Contact
For questions and suggestions, get in touch. The email address will be published here once it is available.
How to reach us
For questions, suggestions and error reports.
What you can write about
Calculator questions
If something in the breakdown isn’t clear — tell us what you entered and the result you expected.
Data corrections
If you think a rate or amount is off, send a correction with its source — every value on this site carries its own source and citation.
Suggestions
An idea for a new calculator or a note on the content — we’re glad to consider it.
Note
Please don’t email us personal payslip data — your name, tax number (NIF), or exact amounts. A sample is enough for a rough estimate: the calculator never sends what you enter anywhere. Google Analytics 4 is active on every page of this site, without setting cookies — details are in the privacy policy.