Are there unofficial fees at the Cambodia–Vietnam land border, and how much do travelers usually get asked to pay?

In one recent self-organized visa-run report from Ho Chi Minh City, the Vietnamese checkpoint was crossed without any unofficial payment. The Cambodian border visa cost USD 35 per person, with USD 70 accepted for two travelers.

Recent traveler reports say that both the Vietnamese and Cambodian sides may ask for a cash bribe, meaning an unofficial payment on top of normal document checks and official fees.

Travelers also note that you need a Cambodia visa. You can arrange it online in advance or get it at the border, and that official visa payment is separate from any unofficial requests.

Earlier reports confirm that some travelers entering Vietnam from Cambodia are asked for an extra payment 'for the officer' at the border, meaning an unofficial surcharge at the land crossing.