Executive Summary

The Iran war affects Swiss monetary policy indirectly – less through oil prices than through the "flight to the safe haven franc". While higher energy prices increase inflation by approximately 0.3 percentage points, franc appreciation reinforces this effect through cheaper imports by approximately 0.35 percentage points again. The net effect on price stability is minimal. The greater danger for the Swiss National Bank lies in a massive franc overvaluation, against which it has already intervened verbally. A key interest rate step is considered unlikely this week.

People

Topics

  • Currency policy / foreign exchange market
  • Monetary policy strategy
  • Geopolitical risk
  • Energy prices and inflation

Clarus Lead

The Iran conflict creates a paradoxical scenario for the SNB: Rising oil prices do increase inflation, but the simultaneous flight of investors to the "safe haven franc" appreciates the currency and thus cheapens imports – the two effects neutralize each other. The SNB board will therefore not take an interest rate step this week. The central bank's actual concern is excessive franc appreciation, against which it has already initiated "verbal interventions" on the foreign exchange market and may actively intervene.

Detailed Summary

UBS economists have quantified the two opposing effects of the Middle East conflict: the oil price increase raises gasoline and heating oil costs and thus inflation by a maximum of 0.3 percentage points. In parallel, the franc has appreciated against the euro by 3.5 percent since December – this appreciation effect lowers inflation by approximately 0.35 percentage points, as foreign goods become cheaper. Mathematically, these forces cancel each other out; the SNB can therefore maintain its current key interest rate of 0 percent.

However, this only applies under conditions of stability. Chief Economist Karsten Junius assumes that the franc is currently overvalued by approximately 6 percent. Should the crisis intensify and the flight into the franc accelerate, a destabilizing appreciation spiral threatens. The SNB has therefore already signaled two days after the outbreak of war that its intervention readiness on the foreign exchange market is "elevated". It wants to dampen "rapid and excessive appreciation". Interest rate cuts would be ineffective: the interest rate differential to the euro area is already large; even lower rates would not deter safety buyers. Instead, the SNB remains dependent on foreign exchange purchases – a technical instrument that it only discloses with a delay and in aggregated form.

Key Statements

  • Double Offset: Higher oil prices and franc appreciation roughly cancel each other out in inflationary terms; no pressure to act on the key interest rate.
  • Greater Danger: Excessive franc overvaluation (approximately 6 percent) destabilizes the real economy more than energy costs.
  • Verbal + possible active interventions: The SNB signals intervention readiness and may already be intervening on the foreign exchange market without openly communicating this.
  • Uncertainty forces restraint: Because no one can predict the duration of the war, "activism" is poor advice.

Critical Questions

  1. Evidence/Data Quality: What exact data does the UBS estimate of 0.3 and 0.35 percentage point effects rely on? How robust are these rules of thumb given non-linear market dynamics?

  2. Source Conflicts: In his statement about 6 percent overvaluation, does Karsten Junius (Safra Sarasin) represent the positions of an asset manager that would benefit from franc weakness, or is this an independent analyst assessment?

  3. Causality/Alternatives: Can the SNB ensure that observed exchange rate movements (e.g., euro below 0.90 francs) actually result from its interventions and not from other market factors (e.g., US interest rate expectations)?

  4. Conflicts of Interest: Why does the SNB only disclose its foreign exchange market interventions with a delay and in aggregated form? Doesn't this lack of transparency create room for speculation and market distortions?

  5. Risks of Inaction: If the war situation deteriorates rapidly (e.g., oil embargo), could the neutralizing effects break down – does the SNB have an escalation-triggered plan?

  6. Feasibility of Interventions: Are SNB foreign exchange purchases sufficiently capitalized to brake sustained flight into the franc, or is this merely a temporary symptom-management tool?

  7. Deflationary Risk: The SNB describes higher energy prices as "accommodative". Does it overlook that import-dependent sectors could suffer more from franc appreciation than aggregate inflation suggests?

Sources

Primary Source: Der Iran-Krieg führt zu einer Flucht in den Franken: Das ist für die Nationalbank die grössere Gefahr als der hohe Ölpreis – Neue Zürcher Zeitung, 16.03.2026

Verification Status: ✓ 16.03.2026

This text was created with the support of an AI model. Editorial responsibility: clarus.news | Fact-checking: 16.03.2026