How to calculate mileage reimbursement

How to calculate mileage reimbursement

Calculating mileage reimbursement may seem like a hassle, yet it's a necessity for both businesses and their traveling employees. Whether you're a seasoned road warrior or new to the concept, grasping the fundamentals will ensure accurate and compliant calculations. When you understand every mile on the road's worth, in essence, it translates to fair compensation for the journey taken.

In this guide, we'll look at how to calculate reimbursement for mileage, how to know which rate to use, and ensure your travels add up to the correct amount for reimbursement.

What is mileage reimbursement?

Mileage reimbursement is a form of compensation provided by employers to employees for the business use of their personal vehicles. It's an essential business practice that benefits both parties: employers maintain a mobile workforce without the need for company-owned vehicles, and employees are compensated for vehicle expenses like fuel, maintenance, and wear and tear incurred while on the job.

To establish fairness and clarity, businesses often adopt the standard mileage rate set by the IRS—though they can choose to use a different rate. When it comes to how to calculate the mileage rate for 2024, it’s $0.67 per mile.

Understanding mileage reimbursement rates

Mileage reimbursement rates serve as a standardized measure to ensure employees are fairly compensated for the expenses they incur while using their own cars for work-related purposes, without resulting in a taxable benefit. The rates take into account things like average fuel costs, wear and tear on the vehicle, insurance, and other maintenance expenses.

However, it's important for employees to understand that the rate they're reimbursed at may not necessarily cover all costs associated with their vehicle use; it's considered a contribution toward the overall expenses. This rate-based system simplifies an otherwise complex calculation of individual costs for each journey made by an employee.

For the self-employed, tracking mileage is crucial for accurately reporting expenses on tax returns. It can lead to significant tax deductions, reducing taxable income, and hence, the overall tax burden.

Standard mileage rate 

The standard mileage rate is a fixed rate per mile established by the IRS that taxpayers can use to calculate deductible vehicle expenses for business, charitable, medical, or moving purposes. For employers, it's a commonly used benchmark for determining the amount to reimburse employees for miles driven in their personal vehicles for work.

The IRS adjusts this rate annually based on an array of factors, including the changing costs of operating a vehicle. For businesses and employees, the advantage of using the IRS standard rate is its simplicity—it provides a clear and uniform guideline that is widely recognized and easy to apply. Additionally, reimbursements made at or below the IRS-approved rate are generally not taxable to the employee.

Variable mileage rate

On the other hand, the variable mileage rate considers differences by industry or job type and may adjust for variable fuel costs and other specific expenses. For instance, a construction company might offer a higher mileage rate than a standard office-based enterprise due to more demanding travel requirements and the need for larger vehicles.

Although this rate structure may be more complex, it can be more equitable for employees who frequently drive in areas with higher fuel prices or in conditions that cause increased vehicle wear. However, administratively, it requires more effort to track and calculate, and the rates must still comply with IRS guidelines to avoid becoming a taxable fringe benefit.

Calculating mileage reimbursement: Your step-by-step guide

The process of calculating mileage reimbursement involves a few key steps, from tracking your journey to determining how much you should be reimbursed. Here they are:

Step 1: Track your mileage

The foundation for calculating mileage reimbursement is accurate record-keeping. Start by keeping a detailed log of all work-related travel. This log should include dates, destinations, the purpose of the trip, and the exact mileage. There are several methods available:

  • Manual logs: Write down details in a notebook or printed log sheet.

  • Digital spreadsheets: Use a digital spreadsheet to record trip information.

  • Mileage tracking tools: Employers may provide or recommend specific tools or apps designed for tracking business mileage. These tools can simplify the process by using your device’s GPS capabilities.

Step 2: Determine the applicable rate

Once your mileage is documented, the next step is to determine the appropriate reimbursement rate. There are two primary types of rates:

  • Standard rates: The IRS sets standard mileage rates for business travel, medical or moving purposes, and service for charitable organizations. It can be a starting point for many calculations. 

  • Variable rates: If your job type or industry warrants a higher reimbursement due to increased expenses, calculate a variable rate. This considers fluctuations in fuel costs, vehicle maintenance, and other overheads, potentially leading to a rate above the standard.

Step 3: Compute the total reimbursement

With the mileage tracked and the rate determined, computing the total reimbursement is the final step:

  1. Basic calculation: Multiply the total mileage by the applicable rate.
    Example: If you have driven 100 miles for business purposes and the agreed-upon rate is $0.67 per mile, the reimbursement would be:

100 miles x $0.67/mile = $67.00

  1. Adjustments: If there are additional allowances or deductions based on company policy or specific job requirements, these should be factored in according to the final calculation.

