At the time of this writing, 1 USD is about 4100 Riel. If you wish, you can change US dollars to Riel at most of 3, 4 and 5 star hotels. Do not exchange a lot of cash at one time because it is difficult to change it back for foreign currency. It is advisable to use small Riel for small transactions such as motorcycle taxis, postcards and other small purchases. Major credit cards such as Visa, Master and JCB are also accepted in many hotels in Siem Reap and Phnom Penh. Note that some restaurants and shops may charge 4 to 5% commission.

ATM machines
Canadia Bank and ANZ/Royal Bank have ATM machines in Sihanoukville, Battambang, Siem Reap and Phnom Penh. The machine disperses US dollar notes. Some machines are open 24 hours while some are open from 9 am to 9 pm. They are also available at Siem Reap and Phnom Penh international airports. In Phnom Penh, you can ATM machines at Total and Caltex gas stations, the Independence Monument, Sorya shopping center and Canadia Banks on Angdong Street, Sihanouk Boulevard and Charles de Gaulle Boulevards. In Siem Reap, the machines are located at the Old Market. However, do not rely too much on the ATM machines. It is best to have cash with you.

Traveler’s cheques
Cambodian Commercial bank, which has branches in Battambang, Phnom Pen and Siem Reap can purchase Traveler's Cheques and Bank note. Two percent commission fee or a minimum charge of one dollar is payable in US Dollar with the limit amount not over USD 2,000.00 (two thousand US Dollars) per day. Credit Cards applicable are Visa Card, Master Card and JCB as well as Siam Commercial Bank Silver and Gold Credit Card. The payment will be made in US Dollars. The bank and its currency exchange booths in front of the bank are open from 8 am to 3 pm from Monday to Friday – the currency exchange booths are also open on Saturday and Sunday from 9 am to 5 pm.