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What to write to us about

Corrections. If a calculator gives a result you believe is wrong, include the inputs you used and the result you expected. Accuracy reports are our top priority.

Tool requests. Tell us what you were trying to calculate when you didn’t find a tool for it. Several tools on this site exist because someone asked.

Business and advertising enquiries. Please mention your organisation and the nature of the enquiry in the subject line.

We usually respond within 2 business days. Please note we cannot provide personalised tax, investment or legal advice; the tools and articles are for general information.