What kind of money do they use in Belize?
The Belize dollar has a fixed exchange rate of two to one with the American dollar. Check current international exchange rates to find out how other currencies are valued against the Belize dollar
Most hotels, restaurants, tour guides and any other tourism related businesses will accept American dollars, usually giving change in Belize dollars. All major credit cards are also accepted in Belize, and some Belize banks will give cash advances on credit cards.
It is advisable to always clarify whether prices are being quoted in American dollars or Belize dollars since some unscrupulous businesses will try to charge American dollars when the normal price is actually in Belize dollars.

