The currency in Hungary is the Forint (HUF). Coins: 5-200 HUF bills: from 500 to 20,000 HUF.
With a debit card, you can get cash from the ATMs of all local banks. Credit cards are accepted in hotels, restaurants and shops. Look for the appropriate sticker on the door.
Currency exchange can be done at the numerous exchange offices, found especially in tourist areas.