Mileage Reimbursement: Rules, Rates and Tracking

close up delivery man

If you drive a vehicle for your employer, you may be wondering “How much should I be reimbursed for mileage?

Luckily, we can help. In this article, we focus on the specifics around car mileage for business purposes and the employee mileage reimbursement rules. We’ll also delve into the best practices from both an employee’s and an employer’s point of view, covering the full spectrum with IRS-Proof solutions.

What is Mileage Reimbursement?

This overarching term refers to several possible situations that can occur for employers, independent contractors, and employees. Essentially if you are an employee or you own and run a business, one of the following scenarios is likely:

  • Employees in the business use a privately owned vehicle for business-related activities.
  • Employees are provided with a company car, which belongs to the business
  • You are self-employed

We’ll cover each category in more detail a little later, though the above scenarios account for all possible contexts in which mileage reimbursement is relevant

What does Mileage Reimbursement Cover?

While people often ask “What is a mileage tax?” or “How to deduct mileage on taxes?”, it is essential to first understand what mileage reimbursement actually covers, as it is only after this question is answered that the aforementioned questions can truly be answered.

In short, mileage reimbursement covers the numerous costs of operating a vehicle for business reasons. That means oil, gas, and general maintenance as a result of wear and tear are covered – as are parking fees and tolls, depending on what your employer decides to include.

To delve a little deeper, we’ll first need to go through the rules of mileage reimbursement.

The Rules of Mileage Reimbursement

First off, it’s worth mentioning that it is not mandatory for an employer or business to even have a mileage reimbursement policy, except in the state of California. It is, however, recommended that employers offer some kind of plan to their employees – driving a vehicle for work is a large expense, and most employees expect some kind of reimbursement on their fixed and variable costs as they are not eligible for an itemized deduction since the 2017 Tax And Jobs Cut (TCJA).

Nowadays, if employees don’t get reimbursed for their mileage, their salary is often effectively and drastically reduced, and those employees may look for work elsewhere. This is why it is typically the case that employers do provide some kind of plan, and there are many plans to choose from. The most common thing to do is simply to use the Internal Revenue Service’s (IRS) standard mileage rate, which accounts for both variable and fixed costs.

business man with car

What is the Federal Mileage Rate?

At the end of every year, the IRS sets a federal mileage reimbursement rate for the next year. As for 2023, this rate is 65.5 cents per mile you drive – the same as the standard mileage rate that self-employed persons use. If an employer uses this rate, then all that their employees must do is log their mileage when they drive.

The best way to log that mileage is through a mileage tracker app – MileageWise has an excellent, IRS-Proof solution for that, available on both App Store and Google Play Store.

Try MileageWise for free

It is also important that when you do mileage for your employer, that mileage must be connected to the business in some way. As an employee, you need to have incurred and consequently paid deductible expenses while performing various services for your employer.

Using a Custom Cost-Per-Mile Mileage Rate

While many employers certainly just use the federal rate, any business owner can also choose to use their own custom cost-per-mile rate or a fixed amount which is referred to as a car allowance. When a car allowance is given to an employee, it functions as an upfront payment that is meant to cover all of the employee’s vehicle costs. While many businesses still use this method, it can sometimes be problematic in the face of a constantly changing economy – gas prices have already risen significantly at the time of writing in 2023.

What’s more, some employees come up short with a car allowance because of depreciation, exorbitant service costs, or simply higher prices across the board. If you already receive a car allowance from your employer and it is insufficient to cover all of your vehicle costs, then it might be worth discussing a change of policy with whoever is responsible for reimbursement for mileage at your company.

Fixed and Variable Rate (FAVR)

FAVR is an alternative that many employers use – it incorporates a fixed amount intended to pay fixed costs such as lease payments, insurance premiums, or depreciation. It also contains a variable travel rate or cost-per-mile component – this reflects your variable costs such as gas, oil, and maintenance.

We should point out that under FAVR the cost-per-mile component is likely to be significantly lower than the IRS’s federal mileage rate, simply because that rate incorporates both fixed and variable costs and a general assessment of the costs involved in the operation of a vehicle.

TIP: FAVR Reimbursement Calculator

Mileage Reimbursement Scenarios

As we mentioned earlier, there are a number of scenarios that are possible relating to mileage reimbursement. Let’s take a look at each situation in a little more detail, while also paying attention to what the likely or best arrangement is for each one.

You are Self Employed

If you are self-employed, you do not technically fall into the normal category of what can be considered as mileage reimbursement, but you are reimbursed for your mileage by the IRS, provided that you submit an accurate mileage log to them. This can be a relatively simple endeavor. You should take a look at the IRS mileage rate 2023, which is essentially the standard mileage rate of 65.5 cents per mile driven for business purposes.

