This Calculator Accuracy Policy explains how Ready to Calculate handles formulas, source notes, updates, testing, and the limits of online estimates.
Calculators are estimates
Our calculators are built to provide useful estimates, not final professional advice. Tax, financial, legal, engineering, health, education, and pricing outcomes can depend on details that no short web form can fully capture.
Formula and data approach
Where a calculator depends on public rules, rates, thresholds, or provider prices, we try to identify the relevant year, date, or source near the calculator or in the guide. For example, UK tax tools identify the tax year used, while AI pricing tools should identify when pricing was last reviewed.
Testing approach
Before publishing or updating a calculator, we check normal inputs, edge cases, mobile layout, result labels, basic accessibility, and whether the result seems reasonable against the stated formula or source. Where possible, we compare simple examples manually.
Known limits
Some calculators simplify real-world rules to keep the tool usable. Payroll systems can use live tax codes and year-to-date income. Wedding quotes can vary by location and supplier. AI prices can change without much notice. Engineering results can depend on physical conditions outside the form. When assumptions matter, the page should state them near the result or in the FAQ.
High-stakes decisions
Use calculator results as planning estimates. Verify high-stakes financial, legal, medical, engineering, education, or tax decisions with official sources or a qualified professional before acting.
Report an issue
If you find a calculator that appears wrong, email contact@readytocalculate.com or use the Contact page. Include the calculator URL, your inputs, the result shown, what you expected, and any official source you are comparing against.