United Kingdom: how residence and citizenship work

Residence tests, reporting duties, social security, living base and citizenship for United Kingdom, with the official source for each.

Short answer

The UK decides tax residence for each tax year with the Statutory Residence Test, which combines automatic overseas tests, automatic UK tests and a sufficient ties test, counting days present at midnight. From 6 April 2025 the remittance basis was abolished and UK residents are taxed on the arising basis, while a person in one of their first 4 years of UK residence after at least 10 consecutive tax years of non-UK residence can claim the 4-year foreign income and gains (FIG) regime.

Key facts

Tax basisResidence-based
Tax year6 April to 5 April
Taxes citizens abroadNot as a general rule
Residence tests recorded3
RegionEurope

How United Kingdom decides tax residence

Each test is recorded separately with its own ID. Meeting or missing one test does not settle residence on its own.

GB-RES-01Day countNot professionally reviewed

Statutory Residence Test: automatic overseas tests

These tests are checked first. A person who was UK resident in one or more of the 3 previous tax years meets the first test with fewer than 16 days in the UK; a person who was UK resident in none of those years meets the second test with fewer than 46 days. A third test covers full-time work overseas with fewer than 91 days in the UK and UK work of more than 3 hours on fewer than 31 days. Meeting one of these tests settles the year as not UK resident under the SRT.

Source: RDR3: Statutory Residence Test (SRT) notesEffective: Tax years from 6 April 2013Day method: Present at midnightChecked: November 8, 2026
GB-RES-02Day count183 days ยท Tax yearNot professionally reviewed

Statutory Residence Test: automatic UK tests

If no automatic overseas test is met, a person is UK resident if they spend 183 days or more in the UK in the tax year. Two other automatic UK tests look at having a UK home (with conditions on a 91-day period and at least 30 days of presence there) and at full-time work in the UK over a 365-day period. Days are counted when the person is in the UK at the end of the day (midnight), subject to the deeming rule, transit days and exceptional circumstances.

Source: RFIG20710 - Statutory Residence Test (SRT): Days spent in the UK: Meaning of a day spent in the UKEffective: Tax years from 6 April 2013Day method: Present at midnightChecked: November 8, 2026
GB-RES-03Ties testNot professionally reviewed

Statutory Residence Test: sufficient ties test

If no automatic test decides the year, residence depends on UK days combined with UK ties: family, accommodation, work and 90-day ties, plus a country tie for people who were UK resident in one of the 3 previous years. The more ties a person has, the fewer UK days it takes to be resident. HMRC sets out the day bands and tie counts in two tables, one for people previously UK resident and one for people who were not.

Source: RDR3: Statutory Residence Test (SRT) notesEffective: Tax years from 6 April 2013Checked: November 8, 2026

Arriving, leaving and part years

A tax year in which a person is UK resident can be split into a UK part and an overseas part. HMRC lists split year cases 1 to 3 for actual or deemed departures and cases 4 to 8 for actual or deemed arrivals, with priority rules where more than one case applies (relates to GB-RES-01 to GB-RES-03).

Reporting duties to check

  • FIG regime claim. FIG relief must be claimed for each tax year it is wanted, for up to 4 consecutive tax years from the year of arrival. HMRC states that a claim removes the personal allowance and the capital gains tax annual exempt amount for that year, among other reliefs and allowances. Source
  • Remittances of income and gains from remittance basis years. HMRC states that foreign income and gains from years when the remittance basis was claimed remain taxable in the year they are brought to the UK, and that this continues for previous remittance basis users after 6 April 2025. Source

Social security

National Insurance usually follows the country where a person works. For work abroad, whether UK National Insurance still applies depends on the country, any social security agreement with the UK and the length and type of the work; a certificate of coverage may be needed.

Living base

People who are not British citizens generally need immigration permission to live in the UK, through visa families such as work, study and family routes, or settled status. Holding a visa or settlement does not decide UK tax residence; the Statutory Residence Test does.

How visas, permits and tax residence differ

Citizenship

Naturalisation for people with indefinite leave to remain or settled status generally requires at least 5 years living in the UK and holding that status for 12 months, with no more than 450 days outside the UK in the 5 years and 90 days in the last 12 months. GOV.UK states that dual citizenship is allowed in the UK. Check the current rules for how long each visa route takes to reach settlement.

Read the citizenship guide

Questions to take to a professional

  1. Which Statutory Residence Test decides my status for each tax year, and how should my days and ties be counted?
  2. Does a split year case apply to my year of arrival or departure, and which case takes priority?
  3. Do I meet the condition of at least 10 consecutive tax years of non-UK residence for the FIG regime, and what allowances would a claim remove?
  4. How are funds from years when I used the remittance basis treated if I bring them to the UK now?
  5. If another country also treats me as resident, how does the relevant tax treaty tie-breaker apply?
  6. Which National Insurance rules or social security agreement apply to my work pattern?

Official authorities

Sources

Guides that mention United Kingdom

Other countries in Europe

Countries covered
United Kingdom
Sources
8 sources listed above
Tax year
Current rules as checked
Review
Not professionally reviewed
Sources checked November 8, 2026