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CalculatorAtlas

Corrections Policy

How to report a calculator or content error, and how confirmed errors are fixed.

What you can report

  • An incorrect formula or a wrong answer.
  • An outdated regulatory value, such as a tax limit or a rate for the wrong year.
  • A broken tool: it will not load, freezes or shows an error for valid input.
  • An incorrect worked example or FAQ.
  • A source that does not support the claim it is attached to.
  • An accessibility problem.

How to report it

Email support@calculatoratlas.net with the page address, the values you entered, the result you saw, the result you expected and, if you have one, a source.

What happens next

  1. We reproduce the problem by running the calculator with the inputs you sent.
  2. We check the formula and, where it applies, the official source and the year.
  3. If the error is confirmed, the calculation, its independently produced check values and the page’s worked examples are corrected together, and the automated test suite is run again.
  4. If the change alters results people may have relied on, the page says so.
  5. If a calculator cannot be corrected quickly, it is taken offline until it is fixed. A page that cannot be verified is not left online with a disclaimer.

What we do not promise

We do not promise a response time, and we may decline a request that turns out not to be an error, for example a result that is correct for the stated assumptions. We cannot give personal advice about your own calculation. See the contact page and the methodology.