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At first, mileage reimbursement may seem tricky. That’s because reimbursing employees for business miles driven in a personal vehicle involves knowing the current IRS mileage reimbursement rates, associated tax rules, and how to keep track of business expenses to stay compliant.

Once you understand how the mileage reimbursement process works, though, it’s pretty straightforward. In this guide, we’ll explain the ins and outs of mileage reimbursement for business travel, from how to calculate it to the tax implications for your business.

How mileage reimbursement works

Mileage reimbursement refers to the process of compensating employees for the costs they incur when they use their personal vehicles for business travel. Because business mileage is typically tax-deductible, the Internal Revenue Service (IRS) has specific mileage log requirements for how to track and report business mileage.

Each year, the IRS publishes a standard mileage rate as a benchmark for what you can write off as a business expense on your tax return. The IRS mileage rate for 2024 is 67 cents per mile, which is up 1.5 cents from the 2023 rate of 65.5 cents per mile​.

But when it comes to mileage reimbursement, the standard deduction is merely a guideline. As an employer, you can choose to reimburse more or less per mile. Amounts reimbursed above the limit are considered taxable income; amounts below the limit risk dropping employee pay below the federal minimum wage, which violates the Fair Labor Standards Act (FLSA).

On top of that, the legal requirements for mileage reimbursement vary by state. California, Illinois, and Massachusetts, for example, have laws mandating mileage reimbursement. Other states follow the federal guidelines set by the IRS, which don’t mandate reimbursement but provide a standard mileage deduction that employers can use as a guideline.

How to calculate mileage reimbursement

To calculate a mileage reimbursement, multiply the number of miles driven by the current mileage rate set either by the state or the IRS, whichever applies. Here’s a simple formula to calculate mileage reimbursement:

Business miles driven * Mileage rate = Reimbursement amount

As an example, suppose you drove 100 miles for business, and your company reimburses mileage at the standard mileage rate. To calculate your reimbursement, you’d multiply the total miles driven (100) by the IRS standard mileage rate for 2024 (67 cents per mile) to determine your total reimbursement:

100 miles * $0.67 per mile = $67.00 reimbursement

Estimate your reimbursement with Ramp’s mileage rate calculator

When to reimburse employees for mileage

Any time an employee or contractor uses their own vehicle for business use, it qualifies for mileage reimbursement. This includes traveling to client meetings, attending events, or completing work-related tasks. However, not all business mileage is reimbursable—notably, mileage related to regular commuting is not reimbursable.

Many businesses choose to reimburse employees for their travel costs on a monthly basis. Depending on the number of employees you have and how frequently they travel, you could also reimburse them quarterly or even after each individual trip.

But remember: The amount you reimburse your employees shouldn’t surpass the IRS standard mileage rate for the given tax year. If it does, the excess amount you reimburse employees will be treated as taxable income.

FAQ
What does the standard mileage rate include?
The standard mileage rate approximates all the costs associated with owning and operating a vehicle, including gas, maintenance, repairs, car insurance premiums, and depreciation. However, it doesn't include parking fees or tolls; you'd generally claim these separately as travel expense deductions.

Challenges with mileage reimbursement

While mileage reimbursement is a common item on expense reports, it can introduce challenges to any bookkeeping practice.

One common problem is setting up procedures to log business mileage accurately. This typically means either incurring software expenses to purchase a mileage tracker or devoting extra resources to ensuring you correctly record and report on all business mileage.

The second is over-reimbursing (or under-reimbursing) employees. Because gas prices and maintenance costs vary widely by region, the standard mileage rate doesn’t compensate all employees equally depending on the cost of living in their area.

Mileage rate alternatives: Car allowance vs. FAVR vs. actual expenses method

Depending on your business travel needs, the standard mileage rate isn’t always the best method to reimburse business mileage. There are several other methods of reimbursing vehicle expenses, including car allowances, FAVR, and the actual expenses method.

Car allowance

Car allowances add a fixed amount to employees’ paychecks to cover car maintenance and fuel prices. However, much like mileage reimbursement, car allowances often underpay some employees while overpaying others.

Unlike mileage reimbursements, which are tax-deductible, car allowances are taxed like payroll expenses. Opt for FAVR or the actual costs method to keep these expenses tax-free.

FAVR

A fixed and variable rate (FAVR) program is a hybrid between car allowances and mileage reimbursement. Employees receive a monthly allowance for fixed costs like insurance and registration, plus a variable-rate reimbursement based on business miles driven.

FAVR programs are popular because they more closely approximate the variable costs and expenses associated with using a vehicle for business purposes. Just like mileage reimbursement, you must log each business trip if you use this method.

Actual expenses

Finally, the IRS allows businesses to itemize and deduct the actual expenses of owning and operating a vehicle. Rather than reimbursing employees with an estimate, actual costs track the total amount spent on a vehicle for business purposes. This eliminates the risk of under- or over-reimbursing employees since the numbers directly reflect the real cost of business travel and vehicle ownership.

Automate business mileage tracking with Ramp

No matter which method you choose to calculate employee mileage reimbursements, it’s important that you have a way to track business mileage accurately.

Ramp’s expense reimbursement software makes it easy to automate mileage tracking, recordkeeping, expense reporting, and more in a single platform:

  • Accurate mileage calculations: Ramp integrates directly with Google Maps so employees can easily track mileage for every business trip—no paper logbook required
  • Easy receipt collection: Employees are prompted to scan and save receipts for travel expenses whenever they submit a reimbursement request
  • Automated expense reimbursement: Manage your entire expense management and reimbursement process in one place

Check out our interactive demo environment and see for yourself why Ramp customers save an average of 5% a year.

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Finance Writer, Ramp
Richard Moy has written extensively about procurement and vendor management topics for companies like BetterCloud, Stack Overflow, and Ramp. His writing has also appeared in The Muse, Business Insider, Fast Company, Mashable, Lifehacker, and more.
Ramp is dedicated to helping businesses of all sizes make informed decisions. We adhere to strict editorial guidelines to ensure that our content meets and maintains our high standards.

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