What to write to us about
- Corrections to formulas — especially welcome. If a figure on this site does not match the law, tell us the country, the calculator, and what the official source says (a link to the law, gazette or tax authority page is perfect). Accuracy is this site's whole promise, and verified corrections are applied promptly and credited on the page's "last verified" note.
- A calculator you wish existed. A country or benefit we have not covered yet? The roadmap holds twenty tools, and requests help us order them.
- Something broken. A wrong number, a page that misbehaves on your phone, a confusing explanation — describe what you entered and what you expected.
- Business and partnerships. Loona Automation also builds automation and AI tools for businesses; the same address reaches us.
Please do not send personal documents — payslips, contracts or ID papers are never needed to answer a question about a formula, and the calculators themselves keep your numbers on your own device. We read every message and normally reply within a few days.