Spotted a figure that looks off, hit a bug in one of the calculators, or want to see a tool that isn't built yet? Get in touch — mention which calculator you're asking about if it's tool-specific, and it's easy to place.
Every calculator on this site is built for guidance, not formal advice. If something looks wrong, it's worth double-checking against the original source first — HMRC, legislation.gov.uk, or your accountant — since rates and thresholds do change. But if the tool itself has the wrong rule built in, that's exactly the kind of thing worth flagging.
Site Docket is built and maintained by Bud Klair. See the About page for more on why the site exists, and the Privacy Policy for how the calculators handle your data (short version: nothing you enter ever leaves your browser).