As European governments struggle to tax mobile wealth, Switzerland has perfected internal competition. Its 26 cantons have turned tax policy into a national sport, luring companies and individuals through aggressive rates. Vontobel, the 102-year-old private bank, announced it will relocate headquarters and 1,500 employees from Zurich to Baar in Zug by 2030, joining SGS, which completed its move to Zug this year.

This decentralized system creates a fragmented landscape where cantons like Lucerne and Zug fiercely undercut one another. While Zurich counters with arguments about retaining major taxpayers, the allure of significantly lower rates—Zug's corporate tax sits at 11.66 percent versus Zurich's 19 percent—proves irresistible. Geneva has responded with tax overhauls to retain firms like Millennium Management.

For wealthy residents, the disparity is stark, with Zug's top personal income tax rate at 22 percent compared to Geneva's 40+ percent. Schwyz has become a haven for the affluent. This internal competition, compressed into a nation of 9 million, sees cantons using everything from infrastructure to incentives to win the tax battle, reshaping where economic power resides within Switzerland's borders.