OpenTaxCalculator

OpenTaxCalculator helps employees, freelancers and people comparing job offers estimate taxes and take-home pay. It offers free browser-based calculators for the United States, United Kingdom, Canada, Australia and New Zealand, plus salary comparisons across countries. Each calculator shows a breakdown of its result and cites official government sources for its rates. No account is required, and calculator inputs stay in the browser. The tools provide estimates and do not file tax returns.