Taxes for Truck Drivers — Per Diem, Owner-Operator Write-Offs, and Quarterlies
Two drivers run the same lanes and pay wildly different tax bills. The difference is rarely income — it's structure, records, and knowing which rules apply to a W-2 and which to a 1099.
For owner-operators, the truck is a rolling ledger of deductions: fuel, tires, repairs, insurance, depreciation, tolls, scales, per diem for nights away. Every untracked expense is tax paid on money you didn't keep.
For company drivers, the rules changed years back — and knowing what no longer counts matters as much as knowing what does.
Your reality
The parts of this topic that hit your trade differently — and that generic advice skips.
W-2 and 1099 live under different rules
Company drivers generally can't deduct unreimbursed road expenses — including per diem — on federal returns under current law. Owner-operators and lease drivers filing Schedule C still can. Same road, different rulebooks.
The deductions ride with the truck
Fuel, maintenance, tires, insurance, interest on the truck loan, depreciation, permits, tolls, scales, the business share of your phone — plus per diem for nights away from home. For an owner-operator, these are the difference between a real profit number and an inflated tax bill.
No one withholds for you
Owner-operator settlements arrive gross. Income tax and 15.3% self-employment tax are your job to set aside, and the IRS expects quarterly payments through the year — not one scramble in April.
First moves
Three concrete steps, in order. Each one is a brick laid.
Run the business through its own account
Every settlement in, every truck expense out of one business account. Clean books turn tax season into a download and make your real cost-per-mile visible all year.
Log nights away and every receipt
Per diem is claimed by the day, so your logbook or ELD record is tax evidence. Pair it with a receipt habit — an envelope or an app — and the write-offs stop leaking.
Set aside a share of every settlement for taxes
Move a fixed percentage into a tax-only account each settlement and pay quarterlies from it. Many owner-operators land in the quarter-to-a-third range; your accountant can dial the number to your situation.
Frequently asked questions
Can company drivers still claim per diem?
Not as a federal deduction under current law — the old unreimbursed-expense deduction for W-2 employees is off the table. Some carriers offer per diem pay programs that shift part of pay to untaxed reimbursement instead; those have trade-offs for loans and Social Security credits worth understanding first.
What can an owner-operator write off?
Fuel, maintenance and repairs, tires, insurance, interest on the truck loan, depreciation, permits and plates, tolls and scales, the business share of the phone, and per diem for nights away from your tax home. The list is long — which is exactly why clean records pay.
How do quarterly estimates work?
If you'll owe $1,000 or more for the year, the IRS wants four payments across the year. Base them on last year's tax or this year's running profit. A tax set-aside account funded every settlement makes each payment a transfer instead of a crisis.
See where your foundation stands — and what to build next.
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