People-first usefulness
Every indexable calculator page must answer a real question, provide a working tool, state the formula, interpret the result, show a worked example, and disclose assumptions. We do not create thin pages for keyword variations.
Accuracy and evidence
Formulas are checked against hand-calculated or independently derived fixtures. Reliable primary sources are linked where they clarify financial definitions, standards, or public guidance. A source does not substitute for explaining the site's own calculation.
Authorship and claims
Content is published by Calculate & Decide as an organization. We do not invent expert biographies, testimonials, customer logos, awards, ratings, or audience statistics.
Updates and corrections
Pages show a meaningful publication or review date. Dates change when content or calculation behavior is materially reviewed, not simply to appear fresh. Reports are evaluated against the formula and tests; confirmed errors are corrected promptly.
Independence
The launch version contains no advertising, affiliate links, or sponsored rankings. If commercial relationships are introduced, they should be disclosed clearly without influencing formulas or editorial conclusions.