Why Keep a Mileage Log?
For anyone who drives for worksalespeople, consultants, freelancers, or smallbusiness ownersa mileage log is more than a notebook. Its a critical record that:
- Provides evidence for tax deductions or reimbursements.
- Prevents disputes with employers or the IRS.
- Helps you understand vehicle costs and optimise routes.
- Supports accurate budgeting for fuel, maintenance, and depreciation.
How to Record Mileage
The process can be broken into three simple steps:
1. Capture the Starting Odometer
At the beginning of each business trip, note the odometer reading. Modern smartphones can automatically capture this data via GPS, but a manual note works just as well.
2. Record the Purpose and Destination
Write a brief description of why youre traveling (e.g., Client meeting Acme Corp.) and the destination address. This detail is essential for tax auditors who may ask for proof of business purpose.
3. Capture the Ending Odometer
When the trip ends, record the final odometer reading. Subtract the start reading to calculate miles driven for that specific trip.
Tools & Apps
While pen and paper are reliable, digital tools save time and reduce errors.
| Tool | Platform | Key Features |
|---|---|---|
| Stride | iOS / Android / Web | Automatic GPS tracking, expense integration, free |
| Everlance | iOS / Android / Web | Autolog, receipt capture, mileage & expense reports |
| Microsoft Excel | Desktop / Online | Customizable templates, easy data export |
| MileIQ | iOS / Android | Onetap classification, automatic detection, 500 free logs/month |
Example Entry (Manual):
Date: 20260412
Start Odometer: 23,450
End Odometer: 23,485
Miles: 35
Purpose: Site visit Greenfield Construction
Notes: Discussed project timeline and material delivery.
Tax Benefits of a Mileage Log
The IRS (or your countrys tax authority) typically allows two methods for vehicle expense deductions:
- Standard mileage rate A fixed amount per mile (e.g., $0.655 per mile for 2024 in the US). This rate covers fuel, depreciation, insurance, and maintenance.
- Actual expense method You calculate real costs (fuel receipts, repairs, lease payments) and allocate a portion based on business miles.
Most drivers choose the standard mileage rate because its simpler and often yields a larger deduction. However, you must maintain a complete mileage log to claim any deduction.
Best Practices for an Accurate Mileage Log
- Log trips in real time. Waiting until the end of the day leads to forgotten details.
- Separate personal and business miles. Record the purpose for each trip; personal mileage is not deductible.
- Keep supporting documentation. Attach meeting agendas, invoices, or delivery confirmations when possible.
- Backup data regularly. Use cloud storage or export CSV files from your app.
- Review quarterly. A short quarterly audit catches errors before tax season.
When you travel frequently, consider setting a weekly reminder to review the log and ensure every trip is accounted for.
