Create a spreadsheet-ready mileage record with the details businesses and tax preparers expect. Download the CSV and add one row for every business trip.
September 20, 2026 — office to client site and return — client project meeting — 24 business miles. Keep the calendar event or customer invoice as supporting evidence.
The free interactive tool is available above when JavaScript loads. No signup is required.
Update the log at or near the time of travel. Record the date, origin, destination, business purpose, miles and supporting notes. Beginning and ending odometer readings help establish total vehicle use.
Record the date, business purpose, origin, destination and miles for each trip, plus supporting records.
Contemporaneous records are strongest. A reconstructed log needs reliable supporting evidence and should not rely on unsupported estimates.
Beginning and ending odometer readings plus business trips help establish business, commuting and personal use.
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General information only; reviewed August 2026.