SNB Adjusts Remuneration of Sight Deposits: Implications for Swiss Franc Assets and Global Capital Flows

The Swiss National Bank (SNB) has once again recalibrated its monetary policy framework, adjusting the threshold factor for sight deposit remuneration from 18 to 16.5, effective 1 November 2025. This move, aimed at offsetting the inflationary impact of higher minimum reserve requirements introduced in July 2024, underscores the central bank's ongoing struggle to balance currency stability with economic growth. By lowering the threshold, the SNB ensures that sight deposits above 16.5 times the minimum reserve requirement are remunerated at a discounted rate, effectively creating a tiered system to manage liquidity and discourage excessive capital inflows, as noted in a Simon‑Kucher analysis.

Central Bank Policy and Currency Valuation: A Delicate Tightrope

The SNB's decision to maintain the benchmark Sight Deposit Rate at 0%—despite six consecutive rate cuts since March 2024—reflects its dual mandate: to curb the Swiss Franc's (CHF) safe-haven strength and support export-driven sectors. Historically, the SNB has used negative interest rates as a tool to weaken the CHF. For instance, in 2015, it slashed the policy rate to -0.75%, a move that triggered a sharp depreciation of the Franc and reshaped global capital flows, as shown in a MarketInsiders report. Today, the central bank's “stealth negative rate” policy—where excess reserves above thresholds are penalized—achieves a similar effect without explicitly lowering the benchmark rate, according to a BMREducation analysis.

This approach has had mixed results. While the CHF has remained relatively stable in 2025, global investors continue to flock to Swiss assets amid geopolitical uncertainties and trade tensions. According to a MarketInsiders report, the Franc's appeal as a safe-haven currency has drawn capital inflows, even as the SNB intervenes in foreign exchange markets to counteract its strength. However, MarketInsiders also notes that the central bank's elevated balance sheet and constrained ability to conduct large-scale interventions mean that its influence over the CHF is waning.

Investor Behavior in a Low-Yield Environment

The SNB's policy adjustments have forced Swiss banks and investors to adapt to a low-interest-rate reality. Swiss banks, which previously relied on positive interest rates on SNB sight deposits to boost earnings, are now shifting toward fee-based revenue models. As Simon‑Kucher observes, this transition has been challenging, with commission income also declining due to reduced trading volumes and tighter margins. The negative rate environment has further exacerbated profitability pressures, pushing banks to prioritize cost-cutting and digital transformation.

For individual investors, the SNB's policies have reshaped asset allocation strategies. The Swiss Market Index (SMI) has outperformed in early 2025, driven by defensive sectors and strong U.S. market exposure. Meanwhile, alternative assets such as real estate and private equity are gaining traction as investors seek yield in a low-interest-rate world. Julius Baer analysts argue that Swiss equities and alternative assets will remain favored until the SNB's balance sheet normalization and potential rate hikes in 2026 provide clarity, according to MarketInsiders.

Global Capital Flows and the SNB's Long-Term Challenges

The SNB's tiered remuneration system is a microcosm of broader central bank struggles to manage capital flows in an interconnected world. By penalizing excess reserves, the SNB aims to stimulate interbank lending and liquidity, but this also risks pushing capital into riskier assets or offshore markets. BMREducation notes that negative rates have historically led to “capital flight” from Switzerland, with investors seeking higher returns in emerging markets or cryptocurrencies.

The central bank's ability to navigate these challenges will depend on its willingness to tolerate short-term volatility in the CHF. While the SNB forecasts modest GDP growth and sub-1% inflation for 2025, its policy rate is expected to remain near zero until at least mid-2026, per BMREducation. This prolonged low-rate environment could further erode the SNB's credibility as a currency manager, particularly if U.S. rate hikes or renewed trade wars reignite Franc strength.

Conclusion: A Policy at the Crossroads

The SNB's latest remuneration adjustment is a pragmatic but precarious response to evolving economic conditions. By fine-tuning thresholds rather than adjusting the benchmark rate, the central bank seeks to preserve its policy flexibility while mitigating the Franc's overvaluation. However, the long-term sustainability of this approach remains uncertain. As global capital flows continue to test the SNB's resolve, investors must weigh the risks of currency volatility against the opportunities in Swiss equities and alternative assets.

For now, the SNB's strategy appears to buy time, but it may not be enough to address the structural challenges of a low-yield, high-uncertainty world.