The standard mileage rate is a method used by the IRS to determine the deductible cost of operating a vehicle for business purposes. Instead of tracking actual car expenses, taxpayers can deduct a certain number of cents for each mile driven for business. This rate is adjusted annually by the IRS to reflect changes in the cost of operating a vehicle, such as fuel, maintenance, and insurance.
For 2025, the IRS announced the following standard mileage rates:
Business Use: 67 cents per mile
Medical/Moving Use: 24 cents per mile (for 2025, this rate is for moving expenses for active-duty military members only)
Charitable Use: 14 cents per mile (this rate is set by law and does not change)
Using the standard mileage rate can simplify tax preparation, especially for those who drive frequently for business. It's important to keep accurate records of the miles driven for each purpose.
miles
miles
function calculateMileageDeduction() {
var businessMilesInput = document.getElementById("businessMiles");
var medicalMilesInput = document.getElementById("medicalMiles");
var resultDiv = document.getElementById("result");
var businessMiles = parseFloat(businessMilesInput.value);
var medicalMiles = parseFloat(medicalMilesInput.value);
var businessRate = 0.67; // 2025 business mileage rate
var medicalRate = 0.24; // 2025 medical/moving mileage rate
var businessDeduction = 0;
var medicalDeduction = 0;
var totalDeduction = 0;
if (!isNaN(businessMiles) && businessMiles >= 0) {
businessDeduction = businessMiles * businessRate;
} else {
resultDiv.innerText = "Please enter a valid number for Business Miles.";
return;
}
if (!isNaN(medicalMiles) && medicalMiles >= 0) {
medicalDeduction = medicalMiles * medicalRate;
} else {
resultDiv.innerText = "Please enter a valid number for Medical/Moving Miles.";
return;
}
totalDeduction = businessDeduction + medicalDeduction;
resultDiv.innerText = "Estimated Tax Deduction: $" + totalDeduction.toFixed(2);
}