Do reimbursements get taxed? A construction finance guide

Fair reimbursement policies protect a field crew’s take-home pay. This ensures workers don’t lose hard-earned wages to everyday job costs like fuel, tools, and materials. However, identifying which of these payments are taxable and which are tax-free can be challenging. IRS compliance rules change drastically depending on whether a company requires receipts for reimbursements or pays out flat allowances. Additionally, the maximum tax-free reimbursement limits vary by jobsite location.

This guide explains which reimbursements get taxed. Finance leaders will learn how accountable versus non-accountable reimbursement plans affect taxability, which common field expenses qualify for tax-free status, and what converts otherwise non-taxable expenses into taxable ones.

What are employee expense reimbursements?

Employee expense reimbursements are payments employers make to cover necessary work-related costs an employee has paid for out of pocket. Common reimbursable expenses include:

• Travel expenses, such as mileage and lodging
• Tools and equipment
• Per diems
• Cell phones

Employee reimbursements aren’t compensation for work performed, so they don’t count as wages. However, that doesn’t mean they’re tax-free by default, either. Whether these payments are taxable depends on how the employer structures their reimbursement plan.

Are expense reimbursements taxable in construction?

Taxability depends on how an employer handles incurred expenses, not the specific item purchased. Business expenses reimbursed through an IRS-compliant accountable plan are tax-free, while costs reimbursed through a non-accountable plan are taxable as regular wages.

Because the construction industry relies heavily on independent contractors, finance leaders might wonder if reimbursements are taxable on a 1099 for self-employed workers. Independent contractors are treated differently: reimbursements are usually included in 1099 pay and the contractor deducts the expense, unless you reimburse under a substantiated arrangement that keeps them off the 1099.

Here’s how each type of reimbursement plan works.

Accountable plan reimbursements

The IRS considers a reimbursement plan accountable if it satisfies these central criteria:

• Business connection: The reimbursable expense must be ordinary and necessary for business purposes.
• Substantiation: The employee must document the expense within 60 days of purchase, attaching a valid form of proof like a receipt or mileage log.
• Return of excess: Employees must return any excess advance funds or overpayments to the employer within 120 days.

Failing to meet any of these individual requirements strips away the tax-free status of that specific reimbursement. If a construction firm repeatedly ignores these rules, the IRS reclassifies the entire program as a non-accountable plan, converting all employee expense reimbursements into taxable wages.

Non-accountable plan reimbursements

The IRS treats reimbursements through a non-accountable plan as regular wages. Employers must include these amounts in an employee’s gross W-2 income and subject them to standard payroll taxes, such as federal income tax withholding, Social Security, Medicare, and unemployment taxes.

Operating outside of accountable plan criteria is a frequent occurrence in construction. Giving flat monthly tool allowances without receipts, or paying mileage stipends above the standard IRS rate, automatically makes a plan non-accountable. 

This classification matters because misreporting these expenses has tangible consequences. Apart from the time and resources required to correct invalid W-2s, classifying a non-accountable reimbursement as accountable creates payroll tax liability, leaving the company on the hook for its unpaid share of FICA (Social Security and Medicare) and FUTA (federal unemployment) taxes on every misclassified dollar. It also increases audit risk since inconsistencies between reported wages and actual compensation are a potential IRS audit flag.

Conversely, treating tax-free reimbursements as taxable harms both the worker and the business. It unnecessarily reduces employees’ take-home pay and distorts job costing data by inflating perceived labor costs on the balance sheet.

Everyday construction reimbursements and how they’re taxed

Here are a few types of reimbursements construction businesses encounter on a daily basis and what rules affect their taxability.

Mileage and vehicle expenses

For 2026, the IRS standard mileage rate sits at 72.5 cents per mile. If an employer pays a rate above this threshold, the IRS taxes the excess amount as regular wages.

