How many days can I spend in the UK?
Why there is no single safe UK day limit, and how ties, work and recent residence change the answer.
Short answer: There is no universal ‘90-day rule’. Spending 183 days or more in the UK normally makes you resident, but you can become resident with far fewer days if you work here, have a UK home or have enough UK ties. Your safe day limit depends on your recent residence history and circumstances for that tax year, so treat any online estimate as a starting point rather than clearance to travel.
Key points
- 183 UK days normally means automatic UK residence.
- Fewer days can still make you resident.
- Some overseas tests require tight UK day and workday limits.
- Plan with a margin rather than aiming at the last possible day.
Days and ties work together
When the automatic tests do not decide residence, the sufficient-ties test uses different day bands. The more UK ties you have, the fewer days may be needed for UK residence.
- Family tie
- Accommodation tie
- Work tie
- 90-day tie
- Country tie for some leavers
How days are normally counted
A day is generally counted when you are in the UK at midnight, but deeming rules and limited exceptions can change the count. UK workdays may also matter even when they are not UK days at midnight.
Before booking travel
Model the whole tax year and keep contingency for delayed flights, family events and work changes. A day-count plan should record both the headline limit and the assumptions supporting it.
Written and reviewed by Matthew S Manderson CTA ATT AMIT
Reviewed 3 September 2026. General guidance only; tax treatment depends on individual facts.