UK Statutory Residence Test: Complete Guide for 2026

Overview of the Statutory Residence Test

The UK Statutory Residence Test (SRT), introduced by Schedule 45 of the Finance Act 2013 and operative from 6 April 2013, replaced the old common-law residence test that had relied on HMRC guidance and case law dating back to the nineteenth century. For the first time, Parliament gave UK residence a statutory definition that could be applied with reasonable certainty.

The SRT operates in three sequential steps:

1. Automatic Overseas Tests — if met, the individual is non-resident regardless of anything else
2. Automatic UK Tests — if met, the individual is UK resident regardless of the overseas tests (unless overridden by a split-year claim)
3. Sufficient Ties Test — for those who fall into neither automatic category, residence is determined by combining the number of days spent in the UK with the number of qualifying ties to the UK

Understanding the SRT requires not just knowing the tests but understanding the precise definitions of key terms: what counts as a "day" in the UK, what constitutes a "home" for the purposes of the home tie, and how the "working sufficiently" threshold operates.

Part One: The Automatic Overseas Tests

There are three automatic overseas tests. Meeting any single one makes the individual non-resident for that tax year.

AOT 1: The Very Few Days Test

An individual is automatically non-resident if they spend fewer than 16 days in the UK in the tax year. This applies to individuals who were UK resident in one or more of the three preceding tax years. For those who were not resident in any of the three preceding years, the threshold is 46 days (see AOT 3 below).

AOT 2: Full-Time Overseas Work Test

An individual is automatically non-resident if they work overseas full-time for the full tax year, provided they spend fewer than 91 days in the UK and fewer than 31 days working in the UK.

"Full-time overseas work" is defined as working an average of 35 hours per week overseas throughout the year, with no significant break exceeding 31 days. The calculation uses a specific formula set out in paragraphs 14-18 of Schedule 45, involving net overseas hours divided by qualifying days.

AOT 3: The Deceased Test

The third automatic overseas test applies only in the tax year of death and is therefore of limited practical relevance for planning.

For practical purposes, most individuals rely on AOT 1 (fewer than 16 days for prior UK residents) or AOT 2 (full-time overseas work). The 16-day threshold is unforgiving — a single additional day can push an individual out of the automatic overseas category and into the sufficient ties test with potentially significant consequences.

Part Two: The Automatic UK Tests

If none of the automatic overseas tests are met, the individual must check the five automatic UK tests. Meeting any one makes them UK resident.

AUT 1: The 183-Day Test

Spending 183 or more days in the UK in a tax year makes an individual automatically UK resident. This test is straightforward and rarely the relevant threshold for planning purposes — those at risk of meeting it will usually be caught by the sufficient ties test at a much lower day count.

AUT 2: The Only Home Test

An individual is automatically UK resident if the UK is their only home, or if they have a UK home and no overseas home, and spend at least 30 days at the UK home in the year. A "home" is defined as a place where the individual lives that has sufficient characteristics of a home (stability, regularity of use), distinguished from commercial accommodation.

AUT 3: Full-Time Work in the UK

An individual is automatically UK resident if they work full-time in the UK for any period of 365 days falling within the tax year, with no significant break. The 35 hours per week average applies on the same basis as AOT 2 but in reverse.

AUT 4 and AUT 5

AUT 4 (death in a year of UK residence) and AUT 5 (UK birth and UK domicile with specific circumstances) are narrow provisions relevant only in specific factual situations.

Part Three: The Sufficient Ties Test

The sufficient ties test applies to individuals who fail to meet any automatic overseas test and fail to meet any automatic UK test. Their residence status is determined by the combination of days spent in the UK and the number of "ties" they have to the UK.

The Five Qualifying Ties

Family tie: The individual has a spouse, civil partner, or minor child resident in the UK. Children at boarding school are treated as UK resident. This is often the most difficult tie to break for people with families.

Accommodation tie: The individual has a place to live in the UK that is available for at least 91 consecutive days in the year, and uses it for at least one night. A second home, a rented flat, or even a relative's home where a room is kept available can constitute an accommodation tie.

Work tie: The individual works in the UK for at least 40 days in the year (a day being one where more than 3 hours of work is performed).

90-day tie: The individual spent more than 90 days in the UK in either or both of the two preceding tax years.

