# Log mileage

> Record a trip with its distance, unit and rate, see how the amount is worked out, and bill it to a client. The apps do not track trips by GPS.

Source: https://support.billingmart.com/time-and-expenses/mileage
Updated: 2026-10-17 · Applies to: Web, iPhone, Android · Section: Time, mileage & expenses

A trip is a distance, a unit and a rate, logged against a client. When you bill it, the amount is the distance times the rate. You type the distance yourself. The web page and the phone apps do not record trips by GPS, and the apps do not ask for your location.

> **Note:** Mileage is a plan feature. Owners, admins and staff can log and change trips. If your plan does not include it, a new trip is refused. On the web the message may only say you do not have permission.

## Log a trip on the web

1. Open **Mileage** in the **Capture** group of the sidebar.
2. Select **Log a trip**.
3. Choose the **Client** and the **Date**.
4. Enter the **Distance**. It must be more than zero and can have up to three decimals.
5. Choose the **Unit**: mile or kilometre.
6. Enter the rate in the **Rate per mile** or **Rate per kilometre** box, which follows the unit you chose. The dialog shows the amount as you type.
7. Add **From**, **To**, **Purpose** and a project if you like.
8. Leave **Rebillable** ticked if the client pays for the trip.
9. Select **Save**.

On your phone, open **More**, then **Time & expenses**, choose **Mileage** and tap **Add**. The labels are **Distance**, **Rate per unit (optional)** and **Bill to the client**. On the phone, **Bill to the client** starts off, and you turn it on for each trip. See [Time and mileage on your phone](https://support.billingmart.com/phone-apps/time-and-mileage-on-your-phone.md).

## The rate and the unit

Each trip stores its own unit and its own rate. A later change never reprices a trip you already logged. BillingMart does not supply standard mileage rates. You enter the rate you charge.

The page can show a business default, in a line above the list. The line reads either "Business default" with a rate and unit, or "No business mileage default yet". When a default exists, a new trip on the web starts with that unit and rate, and you can change both. Today there is no screen where you can set this default, even though the line says to set it on the business page. Type the rate on each trip. The phone does not fill in a default rate.

## How the amount is worked out

The amount is the distance times the rate per unit, rounded to the nearest cent (or the smallest unit of your currency). A trip with no rate shows no amount. The list shows distance to one decimal, but the amount uses the full distance you typed.

## Edit and delete

Any owner, admin or staff member can edit or delete a trip that is not billed yet, not only the person who logged it. Deleting asks you to confirm. After a trip is billed to an invoice, it cannot be changed or deleted. If you remove its line from the draft, or void the invoice, the trip is unbilled again.

## Billing a trip

A trip is billed only if it is **Rebillable**, has a rate in the same currency as the invoice, and has a client. The invoice line holds the date, the project, the places, the distance and the purpose. BillingMart marks mileage lines as tax-exempt. A trip with no rate is left out when you bill, so add the rate to it first.

Read [Bill time, mileage and expenses](https://support.billingmart.com/time-and-expenses/bill-time-and-expenses.md) for the full steps.