Vienna, Austria, uses the full spectrum of euro coins and notes common to other European countries such as Germany, Spain, France and Ireland. The euro became the official currency on January 1, 2002.
Between 1925 and 2002, except for a brief change between 1938 and 1945, Austria used the schilling. The schilling replaced the krone, which Austria used during the time of the monarchy. During World War II, the German reichsmark became the official currency but, after the war, the government returned to the schilling.
ATMs in Vienna spit out 100 euro notes when possible. This keeps the ATMs from running out of bills from giving out smaller notes. Unfortunately, the small shops around Vienna may not be able to break such a large bill. To avoid getting stuck with large bills, amounts like 90 or 290 euros should be requested to get smaller bills.
It is also a good idea to have some coins on hand when traveling in Vienna. Aside from the issue of breaking large notes, coins are helpful for shopping trolleys, newspapers and small trinkets. The coins run the gamut from 1 cent to 50 cents, and then 1 and 2 euros. As ATMs do not dispense coins, a trip to the bank may be in order.