UK Statutory Residence Test: How Many Days Can You Spend in the UK?
The UK Statutory Residence Test (SRT) determines whether you are a UK tax resident for a given tax year. There is no single day limit. Your threshold depends on your ties to the UK, your residency history, and whether you work here. It can be as low as 16 days or as high as 182.
The SRT has been in force since 6 April 2013 under Schedule 45 of the Finance Act 2013. It replaced the old case-law approach that left residency status open to interpretation. The SRT is mechanical. You either meet the criteria or you don't.
Quick summary: The SRT is a three-part test. First, check the automatic overseas tests (non-resident if under 16, 46, or 91 days depending on your situation). Then check the automatic UK tests (resident if 183+ days). If neither applies, the sufficient ties test determines your status based on a combination of days and connections to the UK.
How does the UK Statutory Residence Test work?
The SRT runs in a specific order, according to HMRC's RDR3 guidance. You work through the tests from top to bottom. The first one that gives you a definitive answer is the one that applies.
Step 1: Automatic overseas tests. If you meet any of these, you are non-resident. Stop here.
Step 2: Automatic UK tests. If you meet any of these, you are UK resident. Stop here.
Step 3: Sufficient ties test. If neither automatic test gives a clear answer, this test uses the number of days you spent in the UK combined with the number of ties you have.
Each tax year is assessed separately. The UK tax year runs from 6 April to 5 April, not January to December.
What are the automatic overseas tests?
These tests confirm non-residence. If you pass any one of them, you are not UK tax resident for that year.
Test 1: The 16-day test. If you were UK resident in one or more of the previous 3 tax years, and you spend fewer than 16 days in the UK this year, you are non-resident. (HMRC RDR3)
Test 2: The 46-day test. If you were not UK resident in any of the previous 3 tax years, and you spend fewer than 46 days in the UK this year, you are non-resident. (HMRC RDR3)
Test 3: The full-time overseas work test. If you work full-time overseas with no significant break, spend fewer than 91 days in the UK, and work 3 or more hours in the UK on fewer than 31 days, you are non-resident. (HMRC RDR3)
The key detail: your history matters. Someone who left the UK last year gets a 16-day limit. Someone who hasn't been UK resident for 3 years gets 46 days. That difference catches people off guard.
What are the automatic UK tests?
These tests confirm residence. If you meet any one of them, you are UK tax resident.
Test 1: The 183-day test. Spend 183 days or more in the UK in the tax year. That's it. No ties analysis needed, no other factors. You're resident. (HMRC RDR3, Finance Act 2013)
Test 2: The UK home test. You have a home in the UK available for at least 91 consecutive days (with at least 30 falling in the tax year), you are present in it on at least 30 days in the tax year, and you either have no overseas home or spend fewer than 30 days in your overseas home. (HMRC RDR3)
Test 3: The full-time UK work test. You work full-time in the UK over any 365-day period, with at least one day falling in the relevant tax year. (HMRC RDR3)
How does the sufficient ties test work?
If no automatic test gives a clear answer, the ties test applies. It combines two factors: how many days you spent in the UK and how many ties you have to the UK.
The more ties you have, the fewer days it takes to become resident.
If you were UK resident in any of the prior 3 tax years:
| UK Days | Ties Needed to Be Resident | |---------|---------------------------| | 16-45 | 4 ties | | 46-90 | 3 ties | | 91-120 | 2 ties | | 121+ | 1 tie |
If you were NOT UK resident in any of the prior 3 tax years:
| UK Days | Ties Needed to Be Resident | |---------|---------------------------| | 46-90 | All 4 ties | | 91-120 | 3 ties | | 121+ | 2 ties |
(Source: HMRC RDR3, confirmed by Saffery and KPMG SRT flowchart)
If you were a prior resident and you spend 121 days in the UK with just 1 tie, you are UK tax resident. That's the scenario that surprises people most.
What counts as a "tie" to the UK?
There are five ties. The fifth one (country tie) only applies if you were UK resident in any of the prior 3 tax years.
1. Family tie. Your spouse, civil partner, or minor child is UK resident. (HMRC RDR3)
2. Accommodation tie. You have a place to stay in the UK that is available to you for at least 91 days in the tax year, and you use it for at least 1 night. This includes a room at a relative's house. (HMRC RDR3)
3. Work tie. You work in the UK for 3 or more hours on at least 40 days in the tax year. (HMRC RDR3)
4. 90-day tie. You spent 90 or more days in the UK in either or both of the 2 previous tax years. (HMRC RDR3)
5. Country tie (prior residents only). You were present in the UK at midnight on more days than in any other single country. (HMRC RDR3)
The accommodation tie is the one that catches expats most often. If you left the UK but your old flat is still available to you (even empty, even owned by a family member), and you stay there for just 1 night on a visit, the tie is active.
