A business mileage log helps self-employed professionals, freelancers, and small business owners record work-related driving and maintain documentation for tax purposes.
If you use your vehicle for client meetings, deliveries, supplier visits, or other qualifying business activities, keeping accurate mileage records is essential.
But what should your log include, and how do you track mileage for taxes without missing important information?
This practical 2026 guide includes a free business mileage log template, completed examples, IRS recordkeeping guidance, and a simple weekly tracking routine.
Quick Summary
- A business mileage log documents the date, distance, destination, and purpose of work-related trips.
- The IRS requires adequate evidence to support business vehicle deductions.
- The 2026 business mileage rate is 72.5¢ per mile through June 30 and 76¢ beginning July 1.
- A free Excel or printable PDF mileage log can help organize trip records.
- Automatic tracking apps can reduce manual data entry and simplify monthly reporting.
Free Business Mileage Log Template for 2026
Keeping mileage records becomes easier when you have a consistent format.
Download our free business mileage log template to record trips, calculate mileage, and organize documentation throughout the year.
Free downloads:
The Excel template includes:
- A structured trip log with 600 blank entry rows.
- Automatic distance and 2026 mileage-rate calculations.
- Business, personal, and commuting trip classifications.
- Monthly mileage summaries.
- Missing-information review flags.
- Annual vehicle mileage tracking.
The template is an organizational tool, not an official IRS form.
How Do You Keep a Business Mileage Log for IRS Taxes?
To keep a business mileage log for IRS taxes, record each qualifying trip close to when it occurs. Include the date, business destination, purpose, and distance traveled. Maintain annual vehicle mileage totals, review your entries regularly, and retain supporting documentation. A spreadsheet or GPS mileage tracking app can help.
The IRS does not require one specific mileage log format.
According to IRS Publication 463, adequate records can include written logs or computerized records that substantiate business vehicle expenses.
Step 1: Record the Date and Destination
Enter the date of each business trip, starting location, and destination.
For example, a real estate professional traveling from an office to a property showing should document when and where the trip occurred.
Step 2: Document the Business Purpose
Explain why the trip was necessary.
Descriptions such as "client property inspection," "supplier inventory pickup," or "customer delivery" are more useful than simply writing "work."
Step 3: Calculate the Distance Driven
Use odometer readings or reliable GPS mileage records to document the distance traveled.
If your odometer starts at 48,100 and ends at 48,120, the trip distance is 20 miles.
Step 4: Separate Business and Personal Travel
Not every trip qualifies as deductible business travel.
Ordinary commuting and personal errands generally should not be included in business mileage totals.
Step 5: Review and Save Your Records
Review your log weekly for missing trips, incorrect classifications, or incomplete business purposes.
At the end of each month, save a copy of your records and update your annual mileage summary.
What Should a Business Mileage Log Include?
A reliable mileage log for tax purposes should contain enough information to substantiate your claimed business driving.
| Required information | Example |
|---|---|
| Trip date | October 1, 2026 |
| Starting location | Business office |
| Destination | Client property |
| Business purpose | Project inspection |
| Distance traveled | 34 miles |
| Vehicle identification | CAR-01 |
| Supporting information | Odometer or GPS record |
Vehicle identification is a useful organizational field, especially when multiple vehicles are used. The IRS also expects documentation of total vehicle mileage during the year.
Recording both business and overall mileage can help calculate the business-use percentage when applicable.
Business Mileage Log Example: Completed Records
Here is an illustrative example showing how a small business owner could organize business mileage.
| Date | Business purpose | Trip type | Miles |
|---|---|---|---|
| Jan. 14, 2026 | Client consultation | Business | 20 |
| May 6, 2026 | Supplier inventory pickup | Business | 28 |
| Oct. 1, 2026 | Project inspection | Business | 34 |
| Oct. 3, 2026 | Grocery shopping | Personal | 8 |
| Oct. 5, 2026 | Regular commute | Commute | 12 |
Total qualifying business miles in this example: 82 miles.
The 8 personal miles and 12 commuting miles are excluded from the business total.
This simple distinction is important because recording all vehicle activity does not mean every mile qualifies for a business deduction.
How to Calculate the Business Mileage Amount
The IRS changed its standard business mileage rate during 2026.
| Period | Business mileage rate |
|---|---|
| January 1 – June 30, 2026 | $0.725 per mile |
| July 1 – December 31, 2026 | $0.76 per mile |
The applicable rates are published on the IRS Standard Mileage Rates page.
Using our example:
January–June
48 business miles × $0.725 = $34.80
July–December
34 business miles × $0.76 = $25.84
Total potential standard mileage deduction: $60.64
This illustration assumes the taxpayer and vehicle qualify to use the standard mileage method. The result is a potential tax deduction, not a refund or guaranteed tax saving.
For additional information about deduction eligibility and filing, see our guide to claiming mileage on taxes in 2026.
How to Use the Free Excel Business Mileage Log
The downloadable spreadsheet is designed for individuals who want a structured approach to mileage documentation.
