# Odometer reading

> Recording start and end odometer values to compute trip distance.

**URL:** https://quilometragem.com/glossary/odometer-reading

**Summary:** Recording start and end odometer values to compute trip distance.

- Odometer reading is the traditional method: write down the odometer at trip start and end, the difference is the distance.
- The IRS and most tax authorities accept it when paired with business purpose.
- Combined with a dashboard photo or GPS, it becomes primary evidence.
- Less common today since digital maps and GPS automate the process.

Odometer reading is the traditional method: write down the odometer at trip start and end, the difference is the distance. The IRS and most tax authorities accept it when paired with business purpose. Combined with a dashboard photo or GPS, it becomes primary evidence. Less common today since digital maps and GPS automate the process.