Contact & report an issue
We’d genuinely like to hear if a calculator looks wrong, a rule is out of date, or something is unclear. The more detail you can give — the calculator, the inputs you used, and the result you expected — the faster we can check it against the official source.
Please don’t include sensitive personal or financial details — a description of the issue is enough.
We read every report but can’t provide individual financial, tax or legal advice.