The 90-Day Tie Explained: UK Statutory Residence Test

The 90-day tie is the only UK tie that has nothing to do with what you do this year. It is set entirely by how many days you spent in the UK in the previous two tax years. If you exceeded 90 days in either of those years, you have the tie now — and there is nothing you can do to remove it mid-year.

This makes the 90-day tie the most common surprise for recent leavers. You have moved abroad, reduced your UK visits, and feel confident about your position. But if you spent more than 90 days in the UK in your final year before leaving — or the year before that — you are carrying a 90-day tie into your first years of non-residency. The years when you most need clean numbers.

The 90-day tie is one of the five UK ties that determine how many days you can spend in the UK before becoming tax resident. Understanding it requires looking backwards, not at the current year.

Not sure whether you have a 90-day tie? The free SRT questionnaire checks all five ties against your specific history and gives you a full residence determination in about 10 minutes.

Key points

The 90-day tie applies if you spent more than 90 days in the UK in either of the two tax years immediately before the year being assessed
Each of the two preceding years is assessed independently — the days are not added together
The tie is backward-looking — it cannot be changed by what you do in the current year
If you exceeded 90 days in your final year in the UK, the tie follows you for two years after departure
Spending exactly 90 days does not trigger the tie — it must be more than 90

What the 90-day tie is

A 90-day tie exists if you spent more than 90 days in the UK in either (or both) of the two tax years immediately preceding the year being assessed (RFIG20570).

The logic is straightforward: someone who spent a substantial amount of time in the UK recently is likely to have retained genuine connections — habits, relationships, routines — that tie them to the country. The 90-day tie flags that history, independently of any current-year circumstances.

The independent-year rule

Each year is assessed on its own

This is where most people go wrong. HMRC does not add the days from the two preceding years together and check whether the combined total exceeds 90. Each year is assessed independently. You need more than 90 days in at least one of the two years for the tie to exist.

Scenario	Year 1 days	Year 2 days	90-day tie?
Both years under 90	50	70	No
One year over 90	91	50	Yes
Both years over 90	100	95	Yes
Exactly 90 in one year	90	40	No — must be more than 90

HMRC's own examples (RFIG20570)

Mo: Spent 50 days in the UK in 2021–22 and 50 days in 2022–23. Assessing 2023–24: neither year individually exceeded 90 days. No 90-day tie.

Finn: Spent 98 days in the UK in 2015–16 and 51 days in 2016–17. Assessing 2017–18: 2015–16 exceeded 90 days — that one year is enough. 90-day tie applies.

The key insight from Mo's case: 100 days total across two years (50 + 50) does not trigger the tie. Finn's 98 days in a single year does. The test is annual, not cumulative.

The persistence trap

The tie follows you after you leave

If you spent more than 90 days in the UK in your final year before leaving, that year creates a 90-day tie for both of the two tax years immediately following.

This is the rule that catches most recent leavers. Suppose you left the UK in October 2023. Your 2022–23 tax year: you were UK resident for most of it and spent more than 90 days in the UK. Your 2023–24 year: you were in the UK for the first part before leaving in October, potentially accumulating another 90+ days.

The result: you could be carrying the 90-day tie through 2024–25 and 2025–26 — two full tax years after you left — based entirely on your prior UK presence. And those are exactly the years when the tie matters most, because you are still under Table A and managing your day count carefully.

Worked example: Elena (leaver, 2024)

Elena left the UK on 1 January 2024. In 2022–23, she spent 180 days in the UK (fully resident). In 2023–24, she spent 90 days in the UK before departing in January.

Assessing 2024–25:

2023–24 (preceding year): 90 days — not more than 90 → does not trigger the tie
2022–23 (year before that): 180 days — more than 90 → tie applies

Elena has a 90-day tie in 2024–25 from her 2022–23 history.

Assessing 2025–26:

2024–25 (preceding year): Elena managed 60 UK days → does not trigger the tie
2023–24 (year before that): 90 days — not more than 90 → does not trigger

Elena is free of the 90-day tie from 2025–26 onwards — because she kept her 2024–25 UK presence under 91 days. If she had spent 91 days in 2024–25, she would have re-triggered the tie and extended it into 2026–27.

Why the 90-day tie matters most in years one and two after leaving

The 90-day tie is most likely to exist — and most likely to be overlooked — in the first two years after someone leaves the UK. Those are the exact years when:

The preceding year totals are at their highest (the leaver was fully UK resident)
The leaver is still returning to the UK frequently for family, work, and personal reasons
Other ties — family, accommodation, work — are also still in place

A leaver with the 90-day tie plus the family tie is already at two ties. Under Table A, two ties and 46–90 UK days = UK resident. The 90-day tie does not announce itself. Without actively checking, many leavers carry it without knowing.

How the 90-day tie affects your day limit

The 90-day tie is one of up to five ties assessed under the sufficient ties test. For leavers (Table A):

UK days in the tax year	Ties needed to be UK resident
16–45	4 or more
46–90	3 or more
91–120	2 or more
121–182	1 or more

A leaver with the 90-day tie alone can spend up to 90 UK days before becoming resident. Combined with a family tie — which many recent leavers also carry — two ties drops that threshold to 45 days. For the full breakdown, see the day limits reference table or how many days in the UK before becoming tax resident. If you want to track your remaining UK days in real time against your threshold, the Day Budget Dashboard updates as you log visits.

Common questions

Can I reduce my 90-day tie by spending fewer days in the UK this year?

No. The 90-day tie is set by the two preceding years, not the current year. Your current-year UK days are irrelevant to whether the tie exists right now — though they do determine whether the tie persists into future years. If you want to clear the tie for a future year, you need to ensure you stay under 91 UK days in the preceding year.

Does the year I left the UK count toward the 90 days?

Yes. The departure year is a real tax year. Days spent in the UK in that year count toward the 90-day calculation. If you left mid-year and had accumulated more than 90 UK days by departure, that year can create the 90-day tie for the following two years.

What if I was UK resident in one of the two preceding years but had split year treatment?

A year in which split year treatment applied is still a year of UK residency, and the days you spent in the UK in that year still count toward the 90-day assessment. Split year treatment divides the tax year for income purposes — it does not alter your UK day count for tie purposes.

Does the 90-day tie apply to arrivers?

The 90-day tie applies to both leavers (Table A) and arrivers (Table B). An arriver who was in the UK for more than 90 days in one of the two preceding years — perhaps as a visitor or short-term worker — can have a 90-day tie even as a new arrival.

If both preceding years exceeded 90 days, am I in a worse position?

Not worse in terms of the tie itself — the 90-day tie is binary. But both preceding years exceeding 90 means you will carry the tie for longer. The tie will persist until both preceding years are under 91 days, which takes more time to achieve if the second of the two years also exceeded 90.

Does the 90-day tie affect my accommodation or family tie assessment?

No — each tie is assessed independently. The 90-day tie does not affect whether the accommodation, family, work, or country tie applies. What it does affect is your total tie count, which determines your day limit under the sufficient ties test.

Apply the 90-day tie rules — and all other ties — to your specific situation using the free SRT questionnaire. It checks your preceding-year UK day count alongside all other ties and gives a full residence determination referencing the HMRC rules at each step. No account required.

This content is for informational purposes only and does not constitute tax advice. For complex situations, professional advice from a qualified tax adviser is recommended.