In Phuket in 2026, the best strategy is a hybrid approach, though "Cash is King" remains the rule for local experiences. You should use your credit card (ideally one with no foreign transaction fees) for "established" businesses like hotels, high-end restaurants, department stores (e.g., Jungceylon), and pre-booked tours. However, you will absolutely need Thai Baht (THB) for almost everything else: night markets, street food stalls, small "mom-and-pop" shops, and local transport like Tuk-Tuks or songthaews. Digital payments like PromptPay QR codes are gaining traction among locals, but visitors usually find physical cash more reliable. A key tip for Phuket: always carry smaller bills (20, 50, or 100 Baht) for tips and small purchases, and use ATMs located inside banks or well-lit shopping centers to avoid card skimming. Be prepared for a standard 220 Baht fee at most Thai ATMs for foreign cards.