Thailand currency (Baht)
Thailand’s unit of currency is baht (Bt), which is equal to 100 satang. Currency notes are in denominations of Bt1000, Bt500, Bt100, Bt50, and Bt20. Coins circulating are Bt10, Bt5, Bt1 and 50 and 25 satang. At the current exchange rate, baht is around 41 to 1 US dollar. 

Exchanging your money to Baht
Major currencies can be exchanged to baht at most banks and at currency exchange booths which are stationed in main tourist areas. You will also find mobile currency exchange vans in the same tourist places. 

Automated Teller Machines (ATM)
When withdrawing money from your credit card, look for the VISA and MASTERCARD signs, otherwise, the machine do not accept credit cards. A minimal handling fee is applied against your account for each successful withdrawal. Do not entirely depend on these machines though as they sometimes run out of cash or go out of order.

Credit Cards and Travelers' Checks
Many currency exchange booths accept credit cards. Look for the VISA and MASTERCARD signs displayed at their windows. Expect a surcharge of up to 5 percent on every transaction. Most business establishments accept credit cards to pay bills.

Although there are rare occurrences of lost cash among travelers in Thailand other than personal carelessness, travelers' checks are the safest way to carry your money. Exchanging travelers' checks can be done in many locations. In most cases, better rates are even offered than your currency in cash. Your passport will be required for identification.

Western Union Outlets
This is a fast method to send or receive money. Cash is received in minutes after they are wired. Note that the charge is on a sliding scale so that sending large amounts will cost you less, than when you send small amounts.

For example, sending Bt1, 000 anywhere in the world (which is automatically converted to your own currency) will cost Bt320 as service fee, while sending Bt7, 000 will only cost Bt480, a slim difference of Bt160.

Banks
For money transactions that require a teller, banking hours are open from 8:30 a.m. to 3:30 p.m. – Monday to Friday. Other banks are half-day open during Saturdays. If you run out cash, it is possible to have your money wired directly from a bank in your home country to a bank in Thailand. You have to visit any bank here for details. Normally, it takes 2 to 5 working days to receive your cash and costs around 40 dollars as service fee.