How long can UK citizens stay in Europe?

This is the misconception that causes refused boardings. There is no per-country allowance. GOV.UK puts it plainly: the limit applies regardless of how many different countries you visit within the area.

The Schengen area now covers 29 countries — Austria, Belgium, Bulgaria, Croatia, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden and Switzerland.

Bulgaria and Romania joined on 1 January 2025, so time there now draws on the same 90 days it did not touch before. Anyone whose mental model of "which countries count" predates that is working from an out-of-date list.

These are easy to miss precisely because nothing at the border reminds you.

• Monaco, San Marino and Vatican City. Each opens directly onto a Schengen country — Monaco onto France, the other two onto Italy — with no control on the way in. GOV.UK states that Monaco and San Marino follow Schengen area rules, and days there count as if you had stayed in the neighbouring country.
• Gibraltar, since 15 July 2026. Under the UK–EU agreement now provisionally applying, its entry conditions for short stays align with Schengen requirements: the land frontier with Spain has no routine checks, and the external check happens at Gibraltar's own airport and port instead. GOV.UK is explicit that time in Gibraltar counts alongside your Schengen days. Anyone who used to treat it as neutral ground needs a new mental model — the 90/180 rule covers how the crossing now works.

Andorra is the near-miss. It is genuinely outside the Schengen area, but the only way in is through France or Spain, so you have to satisfy the 90/180 rule again on the way back out. A detour there does not bank days.

• Ireland. The rules do not apply to travel to Ireland. Under the Common Travel Area British citizens can live and work there without restriction, and the time does not touch the Schengen allowance.
• Cyprus. Not in the Schengen area. British citizens get up to 90 days in any 180 there on a separate allowance — time in Schengen does not reduce it, and time in Cyprus does not reduce your Schengen days.
• Countries outside the EU and Schengen entirely — Turkey and Georgia, for example — run their own limits, which is why they appear so often in itineraries built around the 90-day cap.

The 90/180 rule is checked by counting back 180 days from the day in question and totalling the Schengen days inside that window. It never resets on a date, and leaving the area does not clear it — your allowance returns gradually as individual days age past the 180-day mark.

Any part of a day counts, so both your travel days are used.

If you want to be in one country for more than 90 days, or to work there, the answer is that country's own national long-stay visa or residence permit, not better arithmetic. That is an application to the country concerned, and it takes you outside the 90/180 cap rather than extending it.

A separate point worth keeping distinct: spending long periods in one country can make you tax resident there under its own rules, which is an entirely different test from the immigration limit — and leaving the UK does not automatically end UK tax residence either.

• GOV.UK — Travelling to the EU and Schengen area
• European Commission — Schengen area
• European Commission — Short-stay visa calculator