Overview: How a New Truck Can Reduce Your Taxes Fast

Accelerated depreciation helps small businesses write off a new truck fast. Learn Section 179 vs. bonus depreciation, examples, and pitfalls in this guide from Curler Accounting. If you run deliveries, haul tools, or travel to job sites, a truck is often your most important asset. It can also be one of your most valuable tax deductions when you use accelerated depreciation. The right strategy can let you expense much of the cost in the first year, lower your taxable income, and improve cash flow. In this blog, Matt Curler, CPA, and owner of Curler Accounting & Tax Services, LLC, explains how Section 179, bonus depreciation, and regular MACRS depreciation work for trucks, plus how to avoid common mistakes that trigger IRS scrutiny.

What Is Accelerated Depreciation?

Accelerated depreciation refers to IRS rules that let you deduct more of an asset’s cost early in its life rather than spreading it evenly over time. For vehicles used in business, the main tools are Section 179, bonus depreciation, and MACRS. Together, they can produce a large first-year write-off for a qualifying truck, often when cash flow needs are highest for a growing business.

Key Benefits of Accelerated Depreciation

• Front-load deductions to reduce current-year taxable income
• Potentially create or increase a net operating loss with bonus depreciation
• Match tax savings to the period when the truck is most productive
• Enhance cash flow to reinvest in inventory, payroll, or marketing

Section 179 vs. Bonus Depreciation: What Is the Difference?

Both Section 179 and bonus depreciation are forms of accelerated depreciation, but they work differently. Many small businesses use a mix of the two to maximize deductions while staying compliant.

Section 179 Expensing

Section 179 lets you elect to expense part or all of the purchase price of qualifying equipment, including trucks, placed in service during the year. For 2024, the maximum Section 179 deduction is $1,220,000 with a phaseout starting at $3,050,000 in equipment purchases. These amounts adjust annually, so check the current year before filing. Section 179 is limited by your taxable business income. It cannot create or increase a net loss. Unused amounts can be carried forward. To claim Section 179 on a vehicle, business use must be more than 50 percent in the year you place it in service.

Bonus Depreciation

Bonus depreciation is taken after Section 179 and can apply to new or used property, as long as it is new to you. It is not limited by taxable income, so it can create or increase a loss. Federal bonus depreciation is phasing down. It was 100 percent through 2022, 80 percent for 2023, 60 percent for 2024, 40 percent for 2025, and 20 percent for 2026 unless Congress changes the law. Bonus is calculated after reducing basis for any Section 179 deduction.

MACRS Depreciation

After Section 179 and bonus depreciation, any remaining basis is depreciated using MACRS. Most trucks are 5-year property for federal tax, typically using the 200 percent declining balance method with a half-year or mid-quarter convention.

Which Vehicles Qualify, and Why Weight Matters

Not every truck is treated the same. The vehicle’s gross vehicle weight rating, type, and configuration determine how much accelerated depreciation you can claim.

Heavy Trucks and Pickups

Trucks and vans with a gross vehicle weight rating over 6,000 pounds and under 14,000 pounds are generally not subject to luxury auto limits. A heavy pickup with a cargo bed at least six feet long usually qualifies for full Section 179 up to the annual limit, plus bonus depreciation, subject to your business income and basis. These vehicles are excellent candidates for accelerated depreciation.

Heavy SUVs

Heavy SUVs over 6,000 pounds face a special Section 179 cap. For 2024, there is a $30,500 limit on Section 179 for many heavy SUVs. This cap does not apply to cargo vans, certain vehicles with no rear seat, or pickups with a bed of at least six feet. After applying the SUV Section 179 cap, you can still use bonus depreciation on remaining basis.

Passenger Autos Under 6,000 Pounds

Passenger vehicles with a gross vehicle weight rating of 6,000 pounds or less are subject to annual luxury auto depreciation limits under Section 280F. That means Section 179 and bonus depreciation are restricted, and deductions are spread over several years. If your “truck” is a small crossover or light SUV, expect limits unless it exceeds the 6,000-pound threshold.

Business Use Requirement

To use Section 179 or bonus on any vehicle, you must exceed 50 percent qualified business use in the year placed in service, and you must maintain solid records. If business use falls below 50 percent in a later year, you could face depreciation recapture. Commuting is personal use and does not count as business. Keep a mileage log or reliable app.

How the Write-Off Works: Step-by-Step Examples

Example 1: Heavy Pickup, High Business Use

Assume you buy a heavy-duty pickup with a gross vehicle weight rating of 7,500 pounds for $70,000, used 90 percent for business. Basis for depreciation is $63,000. You could choose Section 179 on part or all of that $63,000, limited by your taxable income. If you still have remaining basis, apply bonus depreciation at the current year’s percentage. Any remainder is depreciated under MACRS. This approach often delivers a large first-year deduction, but you still need to consider cash flow, future income, and potential recapture if business use declines.