Regular commuting never qualifies for tax-free status. The IRS classifies daily travel between an employee’s home and their regular jobsite as a personal expense that isn’t reimbursable. However, finance leaders can authorize tax-free reimbursements for travel between multiple jobsites, trips from home to a temporary jobsite lasting one year or less, and supply runs. 

Tools and equipment costs

While most contractors supply major equipment like heavy machinery, businesses frequently reimburse field workers for smaller items. These common costs can include hand tools, personal protective equipment, and replacements for personal tools damaged on the jobsite.

W-2 employees used to be able to deduct these out-of-pocket tool purchases on their personal tax returns, but that hasn’t been an option since 2018 due to the Tax Cuts and Jobs Act (TCJA). Because the cost now falls entirely on the worker, construction firms must implement compliant account reimbursement plans to cover these upfront expenses.

Meals and per diem

Is a per diem taxable? It depends. Per diem and meal allowances are tax-free when they fall within GSA and IRS daily rate standards for the region. While both types of expenses qualify for tax-free status, the taxability rules aren’t the same. A true per diem provides a flat daily allowance to cover lodging, meals, and incidentals. This differs from a meal-only reimbursement, which an employer pays out directly toward the cost of an actual meal based on receipts.

Meal-only reimbursements are tax-free when the payment covers the cost of a specific meal taken while traveling away from the employee’s home tax jurisdiction and the employer pays it through an accountable plan based on actual receipts. Per diems are tax-free when the amount is at or below the federal per diem rate and the employee documents the time, place, and business purpose of the trip within a reasonable period of time, such as 60 days.

As of 2026, the standard baseline per diem rate is $178 for most of the U.S., while the standard meal and incidental expenses rate is $68. Both numbers can scale up significantly in areas with a high cost of living. 

The IRS requires strict compliance to keep these allowances tax-free. Employers must treat any amount paid out above these standard federal rates as taxable wages. Furthermore, the entire per diem allowance becomes taxable if the employee fails to provide proper documentation.

Because per diem and meal rates can vary by location, some contractors with teams that spend a lot of time on the road use the high-low method to simplify per diem tracking across jobsite locations. This technique replaces manually looking up and configuring rates for each area with just two simple numbers set by the IRS: a rate for high-cost areas, and a rate for everywhere else. For 2026, the high-cost per diem rate is $319 a day, and the meal-only rate is $86 a day. For low-cost areas, the per diem rate is $225, while the meal-only rate is $74. Using this method, payroll teams only need to check whether a jobsite sits within a designated high-cost city to apply the correct tax-free allowance.

Cell phone and internet

Employers handle business cell phone provision using two main approaches. First, employers provide phones directly to workers for business purposes. The IRS treats this arrangement as a non-taxable working condition fringe benefit, even if the employee uses the phone for personal reasons sometimes.

With the second approach, employers reimburse workers for a personal phone purchase. The IRS allows tax-free status for these payments only when the reimbursement amount matches the actual business use cost, and the employee substantiates that cost with receipts. As usual, employers must issue these payments through a compliant accountable plan. For example, many contractors pay field crews a flat monthly phone stipend without requiring supporting documentation; however, the IRS taxes these flat stipends as regular wages due to the lack of substantiation.

Manage construction reimbursements the smart way with Miter.

So, are reimbursements taxable income? The short answer is, “It depends.” But knowing the rules is just the beginning. The real challenge involves developing a system that follows those IRS guidelines to the letter, regardless of how many field workers, jobsites, and disparate expenses the business juggles all at once.

Miter Reimbursements closes that gap. When a field crew member sends in a request, the software captures receipts and mileage logs at submission, so the finance team gets proof of purchase immediately. Finance leaders set per diem and mileage rates, with GSA per diem amounts pulled automatically by jobsite location, and mark each rate taxable or non-taxable so payroll applies the right treatment.

Miter handles the documentation side, too. Configurable approval workflows leave a clear paper trail, ensuring audit-readiness around the clock. By automating compliance at every step, finance leaders can eliminate tax season guesswork and protect their company’s bottom line.