ATM cash machines come in handy for withdrawing local currencies in Bangkok. For withdrawals using international credit / debit cards there is a 150 baht fee. Aeon is the one bank which waives this fee but they are few and far between. The two easiest Banks found are the popular Bangkok Bank and Siam Commercial Bank. When not using ATM cards the banks also offer currency exchange in Bangkok. Not always the best rates.
The best rates for currency exchange in Bangkok are often found at Super Rich Money Exchange. Again the best rates with Super Rich are found at their head office which sits opposite Central World Mall in the central Silom Area. Other convenient branch locations can be found at the Chidlom and Phrom Phong Skytrain stations. For full list of locations and current exchange rates check the Super Rich website.
Location: Central Siam – BTS: Chit Lom – Price: Budget