Tips for accurate mileage tracking and reimbursement calculation

When it comes to managing transportation expenses for business, consider using GPS and mileage tracking apps to ensure precision. These tools automate the process and typically offer an export feature for reporting. Complement technology with the traditional method of maintaining receipts and logbooks. This dual approach serves as solid proof for your trips.

Here's a simple structure to keep your information in order:

  1. Date of travelPurpose of trip

  2. Starting point and destination

  3. Odometer readings (start-end)

  4. Total miles covered

  5. Additional expenses (if any)

Common mistakes and how to avoid them

Calculating mileage reimbursement can sometimes be tricky, leading to errors if not done carefully.

Overestimation

One common mistake is overestimating the miles driven for work-related activities. To avoid inflating the distance traveled, it's important to use an accurate tracking system or logbook.

Mixing business and pleasure

Moreover, don't mix personal and business travel. Ensure you separate the miles for each to prevent confusion. Implement a system to differentiate between the two, such as using separate logbooks or mileage tracking apps with categorization features. 

Incorrect rates

Applying reimbursement rates incorrectly can also lead to errors. Stay updated with the current standard rates, as they can change annually.

Missing deadlines

Lastly, missed deadlines can result in delayed or forfeited reimbursements. Stick to your organization's submission timeframes. Set reminders or use calendar alerts to submit your mileage logs and reimbursement forms on time.

Legal and tax considerations

When it comes to the legal and tax considerations connected to calculating mileage reimbursement, different stakeholders, including employers, employees, and the self-employed, must be considered. Employers are obliged to adhere to the IRS guidelines to properly compensate their employees for business-related travel expenses. It's their responsibility to maintain accurate records and establish a fair and accountable plan.

Employees, on the other hand, have the right to be reimbursed for business travel costs that exceed their regular commuting expenses. They should keep detailed mileage logs and receipts to substantiate their claims and ensure compliance with the organization’s policies.

Keep track of your mileage reimbursement with Expensify

Expensify makes it easy to track your mileage for reimbursement. Here’s how:

  • Effortless mileage tracking: Ditch the manual logs. Expensify automatically tracks mileage with your phone's GPS, saving you time and ensuring accuracy.

  • Unified expense management: No more scattered receipts, thanks to Expensify’s receipt scanner. Submit mileage claims alongside other expenses in Expensify for a one-stop shop for managing all business costs.

  • Faster reimbursements: Streamline your workflow. Employees can submit mileage requests in seconds, while managers approve them with just a few clicks.

  • Powerful reporting: Gain insights that matter. Expensify provides detailed mileage reports for clear spending visibility and effortless IRS compliance.

FAQs about how to calculate mileage reimbursement

  • The mileage reimbursement rate for 2024 is generally set by the IRS or other relevant tax authority and designed to cover the costs associated with the use of a personal vehicle for business purposes, including fuel, maintenance, insurance, and depreciation. To calculate reimbursement, simply multiply the approved mileage rate by the number of business miles traveled. For example, if the rate is 58 cents per mile and you travel 100 miles, your reimbursement would be $58.

  • For employees, mileage reimbursement is calculated using the standard mileage rate provided by the IRS or the rate stipulated by their employer if it differs (which cannot exceed the IRS rate without tax consequences). Employees should multiply the applicable rate by the total number of miles driven for work-related purposes, excluding regular commuting.

  • To make a mileage reimbursement claim, detailed documentation is required to substantiate the expenses. This usually includes a mileage log that records dates, trip purposes, destinations, and miles traveled. Additionally, supporting documents may include toll receipts, parking fees, and other travel-related expenses.

  • Mileage reimbursement can have tax implications for both the employer and the employee. For employers, reimbursements made at or below the IRS-approved rate are generally tax-deductible and are not considered taxable income for the employee. However, if the employer reimburses at a rate higher than the IRS standard, the excess amount is taxable. For employees, receiving reimbursements does not impact taxes unless they claim a mileage deduction on their tax return.

  • Mileage reimbursement requests should be submitted regularly to ensure accurate and timely compensation for business travel. Some companies have specific policies in place, requiring monthly, quarterly, or on-demand submissions. It's best to check with your employer for their preferred submission frequency and adhere to that schedule.

Cheryl Walsh

Born and raised in Cork, Ireland, she flew to Australia one day and it was so awesome she stayed. She kept her accent, swapped Guinness for coffee but is still a massive fan of the potato. When not saving the world she can be found in the theatre or at the top of a mountain wondering how best to get down.