Cambodia runs on two currencies at once: the US Dollar and the Cambodian Riel (KHR). Understanding how they work together will save you confusion at checkout counters, markets, and tuk-tuk rides alike.
Dollars for big spends, Riel for small change
Hotels, tours, restaurants, and larger purchases are almost always priced in US Dollars, and dollars are accepted everywhere in tourist areas. Riel comes into play mostly as change for anything under a dollar — expect to receive a mix of small Riel notes back at markets or convenience stores, roughly at a rate of 4,000 Riel to $1.
ATMs, cards, and cash
ATMs are common in Siem Reap, Phnom Penh, and other major towns, and most dispense US Dollars directly. Credit cards are accepted at larger hotels and restaurants, though a 3% surcharge is common. In smaller towns, markets, and rural areas, cash — ideally in small denominations — is essential.
Tipping and bargaining
Tipping isn't obligatory but is genuinely appreciated for guides, drivers, and restaurant staff — a dollar or two per person per day is a common and welcome gesture. At local markets, gentle bargaining is normal and expected; in shops with fixed price tags, it generally isn't.
A simple rule of thumb: carry a stack of small US Dollar bills ($1, $5, $10) for daily spending, and let your guide or driver help you navigate change and prices — it's one small detail we always take care of for our travellers.