Swiss Financial System
SNB FX Intervention Mechanics
SNB FX Intervention Mechanics sits inside the operating framework through which the Swiss National Bank steers short-term Swiss-franc liquidity and money-market rates.
Definition
SNB FX Intervention Mechanics sits inside the operating framework through which the Swiss National Bank steers short-term Swiss-franc liquidity and money-market rates.
Operating mechanism
When the SNB buys foreign currency against francs, it creates CHF sight deposits; sales withdraw them. The balance-sheet effect links exchange-rate operations directly to domestic franc liquidity.
Why markets care
The instrument affects the path from the policy rate to SARON, repo pricing, bank liquidity and ultimately broader CHF funding conditions. Its importance therefore depends on both price and quantity.
What to monitor
Follow SNB operational announcements, sight-deposit data, SARON, repo conditions and changes to remuneration, collateral or counterparty rules. The framework can change without a change in the headline policy rate.