Driving logbook – what is it and how to do it correctly?

Route-Tracker | Published 28.3.2026

A driving log is an important part of tracking business and private trips. A properly kept driving log makes taxation easier, supports the verification of deductions, and makes driving data management reliable.

A driving logbook is a document that records vehicle driving information to distinguish between work and private driving. In Finland, a driving logbook is particularly important for taxation purposes when a car is used for both work and private driving.

A properly kept driving log can have a significant impact on taxation and deductions.

What should be entered in the driving logbook?

According to the tax authorities' instructions, the driving logbook must contain at least:

Date
Start and end point of the ride
Driving route if necessary
Mileage
Purpose of driving (business/private)
Vehicle mileage (beginning and end)

Incomplete information may result in tax deductions not being approved.

Is a driving logbook mandatory?

A driving logbook is not mandatory for everyone, but it is practically necessary if:

you use the car for work
you are applying for mileage reimbursement
you have a company car and want to show that the driving is divided

Without a driving log, the tax authorities may assess your driving unfavorably.

Electronic or manual driving logbook?

There are two ways to keep a driving log:

Manual driving logbook

into a notebook or Excel
prone to errors and forgetfulness
requires continuous logging

Electronic driving logbook

automatic tracking using GPS
all runs are automatically saved
easy reporting to the tax authorities

An electronic solution saves time and significantly reduces errors.

Why is a driving log important for taxation?

The driving logbook can be used to:

separate work and private trips
prove deductions
avoid tax penalties
optimize taxation

Especially for companies and entrepreneurs, a driving logbook is a key part of financial management.

How does the electronic driving logbook work in practice?

An electronic driving logbook usually works like this:

A tracking device is installed in the vehicle
The ride is automatically recorded
User classifies the ride (work/private)
Reports are generated automatically

An electronic driving log, such as Route-Tracker, automates driving data and makes reporting easy and reliable.

Who is an electronic driving logbook suitable for?

An electronic driving logbook is particularly suitable for:

for entrepreneurs
for companies with vehicles
for employees who drive for work
for the transportation and maintenance industries

The more driving, the greater the benefit from automation.

Frequently asked questions

Can I make a driving logbook electronically?

Yes, you can. An electronic driving logbook is a fully accepted and often recommended method.

How accurate does a driving logbook need to be?

The driving logbook must contain all essential driving information in order to be accepted for taxation purposes.

What happens if the driving logbook is missing?

The taxman may estimate mileage, which may result in smaller deductions or additional taxes.

Summary

A driving logbook is an important tool for taxation and monitoring vehicle usage. Manual recording works, but an electronic driving logbook makes the process much easier and more reliable.

Solutions like Route-Tracker bring automation, accuracy, and ease to driving log maintenance.

Tip for implementation

If you want to maximize the benefits:

switch to electronic driving logbook
make sure all runs are automatically saved
utilize reporting in accounting