Visa and Mastercard credit cards are widely accepted and you might be able to use your American Express card in some places, too. Some businesses, including the majority of supermarkets, require you to show a valid photo ID when you use your credit or debit card, and some might request your passport.

Yes, you can widely use your bank card (debit or credit) in Barbados, particularly if it is a Visa or Mastercard, which are the most commonly accepted networks. Most hotels, car rental agencies, supermarkets, and upscale restaurants in tourist hubs like Bridgetown, Holetown, and St. Lawrence Gap utilize modern chip-and-PIN or contactless terminals. However, Barbados still has a significant "cash culture" for smaller transactions: you will almost certainly need physical Barbadian Dollars (BBD) or US Dollars (which are accepted at a 2:1 fixed rate) for local buses ("ZRs"), street food vendors (like the famous Oistins Fish Fry), and small souvenir stalls. ATMs are plentiful across the island and are typically located in secure, air-conditioned rooms at banks or gas stations. It is a grounded peer recommendation to notify your bank of your travel plans beforehand to prevent fraud alerts and to carry at least two different cards in case one is declined. Be aware that some local merchants may ask for a valid photo ID (like a driver's license or passport) when you use a card for larger purchases to verify your identity.