Our Methodology

How Nomadic Tax sources, verifies, and presents cross-border tax information — our editorial standards, data sources, and update frequency.

Primary Sources

All tax rules and figures on this platform are sourced from official government publications: IRS.gov (US), HMRC Gov.uk (UK), Canada.ca (Canada), ATO.gov.au (Australia), and equivalent authorities for other jurisdictions. We do not rely on secondary summaries as our primary source.

Tax Calculator Accuracy

Our calculators use year-specific constants (tax brackets, rates, contribution limits, exclusion amounts) derived directly from official sources. We maintain separate datasets for each tax year and update them as legislation is enacted or amended. Each calculator includes the tax year it applies to and links to the relevant official guidance.

Policy Tracker

The policy tracker is updated daily using web search to retrieve legislative and regulatory changes from official government sources. Policy updates include verified source URLs pointing to the originating legislation or guidance.

Editorial Standards

• We distinguish between settled law, proposed legislation, and commentary
• We note when rules are complex, contested, or fact-specific
• We recommend consulting a qualified tax adviser for your specific situation
• Found an error? Tell us — we take accuracy seriously