How does the UK count days for the SRT?
A day in the UK means you are present in the UK at midnight (the end of that day), according to HMRC RDR3 and Schedule 45 of the Finance Act 2013.
If you arrive at 8pm and leave the next morning at 6am, that arrival day counts (you were present at midnight). The departure day does not count (you left before midnight).
The deeming rule. There is an exception that can count days even when you left before midnight. If you have 3 or more UK ties, you were present in the UK on more than 30 days in the year without being there at midnight, and you were UK resident in at least 1 of the prior 3 tax years, then all days beyond the first 30 are treated as UK days. (HMRC RDR3)
This matters for frequent visitors who fly in for meetings and leave the same evening. After 30 such day trips, every additional one counts toward your total.
Exceptional circumstances. Up to 60 days can be excluded from your count if you were in the UK due to circumstances beyond your control. HMRC gives examples like sudden illness, natural disasters, or civil unrest. This exclusion is narrow and discretionary. Do not plan around it. (HMRC RDR3)
What changed in April 2025?
The SRT itself has not changed. The day thresholds and ties are the same as they have been since 2013.
What changed is the non-domicile regime. From 6 April 2025, the old non-dom rules ended and were replaced by a new Foreign Income and Gains (FIG) regime that is based entirely on tax residence status, according to the Finance Act 2025 Section 44.
This makes the SRT more important than before. Previously, someone could be UK tax resident but claim non-dom status to limit their UK tax exposure on foreign income. That option no longer exists for most people. Your SRT result now directly determines how your worldwide income is taxed in the UK.
If you split time between the UK and another country, getting your SRT analysis right is no longer optional. It is the single most important factor in your UK tax position.
How do I track my UK days accurately?
The SRT requires you to know exactly how many days you spent in the UK during a tax year that runs 6 April to 5 April. It also requires you to know your day counts for the previous 2-3 tax years (for the 90-day tie and the automatic overseas tests).
I built Jetseen because tracking days across countries on a spreadsheet failed me for six months. The UK SRT is one of 12 rule engines built into the app. It counts your UK days against the specific thresholds that apply to your situation, based on your ties and history.
Whatever tool you use, make sure it accounts for the midnight rule and tracks by UK tax year, not calendar year. Most generic trackers use calendar years, which makes them useless for the SRT.
FAQ
How many days can I spend in the UK without becoming tax resident? It depends on your history and ties. If you were UK resident in the prior 3 years, as few as 16 days could make you resident (with 4 ties). If you were not previously resident and have no ties, you can spend up to 182 days. The 183-day automatic test is the only absolute threshold.
Does the day I arrive in the UK count? Only if you are in the UK at midnight. If you arrive at 10pm and stay overnight, that day counts. If you arrive and leave before midnight, it does not count (unless the deeming rule applies).
What is the UK tax year? 6 April to 5 April. Not the calendar year. All SRT day counts use this period.
Can I be UK tax resident for part of a year? Yes. Split year treatment applies in certain cases when you arrive in or leave the UK mid-year. This is a separate analysis under Part 3 of Schedule 45.
Does the SRT apply to all UK taxes? It applies to income tax, capital gains tax, and is relevant for inheritance tax and corporation tax where individual residence status matters. (Finance Act 2013, Schedule 45)
Sources
- HMRC RDR3 — Statutory Residence Test Guidance
https://www.gov.uk/government/publications/rdr3-statutory-residence-test-srt/guidance-note-for-statutory-residence-test-srt-rdr3 Official HMRC guidance on how the SRT works, including all day thresholds, ties definitions, and counting rules.
- Finance Act 2013, Schedule 45 — Statutory Residence Test
https://www.legislation.gov.uk/ukpga/2013/29/schedule/45 The primary legislation that established the SRT.
- GOV.UK — UK Tax Residence Guidance Collection
https://www.gov.uk/government/collections/uk-tax-residence-guidance HMRC's collected guidance on residence, including the SRT and related topics.
- Saffery — Statutory Residence Test Explained
https://www.saffery.com/insights/articles/statutory-residence-test/ Clear breakdown of the SRT from a UK chartered accountancy firm.
- KPMG — SRT Flowchart
https://assets.kpmg.com/content/dam/kpmg/pdf/2016/01/statutory-residence-test-flowchart.pdf Visual flowchart of the SRT decision tree.
- PwC Tax Summaries — UK Individual Residence
https://taxsummaries.pwc.com/united-kingdom/individual/residence Summary of UK residence rules including SRT thresholds.
- Deloitte TaxScape — Statutory Residence Test
https://taxscape.deloitte.com/article/statutory-residence-test.aspx Deloitte's analysis of the SRT and its practical application.