quality:corruption
Economy

Zurich contributes approximately 10% to Switzerland's GDP. Approximately 90% of workers are employed in the tertiary sector.

In a 2009 survey by CityMayors.com, Zurich was ranked 9th among the "World's 10 Most Powerful Cities". In the 2017 Global Financial Centres Index, Zurich was ranked as having the 11th most competitive financial centre in the world, and second most competitive in Europe after London. The Greater Zurich Area is Switzerland's economic centre and home to many international companies.

Some of Switzerland's largest financial institutions have their headquarters in Zürich, most notably: UBS, Credit Suisse, Zurich Cantonal Bank, Migros Bank, Julius Baer, Zurich Insurance Group, Swiss Re and Swiss Life.

For a list of the largest companies in Zürich, see: List of Swiss companies by revenue.