Greece has euro as its sole currency since 2002. There are eight euro coins, in denominations of two and one euros, then 50, 20, 10, five, two and one cents, and six notes: €5, €10, €20, €50, €100 and €200.
Banks ususally open Monday to Thursday 8:30am-2:30am and Friday 8:30am-2pm. Currency exchanges are common particularly in larger cities and in any touristed area. ATMs are easy to access , and you can withdraw money with better exchange rates by using credit and ATM cards. Mastercard, Visa, and Eurocard are widely accepted across the country in retail stores, hotels, and travel/transportation agencies
In restaurants a service charge is normally included in the bill and while a tip is not expected . It is always appreciated and should be left if the service has been good. Taxi drivers normally expect you to round up the fare, while bellhops who help you with your luggage to your hotel room or stewards on ferries who take you to your cabin normally expect a small gratuity of between €1 and €3.
The VAT is 23% in the mainland and 16% in Aegean Islands, If your purchase amount over or equals 120 euro, you should ask the shop staff for a Tax Free Form and fill in all the required fields in the block letters. Get a stamp in the Customs desk before your check in for your flight. Then go to a refund office . Present your stamped and completed Tax Free Forms to receive the refund in cash or to a credit card. But observe that at some airports a cash handling fee per "Form" will be charged should you require an Immediate Refund in cash.