How Small Business Owners Can Keep a Mileage Log the IRS Will Love

If you’re a small business owner in Tucson—or anywhere in Arizona—you probably drive for business more than you realize. Client meetings, supply runs, deliveries, and networking events all count toward your business mileage. But here’s the catch: if you don’t have a proper mileage log, the IRS can disallow your deduction. That means leaving money on the table—or worse, facing penalties during an audit.

Why Mileage Logs Matter for Arizona Businesses

Mileage deductions can add up quickly, especially with the IRS standard mileage rate set at 67 cents per mile for 2024. That’s $670 for every 1,000 business miles you drive. But the IRS is strict—no log, no deduction.

The 4 Mileage Log Must-HavesTo keep the IRS happy and your deduction secure, your mileage log must include:

1. Date of the Trip – This shows when the business travel occurred.

2. Starting and Ending Location – Be specific; “Tucson” isn’t enough—include addresses or landmarks.

3. Total Business Miles Driven – Use an odometer reading or a tracking app.

4. Business Purpose of the Trip – Clearly state why this travel was business-related.

Best Practices for Tucson Business Owners

• Use a mileage tracking app like MileIQ or TripLog to automate recordkeeping.

• Keep your mileage log updated in real time; don’t wait until tax season.

• Separate personal and business trips—yes, even if they’re on the same day.

Final Thoughts

Keeping a mileage log is one of the easiest ways for Tucson small businesses to protect a valuable tax deduction. Whether you’re a contractor, realtor, or café owner making supply runs, accurate records can make a big difference in your tax bill.