Frequently Asked Questions

Do you need to log your business miles for the IRS?

Slacklog is a mileage log generator.

It only takes 15 minutes to generate a printable mileage report for your annual tax return. It's private and secure.

The cost is $10 with a Credit or Debit Card.

You answer a series of questions, and it creates a mileage log. You will receive a minimally formatted XLSX file with pre-filled data you can customize in your preferred spreadsheet editor.

Why Slacklog?

Using a mileage log allows you to accurately track your vehicle-related expenses, including fuel, maintenance, insurance, and depreciation. This helps you claim the correct deductions and ensures you don't overlook any eligible expenses.


Yes, it is relatively easy to make changes to your mileage log if it is stored as an XLSX (Excel) file. Excel is a versatile spreadsheet program that allows you to edit and manipulate data with ease. Here's how:
  1. Open the XLSX File: Double-click to open it in your spreadsheet software.
  2. Locate the Data: Your mileage log should be organized in rows and columns.
  3. Edit the Date or Distance: Find the cell with the information you want to change, click on it, and type in the new data.
  4. Press Enter: Press the "Enter" key to save the changes.
  5. Save the File: Ensure your changes are saved.
  6. Review the Log: Review the entire log to ensure accuracy.
  7. Keep a Backup: Always keep a backup copy of your original file.
Excel provides a user-friendly interface for editing data. However, be cautious when making changes, as accuracy and documentation are crucial. If you have any doubts, consider consulting a tax professional.

Deductions for Business Use

If you use your vehicle for business purposes, you can deduct the expenses related to that use. The Slacklog mileage log helps you track the number of miles you drive for business, which can be used to calculate your deduction. This can significantly reduce your taxable income and lower your tax liability.

Are you an accountant?

Interested in providing Slacklog to your clients? Contact us for a bulk license.

Tax day is coming

Get your mileage log early. This will give you time to adjust it and make it accurate.