Definition
Additional Tier 1 (AT1) instruments are loss‑absorbing bonds that can be written down or converted into equity in a crisis, sitting between equity and senior debt in the capital stack. Switzerland is now debating whether to restrict their future use in bank rescues after the controversial wipe‑out of Credit Suisse AT1 holders.
Key takeaway
Switzerland’s struggle to redesign its crisis toolkit after the Credit Suisse rescue shows how hard it is to write “tough” resolution rules when one universal bank (UBS) dominates the system. The way Bern handles AT1s, bail‑in and structural safeguards will be watched as a live test of post‑crisis bank‑resolution doctrine.
The new Swiss AT1 fight in a nutshell
Reuters reports that Swiss finance minister Karin Keller‑Sutter has warned lawmakers are “afraid of pressure” from UBS over a proposal to ban the use of AT1 bonds in future bank rescues.
Key points from the debate:
- The government wants to prohibit the kind of AT1 wipe‑out used in the Credit Suisse deal, arguing it damaged investor confidence and raised funding costs.
- Lawmakers, however, are wary of passing rules that UBS — now the country’s dominant universal bank — might see as too restrictive or costly.
- Behind the scenes, there is concern that if AT1s are removed from the toolkit, future rescues could become more politically and fiscally painful.
Cause → effect:
- Cause: Political backlash and litigation around the Credit Suisse AT1 bail‑in.
- Effect: A push to limit or redesign AT1, colliding with fears of antagonising the one bank Switzerland can least afford to upset.
Why dominance changes the resolution calculus
In text‑book resolution theory, regulators can credibly threaten bail‑in because no single institution is “too powerful” to face losses. In practice, Switzerland now has:
- one very large universal bank (UBS) with outsize market and political weight,
- a recent precedent of emergency merger and controversial capital‑structure decisions,
- and a public and parliamentary opinion still scarred by the Credit Suisse weekend.
This changes incentives:
- Lawmakers may fear that stringent rules — for example, tighter structural separation or hard limits on certain instruments — could hurt UBS’s global competitiveness.
- Regulators know they need credible loss‑absorption tools, but also know a confrontation with their biggest bank could backfire economically and politically.
The result is a tension between “too big to fail” and “too powerful to regulate aggressively.”
What banning AT1 from rescues would actually mean
If Switzerland were to ban or severely restrict the use of AT1 in future rescues, several consequences follow logically:
- Narrower bail‑in perimeter: Losses would have to fall more heavily on common equity and, potentially, senior creditors or taxpayers.
- Higher funding costs: Investors would likely demand more compensation for holding other loss‑absorbing instruments if AT1 is off the table as a flexible buffer.
- Complex interaction with global standards: Switzerland would look less aligned with jurisdictions that still treat AT1 as part of their loss‑absorbing capital stack.
In short, removing AT1 from the toolkit does not remove the need to absorb losses; it simply reallocates where those losses would land.
Lessons for other regulators: concentration, politics and design
The Swiss case offers several broader lessons:
- Market structure matters
- In a concentrated system, resolution policy is also competition policy: every constraint on the dominant bank has macro implications.
- This gives large institutions more informal leverage in political debates.
- Legal clarity vs. political flexibility
- Global consistency vs. national preferences
- Basel standards provide a template, but each country’s mix of AT1, senior bail‑in debt and structural measures will differ.
- Fragmentation in how AT1 is treated could complicate cross‑border resolution planning for global banks.
These trade‑offs will not be unique to Switzerland as other countries grapple with their own “national champions.”
What banks and investors should watch next
For banks (in Switzerland and beyond):
- Capital structure planning: Future rules on AT1, senior non‑preferred debt and total loss‑absorbing capacity (TLAC) will shape funding strategy and investor base.
- Resolution playbooks: Firms should assume that documentation, contract language and disclosure around bail‑in will face closer scrutiny after the Credit Suisse experience.
For investors:
- Instrument‑level risk: AT1 and other subordinated instruments must be analysed not just through a Basel lens, but through each jurisdiction’s political and legal culture.
- Country overlays: “Swiss risk,” “EU risk” or “UK risk” in bank capital structures may diverge as domestic debates evolve.
For policymakers:
- The Swiss debate is a reminder that credible resolution regimes require both technical design and political durability.
- If key tools become politically toxic after one use, the entire post‑crisis architecture may need re‑thinking.
Quick Q&A
Is Switzerland really going to ban AT1 in future rescues?
Short answer: It is under discussion, not decided.
Explanation: The government has floated restrictions, but lawmakers are hesitant, partly because they fear pushback from UBS and the impact on Switzerland’s financial centre.
Why does one dominant bank make resolution design harder?
Short answer: It magnifies trade‑offs.
Explanation: Strict rules that might be manageable in a diversified system could have outsized effects on credit, employment and tax revenues when applied to a single, very large institution.
Would banning AT1 make future rescues safer for taxpayers?
Short answer: Not automatically.
Explanation: Removing AT1 reduces one private loss‑absorbing layer; unless replaced by other bail‑inable instruments, losses could shift toward senior creditors or the state.
What should AT1 investors take away from this?
Short answer: Jurisdictional risk is real.
Explanation: After Credit Suisse, investors need to price the possibility that national authorities interpret or change AT1 rules in ways that differ sharply across countries.
How does this connect to broader EU and UK capital debates?
Short answer: Everyone is re‑tuning the toolkit.
Explanation: While Switzerland debates AT1 bans, the EU is tweaking market‑risk and operational‑risk rules, and the UK is reforming senior‑manager regimes — all signs that post‑crisis frameworks are entering a “second‑generation” adjustment phase.
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