This is indeed the most common way for independent contractors to claim tax deductions on their mileage, and it requires you to keep a comprehensive, IRS-Proof mileage log of your trips, which you then submit to the IRS to be reviewed.

You Drive a Company Car to Work

If you drive a company car for work, it is likely that you must pay for some variable costs related to that vehicle as you use it – for example gasoline and servicing fees. Often, employers may take care of the fixed costs involved in that vehicle, which means that the cost per mile you can claim through your employer is likely to be subject to a substantial reduction when compared to the IRS’s standard mileage rate. Exactly what that cost per mile mileage rate ultimately depends on what an employer decides.

You Drive a Personal Vehicle for Work

This scenario is also especially common among employees that drive a vehicle for business purposes, usually as a part of a smaller business or enterprise company. Typically, employers use one of several methods:

  • A cost-per-mile type of reimbursement, e.g. the standard federal mileage rate
  • A lump sum as a car allowance
  • FAVR, which is intended to cover both variable and fixed costs

As we’ve already discussed here today, there are benefits and disadvantages to each method, though the federal mileage rate and FAVR are generally the fairest to employees.

woman with a nice reimbursement plan

How to Calculate Mileage Reimbursement

Now let’s get into some examples which pertain to each of the above situations. We’ll take a look at each situation and a real-world example with the figures.


Gary drives his Audi TT for his private detective business which contracts with individual clients. As a part of this job, he must visit various locations on behalf of his clients – these trips would be constituted as business trips. Commuting to and from his place of residence to a client would not, however, constitute a business trip, and therefore should be logged as personal in his mileage log.

In total, Gary typically does around 27,000 miles for business purposes in a year, which means that under the standard mileage rate, he qualifies for a $17,685 rebate from the IRS.

Driving a company car for work

Jessica drives her company car – a Toyota Corolla – for a large IT consultancy firm that often visits clients to discuss projects and various other matters. Because her firm covers the fixed costs of the Corolla, the cost per mile rate offered by her employer for business purposes is just 50 cents per mile. Jessica mostly visits clients within her city, which means that she does a little less mileage than self-employed persons who drive long distances more frequently.

Last year, Jessica’s mileage totaled 9,000 miles, meaning that she was able to be paid $4,500 for mileage reimbursement by her employer – this money was also tax-free.

Driving a personal vehicle for work

Audrey works for a small marketing firm that provides advice on content strategy for a variety of businesses looking for more engagement on their online platforms. As part of the work, she has to drive to a number of locations, some of which are outside the city where she lives. In total, Audrey does around 15,000 miles per year, which, under the federal mileage rate, would qualify for $9,825 in mileage reimbursement from her employer.

However, Audrey currently receives a car allowance of just $6,000 per year from her employer – meaning that she misses out compared to other people in the industry who have mileage reimbursement plans more suited to their needs.

Audrey should probably talk to her employer about an alternative cost per mile rate – either to cover her fixed and variable costs or, to use FAVR, which would likely also prove favorable compared to her current situation.

How Does Mileage Tax Work?

A big part of making sure your mileage reimbursement is tax-free is meeting the requirements of what the IRS calls an accountable plan. An accountable plan has to fulfill certain needs in order to be accepted, let’s examine the IRS’s requirements:

  • Miles you drive must be in the context of business, i.e. you have to have incurred deductible costs while carrying out various functions in your role as an employee of a company.
  • You need to inform your employer of your expenses within what is considered a reasonable period of time, stipulated as 60 days by the IRS.
  • You have to return any mileage reimbursement money you have received in excess of what you needed within 120 days of when it was paid by your employer.

As long as these conditions are fulfilled, your mileage reimbursement money will usually be tax-free, though if that money exceeds the IRS’s federal mileage reimbursement rate then it will be counted as additional income on top of your salary, and that excess is also taxed by the IRS.

Effective Mileage Tracking Options

Fundamentally, there are three main choices: a paper-based logbook, Excel, or a mileage tracking app. These options are, however, not equal – an app will save you tons of time and money so that you can focus on the things in life that really matter to you. MileageWise Automatic Mileage Tracker App has 3 auto-tracking methods, an in-built IRS auditor, a Team Web Dashboard for companies, and numerous other features – check out all of our features.

Savvy employers often use an app like MileageWise’s – we offer a Team Web Dashboard where all employees can submit workflows and get paid for their mileage reimbursement quickly. Try MileageWise’s IRS-Proof mileage tracker app and its accompanying web dashboard free with all of the features for 14 days!

Try MileageWise for free