In Austrian restaurants there’s normally a service charge included in the bill. As for tipping – the custom is to round up the bill, which might turn out as more or less than 10 percent. For example, if the meal comes to €37 ($49) you’d say “Here’s €40, thank you.”
In bars it’s much the same – you’re told a drink costs €5.50 and you say “Take €6.”
In taxis, it’s customary to give an extra 10 percent over the meter fare to your driver.
In hotels, porters or bellhops should receive up to €1 ($1.32) per bag.