Owner-Operator Tax Deductions: Per Diem, Fuel, Truck Payments, and Everything Else the IRS Allows

An owner-operator who runs their own truck is running a small business on wheels, and the IRS taxes it that way. You report income and expenses on Schedule C, you pay self-employment tax on the profit, and you’re entitled to every ordinary and necessary business deduction the Code allows. The problem is that most owner-operators leave money on the table. Per diem alone can be worth $15,000 to $20,000 a year in deductions, and it’s one of the most misunderstood items on a trucker’s return. Add fuel, depreciation, insurance, repairs, and a long list of smaller line items, and the difference between a well-prepared return and a sloppy one is often five figures of overpaid tax.

How does per diem work for truck drivers?

Per diem is a deduction for meals and incidental expenses when you’re traveling away from your tax home overnight. For owner-operators, the “tax home” is usually the location of your home terminal or the metropolitan area where you live and dispatch from. Any day you’re away from that location overnight on business, you can claim the federal per diem rate instead of tracking individual meal receipts.

The standard federal per diem rate for meals and incidental expenses (M&IE) varies by location, but the IRS publishes a simplified “special rate” for the transportation industry: $69 per day within the continental United States and $74 per day for travel outside CONUS (including Canada) for 2024. These rates are updated annually by the General Services Administration. You don’t need receipts for meals when you use the per diem method, which is the main reason truckers prefer it. You do need a record of each travel day: the date, where you were, and whether you were away from your tax home overnight.

The critical advantage for DOT-subject drivers is the deduction percentage. Under IRC 274(n)(3), workers subject to the Department of Transportation’s hours-of-service regulations can deduct 80% of meal expenses, not the 50% that applies to everyone else. Owner-operators who hold a CDL and operate under DOT hours-of-service rules qualify automatically. That means a $69 daily per diem produces a $55.20 deduction per day, not the $34.50 a non-DOT worker would get.

Partial days count, but at a reduced rate. The IRS allows 75% of the applicable per diem rate for the first and last day of each trip. If you leave your home terminal on Monday morning and return Thursday evening, you claim 75% for Monday, full rate for Tuesday and Wednesday, and 75% for Thursday.

Should I use actual expenses or the standard mileage rate?

For owner-operators who own the truck, actual expenses almost always win. The standard mileage rate ($0.70 per mile for 2025) is a simplified method that bundles fuel, depreciation, insurance, repairs, and other vehicle operating costs into a single per-mile figure. It works well for salespeople driving sedans. It rarely works for someone operating a Class 8 tractor that cost $150,000, burns $70,000 in diesel a year, and needs $15,000 in annual maintenance.

The reason is straightforward: the standard mileage rate does not allow you to separately claim depreciation, lease payments, or the actual cost of fuel, insurance, and repairs. When you use actual expenses, you deduct each of those individually, and the total almost always exceeds what the standard rate would produce. A truck running 120,000 miles a year at $0.70 per mile produces an $84,000 deduction. The same truck’s actual expenses (fuel, depreciation, insurance, repairs, tires, interest, permits) will typically total $110,000 to $140,000 or more.

There’s a lock-in rule to know about. Under IRC 168(h) and Rev. Proc. 2019-46, if you use actual expenses (including depreciation) in the first year you place a vehicle in service, you cannot switch to the standard mileage rate for that vehicle in any later year. You can go from standard mileage to actual expenses, but not the other way. For an owner-operator buying a truck, this is rarely an issue because actual expenses are the obvious choice from day one, but it’s a trap for drivers who start with a personal vehicle and later convert it to business use.

If you lease a truck instead of owning it, you can use either the standard mileage rate or actual expenses (including lease payments). But again, for most lease-operators, actual expenses produce a larger deduction because the lease payment, fuel, insurance, and maintenance together exceed the per-mile amount.

How do I deduct fuel costs?

Fuel is typically the largest single expense for an owner-operator, running 30% to 40% of gross revenue. It’s deductible in full as an ordinary business expense on Schedule C, and the IRS has no special rules or caps for fuel. You deduct whatever you actually spent.

