Mileage log generator (Fahrtenbuch)

A mileage log (Fahrtenbuch) pays off when you use your company car mostly for business: instead of the flat 1% rule, you only pay tax on your actual private share. The Finanzamt accepts it only if the log is complete, kept promptly and tamper-proof. This free generator covers every field required under § 4 EStDV and exports to CSV for your tax advisor.

Result

0/h

Minimum break-even rate

Vehicle

Trips

DateTimeOdometer StartFromToOdometer EndKilometers DrivenPurposeBusiness Partner / Client
0
0
0

MILEAGE LOG

Trips recorded3
Kilometers driven0 km
Business kilometers0 km
Private kilometers0 km
Home-to-work kilometers0 km

§ 4 EStDV

Legal note

A compliant mileage log must be kept promptly and be tamper-proof. This generator produces a CSV template covering the content requirements of § 4 EStDV — electronic mileage logs require tamper-proof software. Not tax advice.

All benchmarks and calculations are based on data available in 2026 and are not legally binding.

What every business trip entry needs

Each business trip belongs in the log with: the date, the odometer reading at the start and end, the origin and destination, the reason for the trip and the business partner or client you visited. For purely private trips the odometer readings are enough; for the commute to your first place of work a short note suffices. Late additions must be recognisable as such, and estimated or rounded kilometres are not allowed.

Why the Finanzamt rejects mileage logs

The most common reason is gaps: missing trips, contradictory odometer readings, or entries visibly written up in one sitting. Vague purposes like "client meeting" without a name, rounded kilometres and estimates also get logs thrown out. The second classic is the format: an Excel file that can be edited without a trace is not tamper-proof. If the log is rejected, the 1% rule applies retroactively for the whole year.

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