Vehicle Business-Use Percentage Calculator
Find the business-use share of a vehicle from your mileage log and split actual vehicle costs into business and personal parts.
- Business use
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- Business share of costs
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- Personal share
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Your numbers stay in your browser — this page sends nothing to any server. Results are estimates for planning, not financial or tax advice.
$12
Want this as a spreadsheet?
Mileage & Vehicle Expense Log — Trip log with odometer-based miles, a vehicle expense register and a year summary for both deduction methods.
See what's included