Swiss lawmakers failed on Aug. 11 to agree on whether to soften post-Credit Suisse capital rules that could force UBS to hold about $20 billion, or roughly CHF 17.3 billion, in additional Common Equity Tier 1 capital, leaving one of Europe's most closely watched bank reform efforts unresolved until the parliamentary committee reconvenes on Aug. 31 ahead of an upper-house vote targeted for September. The bill would require UBS to meet capital allocation requirements for its foreign subsidiaries entirely with CET1 rather than the mix of capital instruments allowed under current rules, where the requirement is set at 60%. UBS has called the proposal excessive and harmful to its competitiveness as it absorbs Credit Suisse after the 2023 state-backed rescue that exposed Switzerland's too-big-to-fail problem. Lawmakers are weighing amendments that would let part of the requirement be met with Additional Tier 1 capital and add triggers that halt certain investor distributions if UBS's capital ratio falls below a threshold, though regulators view AT1 as less secure than CET1. Investors are watching the outcome for its effect on buybacks, dividends and UBS's capital strategy, while policymakers across Europe monitor the debate as Basel III implementation moves toward its final stage.