Contact
One address, read by the person who builds these.
Last updated 27 August 2026
Particularly worth writing about
- A calculation you disagree with. Conventions differ between organisations, and some of the choices these tools make are defensible rather than universal. If one is wrong for your reporting framework, say so — with the worked example if you have it.
- A convention that should be stated. Every calculator documents the basis it applies. If one is applying something it has not told you about, that is a defect.
- A tool that should exist. What you are currently doing in a spreadsheet that you would rather not be.
The box on each tool page
Every calculator has a feedback box at the bottom. It opens your own email client with the tool name filled in, which saves you describing which page you were on. It goes to the same address.
What this address is not for
It is not a support desk for your close, and replies are not accounting advice — see the terms. Expect a reply in days rather than hours.