Swiss population cap proposal could reshape Switzerland’s ties with Europe

As Swiss voters head to the polls tomorrow, the country is weighing a proposal that could redraw its economic future and strain its ties with the European Union — a high-stakes referendum some have compared to Britain’s Brexit vote.

What does the proposal envisage?

Under the plan, Switzerland’s population, now at 9.1 million, would be barred from rising above 10 million before 2050. Current projections do not expect that threshold to be reached until the early 2040s.

If the population climbs to 9.5 million, the government would be required to tighten immigration rules, particularly on asylum and family reunification. Officials forecast that point will be reached around 2031, though it could come as early as 2029.

Should the population eventually hit 10 million, Swiss authorities would be compelled to use “all available” measures to enforce the cap, including the possible termination of international agreements seen as contributing to population growth.

An advert for the Yes campaign seen on the outskirts of Zurich

That agreement gives EU citizens the right to live in Switzerland if they are working or studying there, while Swiss citizens enjoy the same access in the EU. The right to remain, which extends to family members, can still apply after employment ends. Switzerland also has an “emergency brake” on free movement in the event of “serious economic or social problems”, though its use is subject to arbitration.

Why has it been launched?

Switzerland’s population has expanded far more quickly than the EU’s since its free movement accord with the bloc took effect in 2002.

For many newcomers, the Alpine nation offers a powerful draw: higher wages, lower taxes and an economy that has attracted companies while fuelling demand for skilled workers.

The right-wing Swiss People’s Party, or SVP, launched the population cap initiative, saying mass immigration has stretched public services and housing, and contributed to a rise in crime.

What does it need to pass?

For the proposal to succeed, it must win both a majority of voters nationwide and a majority of Switzerland’s cantons, or states.

In 2014, Swiss voters narrowly approved an SVP initiative to restore immigration quotas with the EU, although its effect was softened during the political process that followed.

What could a cap mean for the economy?

Switzerland has an ageing population and depends on immigrants to fill a wide range of jobs. Most of those workers come from Europe.

Foreign nationals now account for almost 28% of the permanent population, and a recent study found they made up nearly two in five company founders in Switzerland.

The EU remains by far Switzerland’s most important trading partner, and in late 2024 the two sides reached a bilateral accord aimed at deepening economic integration — a deal the SVP opposes.

That agreement is now moving through parliament and is widely expected to face a bruising referendum battle in Switzerland, which US President Donald Trump last year targeted with the highest tariffs in Europe.

Free movement is one of the foundations of the EU single market, and any Swiss attempt to curb the entry of European workers could unsettle relations between Bern and Brussels.