Tax Residency vs Domicile vs Residence Permit: What Each One Means and Where They Conflict
Tax residency decides where you are taxed on your worldwide income; it is set by each country's own rules — mostly day counts and ties such as a home or family — so you can be tax resident in two countries at once, with a treaty tie-breaker deciding between them. Domicile is your permanent legal home, the place you intend to live indefinitely; you generally have only one at a time, and it matters for US state income tax (New York, for example) and for some estate taxes, including US estate tax for non-citizens, while the UK replaced domicile with a residence-based test on 6 April 2025. A residence permit is immigration permission to live in a country; it says nothing about tax, and it carries its own absence limits — for example 6 months for a German residence permit, 12 months for EU long-term residence, 2 years for UK indefinite leave to remain. The three are judged independently, so meeting one test never guarantees the others.
Step 1: The three concepts side by side
People use "resident" for three different things, and the confusion is expensive. A tax resident owes tax on worldwide income to a country for a year. A person's domicile is the one place they treat as their permanent home. A residence permit is immigration permission to live somewhere. Different authorities run each test, with different evidence and different calendars — so the answer to "where do I live?" can be three different countries at once.
| Question | Tax residency | Domicile | Residence permit |
|---|---|---|---|
| What it is | Where you are taxed on worldwide income for a given year | Your permanent legal home — where you intend to live indefinitely | Immigration permission to live (and often work) in a country |
| Who decides | Each country's tax authority under its own law (HMRC, IRS, state tax departments) | Courts and tax authorities applying common-law principles to your facts and intent | The immigration authority that issued it (Home Office, USCIS, Ausländerbehörde) |
| Test used | Day counts plus ties: home, family, work, centre of interests | Physical presence plus intention to stay indefinitely; evidenced by home, family, possessions, filings | Holding valid status and meeting its conditions, including absence limits |
| Can you have two? | Yes — a tax treaty tie-breaker then decides for treaty purposes | Generally no — exactly one at a time | Yes — one per country, each with its own rules |
| Typical day thresholds | 183 days in many countries; UK SRT 16–182 days depending on ties; US 183 weighted days over 3 years | None — but a former state's 184-day statutory test runs alongside it (New York) | Absence limits: 6 months for German and Qatari permits; 12 months for EU long-term residents; 2 years for UK ILR |
| Measured over | Tax year (UK 6 April–5 April; India 1 April–31 March; US and many others calendar year) | No window — a continuing status until you change it | Usually one continuous absence, not a yearly total |
| What you lose by leaving | Resident taxation stops, often only from the next tax year or a split-year date; source income stays taxable | Nothing until you prove a new domicile — the old one sticks | The permit itself — often automatically, by operation of law |
The practical consequence: leaving a country rarely ends all three at the same moment. Your permit can lapse while you are still tax resident; your tax residency can end while your old domicile keeps a state or estate tax claim alive; and a new permit does not make you tax resident anywhere by itself. The rest of this guide takes each concept in turn and then shows where they collide.
Step 2: Tax residency — where you are taxed
Tax residency is decided country by country, each under its own domestic law; there is no international definition that binds them. Most tests combine a day count with ties — a home, family, work or economic interests. The basics are in what is tax residency?
The 183-day rule
Spending more than half the year in a country — usually 183 days — is the most common trigger, but the details differ: some countries count a calendar year, some their own tax year, some any rolling 12 months, and they disagree on whether arrival and departure days count. And 183 days is a sufficient condition in many places, not a necessary one: a home or family can make you resident with far fewer days. See what is the 183-day rule? and check a year of trips with the 183-day calculator.
United Kingdom: the Statutory Residence Test
The UK's Statutory Residence Test (SRT) runs over the tax year from 6 April to 5 April in a fixed order:
- 1Automatic overseas tests — you are not UK resident if you spent fewer than 16 days in the UK (fewer than 46 if you were not UK resident in any of the previous 3 tax years), or you worked full-time abroad with fewer than 91 UK days and fewer than 31 days working more than 3 hours in the UK.
- 2Automatic UK tests — you are UK resident if you spent 183 days or more in the UK; if you had a UK home for a period of at least 91 consecutive days (at least 30 of them in the tax year), spent at least 30 days there, and had no overseas home or spent fewer than 30 days in the tax year at each one; or if you worked full-time in the UK for a 365-day period falling partly in the tax year.
