UK Tax Residency Test
Understand the UK Statutory Residence Test (SRT) and reduce accidental residency risk
Quick answer
The UK uses the Statutory Residence Test (SRT) to determine tax residency. It is not a simple 183-day rule.
The SRT is a three-part test: (1) Automatic Overseas, (2) Automatic UK, then (3) a ties-based test if neither applies.
This page is a practical overview. Always validate your specific case with official guidance or a qualified advisor.
At a glance: how to think about the SRT
Automatic Overseas
If you meet an overseas condition (often involving very low UK days and/or full-time work abroad), you're usually non-resident.
Automatic UK
If you meet a UK condition (e.g., 183+ UK days, only home in UK, or full-time UK work), you're usually resident.
Sufficient Ties
If neither automatic test applies, residency depends on how many UK ties you have and how many UK days you spend.
The exact thresholds depend on your prior UK residence history and your tie profile.
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Check my exposure →UK Statutory Residence Test explained
The SRT was introduced to bring structure to UK residence decisions. In practice it still requires careful tracking of UK midnights, work patterns, and ties such as family and accommodation.
UK tax year (important)
The UK tax year runs from 6 April to 5 April. Many day thresholds are assessed within that tax year, not the calendar year.
How UK days are counted (typical)
A UK day is typically counted when you are in the UK at midnight. Some exceptions can apply (e.g. limited transit situations), but midnight is the usual anchor rule.
Key day thresholds (common examples)
16 — 16 days or fewer — can be automatically non-resident in some cases (depends on recent residence history).
46 — 46 days or fewer — can be automatically non-resident in some cases (depends on recent residence history).
91 — 91 days or fewer — may be non-resident depending on ties and other conditions.
183 — 183 days or more — commonly triggers automatic UK tax residence.
The SRT uses multiple thresholds depending on whether you were UK-resident in previous years and how many ties you have.
UK ties that commonly count
- 👨👩👧Family tie — Spouse/civil partner or minor children in the UK
- 🏠Accommodation tie — Accessible UK accommodation available for a sustained period
- 💼Work tie — Working in the UK for a minimum number of days
- 📅90-day tie — Significant UK presence in prior years
- 🌙Country tie — The UK is where you spend the most midnights compared with any single other country
Practical examples
UK visits + family in UK
Even with moderate UK days, a family tie can push you into the ties-based SRT territory where day counts matter more.
UK accommodation available
If you keep a UK home available, accommodation tie questions become central — and day thresholds can bite faster.
Frequent UK work days
Working patterns can trigger SRT considerations even if you try to stay below big headline thresholds.
Split-year treatment (overview)
If you become UK resident or leave the UK part way through a tax year, you may qualify for split-year treatment. This can mean you are treated as UK resident for only part of the year, depending on the relevant conditions.
Split-year rules are detailed. If this is relevant, it's worth checking official guidance or getting advice.
Who needs to track UK days?
- 🇬🇧UK nationals living abroad but visiting family
- 💼People working partially in the UK
- 🏢Business owners with UK operations
- 🏠Property owners splitting time between the UK and abroad
- ✈️Frequent travellers transiting through the UK
FAQs
Is the UK tax residency test just the 183-day rule?
No. The UK SRT uses multiple day thresholds and a ties-based analysis. Spending 183+ UK days is one route, but it's not the whole test.
How are UK days counted?
Typically, a UK day is counted if you are in the UK at midnight. Some exceptions can apply, but midnight is the usual counting anchor.
What are the three parts of the SRT?
Automatic Overseas tests, Automatic UK tests, then a Sufficient Ties test if neither automatic test applies.
Can I be tax resident in the UK and another country in the same year?
Yes. Dual residency can occur. Treaties may determine treaty residency, and the UK also has split-year rules in some circumstances.
What is split-year treatment?
It may apply when your residence status changes part way through a tax year, treating you as UK resident for only part of the year (if the conditions are met).
Not tax or legal advice. If it matters financially, validate your position with a professional.
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