Keeping a mileage log doesn't have to be complicated, but it does have to be consistent. The sections below walk through the main tool categories - apps, spreadsheets, paper logbooks, and connected-vehicle platforms - along with the features that make each one more or less practical for tax purposes.
What every mileage record must include
Regardless of the tool you use, the IRS expects each entry to document:
- The date of the trip
- The origin and destination (or a general description of the route)
- The business purpose of the trip
- The number of miles driven
A record is considered contemporaneous when it is created at or near the time of the trip, not reconstructed from memory weeks later. Contemporaneous records carry significantly more weight if your return is examined.
Mileage-tracking apps
Smartphone apps are the most popular choice for frequent business drivers. The best ones use GPS to detect when you are driving, log the route automatically, and let you classify each trip as business or personal after the fact.
Commonly used mileage-tracking apps
- MileIQ - one of the most widely recognized options; uses automatic drive detection and lets you swipe to classify trips as business or personal
- Everlance - automatic GPS tracking with expense tracking built in; popular with freelancers and self-employed drivers
- Stride - free app aimed at gig workers and independent contractors; tracks both mileage and other deductible expenses
- Driversnote - automatic trip detection with IRS-compliant report exports; offers a team version for small businesses
- TripLog - flexible tracking modes including automatic, Bluetooth beacon, and manual; strong reporting options
- Hurdlr - combines mileage tracking with income and expense tracking; well suited to self-employed individuals who want a broader financial picture
- Zoho Expense - part of a larger expense management suite; useful if your business already uses other Zoho tools
Most apps offer a free tier with a monthly trip cap and a paid plan for unlimited logging. Your tax preparer may already have a preference based on the export formats they work with, so it is worth asking before you commit to one.
Features to look for
- Automatic trip detection - starts and stops logging without manual input
- GPS route capture - records the actual path driven, not just start and end points
- Business-purpose tagging - lets you attach a client name, job code, or free-text note to each trip
- Exportable reports - produces a dated log in PDF, CSV, or spreadsheet format suitable for your tax preparer
- Odometer backup - some apps prompt you to enter odometer readings periodically, which helps corroborate the log
Because the GPS track is timestamped and difficult to alter retroactively, app-generated logs tend to be easy to defend. The main risk is forgetting to classify trips - untagged trips may default to "personal" and get excluded from your deduction.
Connected-vehicle platforms
Some newer vehicles with built-in connectivity expose trip data through public APIs that private companies have built tools around. A well-known example is TeslaFi, a third-party service for Tesla owners that pulls drive data directly from the vehicle and lets you log in and tag each drive as business or personal. Because the data originates from the car rather than a phone sensor, it captures trips even when your phone is not present or the app is not running.
If your vehicle supports a similar platform, the workflow is typically:
- Connect the third-party service to your vehicle account using the manufacturer's API credentials.
- Let the service record all drives automatically in the background.
- Log in periodically - daily or weekly - to tag each drive with a business purpose.
- Export the tagged log at year-end for your tax preparer.
The same IRS requirements apply: each entry still needs a date, route, business purpose, and mileage. The vehicle-sourced data handles the first three mechanically; you supply the business-purpose tag. Check whether the platform can export a report in a format your preparer can work with before relying on it as your primary record.
Spreadsheets
A well-structured spreadsheet gives you full control over format and is easy to share with a tax preparer. It works best for drivers who have predictable routes or a modest number of business trips per month.
Suggested column structure
- Date
- Starting location
- Ending location
- Business purpose
- Miles driven
- Odometer start / Odometer end (optional but helpful)
- Running total
Keep the file in cloud storage so it is backed up automatically and timestamped by the platform. Avoid editing past rows after the fact - if a correction is needed, add a note in a separate column rather than overwriting the original entry.
Paper logbooks
A small notebook kept in the glove compartment remains a perfectly valid method. Pre-printed mileage logbooks sold at office-supply stores include columns for all required fields, which reduces the chance of leaving something out.
The practical challenge with paper is that entries are easy to skip when you're in a hurry, and a lost or damaged logbook cannot be recovered. If you prefer paper, consider photographing completed pages periodically and storing the images in the cloud.
Choosing the right tool
| Tool | Best for | Main limitation |
|---|---|---|
| Mileage-tracking app | High-volume drivers; those who want automation | Requires consistent trip classification; battery/data use |
| Connected-vehicle platform | Owners of supported vehicles who want phone-free logging | Vehicle and platform must support the API; business-purpose tagging still manual |
| Spreadsheet | Moderate drivers; those who want a custom format | Manual entry; easy to fall behind |
| Paper logbook | Low-volume drivers; those who prefer no technology | No backup; harder to total and export |
Keeping your annual odometer record
Whichever tool you use, note your odometer reading on January 1 (or the first day you place a vehicle in service) and again on December 31. These two numbers let you calculate total miles driven for the year, which is needed to support both the standard mileage rate and the actual expense method. Many drivers photograph their odometer on those dates and store the image with their tax documents.
Can I switch tools mid-year?
Yes. There is no rule requiring you to use a single method for the entire year. If you switch from a paper log to an app in July, keep both records and make sure there is no gap in coverage around the transition date. Your total annual mileage log is the combination of all records for the year.
Are app-generated or vehicle-platform logs automatically accepted by the IRS?
No format is automatically accepted or automatically rejected. The IRS evaluates whether a record is accurate, complete, and contemporaneous - not which software or platform produced it. A log that is missing business-purpose notes, or that has large unexplained gaps, can still be questioned regardless of its source. Conversely, a carefully maintained paper log can be just as defensible.
What if I forgot to log trips and need to reconstruct my mileage?
Reconstructed logs are allowed but carry more risk in an examination. If you need to reconstruct, use corroborating evidence such as calendar appointments, client invoices, email confirmations, or credit card receipts showing purchases at the destination. Document your reconstruction method and keep all supporting materials with the log. A tax professional can help you assess how complete and defensible the record is before you file.