- 3Sufficient ties test — if neither applies, your days are weighed against your ties: family, accommodation, work, more than 90 days in a previous year, and (for people leaving) spending more days in the UK than in any other country. The more ties, the fewer days it takes.
The full rule, flowchart and examples are on UK tax residency: the Statutory Residence Test; the ties are explained in what is the sufficient ties test?, and split-year treatment covers the year you arrive or leave. Try your own facts in the UK SRT calculator.
United States: citizenship, the green card and the Substantial Presence Test
The US taxes its citizens on worldwide income wherever they live. A non-citizen is a US tax resident under the green card test — holding lawful permanent resident status at any time in the calendar year — or the Substantial Presence Test: at least 31 days in the current year and 183 days over three years, counting all days this year, one-third of last year's and one-sixth of the year before. Details and exceptions are on the Substantial Presence Test, and the SPT calculator does the weighting for you. The green card test is the clearest case of immigration status creating tax residency — more on that in Step 4.
Resident in two countries: treaty tie-breakers
Because each country applies its own law, being tax resident in two countries in the same year is common — see can you be tax resident in two countries? Where a tax treaty exists, its residence article — modelled on Article 4(2) of the OECD Model Tax Convention — assigns you to one country for treaty purposes, testing in order:
- 1Permanent home — where you have a permanent home available to you.
- 2Centre of vital interests — if you have a home in both, where your personal and economic relations are closer.
- 3Habitual abode — if that cannot be decided, or you have a home in neither, where you habitually live.
- 4Nationality — if you have a habitual abode in both or neither.
- 5Mutual agreement — if you are a national of both or neither, the two tax authorities settle it.
The tie-breaker only allocates taxing rights under the treaty; it does not erase the other country's domestic residence, and you may still have to file there and claim treaty relief. A tax residency certificate is how you prove the result to a foreign payer or tax office.
Step 3: Domicile — your permanent legal home
Domicile is a common-law idea: the place you treat as your permanent home and intend to return to. You get a domicile of origin at birth — under UK law, your father's domicile when you were born if your parents were married, or your mother's if they were not or she was widowed before your birth — and can replace it with a domicile of choice only by actually moving and intending to stay indefinitely. You have one domicile at a time, and the old one persists until the new one is proved. That makes domicile sticky in a way tax residency is not.
UK: from domicile to residence on 6 April 2025
For decades the UK used domicile to tax foreigners lightly: a UK resident who was domiciled abroad could use the remittance basis and pay UK tax only on foreign income and gains brought into the UK. That ended on 6 April 2025. 2024-25 was the last year a remittance basis claim could be made, and from 2025-26 every UK resident is taxed on worldwide income and gains as they arise. Two residence-based rules replaced it:
- The 4-year FIG regime. Someone who becomes UK resident after at least 10 consecutive tax years of non-UK residence can claim relief on foreign income and gains for their first 4 tax years of UK residence. The claim is made year by year on the Self Assessment return, unused years cannot be carried forward, and nationality and domicile are irrelevant to eligibility.
- Long-term UK residence for inheritance tax. Non-UK assets are within UK inheritance tax if you are a long-term UK resident: UK resident for at least 10 of the previous 20 tax years (IHTA 1984 s 6A). After you leave, you stay in scope for a tail of 3 tax years if you were resident for 13 or fewer of the 20 years, rising by one year for each further resident year to a maximum of 10 tax years after 20 years of residence. Ten consecutive non-resident years resets the test.
Domicile has not vanished entirely: HMRC says it remains relevant for deaths and lifetime transfers before 6 April 2025, under certain inheritance tax treaties that use the common-law concept, and for some trust charges under transitional rules. There is also a transitional rule for people who are non-resident in 2025-26 and do not return: if they were neither UK domiciled nor deemed domiciled on 30 October 2024 they are not long-term UK residents, and if they were deemed domiciled on that date their status ends after 3 years of non-residence. For everyone arriving or leaving now, though, the number that matters is UK-resident tax years — which is decided by the SRT, which is decided by days and ties.
