Alternatively, citizens of most nations can now apply for an e-Visa [3] online. The cost is US$25 (US$20 + US$5 processing charge) instead of the normal US$20, and you get the visa by e-mail in 3 business days. For the e-visa you will need one photograph of yourself. You can scan your passport photo (into .jpg format, please!) or take a passport photograph of yourself with a digital camera.

With the e-visa you will breeze through immigration. The e-visa will come back as a PDF file. You will then need to print out two copies (one for the entry and one for the exit). After printing out your two copies, cut out the e-visa part and put both copies into your passport.

For those entering by air, the e-Visa is valid at both Phnom Penh and Siem Reap airports. It’s cheaper to get your visa on arrival at either airport. However if you get a visa in advance (online or from an embassy/consulate) you do get to skip two lines at the airport: the line to apply for the visa, and the line at the cashier to pay the fee. Of course, if you checked luggage, you’ll probably have to spend the saved time waiting for your bag.

For those entering overland, do note that overland e-Visa entries are restricted to just three border crossings: Bavet (Svay Rieng) from Moc Bai (Tay Ninh Province, Vietnam); Koh Kong (from Hat Lek / Trat, Thailand); and Poipet (from Aranyaprathet, Thailand). However getting a visa in advance (online or from an embassy/consulate) is definitely the way to go in order to avoid the common scam of visa overpricing at border crossings (see Scam alert).