The basic unit of Thai currency is the baht. Coins come in denominations of 25satang, 50satang, 1B, 5B and 10B. Paper currency comes in denominations of 20B(green), 50B(blue), 100B(red), 500B (purple) and 1000B(beige). Most banks can change foreign exchange but it can sometimes take significantly more time than the specialty exchange places. ATMs can be found in all cities and large towns. Credit cards are widely accepted at larger tourist-oriented restaurants, shopping malls and grocery stores, and shops catering to tourists, but most local stores do not accept them.
Tipping is not customary in Thailand. Some restaurants will add a service charge of 10% to your bill or the waiter may keep the small change from a larger bill. Tipping in taxis is not expected, but appreciated that just round up the bill. If you are satisfied with the services of a hairdresser, masseur or tour guide, appreciate it with a 20 to 100 baht gratuity.
The goods must be purchased from participating shops that display a “VAT Refund For Tourists” sign. On any one day, the goods purchased from any one individual participating shop must be at least 2000 Baht including VAT. Total VAT Refund eligible purchases must be at least 5000 Baht including VAT. When you purchase the goods, show your passport to the sales assistant and ask her/he to complete a VAT refund form, known as the P. P. 10, and attach the original tax/sales invoices to that form. Each P. P. 10 must show a value of 2000 Baht or more. Please note that a VAT refund will only apply if the goods purchased are taken out of Thailand within 60 days of purchase.