Concept
UK tax residence is a statutory status fixed for each tax year. It is not immigration residence, domicile, nationality, bank address or where a client says the family base is. The UK tax year runs from 6 April to 5 April, and the Statutory Residence Test applies separately to each year. Residence is the first gate to UK taxation of worldwide income and gains, to FIG and OWR eligibility, and to long-term-resident inheritance tax counting.
The test
The SRT runs in a fixed order: automatic overseas tests first, then automatic UK tests, then the sufficient ties test. HMRC's RDR3 guidance states that 183 or more UK days make the individual UK resident without considering other tests. Below 183 days the analysis works through the overseas tests, the UK tests and ties — it cannot start from a convenient conclusion and back-fit the day count.
Automatic overseas tests
A prior UK resident with fewer than 16 UK days may be non-resident; a person not UK resident in any of the previous 3 tax years has a higher day threshold; full-time work abroad has its own conditions. Meeting one ends the analysis as non-resident.
Automatic UK tests
183 or more UK days, an only or main home in the UK for a qualifying period, or full-time UK work can each make the individual UK resident without reaching the ties test.
Sufficient ties
Family, accommodation, work, 90-day and (for leavers) country ties combine with the day count on a sliding scale. Fewer days are needed for residence as the number of ties rises.
Scope and facts
The test reaches mobile executives, founders, retired HNWI, students, spouses, children and people with fragmented work patterns. The relevant facts are not only midnights. They include UK workdays, homes, family, available accommodation, prior residence, the 90-day history and the country tie for leavers. A travelling spouse can create a family tie even if another country is treated as the main base.
Split year and temporary non-residence
Split-year treatment is not a separate residence status. RDR3 explains that a person can be UK resident for the year but taxed as if it is split into UK and overseas parts where a statutory case applies. Temporary non-residence has its own rules, and HMRC's RFIG21520 explains residence periods and treaty non-residence for that purpose. An investor leaving in September usually needs a split-year analysis, not a simple whole-year non-resident conclusion.
Consequences and treaty position
Residence opens the door to UK tax on worldwide income and gains, FIG eligibility, OWR, Self Assessment, trust and company anti-avoidance, and IHT residence counting. Non-residence normally removes foreign income from UK income tax, but UK-source income and UK property may remain in charge. Dual domestic residence is common: HMRC's dual residence manual (INTM154020) states that treaty non-residence can limit UK liability but does not override the fact of UK residence for domestic filing.
Evidence
Residence evidence includes travel records, passport stamps, flight logs, accommodation agreements, work calendars, employment contracts, school records, spouse and child residence, board minutes and contemporaneous day-count schedules. For treaty residence the file must support permanent home, centre of vital interests, habitual abode and nationality analysis. An HMRC enquiry tests the documents, not the memory.
Planning
Residence planning is legal modelling before conduct, not after-the-fact reconstruction. The client should model arrival and departure years, split-year cases, UK workdays, accommodation, family movements and treaty position before executing a relocation, a sale, a trust distribution or a company governance change.
Q&A
Does a visa make someone UK tax resident
No. Immigration permission is not the SRT. It may explain facts, but the tax result comes from day count, work, homes and ties.
Is fewer than 183 days enough to be non-resident
No. The 183-day rule is only one automatic UK test. Sufficient ties can produce UK residence at a lower day count, and an automatic UK test on home or work can apply independently.
Can a person be UK resident and treaty resident elsewhere
Yes. Dual domestic residence is common. A treaty may allocate residence for treaty purposes and limit UK taxing rights, while UK domestic filing duties remain.
Is split year automatic
No. The individual must meet a statutory split-year case. If no case applies, the individual is normally UK resident for the whole tax year.
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