US states: domicile plus a day-count backstop
US federal income tax does not use domicile, but US states do. New York taxes you as a resident if New York is your domicile, or — even if it is not — if you maintain a permanent place of abode there for substantially all of the year and spend 184 days or more in the state, where any part of a day counts as a day. New York's own definition says you can have only one domicile, and that a New York domicile does not change until you show you have abandoned it and established a new one. See the New York 183-day rule.
Florida has no personal income tax and so no day test. What it offers is evidence: a sworn Declaration of Domicile under Fla. Stat. § 222.17, filed with the clerk of the circuit court, alongside homestead, a Florida driver license and voter registration. The declaration records intent; it does not change your domicile by itself. See establishing Florida domicile and how long it takes to establish residency.
Domicile and US estate tax
Domicile also decides US federal estate tax for non-citizens. The IRS treats a non-citizen as a US "resident" for estate tax only if they were domiciled in the US at death — having lived there, for even a brief period, with no definite present intention of later moving. The Form 706-NA instructions note that a person can be a US resident for income tax yet a nonresident for estate tax. A green card or the Substantial Presence Test settles income tax; it does not settle domicile.
Step 4: Residence permits — permission to live there
A residence permit answers an immigration question only: may you live in this country? Tax authorities generally ignore it, and immigration authorities generally ignore your tax residency. What permits do have is absence limits — usually measured as one continuous absence, not a yearly total — and when you breach one, the permit often ends automatically.
- Germany — 6 months. A residence title expires if you leave for a reason that is not temporary, or if you do not return within 6 months or a longer period set by the Ausländerbehörde before you go (§ 51(1) Nr. 6 and 7 AufenthG). The EU Blue Card has 12 months. See the German 6-month absence rule.
- Qatar — 6 months. A resident may not stay outside Qatar continuously for more than 6 months unless they obtain permission to return, before leaving or within a year of departure (Law No. 21 of 2015, Article 14). See the Qatar 6-month absence rule.
- EU long-term residents — 12 months. Under Article 9(1)(c) of Directive 2003/109/EC, status is lost after 12 consecutive months outside the EU, although Article 9(2) lets member states allow longer absences. The Court of Justice held in Case C-432/20 that any physical presence in the EU during that period, even a few days, prevents the loss. See the Dutch EU long-term resident rule.
- UK indefinite leave to remain — 2 years. ILR lapses automatically after a continuous absence of more than 2 years outside the UK and Islands; the way back is a Returning Resident visa. See the ILR 2-year lapse rule.
- US green card — about 1 year. USCIS uses an absence of more than a year as a general guide to abandonment, can find abandonment on shorter trips, and advises a reentry permit before any absence over a year. See the green card absence rule.
The exception: a green card is also a tax status
Under the IRS green card test you are a US tax resident for any calendar year in which you are a lawful permanent resident, whatever your days — and you stay one until you voluntarily abandon the status in writing to USCIS or it is terminated administratively or by a federal court. Living abroad for years with an unused green card can therefore leave you a US tax resident long after you consider yourself gone, subject only to any treaty tie-breaker.
Step 5: Where they conflict — three worked examples
These examples are simplified illustrations of how the rules interact, not advice on any particular case.
Example 1 — the UK leaver who assumes domicile still protects them
Sarah was born in the UK and has lived there all her life. In August 2026 she moves to Portugal, sells her London flat, and keeps a UK investment portfolio and close family in London. Under the old rules her advisers would have discussed whether and when she had acquired a Portuguese domicile of choice. Under the rules in force since 6 April 2025, that question no longer decides inheritance tax.
- Income tax: 2026-27 is a UK-resident year (possibly split under split-year treatment). From 2027-28 she is non-resident only if each year's SRT says so — with family and, if she keeps using a UK home, accommodation ties, return visits can quickly push her back over the line.
- Inheritance tax: she was UK resident for all 20 of the last 20 tax years, so she remains a long-term UK resident — and her worldwide assets remain within UK inheritance tax — until she has been non-resident for 10 consecutive tax years.
- The lesson: what used to be a debate about intent is now a count of UK-resident tax years. Every year she drifts back into UK residence restarts the tail, so the SRT day count matters for estate planning as well as income tax.
Example 2 — the New York to Florida mover audited on days
David sells his business, buys a home in Palm Beach in February 2026, files a Declaration of Domicile, swaps his driver license and registers to vote in Florida. He keeps his Manhattan apartment "for visits". New York audits 2026 and rebuilds his calendar from card statements, phone records and travel data.
