ExpenseTrailYour Boss is Not "Big Brother": How to Keep a Company Car Mileage Log Without Violating GDPR Rules
Employers need a rigorous route log to deduct 100% of VAT and expenses for company cars. Employees, on the other hand, fear constant surveillance and invasion of their privacy. Where is the line between tax optimization and breaking the law? Learn the rules of legal GPS monitoring and discover why a modern mobile mileage tracker app is the ultimate solution that reconciles the interests of both the boss and the employee.
Every company with a vehicle fleet (even if it's just two cars) faces the same dilemma. On one hand, tax regulations require keeping a detailed vehicle mileage record so the company can fully deduct operating costs and claim 100% of the VAT.
On the other hand, employees often use company cars for private purposes as well—for example, commuting home after work or going grocery shopping on the weekend. This is where a serious clash occurs: nobody wants to be tracked after working hours.
What do the law and GDPR say?
Installing a hardwired GPS tracker under the car's hood that monitors the vehicle's position 24/7 is walking on thin ice. Labor laws and GDPR regulations clearly define the boundaries of privacy.
According to legal guidelines, employee monitoring must always have a justified purpose (e.g., ensuring security or logistical settlements) and must be proportionate to that goal. Moreover, secret tracking is completely illegal and can lead to severe financial penalties. An employer is obligated to inform the employee about the implementation of GPS monitoring at least two weeks in advance , and these rules must be clearly included in the company's work regulations.
However, the most important rule is this: tracking an employee's location during their free time and private drives violates their dignity and personal data protection laws. If your GPS system does not allow turning off location tracking after working hours when the car is used privately, you are breaking the law.
The Mobile App: A "Privacy-First" Technology Building Trust
How, then, do you reconcile these conflicting needs? How can you provide your accountant with a complete mileage log while protecting your employees' privacy from the employer? The solution is to abandon outdated, permanently installed "GPS bugs" in favor of smart mobile apps.
A mileage tracker app installed on an employee's smartphone gives them full control over the collected data. Here is how it works in practice:
The Privacy Switch: When an employee finishes work, with a single tap (or swipe), they classify the trip as "Personal." At that moment, the app changes how it operates: it hides the exact geographical coordinates (start and end points) from the employer, sending only the raw data regarding the number of kilometers driven. The accounting department maintains the continuity of the odometer (which is required by the tax office), and the boss has no idea where the employee spent their afternoon.
Defined Working Hours: The app can be configured to automatically categorize routes based on a schedule. If an employee works from 8:00 AM to 4:00 PM, all drives during these hours are logged as business trips (with a full GPS trail). Drives after 4:00 PM are automatically marked as personal without sending location data to the headquarters.
Data Transparency: The employee has constant access to see exactly what data they have generated and sent to the company. This builds mutual trust, eliminates the stress associated with the feeling of "being watched," and significantly eases the implementation of the system within the team.
Conclusion
A digital vehicle mileage log does not have to mean surveillance. Instead of installing complex and legally controversial hardware trackers in cars, companies should rely on smartphone-based solutions. A modern mileage tracker app acts as a digital shield—protecting the company from tax errors while simultaneously guaranteeing full GDPR compliance and respect for your team's private life.