You can write off a truck on your taxes if you use it in a trade or business, and the size of the deduction depends mostly on the truck’s gross vehicle weight rating and how heavily you use the vehicle for work. A heavy truck rated above 6,000 pounds can qualify for a full first-year write-off under Section 179 combined with 100% bonus depreciation. A lighter truck is capped at a few thousand dollars a year and the deduction gets spread over several years. Employees driving their own truck for a job generally cannot deduct anything.
Who Can Claim the Deduction
The write-off is available to self-employed individuals, sole proprietors, partnerships, S corporations, and C corporations that use a truck in a trade or business. The expense has to be “ordinary and necessary” for your line of work, meaning it’s the kind of cost that’s common in your industry and genuinely useful for running the business.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses
W-2 employees are shut out. The Tax Cuts and Jobs Act of 2017 eliminated the deduction for unreimbursed employee expenses through at least 2025, and later legislation has not brought it back. Even if you drive your personal truck constantly for your job, you cannot deduct it on your own return. The only route is to get reimbursed through your employer’s accountable plan, which requires you to document your business mileage and return any excess reimbursement within a reasonable time.2Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
You Need More Than 50% Business Use
The truck must be used more than half the time for business to unlock the meaningful tax benefits. Drop below that line and you lose access to Section 179, bonus depreciation, and accelerated depreciation entirely. You’re left with straight-line depreciation over a longer recovery period, which thins the deduction out considerably.3Internal Revenue Service. Instructions for Form 4562 (2025)
Only the business-use share of your truck expenses is deductible. Use the truck 70% for work and 30% for personal errands, and you deduct 70% of the eligible costs. Commuting between home and your regular workplace always counts as personal use, no matter how far the drive or whether you take business calls along the way.2Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
Heavy Trucks Over 6,000 Pounds: The Full Write-Off
The biggest deductions live above the 6,000-pound line. Trucks with a gross vehicle weight rating over 6,000 pounds are exempt from the “luxury automobile” depreciation caps that limit write-offs on lighter vehicles, which means the entire purchase price can potentially be deducted in the year the truck is placed in service.
Section 179 lets you expense up to $2,560,000 of qualifying equipment placed in service during the 2026 tax year. The ceiling phases out dollar-for-dollar once total qualifying purchases exceed $4,090,000, so the deduction is really designed for small and mid-sized businesses. One wrinkle to watch: SUVs rated between 6,000 and 14,000 pounds are subject to a separate $32,000 cap on Section 179. Pickup trucks with a full-size cargo bed are generally not classified as SUVs for this rule, so a Ford F-250 or Chevy Silverado 2500 HD can qualify for the full deduction while a large luxury SUV cannot.4Internal Revenue Service. 2025 Instructions for Form 4562 – Depreciation and Amortization
Bonus depreciation adds another layer. After the phase-down schedule reduced bonus depreciation to 60% in 2024, Congress permanently restored it to 100% for property acquired and placed in service after January 19, 2025. For a heavy truck bought in 2026, you can stack Section 179 with 100% bonus depreciation to write off the full cost in year one. Bonus depreciation applies automatically unless you elect out, and it applies to whatever cost remains after Section 179.
To be treated as a truck rather than a passenger vehicle, the cargo bed generally needs to be at least six feet (72 inches) in interior length. Vehicles with a bed that size are exempt from the medium-duty passenger vehicle classification even if they’re rated above 8,500 pounds GVWR.5eCFR. 49 CFR Part 523 – Vehicle Classification
Lighter Trucks Face Annual Caps
Trucks and vans rated at 6,000 pounds GVWR or less are classified as passenger automobiles for depreciation purposes, and the annual deduction is capped. For a lighter truck placed in service in 2026, Rev. Proc. 2026-15 sets a first-year limit of $20,300 with bonus depreciation, or $12,300 without it. Subsequent-year limits are $19,800 in year two, $11,900 in year three, and $7,160 in each year after that until the cost is fully recovered.6Internal Revenue Service. Rev. Proc. 2026-15
The practical effect: buy a $45,000 half-ton pickup rated under 6,000 pounds and you cannot write off the full price in year one. You’ll claim $20,300 the first year (assuming 100% business use and bonus depreciation) and chip away at the rest over the following years. That’s still a real deduction. It just pales next to what a heavier truck offers, which is why the 6,000-pound GVWR line drives so many purchase decisions.
Standard Mileage Rate or Actual Expenses
You have two ways to calculate the deductible value of using your truck for business. The right choice depends on your operating costs and how much recordkeeping you want to do.
Standard Mileage Rate
For 2026, the IRS set the business standard mileage rate at 72.5 cents per mile.7Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents Multiply your business miles by that rate and that’s your deduction. No need to track individual fuel receipts or repair invoices. Drive 20,000 business miles, and your deduction is $14,500.
The catch is timing. You must elect the standard mileage rate in the first year the truck is available for business use. Claim actual expenses that first year and you’re locked into the actual expense method for the life of that vehicle. Start with the standard mileage rate and you can switch to actual expenses in later years.2Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses For a leased truck, the rule is stricter: choose the standard mileage rate and you must use it for the entire lease period.
