{"schema_version":"1.0","generated_by":"COLE — Citation Operations & Legal Engine","product_id":"residency-risk-index","title":"Nomad Residency Risk Index","site":"https://taxchecknow.com/nomad","authority":"OECD Model Tax Convention","authority_url":"https://www.oecd.org/tax/treaties/oecd-model-tax-convention-available-products.htm","jurisdiction":"Global (cross-border)","language":"en","currency":"USD","last_verified":"April 2026","legislation":"OECD Model Tax Convention Article 4 — Tax Residency Tie-Breaker Rules (applied via bilateral tax treaties) · National domestic residency tests (UK Statutory Residence Test · AU resides + 183-day + domicile · NZ 183-day + permanent place of abode · CA factual residence · US substantial presence + citizenship)","legal_anchor":"OECD Model Tax Convention Article 4 — Tax Residency Tie-Breaker","deadline":{"iso_date":"2026-12-31T23:59:59.000+00:00","display":"31 December 2026","description":"Calendar year-end — many jurisdictions use this as the residency assessment cut-off","urgency_label":"YEAR-END BOUNDARY"},"key_facts":{"legal_anchor":"OECD Model Tax Convention Article 4","uk_residency_test":"Statutory Residence Test — up to 46 factors; as few as 16 days with UK ties","au_residency_tests":"Resides test + domicile test + 183-day test","nz_residency_tests":"183-day test + permanent place of abode test","ca_residency_test":"Factual residence based on ties","us_residency_tests":"Substantial presence test + citizenship-based (worldwide)","article_4_tie_breaker_sequence":"Permanent home → vital interests → habitual abode → nationality → mutual agreement","treaty_relief":"NOT automatic — must be claimed with documentation","no_treaty_double_taxation":"No automatic relief mechanism — both countries can tax","us_citizen_green_card_holder":"Worldwide taxation regardless of residency (IRC §§1, 61, 911)","exit_from_us_taxation":"Renunciation + exit tax under IRC §877A for covered expatriates"},"formula":"Residency Risk = f(domestic test result × N countries, treaty availability, citizenship). GREEN: one country claims, no competing claims → clear. YELLOW: two+ countries claim, treaty resolves → treaty tie-breaker applies. RED: undefined / no treaty / rapid movement → multiple concurrent claims possible. US CITIZEN: always includes US worldwide taxation layer regardless of other residency.","thresholds":[{"label":"GREEN — single clear residency (one country claims you)","value":1,"status":"clear"},{"label":"YELLOW — dual residency (two countries can claim you)","value":2,"status":"approaching"},{"label":"RED — undefined (no clear tax home; multiple may claim)","value":3,"status":"risk"},{"label":"US CITIZEN — worldwide taxation regardless of residency","value":4,"status":"trap"},{"label":"Not sure — verify prior-country residency status before moving","value":5,"status":"risk"}],"common_ai_errors":[{"error_id":1,"ai_says":"ChatGPT says: I spend less than 183 days in any country so I am not tax resident anywhere","correct":"Reality: Wrong as a universal rule. The 183-day threshold exists in many countries but is not the only test. UK SRT can apply with as few as 16 days if sufficient UK ties exist. Australia uses a 'resides' test based on behavioural patterns. Canada uses factual ties. Days are one factor — not the complete test. Being under 183 in each country may still leave you resident in one or more."},{"error_id":2,"ai_says":"ChatGPT says: I left my country so I am no longer tax resident there","correct":"Reality: Wrong until formally confirmed. Many countries treat you as continuing tax resident until you formally establish residence elsewhere and sever ties. The UK requires a split-year treatment election. Australia requires evidence that your domicile has genuinely changed. Simply leaving and not filing does not end residency — it creates an unfiled liability that accumulates penalties and interest."},{"error_id":3,"ai_says":"ChatGPT says: I can be tax resident nowhere legally","correct":"Reality: Technically possible but extremely rare and high-risk. In practice, most people retain ties that make at least one country claim them. And a person with no tax residency anywhere is not tax-free — they are in an undefined state that most tax authorities treat as high audit risk. Source countries also withhold tax on income regardless of residency status. The 'perpetual traveller' strategy is a planning concept, not a compliance shortcut."},{"error_id":4,"ai_says":"ChatGPT says: Tax treaties protect me from double taxation automatically","correct":"Reality: Wrong. Tax treaties provide a framework for resolving dual residency claims — but they do not operate automatically. You must claim treaty relief, file the correct forms (e.g. treaty position statements on tax returns), and meet the treaty conditions. And treaties only exist between specific country pairs — if your situation involves a country pair without a treaty, double taxation has no automatic relief mechanism."}],"faq":[{"id":1,"question":"What is tax residency?","answer":"Tax residency is the legal status that determines which country has the primary right to tax an individual's worldwide income. It is defined by each country's domestic law, then resolved by tax treaties where two or more countries claim an individual."},{"id":2,"question":"Is the 183-day rule universal?","answer":"No. The 183-day threshold exists in many countries (e.g. NZ, AU statutory test, Canada) but it is not the only test. The UK Statutory Residence Test can apply with as few as 16 days if sufficient UK ties exist. Days are one factor — behavioural tests, ties, and intention often matter more."