Mileage Reimbursement Calculator

A mileage reimbursement calculator turns the miles you drove for business into a dollar amount, using the IRS standard mileage rate or a rate you set. Enter your miles and rate above to see the reimbursement instantly — useful for employees claiming travel, employers paying it out, and the self-employed tracking a deduction.

What Is Mileage Reimbursement?

When you use a personal vehicle for work, the cost of that driving — fuel, wear and tear, maintenance, insurance, depreciation — adds up. Rather than tracking every one of those expenses, most people use a single per-mile rate that bundles them together. The IRS publishes a standard mileage rate each year for exactly this purpose. Multiply the business miles you drove by the rate and you have a fair, simple reimbursement or deduction figure. Employers use it to pay staff back for work travel; self-employed people use it to calculate a vehicle deduction at tax time.

How to Use This Calculator

1. Enter the total miles driven for business.
2. Pick a standard rate for the tax year, or choose Custom to enter your own.
3. The rate per mile fills in automatically; adjust it if your business uses a different rate.
4. Read the reimbursement — simply miles multiplied by the rate.

How It Is Calculated

The math is deliberately simple: reimbursement equals miles times the rate per mile. If you drove 100 business miles at a rate of $0.70, your reimbursement is $70.00. The power of the standard rate is that it already accounts for the many small costs of operating a vehicle, so you don’t have to itemize gas receipts and repair bills. That’s why both the IRS and most company policies favor it — it’s fair, predictable, and easy to audit.

Keeping a Mileage Log

Whatever rate you use, the reimbursement is only as good as your records. A proper mileage log notes the date, the purpose of the trip, the starting and ending points, and the miles driven. Commuting from home to your regular workplace generally doesn’t count as business mileage, while travel between job sites, to clients, or to temporary work locations usually does. Keeping a contemporaneous log — filled in as you go rather than reconstructed months later — is what protects a reimbursement or deduction if it’s ever questioned. Many people use a notebook in the glovebox or a phone app; either works as long as it’s consistent and accurate.

Tips and Common Mistakes

• Use the correct rate for the tax year — the IRS changes it, sometimes mid-year.
• Don’t mix business and personal miles; only business driving is reimbursable.
• Remember the standard rate already includes fuel and maintenance — don’t also claim those separately under this method.
• Log trips as they happen; estimates made later are far weaker if reviewed.
• Check whether your trip type qualifies — ordinary commuting usually does not.

Standard Mileage Rate vs. Actual Vehicle Expenses

When it comes to deducting or reimbursing the cost of business driving, there are two broad methods, and it helps to understand both even if you use the standard rate this calculator is built around. The standard mileage method, which you use here, multiplies your business miles by a single per-mile rate that already bundles fuel, maintenance, repairs, insurance, and depreciation into one figure. Its great advantage is simplicity: you only need an accurate mileage log, not a shoebox of receipts. The actual expense method works differently — you track every real cost of operating the vehicle over the year (gas, oil, tires, repairs, insurance, registration, lease payments or depreciation) and then deduct the business-use percentage of those total costs. The actual method can produce a larger deduction for expensive vehicles or those with high operating costs, but it requires far more record-keeping and careful documentation. For many self-employed people and small businesses, the standard mileage rate wins simply because it’s so much easier to maintain and defend. There are rules about which method you can switch to and when, particularly once you’ve used one method for a given vehicle, so it’s worth checking the current guidance before changing approaches. Whichever method you use, the foundation is the same: a reliable, contemporaneous mileage log. Record the date, destination, business purpose, and miles for each trip as it happens. That record is what substantiates the figure if it’s ever reviewed, and it’s also what lets you compare the two methods at year-end to see which gives you the better result. Keep in mind, too, that reimbursement and deduction are not quite the same thing — an employee being reimbursed by an employer, a business reimbursing its owner, and a self-employed person taking a deduction each follow slightly different rules. The calculation of miles times rate is identical, but how the result is treated for tax purposes can differ. When the stakes are significant, a quick conversation with a tax professional about which method and treatment fit your situation is usually time well spent.

Frequently Asked Questions

What is the IRS standard mileage rate? It’s a per-mile figure the IRS sets each year that bundles the typical costs of operating a vehicle, so you can value business driving with one number.

Does the rate change every year? Yes, and occasionally mid-year. Always use the rate that applies to the period you’re calculating.

Can my employer pay a different rate? Yes. Employers can set their own rate; choose Custom above to use it. Paying above the IRS rate can have tax implications for the excess.

Does commuting count? Generally no. Driving between home and your regular workplace is usually personal, while travel to clients, job sites, or temporary locations is usually business.

What records do I need? A log with the date, purpose, route, and miles for each business trip, ideally filled in at the time of travel.

This tool is for general information only and is not tax advice. Confirm current rates and rules with the IRS or a tax professional.