Calculator Methodology

Formula design

Each calculator defines typed inputs, normalization rules, and deterministic calculation functions. Generic calculators use schema-validated formulas; specialized tools may use dedicated renderers.

Validation

Automated pipelines verify formula completeness, route confidence, SEO metadata, accessibility labels, and duplicate detection before publication.

• Schema validation for inputs and outputs
• Post-generation quality scoring
• Registry integrity checks
• Accessibility and SEO audits

Assumptions & limitations

Calculators document assumptions such as compounding frequency, tax year, rounding behavior, and unit conventions. Limitations are disclosed where estimates simplify real-world complexity.

Updates

When formulas or regulatory defaults change, calculators are updated and marked with a revised Last Updated timestamp where applicable.