At Restaurants: Generally, between 5–10 percent is fair, but not expected.
At Hotels: A service charge is included in the bill, so tip the concierge $10–$20 only if he makes you a special reservation. Hand the cleaning lady $5–$10 on the spot if she goes out of her way for you.
Guides and Drivers: Really good guides get about $40 per person per small group per day, drivers half that. With taxi drivers, tip 5–10 percent or round up the fare.
Dollars Accepted? Only tip in Swiss francs.