Following the UK's departure from the European Union, British citizens are treated as "third-country nationals" regarding Swiss immigration, meaning they can stay in Switzerland for up to 90 days within any 180-day period without a visa for tourism or short-term visits. This is the standard "Schengen Area" rule, even though Switzerland is not in the EU (it is part of the Schengen Zone). This 90-day limit is cumulative across all Schengen countries; for example, if you spend 30 days in France and then enter Switzerland, you only have 60 days remaining in your window. For stays longer than 90 days, or if you intend to work or study in Switzerland, Brits must apply for a specific residence or work permit through the relevant Swiss cantonal authorities. In 2026, it is also essential to ensure your British passport was issued within the last 10 years and has at least three months of validity remaining beyond your intended departure date. You should also be prepared to show proof of sufficient funds and a return ticket if asked by border officials at major hubs like Zurich or Geneva.