For state employees, under Statute §9-3-103 the current mileage reimbursement rate is $0.70 per mile when personal vehicles are used because government vehicles aren't available. However, this rate decreases to $0.47 per mile when employees choose personal vehicles for convenience rather than necessity.

Except in workers' compensation situations, private sector employers have flexibility in setting their own rates. The IRS standard business mileage rate for 2025 stands at $0.70 per mile, providing a federal benchmark that Wyoming businesses can follow for simplicity in accounting and tax documentation. Any amount above $0.70 per mile becomes taxable income for employees.

The table below shows Wyoming mileage reimbursement rates for recent years, aligned with IRS standards:

Note: Private organizations have flexibility to reimburse employees at rates that differ from the IRS standard. However, any reimbursement exceeding the IRS rate will be classified as taxable income to the employee.

To calculate applicable mileage reimbursement for Wyoming, do the following:

1. Select the appropriate tax year for your calculation period
2. Enter the total miles driven to compute eligible reimbursement amounts

The calculator below provides precise reimbursement figures based on current rates and specified mileage inputs.

Wyoming businesses aren’t required to reimburse their employees for business-related travel using a personal vehicle, but there are two instances where mileage reimbursement can be necessary: workers’ compensation cases and to keep wages above the minimum wage requirement.

Under the Wyoming Workers' Compensation Act (Statute §27-14-401), businesses must reimburse injured workers for mileage when they travel more than 10 miles one way to reach medical care.

Minimum wage is the other requirement businesses need to be aware of. Wyoming’s minimum wage aligns with the federal rate of $7.25 per hour, and the Fair Labor Standards Act (FLSA) requires that work-related expenses like unreimbursed mileage don't effectively reduce employee earnings below this threshold. Penalties and other fees can result from wages falling below the required minimum.

Creating a mileage reimbursement policy tailored to Wyoming's terrain requires thoughtful consideration. Consider these Wyoming-specific best practices:

Account for seasonal driving conditions

Wyoming's harsh winters and variable road conditions can impact travel time and vehicle wear. Consider seasonal adjustments to reimbursement policies that acknowledge the additional challenges of winter driving across mountain passes and high plains.

Differentiate between types of terrain

Business travel in Wyoming often involves various road conditions — from highways to unpaved county roads. Companies can implement tiered reimbursement rates that acknowledge the different impacts these road types have on vehicles.

Establish clear boundaries for reimbursable travel

Wyoming's rural character means employees may travel substantial distances between work locations. Clearly define what constitutes reimbursable business travel versus regular commuting, particularly for employees who work across multiple sites or regions within the state.

Establish consistent documentation requirements

Regardless of location, implement standardized procedures for submitting mileage claims. Require essential details such as date, starting point, destination, purpose of travel, and total miles for each trip. Consistent documentation simplifies approval processes and strengthens audit preparedness.

Create efficient approval workflows

Design streamlined approval processes that balance oversight with efficiency. Expense management software can automate the approval system so route requests go to appropriate managers while flagging unusual patterns. This can reduce administrative burdens while maintaining financial controls.

Audit regularly for compliance

Implement periodic reviews of employee mileage reimbursement claims to verify accuracy and policy compliance. Regular audits can help identify potential issues and can keep a policy in compliance as rules and regulations are updated.

For many businesses, fair travel compensation represents more than regulatory compliance — it's a strategic advantage in workforce management across Wyoming’s expansive geography.

Brex's expense management platform offers Wyoming businesses a powerful solution for streamlining mileage tracking and reimbursement. Brex automates documentation, approval workflows, and expense policies, eliminating administrative burdens and errors introduced by manual inputs. Through integration with existing accounting software, Brex creates a seamless experience that streamlines tax preparation and financial documentation.

For Wyoming businesses looking to optimize their approach to travel expenses while supporting workforce satisfaction, Brex delivers a unified platform that addresses the unique challenges of operating in America's least populous state. Sign up for Brex today to transform how your Wyoming business handles mileage reimbursement and expense management.