Example 2: Heavy SUV With Section 179 Cap

Assume a heavy SUV with a purchase price of $80,000 and 100 percent business use in 2024. Section 179 is capped at $30,500 for many heavy SUVs. After electing $30,500, your remaining basis is $49,500. You can then apply 60 percent bonus depreciation for 2024 to that remaining basis if you choose, followed by MACRS on the rest. You can tailor the mix based on your projected income and state conformity rules.

Example 3: Passenger Vehicle Under 6,000 Pounds

Assume a small SUV with a gross vehicle weight rating of 5,500 pounds used 80 percent for business. This vehicle is subject to the luxury auto limits, which restrict both Section 179 and bonus depreciation. You will likely deduct a smaller amount in year one and spread the rest over several years under the annual caps, even with high business use.

Cash vs. Financing, Leasing vs. Buying

Cash or Loan

You can often claim accelerated depreciation even if you finance the truck. The deduction is based on cost, not on cash paid in year one. Interest on a business auto loan may also be deductible as a business expense, separate from depreciation.

Lease or Buy

If you lease, you generally deduct lease payments rather than depreciate the vehicle. For some heavy vehicles, buying can unlock larger first-year deductions through accelerated depreciation. For seasonal cash flow, a lease may be simpler. Curler Accounting can model both options based on your tax bracket and revenue forecasts.

Documentation: What You Must Track

• Odometer readings at the start and end of each year
• Mileage logs showing date, destination, business purpose, and miles
• Receipts for purchase price, sales tax, title, delivery, and accessories
• Financing documents and interest paid
• Insurance and registration showing the vehicle and coverage dates

Good records protect your deduction if the IRS asks for proof. Matt Curler’s military and law enforcement background shows in Curler Accounting’s attention to detail. Clients rely on that precision when it matters most.

Common Pitfalls and How to Avoid Them

Mixing Personal and Business Miles Without Proof

Relying on estimates is risky. Without a mileage log or app, examiners can deny accelerated depreciation. Create a simple routine to log trips weekly or use a GPS-based mileage app.

Falling Below 50 Percent Business Use

If business use drops below 50 percent in a later year, you may have to recapture part of your prior Section 179 or bonus deduction as income. Plan vehicle assignments and driver policies to keep business use above the threshold.

Ignoring State Conformity

Not all states follow federal rules for accelerated depreciation. Some, including Wisconsin, often do not fully conform to federal bonus depreciation and may limit Section 179. This can create differences between your federal and state returns. Curler Accounting can help you map the federal and Wisconsin impact so there are no surprises.

Overlooking the SUV Section 179 Cap

Many heavy SUVs are capped for Section 179 purposes. Pickups with a long cargo bed and certain cargo vans may be exempt. Get the vehicle specs, including gross vehicle weight rating and bed length, before you buy.

Forgetting About Accessories and Upfits

Ladder racks, toolboxes, plows, lift gates, bed liners, and commercial wraps may increase basis if purchased and installed with the vehicle. These items can qualify for accelerated depreciation, but timing and invoices matter. Keep receipts and place in service dates.

Standard Mileage vs. Actual Expenses

You can choose between the standard mileage rate and actual expense method, but the choice affects depreciation. If you want to use accelerated depreciation, you will usually choose the actual expense method. The standard mileage rate includes a depreciation component, which limits future deductions if you switch methods later. Curler Accounting can test both methods to see which produces more lifetime savings, not just year one impact.

Electric Trucks and Credits

If your new truck is eligible for a clean vehicle credit or the commercial clean vehicle credit, you can often claim depreciation on the vehicle’s cost net of the credit. Credits can reduce tax dollar for dollar, while accelerated depreciation reduces taxable income. The best path depends on your tax bracket, income forecast, and state rules. Matt Curler has corporate tax experience from KPMG and Harley-Davidson, which he applies to real-world planning for small businesses in Mequon and across Wisconsin.

How Entity Type Affects the Deduction

Whether you operate as a sole proprietor, single-member LLC, partnership, S corporation, or C corporation, the basic accelerated depreciation rules are similar. What changes is where the deduction lands and how it interacts with other tax items.

• Sole proprietor or single-member LLC: Deductions flow to Schedule C. Keep mileage logs and allocate personal use to avoid issues.
• Partnerships and S corporations: Vehicle expenses and depreciation pass through on K-1s. Owner-employee personal use must be tracked and reported for payroll and fringe benefit purposes.
• C corporations: The company claims depreciation, and personal use by employees can trigger imputed income. Documentation and policy are key.

