SNB’s Calculated Franc Pause Leaves Currency Exposed to 2026 Shocks

The Swiss National Bank's 2025 intervention pattern reveals a clear cyclical dip. Total foreign currency purchases for the year amounted to CHF 5.2 billion. Nearly all of this activity-just under CHF 5.1 billion-was concentrated in the second quarter. This surge followed the market shock of Donald Trump's "Liberation Day" tariff announcements, which pressured the dollar and triggered a sharp franc rally. In stark contrast, the bank made no or only insignificant foreign currency purchases in the fourth quarter.

This minimal activity stands in sharp relief to the SNB's historical toolkit. The bank has long used a minimum exchange rate floor, and even today it maintains a combination of verbal intervention and negative interest rates. The 2025 pattern, therefore, looks less like a permanent policy shift and more like a targeted, cyclical pause. The bank acted decisively when the franc's safe-haven strength spiked, but then stepped back as the immediate pressure eased.

Yet the timing of that pause is telling. The decision to hold off on purchases in the final quarter of the year, after a major intervention, signals underlying vulnerabilities. It suggests the SNB may have judged the franc's strength to be more of a cyclical reaction to geopolitical risk than a persistent structural trend. This measured approach, while preserving its arsenal for future shocks, also leaves the currency exposed to renewed turbulence without the immediate dampening effect of large-scale buying.

Underlying Economic Drivers: The Current Account and Growth

The SNB's decision to step back from the market in late 2025 cannot be viewed in isolation from the underlying economic currents shaping the franc. A key structural headwind emerged in the fourth quarter: Switzerland's current account surplus halved, falling to CHF 6.96 billion from a revised CHF 15.79 billion in the prior quarter. This sharp deceleration in the surplus is a critical development. The current account is a primary source of natural demand for Swiss francs, as trade surpluses and investment income flow into the country. When that inflow slows, it directly reduces the fundamental pressure that supports the currency's strength.

This economic backdrop creates a complex challenge for the SNB. While the bank's primary mandate is price stability, its implementation involves managing the money market and influencing short-term interest rates. The instruments it uses-like the interest rate on sight deposits and open market operations-are sensitive to currency strength. A weaker franc can boost inflation through imported goods, while a very strong franc can stifle growth and export competitiveness. The deceleration in the current account surplus suggests the natural support for the franc is fading. This reduces the currency's inherent appeal as a safe haven, potentially making it more vulnerable to swings driven by global risk appetite rather than domestic fundamentals.

For the SNB, this means its traditional tools for managing the franc's value may need to work harder. With the structural demand from trade flows softening, the bank has less of a natural cushion to absorb volatility. Its reliance on negative interest rates and foreign exchange interventions becomes more pronounced, as these are the instruments it can deploy to directly influence the currency's level. The 2025 pause, therefore, might be a calculated risk. The bank may have judged that the cyclical surge in safe-haven flows was the dominant force, but the underlying economic shift in the current account adds a layer of uncertainty. It leaves the franc more exposed to future shocks, as the bank's arsenal is now the sole counterweight to a weakening fundamental support.

The Policy Dilemma: Intervention vs. Independence

The SNB's 2025 pattern forces a stark strategic trade-off. On one side is the bank's mandate to manage the franc's value and prevent deflationary pressures from a strong currency. On the other is the political cost of intervention, which has become a direct obstacle to trade relations. The United States has repeatedly branded Switzerland a currency manipulator, a label that complicates ongoing negotiations for a customs agreement. This political sensitivity makes large-scale foreign exchange purchases a weapon of last resort, not a routine tool.

The bank's toolkit is layered. At its core are the instruments of monetary policy: open market operations and the interest rate on sight deposits, which manage short-term liquidity and money market rates. These are the primary levers for daily operations. The SNB also employs verbal intervention and negative interest rates to signal its stance and influence the franc's level. But when the franc's rally threatens to spiral, the bank's substantial foreign exchange reserves, exceeding 900 billion CHF, provide the firepower for direct market action.

The 2025 pattern reveals a bank conserving its ammunition. It used its reserves decisively in the second quarter to counter the sharp franc surge triggered by global risk shocks. Yet it then held back entirely in the fourth quarter. This pause is a calculated move. By limiting its purchases to a single, targeted intervention, the SNB preserves its balance sheet and avoids further inflaming political tensions. It signals that it will not engage in sustained, large-scale buying unless the threat to the currency or the broader economy becomes severe.

The bottom line is one of strategic patience. The SNB is waiting for a more acute threat-a sustained, destabilizing rally that could undermine export competitiveness or trigger a deflationary spiral-before re-engaging its most potent tool. In the meantime, it relies on its other instruments and the credibility of its policy framework. This approach manages the immediate political friction but leaves the franc exposed to renewed turbulence. The bank is betting that the cyclical nature of the 2025 shock was temporary, and that its arsenal will remain effective when the next, more serious test arrives.

Catalysts and Scenarios: What to Watch for 2026

The SNB's measured stance in 2025 sets the stage for a year where external pressures will be the primary test of its resolve. The bank has signaled it will not engage in routine buying, but a shift in the macroeconomic or geopolitical landscape could quickly change that calculus. The key triggers to watch fall into three categories.

First, a deterioration in Switzerland's fundamental trade flows could force the bank's hand. The sharp halving of the current account surplus in the fourth quarter to CHF 6.96 billion is a warning sign. If this trend continues into 2026, a sustained decline in the surplus would further erode the natural demand for francs. This could weaken the currency's structural support, making it more susceptible to volatile swings. Should the franc weaken too sharply, potentially threatening export competitiveness or triggering inflationary pressures from imported goods, the SNB's mandate would compel a reassessment of its intervention threshold.

Second, a resurgence of safe-haven flows would directly challenge the bank's policy. Geopolitical tensions, as seen in early 2025, can rapidly drive capital into the franc. The market's positioning at that time showed commercial hedgers increasing short positions on the franc, a sign of active speculation against the currency. If similar events reignite, the SNB's commitment to prevent excessive appreciation would be tested. The bank's vigilant stance against excessive franc appreciation remains in place, but its willingness to deploy its substantial reserves would depend on the scale and persistence of the rally.

Third, shifts in major trading partner policies, particularly from the United States, could alter the risk environment. The SNB's political sensitivity to being labeled a currency manipulator by the U.S. adds a layer of complexity. A significant shift in U.S. trade policy that reignites global uncertainty could spark a new wave of safe-haven demand for the franc. The bank would then face a dilemma: intervene to manage its currency and support the economy, or hold back to avoid further friction with its largest trading partner.

For investors and policymakers, the bank's own communications will be critical for gauging its evolving stance. The upcoming financial report and accountability statements will provide a detailed look at its operations and financial position. More importantly, the tone and substance of its policy communications will reveal whether the bank sees the 2025 pause as a temporary cyclical adjustment or the start of a longer-term shift in its approach to currency management. The coming months will test whether the SNB's arsenal is sufficient to navigate a year of potential turbulence.