Country tie (leavers only): The individual spent more time in the UK than in any other single country in the tax year. This tie applies only to those who were UK resident in one or more of the three preceding tax years.

Day Count Thresholds by Ties Count

For individuals who were UK resident in at least one of the preceding three tax years ("leavers"):

UK Days in Tax Year	Ties Required for UK Residence
Fewer than 16	N/A (automatic overseas — AOT 1)
16–45	4 or more ties
46–90	3 or more ties
91–120	2 or more ties
121–182	1 or more ties
183+	Automatically UK resident (AUT 1)

For individuals who were not UK resident in any of the preceding three tax years ("arrivers"):

UK Days in Tax Year	Ties Required for UK Residence
Fewer than 46	N/A (automatic overseas — AOT 3 equivalent)
46–90	4 or more ties
91–120	3 or more ties
121–182	2 or more ties
183+	Automatically UK resident (AUT 1)

Note that arrivers have no country tie — only four ties are relevant to them.

The Midnight Rule

A day counts as a UK day for SRT purposes if the individual is present in the UK at midnight at the end of that day. Time of arrival and departure within the day is irrelevant — what matters is midnight presence.

There are two exceptions to the midnight rule:

1. Deeming rule for leavers: If an individual has three or more UK ties (for leavers) or four or more UK ties (in certain scenarios), days when the individual is in the UK but departs before midnight are nonetheless counted as UK days. This "deeming" provision prevents abuse of the midnight rule by structured same-day trips.

2. Transit days: A day spent in the UK purely in transit (the individual arrives and departs without leaving the airport/port) does not count as a UK day, provided the individual does not perform any work in the UK on that day.

The Arrivals vs Leavers Distinction

The SRT treats arriving individuals (those without recent UK residence) more generously than those who are leaving the UK. The country tie, which is often the swing tie that tips a marginal case into UK residence, applies only to leavers. An individual arriving in the UK for the first time, who has no family, accommodation, or work ties, and who has not spent more than 90 days in the UK in either of the previous two years, could spend up to 182 days in the UK without becoming resident — provided they have no work tie.

This asymmetry reflects a policy judgment that it is harder to sever UK residence than to avoid establishing it in the first place.

Split-Year Treatment Overview

When an individual either arrives in or departs from the UK part-way through a tax year, split-year treatment may apply. Split-year is covered in detail in a dedicated article, but the framework is as follows.

There are eight cases of split-year treatment. Cases 1, 2, and 3 apply to individuals who leave the UK. Cases 4 through 8 apply to individuals who arrive in the UK. Meeting the conditions for any case splits the tax year into a UK part (in which the individual is treated as UK resident and taxed accordingly) and an overseas part (in which the individual is treated as non-resident for income tax and CGT purposes).

Split-year treatment does not affect the SRT residence determination itself — it is a consequence that follows once residence status is determined under the SRT. An individual who is UK resident for a full year under the SRT but who also meets a split-year case will still be UK resident, but will have a split year for income tax and CGT purposes.

Common Mistakes in Applying the SRT

Miscounting days: Many individuals fail to account for days that are "deemed" UK days under the transit provisions or the deeming rule. A day on which the individual is in the UK at any point, performs work, and leaves before midnight may still count if the tie threshold is exceeded.

Ignoring the work tie: Working from a laptop for more than 3 hours while in the UK counts as a working day. A full-year resident-abroad who visits the UK frequently for client meetings can inadvertently accumulate a work tie within a matter of weeks.

Misidentifying homes: HMRC guidance makes clear that a "home" for SRT purposes is not determined by ownership or legal interest. A room kept in a parent's house, reliably available and used with some regularity, can constitute a home. The threshold is lower than most people assume.

Failing to claim split-year: Split-year treatment does not apply automatically. It must be claimed on the self-assessment return for the relevant year. A departure in October 2025 that qualifies for split-year treatment under Case 1 must be claimed on the 2025/26 return — failure to do so means the entire year is treated as a full residence year.

HPT Group provides pre-departure SRT reviews for individuals considering leaving the UK tax system, and arrival SRT analysis for high-net-worth individuals establishing UK residence. Ensuring clean departure — particularly around the country tie and the accommodation tie — is one of the most common planning failures we help clients correct retrospectively. For a structured review of your residence position, visit our international tax services or book a consultation.