Mileage Reimbursement Calculator

How to use the mileage calculator

1. Enter the miles. Use “Total miles” if you have a total from a log or an odometer. Use “Repeated trips” for the same drive made several times: enter the one-way distance, the number of trips, and whether each is a round trip.
2. Choose the rate. Pick an IRS standard mileage rate, or “My own rate” to enter a rate in cents per mile.
3. Add tolls and parking. These are added on top of the mileage amount.

The calculator opens on 120 miles at the IRS business rate for July 1 to December 31, 2026, 76 cents a mile: $91.20.

The 2026 IRS standard mileage rates

The IRS publishes standard mileage rates on its “Standard mileage rates” page. For 2026 it set two sets of rates, one for each half of the year:

The second-half rates were announced in IR-2026-29 and the first-half rates in IR-2025-128. We last checked these figures against irs.gov on November 2, 2026; the IRS page was last reviewed on July 28, 2026. The charity rate has stayed at 14 cents in every period the IRS table lists, back to 2011.

Use the rate for the period in which the miles were driven. A trip in May 2026 uses 72.5 cents for business, even if you file the expense in August.

The calculation

Rates are quoted in cents, so 76 cents is $0.76 a mile. For 120 miles: 120 × $0.76 = $91.20. With $8 in tolls, the total is $99.20.

For repeated trips, the miles are the one-way distance × 2 for a round trip × the number of trips. A 15-mile drive to a client site, there and back 20 times in a month, is 15 × 2 × 20 = 600 miles, or $456.00 at 76 cents.

The mileage amount is rounded to the cent. When several trips are reimbursed separately, rounding each one can differ from the total by a cent or two.

Employer reimbursement

Many employers reimburse employees who drive their own cars for work at the IRS business rate, because it is a published figure the IRS describes as the rate for the cost of operating a car for business. But an employer can set its own rate, higher or lower, or reimburse actual costs instead. Your company’s policy decides which applies; check with your employer or HR department.

If you are self-employed and bill clients for travel, the rate is whatever your contract says. Enter it as “My own rate”.

Mileage and taxes

The IRS sets these rates for people who deduct the cost of using a vehicle for business, charity, medical or military moving purposes. According to IRS Topic no. 510, parking fees and tolls attributable to business use are separately deductible, whether you use the standard mileage rate or actual expenses, which is why the calculator lists them separately. Whether you can claim a deduction, and which method to use, depends on your situation; this calculator does the arithmetic only and is not tax advice.

Keeping a mileage log

Reimbursement requests and deductions both rely on records. IRS Topic no. 510 notes that the law requires you to substantiate car expenses by adequate records or sufficient evidence. A simple log has, for each trip:

• the date;
• where you started and where you went;
• the business purpose;
• the miles, from the odometer or a map;
• any tolls and parking, with receipts.

Whether a particular trip counts as business mileage, such as a drive from home to the office versus a drive from the office to a client, has its own rules. Your employer’s policy, IRS Publication 463 or a tax professional can tell you how a particular trip is treated.

Checking your own cost per mile

To see whether a reimbursement rate covers your actual costs, divide a year’s car expenses by the miles driven. If fuel, insurance, maintenance, registration and depreciation total $9,000 over 12,000 miles, your cost is 75 cents a mile, close to the 2026 business rate. A car with poor fuel economy, high insurance or rapid depreciation can cost more per mile than the rate pays, and an older, efficient car can cost less. The “Per 100 miles” card makes it easy to compare rates at a glance.

Miles that span two rate periods

When rates change mid-year, as they did on July 1, 2026, split the miles by when they were driven and calculate each part at its own rate. For 400 business miles in June 2026 and 300 in July 2026:

• June: 400 × $0.725 = $290.00
• July: 300 × $0.76 = $228.00
• Total: $518.00

Applying the July rate to all 700 miles would give $532.00, and the June rate $507.50. Run the calculator once for each period and add the totals, or keep separate logs for each half of the year. The same approach works for a trip that starts on June 30 and ends on July 1: count each day’s miles at that day’s rate.

Medical, moving and charity rates

Besides the business rate, the IRS publishes a rate for medical driving and moving by members of the Armed Forces, 23.5 cents from July 1, 2026, and a rate for driving in service of a charitable organization, 14 cents. Choose them in the “Rate per mile” list. These rates matter mainly for people itemizing deductions or tracking volunteer driving, and whether a deduction applies depends on your situation.

A charity or a medical program that reimburses volunteers may use its own rate instead; enter it as “My own rate”.

Mileage rate versus fuel cost

The standard rate covers more than gas. A car that gets 25 miles per gallon uses 4.8 gallons on a 120-mile trip; at $3.20 a gallon, that is $15.36 in fuel, against $91.20 at the 76-cent business rate. The difference reflects the other costs of operating a car that the actual expense method lists, such as oil, repairs, tires, insurance, registration and depreciation. If someone offers to cover “gas money” instead of mileage, the two figures can be far apart. Knowing both helps you weigh an offer, or set a fair rate when you drive for a friend’s small business or a club.

Sources & assumptions

How this calculator gets its numbers. Full method: our methodology.

• Amount = miles × rate per mile, rounded to the cent, plus any tolls and parking entered.
• Built-in rates are the IRS standard mileage rates for 2025 and both halves of 2026, as published on irs.gov and checked November 2, 2026.
• Employers may reimburse at a different rate; enter it as “My own rate”. Not tax advice.

Sources

1. Internal Revenue Service, Standard mileage rates. 2026: 72.5¢ business Jan 1–Jun 30 (IR-2025-128), 76¢ business Jul 1–Dec 31 (IR-2026-29); charity 14¢; medical or military moving 20.5¢, then 23.5¢. Page last reviewed July 28, 2026; checked November 2, 2026.
2. Internal Revenue Service, Topic no. 510, Business use of car. The standard mileage rate and actual-expense methods, and parking fees and tolls in addition to the rate.

Last reviewed November 2, 2026. Rates change; the IRS announces new ones in a news release, as it did twice for 2026.