When buying trucks for your business, understanding bonus depreciation can save you a lot on taxes. Thanks to the One Big Beautiful Bill Act (OBBBA) of 2025, businesses can now deduct 100% of the purchase price of new or used trucks in the first year they’re put into service. This applies to trucks bought after January 19, 2025, and placed in service by December 31 of the same year.
Here’s what you need to know:
- Bonus Depreciation: Deduct the full cost of a truck in the first year (no dollar limit). It can also create a Net Operating Loss (NOL) to offset future income.
- Section 179: Another upfront deduction option, but it has a $2,560,000 cap in 2026 and cannot create an NOL.
- Eligibility: Both new and used trucks qualify if they’re used over 50% for business, have a Gross Vehicle Weight Rating (GVWR) over 6,000 lbs, and meet IRS requirements.
- New vs. Used: New trucks qualify automatically; used trucks must be "new to you" and not purchased from related parties.
Quick Comparison:
| Feature | New Trucks | Used Trucks |
|---|---|---|
| Bonus Depreciation Rate | 100% | 100% |
| Purchase Price (Class 8) | $150,000–$180,000 | $55,000–$80,000 |
| Market Depreciation (Year 1) | 15–25% loss | Slower depreciation |
| IRS Eligibility | Automatic | Must pass "unrelated party" test |
To maximize tax savings, combine Section 179 and bonus depreciation, and ensure trucks are placed in service by year-end. Always consult a CPA for tailored advice.
Bonus Depreciation for New Trucks
How the IRS Defines a New Truck
A truck is considered "new" by the IRS if its original use begins with the taxpayer. As the IRS explains:
"The original use requirement will be met if the original use of the property commences with the taxpayer."
This definition is key to determining whether a truck qualifies for bonus depreciation.
Eligibility Rules for New Trucks
New trucks can qualify for 100% bonus depreciation if the purchase contract is signed after January 19, 2025, and the truck is in service by December 31 of the same year. Most commercial trucks are categorized as MACRS 5-year property, while over-the-road tractors fall under 3-year property. Bonus depreciation is applied automatically unless you choose to opt out.
To maximize the benefit, ensure the truck’s Gross Vehicle Weight Rating (GVWR) exceeds 6,000 lbs. This avoids luxury vehicle caps and allows for full deductions under bonus depreciation rules. Let’s break down how GVWR influences first-year deductions for light-duty and heavy-duty trucks.
Light-Duty vs. Heavy-Duty Trucks: Depreciation Differences
The first-year deduction depends heavily on the truck’s GVWR:
| Vehicle Type | GVWR | First-Year Deduction |
|---|---|---|
| Light-Duty Truck or Van | 6,000 lbs or less | $20,300 |
| Heavy-Duty Truck | Over 6,000 lbs | Full purchase price – no cap |
| Heavy SUV | 6,000–14,000 lbs | Full cost (subject to a $32,000 Section 179 sublimit first) |
For trucking businesses, the difference is substantial. For example, a new Class 8 tractor priced between $160,000 and $165,000 can be fully expensed in the first year if its GVWR exceeds 6,000 lbs. In contrast, a light-duty pickup used partially for business is limited to a $20,300 deduction.
It’s also worth noting that trade-ins no longer affect your depreciable basis. Since 2018, trade-ins are treated as separate transactions – the old vehicle is considered sold, and the new one is treated as a fresh purchase. This ensures that the full purchase price of your new truck becomes the depreciable basis, allowing you to take full advantage of bonus depreciation.
Bonus Depreciation for Used Trucks
What Counts as a Used Truck Under IRS Rules
For bonus depreciation, a used truck qualifies if it’s "new to the taxpayer." In simple terms, this means you’ve never owned or used the vehicle before. Even if your business leased the truck previously and then decided to purchase it, it won’t qualify for bonus depreciation.
"A taxpayer who previously leased property and later purchases it cannot claim bonus depreciation because they previously used the property in their business." – TaxSharkInc
The IRS also imposes restrictions based on how the truck’s basis is determined. For instance, if the depreciable basis is carried over from the seller in a tax-deferred exchange or determined under rules for property inherited from a decedent, the truck won’t meet the criteria.
Eligibility Rules for Used Trucks
Once you’ve established that a truck qualifies as "used" under IRS definitions, it must also meet several usage and acquisition criteria. These requirements are similar to those for new trucks. Specifically, the truck must:
- Be placed in service during the tax year.
- Be used more than 50% for business purposes.
- Be acquired under a valid, qualifying contract.
The truck’s Gross Vehicle Weight Rating (GVWR) also plays a key role. For example, a used Class 8 semi-truck with a GVWR exceeding 6,000 pounds qualifies for full expensing. However, lighter vehicles, like a pickup with a GVWR of 6,000 pounds or less, are capped at $20,300.
Even if a truck meets these requirements, compliance challenges can arise, so it’s important to address them carefully.
Common Compliance Issues
To ensure your tax strategy stays on track, be mindful of common compliance hurdles. Some of the most frequent issues include:
- Related-party transactions: If you purchase a truck from a family member, a business partner with more than 50% ownership, or a related entity, the truck becomes ineligible. Always confirm that the seller is not a related party.
