Contact RivoCalc
Have a calculator suggestion? Found an error in a result? Want to report a technical issue? Use the form below — we only ask for your name and email, and your email is used solely to reply about what you reported.
Our response commitments
- We acknowledge receipt, investigate, and fix calculation errors within 30 business days.
- We update values that depend on annually published tables (taxes, regulations) as soon as they're released.