1. Open the Trip Log worksheet. Enter one trip per row, starting with its date and vehicle identification.
2. Complete the route and purpose. Add the starting point, destination, and reason for each business trip.
3. Enter the distance information. Provide starting and ending odometer readings or GPS mileage.
4. Select the trip classification. Choose Business, Personal, Commute, or another applicable category.
5. Check the calculated results. Complete business entries automatically receive the relevant 2026 mileage rate and an estimated amount.
6. Review the Summary worksheet. View monthly mileage totals, first-half and second-half calculations, and entries requiring attention.
The template also includes a separate vehicle worksheet for recording overall odometer mileage.
For best results, do not leave business trip descriptions or destination fields incomplete.
A Simple Weekly Business Mileage Tracking Routine
One of the most effective ways to maintain consistent records is to establish a weekly review process.
| When | What to do |
|---|---|
| After each trip | Record the route, purpose, and distance |
| End of each day | Check for missing business trips |
| Once a week | Review classifications and incomplete entries |
| End of each month | Export or save the mileage summary |
| End of tax year | Reconcile vehicle totals and prepare records |
This routine is particularly helpful for self-employed professionals who make frequent business trips.
Maintaining current records is generally more reliable than trying to reconstruct an entire year's driving from memory.
Manual Logs vs. Business Mileage Tracker Apps
A spreadsheet may be sufficient if you drive for business only occasionally.
However, manual logging requires entering information consistently, checking distances, and maintaining backups.
For drivers who travel frequently, business mileage tracker apps can simplify the process.
Automatic tracking tools use smartphone location technology to capture driving activity and help organize it into relevant categories.
For example, DriverAI Mileage Tracker provides GPS-based automatic trip tracking for business owners, freelancers, delivery drivers, and other professionals.
Its automatic mileage tracking features include trip detection, route history, business and personal classification, and downloadable mileage reports.
DriverAI supports exporting trip information in PDF, CSV, or Excel formats.
Regardless of the tool you choose, you should still review recorded trips for accuracy and confirm that each business classification is appropriate.
Common Business Mileage Log Mistakes to Avoid
Even a well-designed mileage tracking system requires regular attention.
1. Missing business purposes: Recording distances without explaining the reason for business travel can weaken your documentation.
2. Including ordinary commuting: Driving between home and a regular workplace is generally personal commuting, not deductible business mileage.
3. Forgetting annual odometer totals: Keep records showing total vehicle mileage, not only business miles.
4. Applying the wrong 2026 rate: Separate business trips occurring before July 1 from those occurring on or after that date.
5. Reconstructing records at tax time: Record travel promptly instead of relying on unsupported estimates.
To understand the broader recordkeeping requirements, read our Mileage Log Guide: IRS Requirements, Taxes, and Reimbursements.
Start Tracking Business Mileage With DriverAI
Maintaining an accurate business mileage log does not need to be complicated.
With a consistent tracking routine, a properly completed template, and regular reviews, business owners can keep their driving records organized throughout the year.
If manually recording trips is taking too much time, DriverAI can help automatically capture mileage, categorize driving activity, and generate downloadable reports.
Spend less time managing trip records and more time running your business.
Disclaimer: This article provides general information about US federal tax rules and does not constitute personalized tax advice. Deduction eligibility depends on individual circumstances. Consult a qualified tax professional when necessary.
Frequently Asked Questions About Business Mileage Logs
A business mileage log is a record of vehicle trips made for business activities. It documents information such as trip dates, business destinations, driving distances, and purposes. These records can help substantiate vehicle expense deductions and reimbursement requests.
Taxpayers claiming business vehicle deductions must have adequate records or other sufficient evidence to substantiate their expenses. A mileage log is a common way to maintain the necessary information, although the IRS does not prescribe a single mandatory template.
Yes. Computerized mileage records can be acceptable when they adequately support the relevant business vehicle expenses. Your spreadsheet should accurately document qualifying trips and be supported by appropriate information.
For occasional business driving, a spreadsheet can be practical. For frequent driving, an automatic mileage tracker can reduce manual entries by recording trip dates, distances, and routes. In either case, regularly review your records and identify qualifying business trips.
The IRS requires adequate substantiation of business miles and total vehicle mileage. It does not prescribe one specific format requiring starting and ending odometer readings on every individual entry. Odometer readings can strengthen documentation, while reliable GPS trip records may also help establish distances.
Ordinary commuting between home and a regular workplace generally is not deductible. Special rules may apply to travel involving a qualifying home office or certain temporary work locations.
Generally, you cannot separately deduct gasoline expenses already covered by the standard mileage rate. Certain qualifying business parking fees and tolls may be deductible separately, subject to applicable rules.
No. A mileage tracking app is a documentation tool. It cannot determine whether every trip is deductible or guarantee IRS acceptance. Tax eligibility depends on your circumstances, applicable rules, and the accuracy of your records.