H. Jhon publishes FreeKalc and coordinates its calculator updates. This profile does not claim a CPA, chartered-tax-adviser, payroll-practitioner or equivalent professional credential.
Financial calculators are built from versioned rules and the primary sources linked on each relevant page. Automated tests check arithmetic, cross-page consistency, schema and internal links before deployment. These controls reduce mistakes but do not replace review by a qualified professional who knows a user's circumstances.
Editorial responsibility
- Record the tax year and rules version used by each calculator.
- Link material tax assumptions to tax-authority or government sources.
- Publish known limitations instead of silently applying unsupported filing-status rules.
- Log material corrections in the methodology correction history.
Independent review
Unless a page explicitly names a qualified jurisdiction-specific reviewer and gives verifiable credentials, readers should not assume that page has received independent professional tax review. FreeKalc results are planning estimates, not tax, legal or payroll advice.
Report a problem
If a result differs from an official calculation or payslip, send the URL, inputs and expected result through the contact page. Material fixes are tested and logged.