Editorial policy

Different AI models or different work sessions make, check and correct a page. The maker does not check its own page.

• Make: an AI model (Claude, by Anthropic) reads the official sources and writes the calculation rules, data tables and text.
• Check: a separate, independent AI checker (an independent Claude agent, or Codex, by OpenAI) compares the page with the official text. It checks each number, unit and period of application.
• Correct: another AI work session edits the page from the check report. It must check the sources again itself. It does not copy the check results.
• Accept: the AI work session that integrates the work runs the calculation tests, works out sample cases by hand, and opens the official sources to compare each changed number.

No person reviews the pages on this site. No lawyer, accountant or other professional reviews them.

On each page, “How we made this page” says if an AI model checked the page, and on which date.

Pages about tax, social insurance, labor law and visas can affect your money or your rights. These pages have one more step: after the corrections, they are checked again. A page passes only when the new check report has no item marked “wrong” or “out of date”.

These pages have a disclaimer at the bottom. See the disclaimer.

When an official source does not state a rule, for example how to round, the page calls it “this tool's assumption”. It does not present it as a rule.

When we cannot confirm a statement from an official source, we add a source, change it to an assumption, or remove it.

When a rule changes or we receive a correction, we edit the page and change its “Last updated” date.

We have no regular schedule to check pages again. Use the sources and dates on each page to decide if the data still applies.