The official currency of Dutch St. Maarten is the Netherlands Antilles florin or guilder (NAfls.). In French St. Martin, it’s the Euro. But U.S. dollars and major credit cards are widely accepted. Please note that some businesses do not accept American Express or sometimes any credit cards. We suggest asking what forms of payment are accepted before being served. Traveller’s checks are not accepted anywhere on St. Maarten or St. Martin, per local bank regulations.