Road Warrior Tax Basics: Per Diem, Mileage, W-2 vs. 1099
How traveling tradespeople should think about per diem, mileage, and worker classification—using the 2026 federal mileage rate of 72.5 cents per mile.
The first rule: know what kind of money you’re getting
A travel check can contain several different things: taxable wages, per diem, mileage reimbursement, lodging, bonuses, and overtime. They do not all get treated the same way.
Your first job is to separate the buckets on every pay stub and assignment agreement. A $40 hourly rate is not the same as $40 in wages plus a non-taxable travel reimbursement. What matters is how the payment is structured, whether you substantiated the expense, and whether the arrangement follows IRS rules.
For a broader pay comparison, see RoadHand’s national wages guide. If you are tracking what other road hands actually report, use Submit a Pay Report.
Per diem: reimbursement, not automatically free money
Per diem is generally a daily allowance for lodging, meals, and incidental expenses while you are traveling away from your tax home for business. The tax treatment depends on the arrangement.
Under an accountable plan, the employer’s arrangement generally must require a business connection, require you to substantiate the expense within a reasonable period, and require you to return excess amounts. Properly handled reimbursements are generally not wages. The IRS identifies per diem as a fixed daily reimbursement for lodging and meals and incidental expenses while away from home on business. IRS Publication 463
If the company pays a flat amount without requiring substantiation, lets you keep excess amounts, or runs the payment through a nonaccountable arrangement, the amount can be treated as taxable wages. That means withholding may apply, and the payment can show up on your Form W-2.
Do not confuse a company’s travel per diem with the federal GSA rate. GSA rates are used for specific federal travel and reimbursement purposes; they are not a universal tax-free allowance for every private job. For federal work, check the applicable contract and current rate rather than assuming the number.
Keep the assignment location, dates, lodging records, receipts when required, and the company’s written reimbursement policy. If you are working far enough from home to create a legitimate temporary business trip, that matters. A permanent transfer or an indefinite assignment can change the analysis.
Mileage: track business miles, not your whole road life
For 2026, the IRS standard mileage rate for business use is 72.5 cents per mile. IRS Notice 2026-10
That rate is for qualifying business use of a vehicle. It does not turn every mile into a deduction. Your regular commute is generally personal. Travel between job sites during the workday is business mileage. Travel from a temporary work location can require a closer look, especially when the assignment is outside your normal area.
If your employer reimburses mileage under an accountable plan, keep a contemporaneous log showing the date, origin, destination, business purpose, and miles. A phone mileage app is useful, but you still need to identify why the trip was business-related.
If you are a W-2 employee, do not assume you can deduct unreimbursed vehicle costs on your federal return. Employee business-expense deductions are limited, and state rules can differ. Ask the employer whether its policy reimburses mileage and whether the reimbursement follows the IRS rate.
If you are legitimately self-employed, vehicle costs may be deductible as a business expense, but you need records and must choose the applicable accounting method correctly. Do not claim both the standard mileage method and the same vehicle costs again as actual expenses.
W-2 versus 1099: the label does not decide it
A W-2 employee generally has wages reported on Form W-2, with income-tax withholding and Social Security and Medicare taxes handled through payroll. An independent contractor generally receives Form 1099-NEC for nonemployee compensation and is responsible for handling estimated taxes and self-employment tax. IRS: Independent Contractor Defined
But the company cannot make someone a contractor simply by issuing a 1099. The IRS states that worker status depends on the actual relationship, not just the form used or what the parties call the arrangement. IRS Publication 15
A contractor usually controls more of the business side: how the work is performed, which jobs are accepted, what tools and expenses are carried, and whether services are offered to multiple customers. A worker directed day to day by one company, working inside its crew structure, following its schedule and procedures, may have facts pointing toward employee status—even if the paperwork says 1099.
A 1099 check can look bigger because payroll withholding is missing. That is not the same as higher net pay. Set money aside for federal, state, and local taxes, plus self-employment tax where applicable. Price in insurance, unpaid travel time, tools, vehicle costs, downtime, and the benefits a W-2 employer may provide.
The road-hand paperwork that saves you
Keep your contract, pay stubs, per diem policy, mileage logs, receipts, time sheets, and assignment dates together. Photograph documents before leaving a job. Review whether per diem and mileage are separately identified, whether overtime is calculated on the correct wage base, and whether deductions are coming out of your check.
For a city-by-city housing reality check, compare RoadHand housing guides. For local work conditions and pay reports, browse an area guide. If the numbers do not match the agreement, get the discrepancy in writing before the next hitch.
This is field guidance, not individualized tax advice. A tax professional who understands traveling construction workers can evaluate your tax home, temporary assignments, mileage, and worker classification against your actual records.