The Swiss government proposed measures to curb risk-taking at UBS AG and Credit Suisse Group AG as it bids to win parliamentary approval for a tax treaty with the U.S.

"The risks of systemically important banks should be restricted, as more stringent capital, liquidity and risk diversification requirements will be set out," the government said Wednesday. The laws, based on proposals last month by a government-appointed panel, could be in force as of January 2012.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.