Use this page to report calculation errors, accessibility problems, privacy concerns, security issues or advertising inquiries. Never send bank credentials, identification documents or full account numbers.

What to include

• The page, browser and device where the issue occurred.
• Steps to reproduce the issue and the result you expected.
• For calculation questions, an example with all personal information removed.

Support address

A support address will be published here after email routing and receipt have been tested. Until then, do not send sensitive information to an unverified address.

Security reports

Do not post suspected exposure publicly. A verified reporting address will be published here after testing. The service will never ask for a password, one-time authentication code or complete bank-account number.