Contact

Questions about the calculator, an error in a result or an interesting situation? Send us an email.

Good to know

There is no contact form; your email comes straight to us. How we handle it is described in the privacy notice.
Please send only what your question needs – for example the relevant figures instead of the whole bill. No ID or bank details.
We are happy to answer, but cannot guarantee a response time and do not provide legal or tax advice.
Advice by phone or video call (Teams); in-person appointments in Andalusia if there is no other way.