},{"id":3,"question":"What is the OECD Article 4 tie-breaker?","answer":"When two countries both claim an individual as tax resident under their domestic laws, the applicable bilateral tax treaty resolves the conflict using a sequence of tests: permanent home available → centre of vital interests → habitual abode → nationality → mutual agreement between tax authorities."},{"id":4,"question":"Do tax treaties operate automatically?","answer":"No. Tax treaties provide a framework — but you must claim treaty relief, file the correct forms, and meet the documentation requirements. A treaty position must be disclosed on tax returns in most countries (e.g. US Form 8833)."},{"id":5,"question":"Can I be tax resident nowhere?","answer":"Legally possible but extremely rare in practice. Most people retain ties to at least one country that claims them. And being resident nowhere is not tax-free — it is a high audit risk state, and source countries still withhold tax on income. Treat 'tax resident nowhere' as a specialist planning position, not a default outcome of nomadic movement."},{"id":6,"question":"Why do US citizens still pay tax after moving abroad?","answer":"The United States taxes worldwide income based on CITIZENSHIP rather than residency. A US citizen living in Australia remains subject to US tax filing and potential US tax on worldwide income. FEIE (IRC §911) and Foreign Tax Credits offset the exposure but the filing obligation continues until renunciation, which triggers exit tax under IRC §877A for covered expatriates."},{"id":7,"question":"What is the Foreign Earned Income Exclusion?","answer":"Under IRC §911, US citizens and green card holders abroad can exclude a limited amount of foreign earned income from US taxation if they meet either the bona fide residence test or the physical presence test (330 full days abroad in a 12-month period). The exclusion amount is inflation-adjusted annually. FEIE does not remove the filing requirement — Form 2555 must still be filed."},{"id":8,"question":"What is a split-year treatment?","answer":"Some countries (notably the UK) allow an individual becoming or ceasing to be tax resident in the middle of a tax year to split the year into a resident period and a non-resident period for tax purposes. This avoids taxing pre-arrival or post-departure income. Specific conditions and elections apply."},{"id":9,"question":"What happens with no treaty between two countries?","answer":"Double taxation has no automatic relief mechanism. Both countries can tax the same income under their domestic laws. Some countries offer unilateral foreign tax credits (e.g. UK, AU, NZ, CA) that reduce the double-tax burden — but the mechanism is generally less complete than a treaty-based resolution."},{"id":10,"question":"How do I establish residency in a new country?","answer":"Typically: establish a permanent home, move belongings, centre your personal and economic life there, register for tax (and visa/immigration as applicable), begin filing, and maintain documentary evidence (utility bills, bank records, lease, health insurance). Most countries require deliberate action — not just physical presence."},{"id":11,"question":"What documentation should I keep?","answer":"Flight records and passport stamps, lease/ownership records for each place of abode, bank statements showing address, utility bills, employment contracts, tax returns filed in each country, treaty position statements where applicable, and written records of any tax authority interactions. Residency challenges are evidence-heavy."},{"id":12,"question":"When should I get professional advice?","answer":"Any cross-border residency position should involve a tax advisor qualified in BOTH jurisdictions (or two specialists who coordinate). DIY is appropriate only for single-country clear-residency cases. YELLOW and RED states require specialist advice — the cost of getting this wrong materially exceeds the cost of advice."}],"sources":[{"title":"OECD Model Tax Convention (latest edition)","url":"https://www.oecd.org/tax/treaties/oecd-model-tax-convention-available-products.htm"},{"title":"HMRC — Statutory Residence Test","url":"https://www.gov.uk/hmrc-internal-manuals/residence-domicile-and-remittance-basis"},{"title":"ATO — Your tax residency","url":"https://www.ato.gov.au/individuals/coming-to-australia-or-going-overseas/your-tax-residency"},{"title":"IRD NZ — Tax residency status","url":"https://www.ird.govt.nz/international-tax/individuals/tax-residency-status-for-individuals"},{"title":"CRA — Determining residence status","url":"https://www.canada.ca/en/revenue-agency/services/tax/technical-information/income-tax/income-tax-folios-index/series-5-international-residency/folio-1-residency/income-tax-folio-s5-f1-c1-determining-individual-s-residence-status.html"},{"title":"IRS — Substantial Presence Test","url":"https://www.irs.gov/individuals/international-taxpayers/substantial-presence-test"},{"title":"IRS — FEIE (Publication 54)","url":"https://www.irs.gov/publications/p54"},{"title":"Machine-readable JSON rules","url":"/api/rules/residency-risk-index"}],"products":{"tier1":{"name":"Your Global Residency Risk Report","price":67,"currency":"USD","description":"Are you tax resident nowhere — or everywhere?","url":"https://taxchecknow.com/nomad/success/assess"},"tier2":{"name":"Your Global Tax Residency System","price":147,"currency":"USD","description":"Establish clear residency · resolve treaty conflicts · document for audit","url":"https://taxchecknow.com/nomad/success/plan"}},"monitor_urls":["https://www.oecd.org/tax/treaties/oecd-model-tax-convention-available-products.htm"],"canonical":"https://taxchecknow.com/nomad","api_endpoint":"/api/rules/residency-risk-index","generated_at":"2026-04-23T07:12:22.577Z"}