The record-keeping requirement is what matters. You need receipts, fuel card statements, or an equivalent record showing the date, location, amount, and gallons for each purchase. Most owner-operators use a fuel card (Comdata, EFS, TCS), which produces a monthly statement that serves as a receipt log. If you pay cash at the pump, keep the receipt.

IFTA (International Fuel Tax Agreement) reporting is a separate compliance obligation from your income tax return, but it supports your fuel deduction. Your quarterly IFTA return shows fuel purchased and fuel consumed by jurisdiction. If the IRS questions your fuel deduction, your IFTA filings provide independent corroboration of how much fuel you bought and how many miles you drove. Keeping your IFTA records clean does double duty.

Fuel purchased for reefer units (refrigerated trailers) is also deductible. If you run temperature-controlled freight and fuel the reefer separately, that cost is a business expense on its own line. Some owner-operators blend it with truck fuel, which is fine for tax purposes, but separating it helps with cost analysis.

What are the depreciation options for the truck itself?

The truck is a capital asset, and its cost is recovered through depreciation. Owner-operators have three options, and they can combine them.

MACRS (Modified Accelerated Cost Recovery System). Over-the-road tractors are classified as 5-year property under MACRS. Light trucks under 13,000 lbs gross vehicle weight are also 5-year property. Without any accelerated method, a $160,000 tractor would be depreciated over five years using the 200% declining-balance method, producing larger deductions in the early years and smaller ones later. Most owner-operators don’t use straight MACRS alone because the accelerated options below are available.

Section 179 expensing. Under IRC 179, you can elect to deduct up to $1,250,000 (2025 limit, indexed for inflation) of qualifying property placed in service during the year. The truck qualifies. The deduction cannot exceed your taxable income from active trades or businesses, which means Section 179 cannot create a loss. If your Schedule C shows $80,000 of income before depreciation and you bought a $160,000 truck, Section 179 is capped at $80,000. The remaining $80,000 can be deducted through bonus depreciation.

100% bonus depreciation. Under IRC 168(k), made permanent at 100% by the One Big Beautiful Bill Act (signed July 4, 2025) for property acquired after January 19, 2025, you can deduct the full cost of a qualifying truck in the year it’s placed in service. There’s no dollar cap and no taxable income limitation. Bonus depreciation can create or increase a net operating loss, which Section 179 cannot. Used trucks qualify as long as they’re new to you (you haven’t previously used that specific vehicle).

The ordering rule: Section 179 is elected first, then bonus depreciation applies to the remaining cost. In practice, for most owner-operators, bonus depreciation alone handles the full cost and Section 179 is unnecessary. But Section 179 matters for state returns in states that don’t conform to federal bonus depreciation, and it can matter for S-corp basis calculations.

The interest on the truck loan is a separate deduction. It’s not part of the truck’s depreciable cost. You deduct interest as it accrues, reported on Schedule C as a business interest expense. The interest is fully deductible regardless of which depreciation method you use for the truck itself.

Which insurance premiums are deductible?

Every insurance premium you pay to operate legally and protect the business is deductible on Schedule C. The common policies for owner-operators:

• Primary liability (the FMCSA requires $750,000 minimum for general freight, $1,000,000 for hazmat)
• Cargo insurance (covers the freight you’re hauling)
• Physical damage (comprehensive and collision on the truck itself)
• Bobtail/deadhead coverage (covers the tractor when it’s not under dispatch)
• Occupational accident insurance (covers the driver, since owner-operators aren’t covered by workers’ comp)
• Non-trucking liability (coverage during personal use of the truck)
• General liability and umbrella policies

Health insurance premiums are deductible differently. If you’re self-employed and not eligible for employer-sponsored coverage through a spouse, you can deduct 100% of health insurance premiums (medical, dental, vision) for yourself, your spouse, and your dependents. This deduction is taken on Schedule 1 (line 17), not on Schedule C, and it reduces your income tax but not your self-employment tax. It’s still a significant deduction, often $8,000 to $20,000 per year for a family.

What about repairs, maintenance, and other operating costs?

