What expense category is Mileage Reimbursement Expenses?

Many businesses rely on employees using their personal vehicles for work-related travel, such as visiting clients, attending off-site meetings, or running company errands. To compensate for these costs, employers often provide mileage reimbursements. For accountants and Small to Medium-sized Business (SMB) owners, understanding how to properly categorize, manage, and report these mileage reimbursement expenses is crucial for compliance, accurate bookkeeping, and managing tax implications for both the business and its employees.

This guide will explore the mileage reimbursement expenses category, highlight key considerations for managing these reimbursements (especially under an IRS accountable plan), provide common examples, detail the tax implications, and discuss how Sage Expense Management can automate and streamline the entire mileage reimbursement tracking process.

Mileage Reimbursement Expenses Category

Mileage reimbursement expenses refer to the amounts a business pays to its employees (or sometimes volunteers or other non-employees providing services) to cover the costs incurred from using their personal vehicles for official business purposes. These are generally considered operating expenses for the employer.

In an accounting system, these expenses are typically classified under categories such as:

• Employee Reimbursement Expenses - Mileage
• Travel Expenses - Mileage
• Auto Expenses - Mileage Reimbursement
• Vehicle Operating Expenses

If reimbursements are made under a non-accountable plan, they are treated as wages and would be part of salaries and wages or compensation expense.

Some Important Considerations When Managing Mileage Reimbursement Expenses

The IRS has specific rules for how mileage reimbursements are treated, primarily hinging on whether they are part of an accountable plan.

Accountable Plan Requirements

To ensure mileage reimbursements are non-taxable to employees and properly deductible as a business expense (not as wages) by the employer, the reimbursement arrangement must qualify as an accountable plan. An accountable plan must meet all three of the following conditions:

• Business Connection: The expenses must have a clear business connection and be ordinary and necessary business expenses.
• Substantiation: Employees must adequately account to the employer for these expenses within a reasonable period. For mileage, this typically means providing a detailed mileage log (date, destination, business purpose, miles driven).
• Return of Excess Reimbursement: Employees must be required to return any amount paid in excess of the substantiated business expenses within a reasonable period.

Non-Accountable Plans

If any of the accountable plan conditions are not met, the reimbursement arrangement is treated as a non-accountable plan. All amounts paid under a non-accountable plan are included in the employee's gross income, reported as wages on Form W-2, and are subject to income tax withholding and employment taxes (Social Security, Medicare, FUTA). The employer still deducts these amounts, but as compensation.

Reimbursement Rates

• IRS Standard Mileage Rate: Employers often use the IRS standard mileage rate for business use of a car as a basis for reimbursement. For 2024, this rate is 67 cents per mile. Reimbursing at or below this rate under an accountable plan generally means the reimbursement is not taxable to the employee, as it's considered substantiated for the amount.
• Rates Other Than Standard: If an employer reimburses at a rate higher than the current IRS standard business rate, the excess amount over the federal rate is generally treated as taxable wages to the employee, even if under an accountable plan, unless the employer can substantiate that the higher rate reflects the employee's actual ordinary and necessary expenses.
• Fixed Allowances (e.g., Monthly Car Allowance): If an employer provides a fixed car allowance and does not require employees to substantiate their actual business mileage and return any excess, the entire allowance is typically treated as paid under a non-accountable plan and is taxable compensation.

Substantiation Requirements for Employees (for Accountable Plans)

To receive non-taxable reimbursement, employees must provide their employer with records that include:

• The date of each business trip.
• The mileage driven for each business trip (e.g., start and end odometer readings, or miles logged).
• The destination or area of travel.
• The specific business purpose of the trip.

Commuting Miles Not Reimbursable as a Non-Taxable Business Expense

Mileage for an employee's regular commute between their home and their main or regular place of work is a personal expense and cannot be reimbursed tax-free under an accountable plan.

Importance of a Written Company Policy

Establishing a clear, written mileage reimbursement policy that outlines the requirements for substantiation, eligible travel, reimbursement rates, and timely submission helps ensure compliance and clarity for employees.

