Money & Currency Exchange

The Thai Baht (THB, ฿) is the sole legal currency in Thailand, and understanding how money works here can save you hundreds of dollars during your stay. Thailand operates as a surprisingly dual economy when it comes to payments: street food stalls, taxis, markets, and small shops remain almost entirely cash-based, while malls, restaurants, and modern businesses have enthusiastically adopted QR-code payments through PromptPay — Thailand's national instant payment system that has made the country one of the most cashless-advanced in Southeast Asia. As a visitor, you'll need to navigate both worlds.

Where you exchange money matters enormously. Airport exchange booths at Suvarnabhumi offer notoriously poor rates — sometimes 5–8% worse than city center options. The gold standard for cash exchange is SuperRich (the green-signed original on Rajdamri Road, not to be confused with the orange-signed competitor), which consistently offers rates within 0.1–0.3% of the interbank mid-market rate for major currencies like USD, EUR, GBP, and JPY. Vasu Exchange on Sukhumvit Soi 7/1 and the exchange booths inside major BTS stations also offer competitive rates. Bangkok Bank and Kasikorn Bank branches give decent rates but charge a small commission. As a rule: never exchange at hotels, and bring crisp, undamaged bills — Thai exchangers routinely reject torn, marked, or older-series notes.

ATMs are everywhere in Bangkok, but they come with a sting: every Thai ATM charges a flat 220-baht fee per international withdrawal, on top of whatever your home bank charges. This makes it one of the most expensive ATM markets in the world for foreigners. The workaround is to withdraw the maximum amount (usually 20,000–30,000 baht depending on the bank) per transaction to minimize the per-baht fee. Aeon ATMs (found in most malls) offer a slightly higher limit. Be warned: when a Thai ATM asks if you want to be charged in your home currency ("Dynamic Currency Conversion"), always decline and choose Thai Baht — accepting the conversion means the ATM operator sets the rate, which is typically 3–5% worse. Consider opening a Wise (formerly TransferWise) multi-currency account before your trip; their Thai Baht transfers and card payments use the real exchange rate with a transparent fee of about 0.5%.