Swiss lawmakers press on with UBS capital bill

On Sept. 17, 2026, the upper house of Switzerland’s parliament began debating draft legislation that would significantly change capital requirements for UBS Group AG. The debate started after a lawmaker withdrew a motion that sought to return the proposal to the Federal Council, removing a procedural obstacle. As a result, the bill remains in the legislative arena and continues along the standard parliamentary track.

The legislation is focused on Switzerland’s largest bank and follows concerns about how major financial institutions are capitalized. Lawmakers in the upper house are now examining how stringent the new framework should be and how it should be structured across different types of regulatory capital.

The draft law could require UBS to hold as much as an additional $20 billion in Common Equity Tier 1 capital. CET1 is the highest-quality form of regulatory capital and is central to the resilience of large banks. The potential increase reflects the scale of UBS’s international operations and the intent to strengthen loss-absorbing capacity at the group level.

This prospective capital build-up would be tied to the full value of UBS’s foreign subsidiaries. The requirement seeks to ensure that risks taken abroad are fully backed by robust capital resources held in Switzerland, reinforcing the group’s ability to absorb shocks.

At the heart of the government’s proposal is a rule that UBS must back the entire value of its foreign subsidiaries with the highest-quality capital at home. This means that the parent entity in Switzerland would be required to maintain sufficient CET1 to cover these foreign units on its own balance sheet. The approach is designed to align capital with the risks arising from the bank’s global footprint.

Such a requirement would formalize a strict link between overseas exposures and domestic capital buffers. It aims to reduce the likelihood that foreign operations could strain the Swiss parent’s financial position without adequate capital support.

While the government’s plan emphasizes CET1, parliamentary committees have explored partial alternatives to ease the burden. Among the options under discussion is the use of Additional Tier 1 instruments, a different category of regulatory capital that can absorb losses under stress conditions. These discussions focus on whether some of the requirement could be met with AT1 rather than exclusively with CET1.

The committees’ considerations indicate that the final framework could blend different capital instruments while preserving a strong core equity base. However, the central thrust of the reform remains the full backing of foreign subsidiaries with top-quality capital held in Switzerland.

With the motion to send the bill back withdrawn, the draft law will continue through the standard parliamentary process. The upper house debate marks a key stage in refining the details of UBS’s future capital regime. Subsequent steps will determine the exact mix and scale of capital required and how the rules are implemented over time.

The ongoing deliberations in parliament will shape how UBS allocates capital across its global operations and how Swiss regulators oversee systemic institutions. For now, the legislative focus remains on strengthening the capital framework while weighing the implications of a large prospective increase in CET1 requirements.