an annual dollar limit on how much you can expense
- Phases out once total equipment purchases exceed a threshold
- Cannot create or increase a business loss, it is limited to taxable business income
- Can be applied selectively, asset by asset
Bonus depreciation
- Has no dollar cap on the deduction amount
- Has no purchase-volume phase-out
- Can create or increase a net operating loss
- Applies automatically to entire asset classes unless you formally elect out
That last point matters. Bonus depreciation is the default. If you would rather spread deductions across future years, perhaps because you expect to be in a higher bracket later, you must actively elect out. Doing nothing means taking the full deduction now.
Many businesses use both, applying Section 179 to selected assets first and letting bonus depreciation handle the remainder.
Business Vehicles Follow Special Rules
Vehicles are where the biggest misunderstandings happen.
Passenger automobiles are subject to annual depreciation caps under Section 280F, which limit the first-year deduction well below the vehicle’s full cost, even with bonus depreciation available.
Heavier vehicles are treated differently. A vehicle rated above 6,000 pounds gross vehicle weight is generally not subject to the passenger automobile caps, which is why work trucks, cargo vans, and large SUVs often produce far larger first-year deductions.
Two conditions still apply regardless of weight:
- Business use must exceed 50%. If business use drops below that threshold in a later year, previously claimed deductions may have to be recaptured as income.
- Mileage must be documented. A contemporaneous log separating business from personal miles is what supports the deduction if the IRS asks.
A vehicle used 60% for business produces a deduction based on 60% of its cost, not the whole thing.
When Taking the Full Deduction Is the Wrong Move
A 100% write-off is not automatically the best outcome. Consider spreading deductions instead if:
- You expect significantly higher income next year. A deduction is worth more in a higher-bracket year. Accelerating everything into a low-income year can waste it.
- You are near a QBI deduction threshold. Large deductions reduce taxable income, which interacts with the qualified business income calculation in ways that are not always favorable.
- You need to show income for financing. Lenders look at profitability. A large paper loss can complicate a mortgage, SBA loan, or line of credit application.
- You have unused losses already. Stacking more deductions onto an existing loss may produce no current benefit.
This is a planning conversation, not a filing-season one. Once the year closes, most of these choices are locked in.
Pennsylvania Does Not Always Follow Federal Rules
A federal deduction does not automatically flow through to your state return.
Pennsylvania has historically had its own treatment of bonus depreciation, and the state calculation can differ substantially from the federal one. Businesses may claim a large federal deduction while recovering the cost more slowly for Pennsylvania purposes.
If you operate in Philadelphia, city-level business taxes add another layer. Before assuming a purchase produces a specific total tax benefit, confirm how it will be treated at the federal, state, and local level. Current guidance is available from the Pennsylvania Department of Revenue.
What to Do Between Now and Year-End
1. Project your income before you buy
The value of a deduction depends on the bracket it offsets. Run a realistic full-year projection before committing to a large purchase, not after.
2. Confirm delivery and installation timelines in writing
If the deduction depends on placing property in service this year, get the vendor’s committed delivery and setup dates on paper. Supply chain delays have cost business owners entire tax years.
3. Separate genuine business needs from tax-motivated spending
A deduction reduces taxable income. It does not refund the purchase price. Spending $60,000 to save roughly $20,000 in tax is only sensible if the business actually needed the asset.
4. Set up documentation from day one
Keep the invoice, proof of payment, delivery confirmation, and evidence of when the asset was placed in service. For vehicles, start the mileage log immediately rather than reconstructing it in April.
The Bottom Line
The return of 100% bonus depreciation is one of the more useful provisions in OBBBA for small businesses that own physical assets. It is also one of the easiest to get wrong, because the deduction depends on when property is placed in service, how it is used, whether the state conforms, and whether accelerating the write-off is even in your interest this year.
The businesses that benefit most are the ones that plan the purchase around the tax result, rather than discovering the tax result after the purchase.
Thinking about a major equipment or vehicle purchase before year-end? JD Tax & Accounting Advisors helps Philadelphia business owners model the actual tax impact before they sign, so the deduction lands in the year it does the most good. Book a free consultation to walk through your numbers.
This article provides general educational information and does not constitute individualized tax or legal advice. Tax treatment depends on your entity structure, income, asset usage, and state and local filing requirements.