Repairs and maintenance that keep the truck in its present condition are deductible as current expenses. This covers tires, oil changes, brake jobs, electrical repairs, transmission work, DOT inspection costs, and preventive maintenance programs. The principle under IRC 162 is that an expense maintaining an asset in its existing condition is a current deduction, while an expense that adds to the asset’s value, adapts it to a new use, or extends its useful life beyond its original condition is a capital improvement that must be depreciated.

The line between a repair and an improvement isn’t always clean. Replacing a blown engine with the same type of engine is a repair. Upgrading to a more powerful engine that the truck wasn’t originally equipped with is an improvement. A new set of tires is a repair. A full APU (auxiliary power unit) installation is likely an improvement. When in doubt, the IRS looks at whether the expenditure restored the truck to its original condition (repair) or bettered, adapted, or restored it beyond that baseline (improvement). Under the de minimis safe harbor in Reg 1.263(a)-1(f), items costing $2,500 or less per invoice can be expensed regardless of whether they’d otherwise be capitalized.

Beyond repairs, owner-operators have a long list of deductible operating costs:

• CB radio and communication equipment
• GPS units and ELD (electronic logging device) subscriptions
• Lumper fees (unloading charges at delivery)
• Scale fees and weigh station costs
• Parking fees and truck stop costs
• Tolls (highway, bridge, tunnel)
• Truck washes (the truck is a rolling billboard for your business)
• Permits and licenses: USDOT number, MC authority, state operating permits, oversize/overweight permits, HazMat endorsement fees
• Drug and alcohol testing (DOT-required)
• CDL renewal and DOT medical exam (the physical exam required to maintain your medical certificate)
• Safety equipment: fire extinguisher, reflective triangles, chains, straps, load securement gear
• Load board subscriptions and broker fees (DAT, Truckstop.com, etc.)
• Cell phone (business-use percentage; if you use the same phone for business and personal calls, deduct the business share)
• Dispatching and bookkeeping software
• Association dues (OOIDA, state trucking associations)
• Meals on the road that don’t qualify for per diem (infrequent, but if you’re local and not overnight, the per diem method doesn’t apply)

Each of these is an ordinary and necessary business expense under IRC 162, deductible in the year paid for cash-basis taxpayers. Keep receipts or statements for every one.

Can I deduct a home office as an owner-operator?

Yes, if you meet the requirements. Under IRC 280A(c)(1), the home office deduction requires that you use a specific area of your home regularly and exclusively for business. For an owner-operator, that means a space you use for dispatching, trip planning, load booking, record-keeping, bookkeeping, and administrative work. The space can’t double as a guest room or a family room. It has to be dedicated to the business.

You have two methods. The simplified method allows $5 per square foot, up to 300 square feet, for a maximum deduction of $1,500. No allocation of actual home expenses required. The regular method allocates a percentage of your actual home costs (mortgage interest or rent, utilities, insurance, property taxes, repairs, depreciation) based on the square footage of the office relative to the total home. If your office is 200 square feet in a 2,000 square-foot home, you deduct 10% of qualifying home expenses.

For most owner-operators, the regular method produces a larger deduction than the simplified method, but the simplified method eliminates the record-keeping burden. Either way, the deduction is reported on Form 8829 (regular method) or directly on Schedule C (simplified method).

The home office deduction also establishes your home as a “second business location,” which matters for the commuting rule. Without a home office, the IRS can argue that your daily drive from home to the terminal is a non-deductible commute. With a qualifying home office, the drive from home to the terminal is between two business locations and is deductible.

How does self-employment tax hit owner-operators?

Self-employment tax is the part that surprises most new owner-operators. As a sole proprietor, you pay both the employer and employee shares of FICA: 12.4% for Social Security on net earnings up to $168,600 (2024, indexed annually) and 2.9% for Medicare on all net earnings, for a combined 15.3% on the first $168,600 and 2.9% above that. There’s an additional 0.9% Medicare surtax on net self-employment earnings above $200,000 ($250,000 for married filing jointly) under IRC 1401(b)(2).

