Switzerland’s UBS Capital Plan Is Becoming a Test Case for How Far Regulators Should Go After Credit Suisse

The Swiss government is framing the reform as a direct response to the failures exposed by the Credit Suisse collapse. The Federal Council said current rules do not adequately capitalise foreign participations and that this weakness contributed to the need for state intervention in 2023. Under the new approach, foreign subsidiaries would have to be fully backed by CET1 capital at the Swiss parent, replacing a system in which roughly half can currently be financed with debt. Bern described the measure as a targeted fix rather than a general capital crackdown, saying Parliament can begin debating the legislative proposal from summer 2026, while the ordinance changes on software capitalisation would take effect on January 1, 2027.

For UBS, however, the issue is scale. Reuters reported that the package would require roughly $20 billion of additional CET1 capital, while the Swiss authorities said that based on the status quo the actual shortfall would have been about $9 billion if the rules had applied from January 1, 2026. The government also softened parts of the original package by not requiring full CET1 backing for deferred tax assets and software, instead applying a three-year amortisation period for software aligned with EU rules. Even after those concessions, the capital burden remains large enough to unsettle investors, with UBS shares falling nearly 3% on April 23 as the market absorbed the implications.

The investor backlash is being shaped not only by the absolute size of the increase, but by the relative comparison with other jurisdictions. UBS’s own AGM presentation argues that Switzerland is moving in the opposite direction from the United States and the UK, where banks are expected to benefit from lighter capital treatment, and claims the Swiss proposals would raise UBS’s minimum CET1 requirement far above peers and cut return on equity materially. Reuters said critics fear the tougher regime could depress shareholder returns, damage the bank’s global competitiveness, and even revive discussions about whether UBS should reconsider its domicile if the regulatory gap becomes too wide.

That said, the political process is not over, and one of the biggest live questions is whether Switzerland eventually allows some use of AT1 capital to absorb part of the burden. Reuters reported separately that some lawmakers want up to 50% of the foreign-subsidiary requirement to be met with AT1 bonds, while the Federal Council has explicitly chosen to leave AT1 changes aside for now and wait for international developments. That leaves UBS caught between two competing logics: regulators want a structure that clearly protects taxpayers in a future crisis, while investors want a capital regime that still lets the bank compete as a global franchise. The final answer will shape not just UBS’s valuation, but also how other countries think about supervising oversized national banking champions after a rescue.