Fuel for a passenger car
Fuel for a private car is not deductible merely because you have the invoice. It depends on the activity and on how the vehicle is used. The app’s mileage aid is orientative: 0.26 euros per kilometre for a passenger car, with origin, destination and purpose. The regular commute is excluded.
It depends on use
A fuel invoice does not enter at 100% because the station issued it. If the passenger car is also private, the percentage has to be one you can justify. You confirm it. The app does not decide that the whole tank belongs to the activity.
- It is not automatic 100%.
- Activity and use both count.
- You confirm the percentage.
The mileage aid
The orientative rate is 0.26 euros per kilometre when the vehicle is a passenger car. The record needs origin, destination and purpose. The trip from home to your usual workplace is excluded. That aid does not replace the vehicle use percentage. How to record it is in expense tracking.
Common questions
Are all fuel invoices 100% deductible?
No. It depends on the activity and on how the vehicle is used. Do not mark 100% only because the invoice exists.
What rate does the mileage aid use?
An orientative 0.26 euros per kilometre for a passenger car, with origin, destination and purpose. The regular commute is excluded.
Official sources
Informational text reviewed on 26 September 2026. It is not tax advice and does not replace the Spanish Tax Agency or your accountant. Deadlines, rates, and forms can change.