- Documentation requirements: Trucks fall under the "listed property" category, which means you must keep detailed mileage logs to document business use. Also, remember that the acquisition date is the date you sign the binding contract – not when the truck is delivered or paid for.
"The ‘acquisition date’ is the date of the binding written contract, not the date you received or paid for the asset." – Reed Corporation CPA Firm
Additionally, trucks purchased under contracts signed before January 20, 2025, may only qualify for a 20% or 40% bonus rate under the older TCJA phasedown schedule. This contrasts with the current 100% rate. Be aware that some states, like California and New York, do not align with federal bonus depreciation rules, which could result in state taxes even if you qualify for a full federal deduction.
100% Bonus Depreciation Is Back! Here’s How to Use It
sbb-itb-0058693
New vs. Used Trucks: Tax Differences
New vs. Used Trucks: Bonus Depreciation & Tax Benefits Compared (2025–2026)
Side-by-Side Tax Benefit Comparison
Thanks to the One Big Beautiful Bill Act (OBBBA) of 2025, both new and used trucks now qualify for 100% bonus depreciation. The differences, however, lie in eligibility requirements, market depreciation, and upfront costs.
| Feature | New Trucks | Used Trucks |
|---|---|---|
| Bonus Depreciation Rate | 100% (acquired after 1/19/25) | 100% (acquired after 1/19/25) |
| IRS Eligibility | Automatic for qualified property | Must pass 5-point "unrelated party" test |
| Market Depreciation (Year 1) | 15–25% loss in value | Slower; most depreciation already realized |
| Typical Purchase Price (Class 8) | $150,000–$180,000 | $55,000–$80,000 |
| Section 179 Limit (2026) | $2,560,000 | $2,560,000 |
| Luxury Auto Cap (GVWR > 6,000 lbs) | Exempt; full deduction applies | Exempt; full deduction applies |
One standout difference: new trucks qualify automatically as eligible property under IRS rules, while used trucks must meet a five-point "unrelated party" test to qualify.
This comparison highlights how deductions tied to truck purchases can impact cash flow and financing decisions.
How Front-Loaded Deductions Affect Cash Flow and Financing
Taking advantage of a 100% first-year deduction can significantly reduce your federal taxable income for the year you purchase a truck. However, the financial impact varies depending on whether you buy a new or used vehicle.
For example, a new Class 8 truck priced at $160,000, financed at $3,000–$3,500 per month, creates substantial debt. The full first-year deduction lowers your federal tax bill, but financing obligations remain significant.
On the other hand, a used Class 8 truck – with an average same-dealer retail price of $57,135 in December 2025 – offers a full deduction on a smaller purchase amount. This lower upfront cost and reduced debt service often lead to better net cash flow in the first year, even though the deduction itself is smaller in absolute terms.
"The timing of equipment sales matters. Trading equipment in a year with lower taxable income… is something to model with your CPA before you sign a purchase agreement, not after." – Adam Wingfield
Unlike Section 179, bonus depreciation can also create a Net Operating Loss (NOL). This loss can be carried forward to offset up to 80% of taxable income in future years. This feature is particularly useful if your income varies seasonally or from year to year.
Mixing New and Used Trucks in a Fleet
Managing a mixed fleet – combining new and used trucks – is a practical approach for balancing tax benefits with operational needs. Keep in mind that bonus depreciation applies across an entire asset class. Electing it for one 5-year MACRS asset means it automatically applies to all 5-year assets placed in service that year.
For mixed fleets, a smart strategy is to apply Section 179 to specific assets and use bonus depreciation on the remaining basis. This approach helps manage taxable income effectively.
"Section 179 is still capped by business income; bonus depreciation isn’t, which is why the sequencing matters in any year you have a large equipment buy and modest income." – Lewis Group CPAs
With permanent 100% bonus depreciation, the focus shifts to timing purchases based on operational needs rather than rushing to meet year-end deadlines. As Reed Corporation CPA Firm advises, "Buy the right property at the right price. The depreciation benefit will be there whenever you close.". This flexibility allows fleet managers to prioritize operational fit over tax deadlines.
Tax Planning Tips for Trucking Businesses
These tax planning tips build on the earlier discussion about bonus depreciation differences, offering practical strategies to help trucking businesses improve cash flow. By understanding the tax implications of new versus used trucks, you can make informed decisions to optimize your financial outcomes.
Combining Section 179 and Bonus Depreciation
When using both Section 179 and bonus depreciation, the IRS requires a specific sequence: apply Section 179 first, then bonus depreciation on the remaining balance, and finally, use MACRS (Modified Accelerated Cost Recovery System). Section 179 has a cap of $2,560,000 for 2026 and cannot bring your taxable income below zero. On the other hand, bonus depreciation has no dollar limit and can even create a net operating loss (NOL), which can be carried forward to offset future taxable income.
The general strategy? Use Section 179 to reduce taxable income, then apply bonus depreciation to the remaining truck cost. However, state tax rules may differ from federal guidelines, so it’s essential to check local regulations. Matt Curler, CPA and Owner of Curler Accounting & Tax Services, emphasizes the importance of a thoughtful approach:
"The right strategy can let you expense much of the cost in the first year, lower your taxable income, and improve cash flow."