You do get a partial offset: you deduct one-half of the self-employment tax as an adjustment to income on Schedule 1 (line 15), and you compute SE tax on 92.35% of net earnings (not 100%). But even after those adjustments, the effective SE tax rate on the first $168,600 is roughly 14.1%.

The S-corp election is the standard strategy for reducing self-employment tax. If the owner-operator forms an LLC, elects S-corp treatment (Form 2553), and pays themselves a reasonable salary of, say, $50,000, only the salary is subject to FICA. The remaining profit passes through as a distribution, which is not subject to self-employment tax. The savings depend on the profit level: the higher the profit above reasonable compensation, the larger the SE tax savings. The trade-off is the cost of payroll administration, additional tax returns (Form 1120-S), and the risk of the IRS re-characterizing distributions as wages if the salary is set too low. For owner-operators with consistent net profits above $60,000 to $70,000, the math usually favors the S-corp election.

What records does the IRS expect me to keep?

The IRS expects contemporaneous records, meaning records created at or near the time of the expense, not reconstructed at tax time. For owner-operators, the core record set includes:

• Mileage logs. Total miles driven for the year, broken down by business and personal. ELD data satisfies this for most over-the-road operators because the device records every mile. If you drive the truck for personal use (some owner-operators do), you need to separate those miles. A trip sheet or dispatch log that shows origin, destination, and miles for each load is the standard format.
• Fuel receipts or fuel card statements. Date, location, amount, and gallons for each purchase. Fuel card statements are the easiest documentation. If you pay cash, keep the receipt.
• Per diem records. For each day you claim per diem, you need the date and the city (or general location). You don’t need meal receipts if you’re using the per diem rate, but you do need a log of travel days. Many truckers use an app or a simple spreadsheet: date, city, whether it was a full day or a partial day. ELD records corroborate your location.
• Maintenance and repair records. Invoices or receipts for every repair, tire purchase, oil change, and maintenance service. The shop receipt should show the date, what was done, and the cost. If you do your own maintenance, keep receipts for parts and note the labor.
• Truck purchase documents. The purchase agreement, financing documents, and the date the truck was placed in service. These support the depreciation deduction.
• Insurance policies. Annual premium statements or invoices for each policy.
• Trip sheets or bills of lading. These document the loads you hauled, the revenue earned, and the miles driven. Your dispatcher or load board provides settlement statements that serve as income documentation.
• Bank and credit card statements. These corroborate individual expense receipts and provide a backup if a specific receipt is lost.

Without records, the IRS disallows deductions under the Cohan rule’s limitations: if you can prove an expense occurred but can’t document the exact amount, the court can estimate a reasonable amount, but it won’t estimate generously, and per diem has no Cohan flexibility at all (you either have the travel log or you don’t). Trucking is a frequent audit target because the expenses are large, the record-keeping is often poor, and the per diem deduction is easy to inflate. Good records aren’t just a tax-preparation convenience. They’re audit insurance.

What should I do next?

If you’re an owner-operator, the first step is making sure your return captures every deduction you’re entitled to. Per diem alone is worth reviewing: if you’re not claiming it, or if your preparer is applying the 50% rate instead of the 80% DOT rate, you’re overpaying. Beyond that, the depreciation method on the truck, the entity structure (sole prop vs S-corp), and the completeness of your expense records all affect the bottom line.

These guides cover the related topics in detail:

• Section 179 and bonus depreciation, the full breakdown of accelerated depreciation for your truck and equipment
• Entity structure, S-corp election, and the QBI deduction, how the S-corp election reduces self-employment tax and how the 20% QBI deduction works for pass-through businesses
• Trust fund recovery penalty, the personal liability exposure if you have employees and payroll taxes go unpaid
• IRS installment agreements, the payment plan options when a tax balance builds up
• Accuracy-related penalty and reasonable cause defense, how to defend deduction-related penalties if the IRS challenges your return
• Truck depreciation: Section 179, bonus, and MACRS, the full depreciation breakdown for Class 8 tractors, trailers, and attached equipment
• Trucking bookkeeping for owner-operators, the record-keeping system that supports every deduction on this list

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.