> ## Documentation Index
> Fetch the complete documentation index at: https://harnesscalendar.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Track mileage

> Add a vehicle and log business trips for your tax records.

Keep a mileage log of your business trips for your tax records. Business miles are typically deductible at the IRS standard mileage rate, and this log is the record your tax preparer needs.

## Before you start

* Mileage is a record for your own books, kept apart from what students owe. Trips aren't money in or out, so they don't show in your Profit & Loss, transaction report, or financial [summary](/docs/billing/understand-your-transactions).
* You'll find it under **Settings → Business records**, not under Finances, on every plan.

## Add a vehicle

You log trips against a vehicle, so add one first.

<Steps>
  <Step title="Open Business records">
    Go to **Settings → Business records**. Your vehicles are listed here, each showing its lifetime miles.
  </Step>

  <Step title="Add a vehicle">
    Use **Add vehicle**, then fill in the **Year**, **Make**, and **Model**. Add an optional **Description** (trim, color, and so on).
  </Step>

  <Step title="Save">
    Click **Add vehicle**. It joins your list, ready to log trips against.
  </Step>
</Steps>

## Log a trip

<Steps>
  <Step title="Open the log form">
    Open a vehicle from **Settings → Business records**, then use **Log mileage**. You can also press `m` from anywhere to open the form: if you have more than one vehicle, pick which one the trip was for.
  </Step>

  <Step title="Fill in the trip and save">
    Fill in the vehicle, date (defaults to today), miles, destination, and purpose, then click **Log trip**. It lands in that vehicle's mileage log.
  </Step>
</Steps>

## Your vehicle's records

Opening a vehicle from **Settings → Business records** gives you two tabs:

* **Mileage log**: every trip you've logged for this vehicle, with its date, miles, destination, and purpose. Click a trip to edit it, or use the row menu to **Edit** or **Delete**.
* **Linked expenses**: the Car & truck [expenses](/docs/accounting/expenses) you've tagged to this vehicle, so the trips and costs sit together.

## FAQ

<AccordionGroup>
  <Accordion title="How do my car expenses connect to a vehicle?">
    When you record a Car & truck [expense](/docs/accounting/expenses), you tag it to a vehicle. It then appears in the vehicle's **Linked expenses** tab and, unlike a trip, in your reports and Profit & Loss.
  </Accordion>

  <Accordion title="Can I edit a trip after I log it?">
    Yes. Open the vehicle, find the trip in its **Mileage log** tab, and click it to edit. You can also delete it from the row menu.
  </Accordion>
</AccordionGroup>