⚡ TL;DR: Quick Article Summary Best currency to bring: It is highly recommended to bring crisp, undamaged $50 and $100 bills (issued in 1996 or later). Small bills ($1–$20) are exchanged at much lower rates in Thailand. Where to exchange cash: Avoid exchanging money at banks and airports, where rates are 10–15% worse and ATM … Continue reading Currency Exchange in Thai Cities: Bangkok, Phuket, Pattaya