The official currency used in Punta Cana is the Dominican peso. You’ll find that there are ATM machines and foreign exchange facilities on the island, but it may be better to buy your travel money before you leave the UK. You can buy it online or at any Thomas Cook branch, find your nearest store here. Both methods are much cheaper than buying it at the airport. If you’re not sure how much money you want to take away with you, then why not check out the Thomas Cook Cash Passport?