Business Mileage Calculator
How much business mileage did a vehicle travel? Separate business distance from personal vehicle use.
Interactive inputs
Live result
30.00
MPG
Change an input to update the diagram.
Answer first
How much business mileage did a vehicle travel?
The Business Mileage Calculator separates business driving from personal use when a single vehicle serves both purposes. Enter total odometer miles and personal miles to see exactly how many miles qualify as business use for tax deductions and expense reports.
Current calculator output
30.00
MPG
How it works
Business Mileage Calculator: inputs, formula, and result
This tool isolates work-related driving by taking total miles and subtracting personal commute distances. It then applies a defined reimbursement rate to calculate the exact cost incurred while conducting official company business.
Formula
Business Miles = Total Miles - Personal Miles
Worked example
1,800 total miles minus 600 personal miles = 1,200 business miles.
Pro tip: The IRS requires a clear distinction between business and personal miles. Maintain a detailed mileage log for every trip to support your deduction.
Personalized guidance
What changes the result for Business Mileage?
The output shifts based on the strictness of mileage logging, the frequency of client visits, and whether side trips are properly excluded from the total. Traffic, tire pressure, vehicle load, terrain, driving style, weather, fuel price, and the quality of the input data can change the final result.
Estimated result condition
100%
Select factors that match this business & fleet calculation.
When should you use this calculator?
Use this when you need to separate personal vehicle use from work duties. It is necessary for accurate corporate accounting and maintaining clean records for potential audits.
Selected usePlan with Business Mileage Calculator
FAQ
FAQs about Business Mileage
3 questions
Question 1 of 3 is open
What counts as business mileage?
Travel to client sites, secondary offices, business errands, and temporary work locations. Commuting from home to your regular office is personal, not business mileage.
How do I separate business and personal miles?
Keep a mileage log recording each business trip. At year end, subtract total business miles from odometer miles to determine personal miles.
Can I deduct 100% of miles if I only use the car for business?
Yes. If a vehicle is used exclusively for business, 100% of miles are deductible. However, the IRS may scrutinize claims of 100% business use.
Also useful