The official currency is the Trinidad and Tobago dollar (TT$). Banks will exchange a number of foreign currencies, but you’ll generally get better rates for US dollars or euros. Most restaurants, hotels, dive shops, car-rental companies and more established guesthouses accept credit cards. We quote rates as they are given in Trinidad and Tobago, whether it be in TT$ or US$.
Many restaurants add a 10% service charge to bills; if not, a tip of 10% to 15% is customary.