Your choice can also influence qualified business income deductions, reasonable compensation requirements, and payroll taxes. Curler Accounting provides entity formation and planning to line up your vehicle policy with your tax strategy.

Year-End Timing: Placed in Service Rules

You must place the truck in service by year-end to claim accelerated depreciation for that year. Ordering or paying a deposit is not enough. Delivery, insurance, plates, and availability for business use are important. A December purchase can still qualify if documentation shows the vehicle was available and used for business before December 31.

Simple Planning Checklist Before You Buy

1. Confirm the vehicle’s gross vehicle weight rating and bed length if it is a pickup
2. Estimate business use percentage based on routes and jobs
3. Decide between Section 179, bonus depreciation, and MACRS based on current and projected income
4. Consider state conformity, especially if you file in Wisconsin
5. Set up a mileage log or app on day one
6. Coordinate with your lender so delivery and plates occur before year-end if timing matters
7. Review insurance, driver policy, and personal use rules for owners and staff

Frequently Asked Questions

Can I write off a used truck?

Yes. Both Section 179 and bonus depreciation can apply to used trucks, as long as they are new to you and meet business use and other requirements.

Do I have to use the truck 100 percent for business?

No. But to use Section 179 or bonus depreciation, business use must exceed 50 percent in the year placed in service. Your deduction is also limited to the business-use percentage of the vehicle’s cost.

What if I use the truck for personal errands?

That is personal use and is not deductible. Keep accurate logs so you can apply the correct business-use percentage. For S corporation or C corporation owners, personal use may also need to be treated as taxable fringe benefits.

Can I deduct fuel, maintenance, and insurance?

Yes, under the actual expense method you can deduct business portions of fuel, maintenance, repairs, insurance, registration, and interest, in addition to depreciation. If you use the standard mileage rate, these are generally included in the rate and not separately deductible.

What happens if I sell the truck?

You may have to recognize gain, including depreciation recapture, if the sale price exceeds the tax basis. That is another reason to plan your accelerated depreciation strategy with a multi-year view.

Why Work With Curler Accounting

Curler Accounting & Tax Services, LLC helps small businesses use accelerated depreciation the right way. Owner Matt Curler, CPA, brings 20 years in tax, finance, and treasury management, plus hands-on experience at KPMG and Harley-Davidson. As a veteran of the Wisconsin Army National Guard and a former Milwaukee Police Officer, Matt brings discipline, integrity, and attention to detail to every file. Clients across Washington County, Mequon, and beyond choose Curler Accounting for personalized service, small business focus, and practical strategies that make a difference during tax season and all year long.

• Tax Preparation and Planning to minimize liabilities
• Bookkeeping and Payroll for accurate and timely records
• Cash Flow Optimization to help fund vehicles and equipment
• Business Tax and Compliance for LLCs, S corporations, partnerships, and C corporations
• IRS Representation for audits and disputes
• Entity Formation to choose the right structure

Whether you operate a contracting crew, a landscaping business, a delivery route, or a mobile service, Curler Accounting can build a vehicle deduction plan that fits your operations and your state filing requirements.

Action Plan: Get Your Truck Write-Off Right

Buying a new truck is a big move for your business. With the right mix of Section 179, bonus depreciation, and MACRS, you can turn that purchase into a smart tax strategy. The steps are simple: verify the vehicle’s gross vehicle weight rating, estimate business use, choose accelerated depreciation that matches your income, and keep precise records. Add a check for state conformity so your Wisconsin return lines up with your federal plan.

If you want an experienced guide, schedule a consultation with Curler Accounting. Matt will review your vehicle options, run first-year and multi-year projections, and help you document the deduction so you can file with confidence. Curler Accounting can meet in person in Mequon or virtually statewide. With a client-first approach and military-grade precision, we make accelerated depreciation simple, compliant, and effective.

Important Notes and Disclaimers

Tax laws change often. Federal Section 179 limits, SUV caps, bonus depreciation percentages, and luxury auto limits adjust from year to year. State conformity varies, and Wisconsin treatment may differ from federal rules. The examples above are simplified. Your facts will determine your results. This blog is for education only and is not tax advice. Consult Curler Accounting or your own tax advisor before making decisions.

Bottom line, if you need a truck for your business, accelerated depreciation can help you write off a large share of the cost quickly. Done right, it can free up cash, reduce taxes, and support growth. Curler Accounting is ready to help you plan the purchase, implement the records, and claim the deduction with confidence.