The Swiss franc edged lower against the US dollar and the euro in early European trade on Tuesday, amid expectations the Federal Reserve would raise key US interest rates by a quarter point later in the session.
Economists generally expect the Fed's monetary policy setting committee to raise the federal funds rate to 1.75 percent at its meeting on Tuesday, following similar hikes in June and August.
The dollar traded at 1.2723/27 francs in early European dealing, compared with 1.2708/11 late on Monday, while the euro last changed hands at 1.5495/99 francs, compared to around 1.5441/46.