While St. Croix is part of the U.S. Virgin Islands and uses the U.S. Dollar, you do not need to carry large amounts of cash, but having some is highly recommended for specific situations. Most major hotels, "sit-down" restaurants, and larger boutiques in Christiansted and Frederiksted accept credit cards (primarily Visa and Mastercard). However, cash is the "king" of the island for taxis, small local eateries, roadside "pate" stands, and souvenir vendors at the craft markets. Additionally, tipping for tour guides, boat captains to Buck Island, and bellhops is much easier with small bills. You will find plenty of ATMs in the main towns, but they can occasionally run out of cash during high-volume cruise ship days. In 2026, while mobile payments like Apple Pay are gaining traction in newer establishments, the local island culture still leans traditional; carrying about $50–$100 in small denominations ensures you won't be stuck when trying to buy a world-famous "Cruzan Confusion" cocktail at a beach bar or paying for a quick ride back to your resort.