A mileage registration helps you keep track of your business and private kilometres. On this page we explain in plain language what a mileage registration is, what typically goes in it and which choices you have. Educational in nature, not tax advice.
Last updated: 7 September 2026
A mileage registration, also called a trip or kilometre log, is an overview of the trips you make with a vehicle. It lets you see afterwards which kilometres were business, private or commuting. For entrepreneurs and drivers with a company car, that overview can be useful or necessary for various reasons.
A mileage registration is a structured overview in which you record a number of details per trip: when you drove, from where to where, how many kilometres it was and whether the trip was business or private. By keeping this consistently, you build an administration you can later use to substantiate how a vehicle was used.
The terms mileage registration, kilometre log and trip log are often used interchangeably and in practice mean the same thing: keeping a record of the trips driven.
There are various reasons why people track their trips. Which apply to you depends on your situation:
Want to know more about these situations? Read on about when a mileage registration is needed and about the role of a watertight registration for the company car tax addition.
Exactly which details are needed can vary from case to case. In general, a mileage registration typically contains:
An administration is generally most useful when it is complete and verifiable: without gaps and with details that add up logically. You can read the exact requirements under the Tax Administration requirements.
A mileage registration can be kept in different ways. Each has pros and cons:
Which approach fits depends on how much you drive and how much effort you want to spend. We compare the options in app or device for your mileage registration. RitGenie is an app that records and classifies trips automatically, so your administration stays in order with less manual work.
In this knowledge base we cover the most common questions around mileage registration. Pick a topic to read on:
When a mileage registration comes into play and what that depends on.
Read moreHow a watertight registration plays a part in private use of a company car.
Read moreThe difference between business, private and commuting trips and why it matters.
Read moreThe ways to track trips side by side, with their pros and cons.
Read moreWhich details are typically asked for a watertight administration.
Read moreA mileage registration (also called a trip or kilometre log) is an overview of the trips made with a vehicle. For each trip you typically record the date, the start and end odometer reading, the departure and arrival address and whether the trip was business or private. That way you can later trace which kilometres were business, private or commuting.
That depends on your situation. A mileage registration often comes into play when you want to substantiate how many private kilometres you drive in a company car, or when you want to be able to prove business kilometres. Whether it is required in your case, and exactly which conditions apply, is best checked with the Tax Administration or your own adviser.
A mileage registration typically contains details about the vehicle (such as make, model and licence plate) and, per trip, the date, the start and end odometer reading, the departure and arrival address, the route driven if it differs from the usual one, and whether the trip was business or private. The exact requirements can vary; check them with the Tax Administration.
In practice a mileage registration may be kept in different ways, for example on paper, in a spreadsheet, or with an app or system that records trips automatically. What matters most is that the administration is complete and verifiable. An automated solution can help reduce errors and gaps.
A watertight mileage registration can help substantiate how much you drive a company car privately. Whether that means the tax addition can be left out depends on your personal situation and the applicable conditions. This is not tax advice; present your situation to the Tax Administration or your own adviser.
RitGenie records and classifies your trips automatically, so your administration stays clear with less manual work.
Discover RitGenie