Historical Mileage Reimbursement Calculator

Archived historical calculator — not approved for current use. This model is limited to a United States federal tax context; employer policies and state rules may differ. It contains older rate examples, but no 2026 IRS mileage-rate set or effective-date mapping has been approved for this page. Do not use it to infer a current reimbursement entitlement, deduction, rate, or legal requirement.

The mileage reimbursement calculator estimates the dollar value of eligible miles driven in a personal vehicle. Enter business miles, medical or moving miles, and charitable miles. Then choose a listed IRS mileage-rate year or enter custom rates. The calculator multiplies each category by its own per-mile rate, adds the category amounts, and shows the total reimbursement estimate.

This page follows the calculation’s calculation exactly. It does not decide whether your miles qualify, whether you should use actual vehicle expenses instead, or whether an employer must reimburse you. It performs the arithmetic for miles that you have already determined are eligible under the relevant policy or tax guidance.

How to use this calculator

Choose the IRS mileage rate year from the drop-down list. The built-in table includes 2020, 2021, the first and second halves of 2022, 2023, and 2024. If you need another year, or if your employer uses a different allowance, choose Custom rates and type the business, medical, and charity rates in dollars per mile.

Enter business miles for eligible work trips that are not ordinary commuting. Enter medical or moving miles only when they qualify under the rule set you are using. Enter charitable miles for eligible volunteer driving. The result includes category values, total miles, and the business rate used. For job comparisons, pair the result with the salary calculator and the budget calculator. If vehicle financing affects your costs, the loan calculator can provide context. When rates change over time, the inflation calculator can help you compare past reimbursements with current dollars.

Formula

The calculation calculates each category first:

$\text{business amount} = \text{business miles} \times \text{business rate}$

$\text{medical amount} = \text{medical miles} \times \text{medical rate}$

$\text{charity amount} = \text{charity miles} \times \text{charity rate}$

Then it adds the category amounts:

$\text{total reimbursement} = \text{business amount} + \text{medical amount} + \text{charity amount}$

It also reports total miles:

$\text{total miles entered} = \text{business miles} + \text{medical miles} + \text{charity miles}$

Inputs are invalid if miles are negative or if any custom rate is not a finite number. The built-in rates are examples from the listed years; rates can change yearly, so verify the current IRS page before relying on a number.

Checking a mileage reimbursement scenario

With the default inputs, the tax year is 2024, business miles are 100, medical miles are 0, charitable miles are 0, and the business rate is $0.67 per mile. The business amount is 100 × $0.67, or $67.00. The medical amount is zero, the charitable amount is zero, and the total reimbursement is $67.00. Total miles entered are 100 miles, and the business rate line shows $0.670 per mile.

For a mixed example, enter 60 business miles, 20 medical miles, and 10 charitable miles using 2024 rates. The business amount is 60 × $0.67 = $40.20. The medical amount is 20 × $0.21 = $4.20. The charitable amount is 10 × $0.14 = $1.40. The total is $45.80, and total miles entered are 90 miles.

Those examples show why categories should not be combined before applying a rate. Ninety miles at the business rate would overstate the mixed reimbursement, while ninety miles at the charity rate would understate it.

Standard rate versus custom rate

IRS standard mileage rates are published by year and sometimes change mid-year. Employers, nonprofits, and accountable plans may use the IRS rate, a lower rate, a higher taxable allowance, or an entirely separate reimbursement policy. The calculator includes a custom option so the arithmetic can match the rate source you are actually using.

The standard mileage method is also different from actual vehicle expenses. A standard rate bundles vehicle costs into a per-mile amount. Actual-cost methods track fuel, maintenance, insurance, depreciation, lease payments, and other costs separately. This calculator only handles the standard-rate or custom-rate multiplication. If your question is tax filing, reimbursement eligibility, or substantiation, check the current IRS guidance or your employer’s policy.

For employees, the estimate can help compare a job that reimburses mileage with one that expects you to absorb vehicle use. For volunteers, it can summarize charitable driving before documentation is reviewed. For self-employed workers, it can organize trips before tax software or a professional applies the current rules. In every case, the math is only as good as the mileage log and the rate year selected.

Common mistakes

• Entering ordinary commuting miles as business miles.
• Mixing miles from different tax years without changing the rate.
• Forgetting that 2022 has separate first-half and second-half standard-rate entries in the inputs.
• Adding tolls or parking by increasing miles instead of recording those costs separately.
• Using a stale rate after the IRS publishes a new annual standard mileage rate.

Sources

• IRS, Standard mileage rates — official standard mileage rate page; rates change by year.
• IRS, Topic no. 510, Business use of car — federal tax context for business vehicle mileage and actual expense considerations.
• CFPB, Auto loans — consumer context for vehicle financing costs that may affect driving economics outside reimbursement math.