Actual Expense Method
The actual expense method requires tracking every cost of operating the truck: fuel, oil changes, tires, repairs, insurance, registration, and depreciation. Total everything up, then multiply by your business-use percentage. This method tends to produce a larger deduction for expensive trucks with high operating costs, and it’s the only way to claim Section 179 or bonus depreciation.
The tradeoff is paperwork. You need receipts or records for every expense category, and you still need a mileage log to calculate your business-use percentage. For a contractor running a $70,000 diesel truck, actual expenses almost always win. For a real estate agent putting light miles on a midsize pickup, the standard mileage rate is usually simpler and often comparable.
Leasing Instead of Buying
Lease a truck rather than buy it and you deduct the business portion of your lease payments instead of claiming depreciation. Lease payments are generally deductible as a business expense in the year you pay them, which keeps the math straightforward.
The complication is the lease inclusion amount. If your leased truck had a fair market value above $62,000 when the lease began, the IRS requires you to reduce your deduction by a small amount each year, which prevents taxpayers from dodging the depreciation caps by leasing expensive vehicles rather than buying them.6Internal Revenue Service. Rev. Proc. 2026-15 The reduction is modest for most trucks and grows with the vehicle’s value. Rev. Proc. 2026-15 publishes lookup tables with the exact dollar amount based on fair market value.
Leasing also means you cannot claim Section 179 or bonus depreciation, because you don’t own the asset. For heavy trucks that would qualify for a full first-year write-off, buying is usually the better tax move. Leasing makes more sense when you want lower monthly cash outlays, plan to swap trucks every few years, or the truck is a lighter model subject to the depreciation caps anyway.
What Happens if Business Use Drops Later
This is where people get burned. If you claimed Section 179 or bonus depreciation and your business use later drops to 50% or below in any year during the recovery period, the IRS claws back the excess deduction. The technical term is recapture, and it means you’ll owe additional tax in the year the usage drops.8Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles
The recapture amount equals the difference between the depreciation you actually claimed (including any Section 179 deduction) and what straight-line depreciation would have allowed for all prior years. That excess gets added to your gross income. Going forward, you must switch to straight-line depreciation for the rest of the recovery period. Recapture is reported on Form 4797.9Internal Revenue Service. 2025 Instructions for Form 4797 – Sales of Business Property
The recovery period for trucks is generally five years under MACRS. So if you buy a truck in 2026 and take the full Section 179 deduction, you need to keep business use above 50% through at least 2031. Dropping to part-time business use in year three of a $60,000 truck you fully expensed in year one can trigger a five-figure tax bill.
Records You Need to Keep
A truck deduction without proper records will not survive an audit. The most important document is a contemporaneous mileage log showing the date, destination, business purpose, and miles driven for every business trip. Contemporaneous means recorded at or near the time of the trip, not reconstructed at year-end from memory.
Beyond the mileage log, keep the sales contract, financing agreement, and proof of the date you placed the truck in service. If you use the actual expense method, hold onto receipts for fuel, maintenance, insurance, tires, and registration. And save a photo of the manufacturer’s label on the driver’s door jamb or the vehicle specification sheet confirming the GVWR, which is what supports the heavy-truck classification.
Digital records are acceptable, but the IRS requires that electronic records be exact copies of the original books of entry. Reconstructing a mileage spreadsheet from memory during an audit does not satisfy IRS requirements, even if the spreadsheet looks complete. The backup must reflect original, contemporaneous data.10Internal Revenue Service. Use of Electronic Accounting Software Records – Frequently Asked Questions and Answers
Part V of Form 4562 specifically asks whether you have written evidence supporting your business-use claim and whether the vehicle was available for personal use during off-duty hours. Answering “no” to the evidence question is essentially inviting an audit.3Internal Revenue Service. Instructions for Form 4562 (2025)
How to Report It on Your Return
The forms depend on your business structure. Sole proprietors and single-member LLCs report the deduction on Schedule C, which attaches to Form 1040. The Section 179 deduction and depreciation are calculated on Form 4562, which also attaches to the return.11Internal Revenue Service. About Form 4562, Depreciation and Amortization Partnerships and S corporations report the deduction on their entity returns and pass it through to owners on Schedule K-1.
Claiming the standard mileage rate skips Form 4562 for depreciation, but you still report the vehicle expense on Schedule C. On Form 4562 itself, Section 179 deductions go in Part I, bonus depreciation and regular MACRS depreciation in Parts II and III, and vehicle-specific questions in Part V (Listed Property). The listed property section asks for total miles, business miles, commuting miles, and whether you have written documentation. Those fields must match your mileage log.
The Clean Vehicle Credit for Trucks Is Gone
If you were considering an electric or plug-in hybrid truck, timing matters. The commercial clean vehicle credit under IRC Section 45W, which offered up to $7,500 for trucks under 14,000 pounds GVWR, is not available for vehicles acquired after September 30, 2025.12Internal Revenue Service. Clean Vehicle Tax Credits The new clean vehicle credit under IRC Section 30D was also cut off at the same date. If you acquired and made a payment on a qualifying electric truck before that deadline, you can still claim the credit when you place it in service in 2026. Otherwise, the credit is unavailable for new acquisitions, and the depreciation and Section 179 strategies above are your primary tax tools whether the truck runs on diesel, gas, or electricity.