Timing your truck purchases strategically is the next step in maximizing these benefits.
Timing Truck Purchases for Better Deductions
Thanks to the One Big Beautiful Bill Act (OBBBA), 100% bonus depreciation is now permanent. While there’s less urgency to finalize purchases before year-end, the "placed-in-service" date is still critical. To claim the deduction, the truck must be delivered and operational by December 31.
Your income level plays a big role in how valuable the deduction is. Purchasing a truck during a high-income year allows you to offset income taxed at a higher marginal rate, giving you more bang for your buck. On the flip side, buying during a low-income year could reduce the deduction’s impact. A tax expert from American Trucking Business Services warns:
"Zeroing out your income by gorging on expense deductions is a short-sighted strategy – you’re missing out on other qualifying deductions, which you’ll never get back."
Additionally, if you purchase a truck under a binding contract on or before January 19, 2025, it may only qualify for 20% bonus depreciation in 2026 under the older phase-down schedule, rather than the full 100%.
Tools and Resources to Support Your Tax Strategy
Having the right tools and expert help can make all the difference. Specialized firms like American Trucking Business Services and Lewis Group CPAs focus on trucking-specific deductions that general tax preparers often miss. These include per diem expenses, off-highway fuel credits, heavy vehicle depreciation, and even retirement contributions. As Lewis Group CPAs notes:
"The deductions go unclaimed when the preparer doesn’t apply the trucking-specific rules. The most common categories owner-operators come to us not having taken: per diem, the off-highway fuel credit, the home-office deduction, and any retirement contribution at all."
To stay organized, use mileage tracking apps like MileIQ or Everlance, and consider GPS fleet systems such as Verizon Connect. Remember, to claim Section 179 or bonus depreciation, the truck must be used for business purposes more than 50% of the time.
For additional support, Quick Transport Solutions provides tools and resources, including trucking company directories and a blog focused on market trends that can guide your equipment purchasing decisions.
Finally, don’t forget to file IRS Form 4562 and keep detailed records, including receipts, delivery documents, and mileage logs, for at least six years.
Conclusion and Key Takeaways
In 2026, both new and used trucks will qualify for 100% bonus depreciation under the One Big Beautiful Bill Act (OBBBA). However, for used trucks, there’s a key condition: they must be "new to you." This means the truck cannot have been previously owned or used by your business, nor can it be purchased from a related party.
For heavy trucks with a Gross Vehicle Weight Rating (GVWR) over 6,000 lbs, the tax advantages are even greater. These vehicles are exempt from the "luxury auto" depreciation caps, which limit lighter vehicles to about $20,200 in first-year deductions. Instead, heavy-duty vehicles like Class 8 semi-trucks or large pickups allow for a full 100% write-off. This distinction can lead to significant tax savings. Kenneth Dennis, CEO of Uncle Kam, emphasizes the importance of understanding these strategies:
"Understanding which strategy fits your situation could save you thousands in federal taxes this year."
A standout feature of bonus depreciation is its ability to generate a Net Operating Loss (NOL). Unlike Section 179, bonus depreciation can reduce your taxable income below zero, creating an NOL that you can carry forward to offset future profits. This flexibility makes it an essential tool for improving cash flow.
To take advantage of these benefits, trucks must be placed in service by December 31 of the tax year. If you operate in states like California, Illinois, or New York, be sure to review local conformity rules, as these federal benefits may not fully apply at the state level.
Ultimately, every equipment purchase is more than just a business decision – it’s also a tax decision. As FreightWaves aptly notes:
"Equipment acquisition decisions are also tax decisions."
The truck you choose, and the timing of its use, directly impacts your tax obligations, cash flow, and overall financial outlook.
FAQs
Does a financed or leased truck still qualify for 100% bonus depreciation?
Yes, if you finance a truck, you can claim 100% bonus depreciation because you’re considered the owner of the vehicle. To qualify, the truck must be used for business purposes and meet IRS guidelines, such as being new to you. On the other hand, if you have a true operating lease, the leasing company retains ownership, which means you cannot claim depreciation. For more guidance on these business matters, Quick Transport Solutions Inc. offers resources tailored to trucking professionals.
What does “placed in service” mean for claiming the first-year deduction?
When it comes to taxes, the term placed in service refers to the moment a truck is fully ready and available for the business purpose it was intended for. This doesn’t mean the date you bought it or even the first time you drove it. Instead, it’s when the vehicle is completely prepared to carry out its designated role. Depreciation begins from this point, as long as the truck is used for business purposes at least 50% of the time.
How do state taxes affect bonus depreciation on trucks?
State tax rules for bonus depreciation can differ significantly from one state to another. While some states align with federal guidelines and permit bonus depreciation or Section 179 deductions, others take a different approach and do not. To stay on the right side of the law, it’s crucial to check with a licensed tax professional in your state. They can verify whether your state follows federal bonus depreciation rules, including those brought back by the One Big Beautiful Bill Act.