Waiters appreciate tips in Salzburg, as they do the world over. Don’t assume that service is included in your bill. Feel free to ask, but it generally is not. (Note that the receipt may indicate charges of 10% and 20%. This is simply the breakout of taxes included in the menu prices.)
The standard tip is about five percent; ten percent is generous.
If you’re paying by debit card or credit card and would like to add a tip to the transaction amount, be sure to ask the server to add the amount when you give him or her your card. The practice of adding it into the total at the time you sign has not caught on here.
If for some reason you don’t add it to the charge slip, you may hand the amount in cash to the server or leave it on the table. The former is preferable, but of course the latter is acceptable.
Waiters carry a wallet with them, so if you pay by cash, your server will make change for you at the table. To signal that he should keep the change as a tip, say ‘Stimmt’ or, both of which mean, essentially, ‘That’s good.’