- If the audit finds 190 New York days: his domicile may well have moved to Florida, but with a permanent place of abode and 184 days or more in the state he is a New York statutory resident for 2026 and taxed on worldwide income as a resident anyway. Any part of a day counts, so waking up in Manhattan before a morning flight to Florida makes it a New York day; only presence solely to board a flight or to travel through the state is disregarded.
- If the audit finds 160 days: the statutory test fails, and New York must instead argue he never changed domicile — weighing his homes, business ties, family and where his most treasured possessions are. The Florida paperwork helps; the bigger, more personal home staying in Manhattan hurts.
- The lesson: domicile and the day count are separate tests and he must pass both. The days are the part he can prove objectively — if he logged them at the time.
Example 3 — the permit holder who is tax resident elsewhere and loses the permit
Priya, an Indian national, holds a German residence permit (Aufenthaltserlaubnis) for work and rents a flat in Munich. Her employer sends her to Bengaluru for 8 months to set up an office. She keeps the Munich flat and assumes that, since she still pays German tax, her German status is safe.
- India: with 182 days or more in India in the Indian tax year (1 April–31 March) she becomes Indian tax resident — see India's 182-day rule.
- Germany (tax): keeping a dwelling she can use means she still has a German residence for tax purposes, so she can remain German tax resident as well — see German tax residency. She is a dual resident, and the residence article of the Germany–India tax treaty decides which country has primary taxing rights — a tie-breaker that, like the OECD Model, looks first at where she has a permanent home available.
- Germany (immigration): none of that helps the permit. Unless the Ausländerbehörde set a longer period before she left, her residence title expired automatically once she had been away more than 6 months (§ 51(1) Nr. 7 AufenthG) — while she was still paying German tax.
- The lesson: tax residency and permit status move independently. Ask the immigration authority for a longer absence period before a long trip, and track the permit's absence clock separately from any tax day count.
Step 6: Keeping all three in order
The three tests share one input: where you were on each day. Tax residency counts days in a tax year, a former state counts days against its statutory test, and each permit counts the length of your longest absence. A single log, kept as you travel, answers all of them:
- 1List every country (and, for US movers, every state) you hold a tax filing, permit or domicile connection with.
- 2For each, note the test and the window: tax year and day threshold, statutory residence test, or maximum continuous absence.
- 3Record every night's location as it happens, with arrival and departure days counted the way each authority counts them.
- 4Before any long trip, check the permit's absence limit and whether you need a re-entry permit or an extended period approved in advance.
- 5At year end, run each tax residency test, check for dual residence and the treaty tie-breaker, and keep the evidence for audits that may come years later.
The Bounded app records the days automatically, keeps separate counters for tax thresholds and permit absence limits, and warns before you cross one. For a quick check of past years, use the 183-day calculator, the UK SRT calculator or the Substantial Presence Test calculator. This guide describes the rules; it is not tax or immigration advice, and cross-border cases with significant assets deserve a qualified adviser in each country.
Diese Regeln verfolgen Sie automatischin
Bounded
- Erfasst Ihre Tage in jedem Land automatisch
- Warnt Sie, bevor Sie das Limit überschreiten
- Erfasst Grenzübertrittstage in beiden Ländern
- Läuft parallel zu Ihren anderen Visa-, Steuer- und Aufenthaltsregeln
Häufige Fragen
Tax residency is a yearly status that decides where you are taxed on your worldwide income, and it is mostly driven by day counts and ties such as a home, family or work. Domicile is your permanent legal home — the place you intend to live indefinitely and return to — and it changes only when you both move and intend to stay. You can be tax resident in a country you are not domiciled in, and you can keep a domicile in a place where you spent very few days that year.
Yes. Each country applies its own rules, so you can meet both — for example 183 days in one and a permanent home in the other. Where the two countries have a tax treaty, its residence article (Article 4 of the OECD Model) breaks the tie by looking in order at where you have a permanent home, your centre of vital interests, your habitual abode and your nationality, and finally by agreement between the tax authorities.
