Riel is name of Cambodien money and they come in 50, 100, 200, 500, 1000, 5000, 10,000, 50,000 and 100,000 denominations, but the distinctive red 500 Riel note is the most commonly used
United States dollar cash is accepted everywhere and can easily be used instead of riel. As you will accumulate riel as change from payments you make in $USD, we recommend you change either nothing or very little (eg. $10USD) into riel upon your arrival in Cambodia. We advise you to carry $USD cash.
Please be aware that costs in Cambodia are significantly higher than in neighboring Asian countries. The cost of meals, transport, and shopping often takes tourists by surprise. Credit cards (Visa and Mastercard) can be used in only a limited number of shops and restaurants in Phnom Penh and Siem Reap. A number of ANZ Royal and Canadia bank ATMs are installed in Phnom Penh, Siem Reap, Battambang and Sihanoukville allowing you to withdraw money (in either USD or riel) from your overseas account. You should notify your bank if you intend to use your ATM card or Credit card whilst traveling overseas. Cash advances can also be obtained using Visa and Mastercards at exchange booths and banks in both Phnom Penh and Siem Reap