The IRS mileage rate is simple, familiar, and easy to apply. But it was designed as a tax deduction tool, not a customized employee reimbursement strategy. When companies use the same national rate for every driver, they may overpay high-mileage employees, underpay low-mileage employees, and create compliance risk in states with employee expense reimbursement requirements.
The current IRS business rate has become the standard rate for mileage reimbursements. It’s easy to calculate at 72.5 cents per mile for 2026. However, with that ease comes hidden costs.
The IRS mileage reimbursement rate, or federal mileage rate, is not the best way to compensate employees for travel. Why? For three glaring reasons:
In a nutshell, the federal rate over-reimburses high-mileage travelers and under-reimburses low-mileage travelers. These inequitable results can lead to employee dissatisfaction and high costs. Controlling costs will be especially difficult if you employ many high-mileage drivers.
Each employee incurs different costs, so how can we fairly allocate reimbursement for all employees? As an auto reimbursement method, the government mileage rate falls short. This is because the IRS uses national average costs to derive the rate.
Here are three of the six components for calculating the IRS business mileage reimbursement rate:
The other three cost variables also further distort the calculations. Some employees live in areas with high gas prices and insurance costs. In these cases, the IRS rate may not be enough to cover their expenses, especially if they are not a high-mileage driver.
Unlike variable costs such as fuel and maintenance, fixed costs such as depreciation and insurance do not increase much with mileage. But a mileage rate is more than just a gas reimbursement rate. A driver must drive a certain number of miles each month to cover these fixed expenses, which account for more than half of their total costs. This is why the IRS rate often under-reimburses low-mileage drivers.
For 2026, the federal business mileage rate is 72.5 cents per mile. Of that amount, the IRS depreciation component is 35 cents per mile. However, a driver who drives fewer miles than average may not recover enough through per-mile depreciation to cover the vehicle's actual fixed costs. Because depreciation is spread across each reimbursed mile, low-mileage drivers can be under-reimbursed even when the company uses the IRS standard mileage rate.
Cost control poses one of the biggest challenges that effective organizations must face. The federal mileage rate encourages "driving for dollars." If you pay the IRS mileage rate, your costs depend on the accuracy of the rate and the employees' mileage reports.
Let’s consider the factor of employee-reported mileage. When providing an unquantified mileage rate, it is unreasonable to expect your employees to accept it as is. When gas prices or insurance rates increase while the mileage rate remains the same, employees will drive more to offset the costs.
Or worse, employees may inflate their mileage totals. This is called mileage fraud, and it is more common than you might think.
To protect their income from local increases beyond the average insurance costs and fuel prices, employees may
No one wants to suspect their employees of dishonesty. But is it right to position employees to have to choose between acting with integrity and covering cost deficits? In the end, many employees will act in their self-interest. Check whether mileage reimbursement has increased over the past few years as prices have risen.
One way to curb inaccurate mileage reports is to adopt a mileage tracking app. When you automate mileage capture, you eliminate the guesswork and reduce the incentive to fabricate data. A good mileage tracker will not only provide accurate mileage but also deliver valuable productivity reports.
Another way is to stop paying the IRS standard mileage rate and calculate an accurate rate for your employees. Base the rate on realistic costs for their territories. One way to calculate a more accurate rate is to use a fixed-and-variable rate reimbursement program, or FAVR, which addresses many of the weaknesses of the IRS mileage rate by separating fixed vehicle ownership costs from variable driving costs. Instead of applying a single national rate to all employees, FAVR can account for mileage, geography, insurance, fuel, depreciation, and other local cost differences. For companies with mobile employees, this can create a more accurate, defensible, and cost-controlled reimbursement program than relying on the IRS rate alone.
Try comparing the costs of paying the IRS business rate vs. a FAVR rate that matches your employees' variable costs.
The federal mileage rate is the norm for business mileage reimbursement in states that require employer reimbursements. These states with expense indemnification labor codes include California, Illinois, and Massachusetts, as well as the cities of Seattle, WA, and Washington, DC.
But what if the IRS mileage rate does not always comply with these laws?
For low-mileage drivers, there’s often a gap between expenses and what the IRS rate pays. These employees can seek recourse under labor codes in the three states with expense indemnification laws. Six other states can also enforce sufficient reimbursement of expenses. In employee-friendly states, it is crucial to pay a rate you can quantify.
In California, with its ever-increasing gas prices, the nationalized IRS rate may increasingly underperform. Businesses operating in California should especially pay attention to low-mileage and mid-mileage drivers.
There are alternatives to the IRS rate that will properly reimburse all employees, control costs, and comply with labor laws. You could adopt a "smart" mileage rate that adjusts up and down with gas prices. Or you could look into an FAVR program that separates fixed and variable costs and reimburses them differently.
The key is to ensure that your reimbursements reflect both employees' local costs and driving habits. A national reimbursement rate cannot do this. The strength of an FAVR plan is its use of local cost data to determine reimbursement rates.
The nice thing about using the IRS mileage rate for reimbursement is its ease. It is also easy to lose control of costs and to create dissatisfied employees. In 2026, whether the rate goes up or down, the three biggest flaws will remain the same.
Now is the time to take control of your costs and evaluate your car reimbursement policy. Explore new mileage tracking and reimbursement options today.
No. The IRS mileage rate is optional. Employers can use other accountable reimbursement methods, as long as the program is properly documented and compliant.
The 2026 IRS business mileage rate is 72.5 cents per mile.
High-mileage drivers may receive more reimbursement than their actual fixed costs require because fixed costs, such as insurance and depreciation, do not rise in proportion to every mile driven.
Low-mileage drivers may not drive enough business miles to recover fixed vehicle costs through a cents-per-mile reimbursement.
For many businesses, FAVR can be a better option because it separates fixed and variable costs and can reflect local cost differences.