Examples of Mileage Reimbursement Scenarios

Common situations where mileage reimbursement is appropriate under an accountable plan:

• An employee driving their personal vehicle to visit a client's office for a sales meeting.
• An employee traveling between different company branches or work sites during the workday.
• An employee driving to a temporary work location (e.g., a project site) that is not their regular place of work.
• An employee using their personal car to run essential business errands, such as going to the post office for company mailings, picking up business supplies, or making bank deposits.
• An employee driving to attend an off-site training session or conference.

For each of these, the employee would need to submit a mileage log detailing the business purpose and miles driven to qualify for non-taxable reimbursement.

Tax Implications of Mileage Reimbursement Expenses

For the Employer

• Accountable Plan: Amounts reimbursed to employees for substantiated business mileage are deductible by the employer as ordinary and necessary business expenses (e.g., travel or auto expenses). These amounts are not subject to employer-paid payroll taxes.
• Non-Accountable Plan: Amounts paid to employees are treated as wages. The employer deducts these as compensation expense and must also pay their share of payroll taxes (Social Security, Medicare, FUTA) on these amounts.

For the Employee

• Accountable Plan: Reimbursements received for substantiated business mileage, up to the federal standard mileage rate, are generally not included in the employee's gross income, are not reported as wages on their Form W-2, and are not subject to income tax withholding or employee-paid payroll taxes.
• Non-Accountable Plan: All reimbursement amounts are included in the employee's gross income, reported as wages on Form W-2, and are subject to income tax withholding and employee payroll taxes. The employee can potentially deduct their actual business expenses as an itemized deduction on Schedule A (Form 1040) if they are in certain eligible professions (e.g., Armed Forces reservists, qualified performing artists, fee-basis state or local government officials), subject to limitations; however, for most employees, miscellaneous itemized deductions subject to the 2% AGI floor are suspended from 2018 to 2025.

Record keeping for the Employer

The employer must retain employee expense reports, mileage logs, proof of reimbursement, and documentation of their accountable plan policy to substantiate their deductions and the non-taxable treatment of reimbursements to employees.

How Sage Expense Management (formerly Fyle) Can Automate Mileage Reimbursement Tracking

Manually tracking mileage, calculating reimbursements, enforcing policies, and managing approvals can be a cumbersome and error-prone process. Sage Expense Management is well-equipped to automate and streamline mileage reimbursement by:

Easy Mileage Log Submission

Employees can submit their claims conveniently through the mobile or web application. They can enter trip details such as date, start/end locations, odometer readings, business purpose, and total miles driven. We may also integrate with GPS mileage tracking apps for even greater accuracy and ease.

Automated Reimbursement Calculation

Based on the business miles submitted and the company's pre-set reimbursement rate (e.g., the current IRS standard mileage rate), we can automatically calculate the total reimbursement amount due to the employee.

Attachment of Supporting Documentation

Employees can easily attach any supporting documentation, such as receipts for related tolls and parking fees (which are often reimbursable in addition to mileage under the standard rate method), directly to their mileage expense reports within Sage Expense Management.

Robust Policy Enforcement

Companies can configure their specific mileage reimbursement policies within Sage Expense Management. This can include:

• Setting maximum reimbursable distances for certain types of trips.
• Requiring specific fields for trip justification (e.g., client name, project code).
• Flagging claims that violate policy or appear duplicative.
• Ensuring timely submission as per the accountable plan rules.

Streamlined Approval Workflows

Mileage reimbursement requests can be automatically routed to designated managers or departments for review and approval. Approvers can act on these requests directly from their email, Slack, or the mobile app.

Direct Deposit Reimbursement Integration

We often integrate with accounting systems and may facilitate or integrate with payment systems to enable direct deposit of approved reimbursements to employees’ bank accounts, speeding up the payment process.

Seamless Accounting Integration

We offer deep, two-way integrations with leading accounting software like QuickBooks (Online & Desktop), Xero, NetSuite, and Sage Intacct. This ensures that approved and categorized mileage reimbursement expenses are accurately and automatically exported to the general ledger.

Comprehensive Audit Trail and Reporting

We maintain a complete digital audit trail for every mileage claim, from submission through approval and reimbursement. It also provides detailed reports on mileage spending by employee, department, project, or period, aiding in budget control and analysis.

By leveraging Sage Expense Management for mileage reimbursements, businesses can significantly reduce administrative effort, improve accuracy, ensure compliance with accountable plan rules and company policies, and provide a better experience for their employees.