Generally no. Under the common-law concept used in the UK and US states, you have exactly one domicile at a time, and you keep the old one until you have both moved and formed the intention to stay in the new place. New York's own definition says you can only have one domicile, and that your New York domicile does not change until you show you have abandoned it and established a new one elsewhere.
Usually not by itself. Most countries decide tax residency from days, a home or your centre of interests, not from immigration status, so a permit holder who lives abroad may not be tax resident and a visitor who stays long enough may be. The main exception is the United States: a green card holder is a US tax resident for every year in which they hold that status, regardless of days, until the status is formally given up or terminated.
Much less. From 6 April 2025 the remittance basis for non-domiciled UK residents was abolished and replaced by a 4-year foreign income and gains regime for people arriving after 10 consecutive tax years of non-residence. Inheritance tax on worldwide assets now depends on being a long-term UK resident — UK resident for at least 10 of the previous 20 tax years — rather than on domicile. Domicile still matters for events before 6 April 2025, under some inheritance tax treaties and for certain trust transitional rules.
Under the long-term residence test you stay in scope for a 'tail' after leaving: 3 tax years if you were UK resident for 13 or fewer of the last 20 years, rising by one year for each extra resident year to a maximum of 10 tax years after 20 years of residence. Ten consecutive years of non-residence resets the test completely.
Florida has no personal income tax and no day test of its own. The day count that matters is your former state's: New York, for example, treats you as a resident if you keep a permanent place of abode there and spend 184 days or more in the state, with any part of a day counting as a day — regardless of your Florida domicile.
Nothing automatically on the tax side — but your physical absence can end the permit. A German residence permit expires if you are away more than 6 months without a longer period set by the immigration office beforehand, EU long-term resident status is lost after 12 consecutive months outside the EU unless the member state allows longer absences, and UK indefinite leave to remain lapses after more than 2 continuous years outside the UK. Meanwhile, keeping a home in the country can leave you tax resident there even after the permit has gone.
Quellen
- HMRC — RDR3: Statutory Residence Test (SRT) guidance
- Finance Act 2013, Schedule 45, paragraph 8 — second automatic UK test (UK home)
- HMRC — Residence and FIG Regime Manual, RFIG41000 (FIG regime introduction)
- GOV.UK — Check if you can claim the 4-year foreign income and gains regime
- GOV.UK — Inheritance Tax if you're a long-term UK resident
- HMRC — Inheritance Tax Manual, IHTM47001 (long-term UK residence test and when domicile remains relevant)
- Finance Act 2025, section 44 — IHTA 1984 s 6A (long-term UK resident)
- IRS — Substantial Presence Test
- IRS — U.S. tax residency: Green card test
- IRS — Instructions for Form 706-NA (domicile for estate tax)
- 26 CFR 20.0-1(b)(1) — definition of resident (domicile) for US estate tax
- HMRC — Residence, Domicile and Remittance Basis Manual, RDRM22100 (domicile of origin)
- NY Dept. of Taxation and Finance — Income tax definitions (domicile, permanent place of abode, resident)
- 20 NYCRR 105.20 — New York resident individual; rules for counting days (c)
- Florida Legislature — Florida Statutes online (§ 222.17, Declaration of Domicile)
- OECD — Model Tax Convention on Income and on Capital, Article 4 (Resident)
- Income Tax Department (India) — India–Germany DTAA, Article 4 (Resident)
- EUR-Lex — Council Directive 2003/109/EC (Art. 4(3), Art. 9)
- CJEU — Case C-432/20, ZK (Landeshauptmann von Wien), judgment of 20 January 2022
- Al Meezan (Qatar Legal Portal) — Law No. 21 of 2015 on the entry, exit and residence of expatriates, Article 14 (Arabic text)
- Immigration (Leave to Enter and Remain) Order 2000, Article 13 — lapsing of leave
- Aufenthaltsgesetz § 51 — expiry of residence titles (Germany)
- USCIS — International travel as a permanent resident
Nur zur Information. Dieser Leitfaden fasst öffentlich zugängliche Regeln allgemein verständlich zusammen und ist keine Steuer-, Rechts- oder Einwanderungsberatung. Regeln ändern sich und hängen von Ihren persönlichen Umständen ab — prüfen Sie vor jeder Entscheidung immer die oben genannten offiziellen Quellen und wenden Sie sich an eine qualifizierte Fachperson.