If your Cambodia trip will run past 30 days, the visa you enter on decides everything. The Tourist eVisa (Type T) caps hard at 30 days with no extension. The Business eVisa (Type E) is the only class you can extend in-country β 1, 3, 6, or 12 months. Here is how Americans pick correctly before they fly.

For any Cambodia stay that will run longer than 30 days, US citizens should enter on the Business eVisa (Type E), not the Tourist eVisa (Type T). The Tourist eVisa caps hard at 30 days and cannot be extended β the old auto-extension ended in November 2025. The Business eVisa is $90 USD all-in, approved in 3 business days, and is the only Cambodia visa you can extend in-country, in 1, 3, 6, or 12-month blocks arranged through a Cambodian immigration agent after you arrive. The choice is driven by how long you plan to stay, not by whether your trip is "business" in the ordinary sense β retirees, digital nomads, and long-stay travelers all enter on the Type E. You cannot change visa class once inside Cambodia, so this is the decision to get right before you fly.
If your Cambodia trip is going to run past 30 days, the most important decision you make happens before you ever board a plane: which visa class you enter the country on. Get it right and a six-month sabbatical in Kampot, a dry-season nomad stint in Siem Reap, or a year-long retirement trial in Kep all run smoothly on a single application. Get it wrong and you are looking at an expensive border run to Bangkok or Singapore, a fresh visa from scratch, and a hole punched in the middle of a stay you had carefully planned.
The reason it matters so much is a quirk of the Cambodian eVisa system that catches Americans out constantly: you cannot switch visa class once you are inside the country. The Tourist eVisa cannot be converted to a Business eVisa in-country. There is no upgrade button at an immigration office in Phnom Penh. The class you arrive on is the class you are stuck with until you leave Cambodia β which is exactly why the difference between Type T and Type E is the single thing every long-stay American needs to understand first.
This guide is the definitive walkthrough of that decision for US citizens in 2026 β what each class actually allows, why the 30-day wall on the Tourist eVisa is hard and final, how the Business eVisa extensions stretch a stay to a year or more, and the exact trip profiles that map to each class. If you want the pure label-by-label breakdown of the two visa classes, the Type T vs Type E explainer for US citizens is the companion piece, and for the umbrella reference on cost, documents, and processing, the Cambodia visa for United States citizens hub pulls it all together.
The Tourist eVisa (Type T) gives you a single entry and a maximum stay of 30 days from the day you arrive in Cambodia. That is the whole story. There is no longer-stay version of the Tourist eVisa, and there is no in-country extension. Until late 2025 there was a one-time 30-day auto-extension that long-stayers leaned on, but that path ended in November 2025 and is not coming back. In 2026 the Tourist eVisa is a flat, non-negotiable 30 days.
For a two-week temple-and-beach trip, none of this matters β the Tourist eVisa is exactly right, $80 USD all-in and approved in 3 business days. The problem starts the moment your real plan needs day 31. A retiree trialing life in Kampot for three months, a software engineer working remotely from Siem Reap for the dry season, a couple spending the winter island-hopping out of Sihanoukville β all of them hit the wall, and on a Tourist eVisa there is nothing on the other side of it but an exit.
And exiting is genuinely painful in 2026. All seven Thailand-Cambodia land borders have been closed since June 2025, so the classic cheap overland visa run to Thailand and back simply does not exist anymore. Your realistic options to reset are a flight out to Bangkok, Singapore, or Ho Chi Minh City, or a land crossing into Vietnam at Bavet. Either way you are paying for transport, losing days, and buying a brand-new visa on the way back in. That is the avoidable cost of entering on the wrong class.
The overstay route is not an alternative either. Cambodia charges $10 USD per day of overstay from day one, payable in cash at the airport when you leave, and an overstay of more than a few weeks can flag future applications. If you are weighing a short trip against a longer one and are not yet sure which side of 30 days you land on, our short trip vs long stay visa guide for Americans is built for exactly that judgment call.

Here is the honest comparison for a US citizen choosing what to enter on, with the long stay in mind. The first rows look almost identical β same approval time, same validity, same initial 30-day stay. The whole decision lives in the bottom three rows.
Read that bottom block carefully, because it is the entire reason this article exists. The two visas cost almost the same and process in exactly the same time. The $10 USD difference between them is the price of an airport coffee. What you are actually buying with the Business eVisa is the right to stay past day 30 β and that is the only thing a long-stay traveler cares about.
The most common misread among Americans is that "Business eVisa" means you need a business reason. You do not. Cambodian Immigration uses the Type E class for two overlapping groups: trips with a structured purpose, and trips that simply run longer than a normal vacation. A retiree who has never worked a day in Cambodia and never will still enters on the Type E for a six-month stay β purely because it is the only class that can carry the trip past 30 days. The label says "business"; the function is "long stay."
So the question to ask yourself is not "is my trip business?" It is "will I be in Cambodia for more than 30 days?" If yes, the Business eVisa is your entry class, full stop, regardless of what you plan to do there. The Cambodia Business eVisa for US citizens guide walks through who the Type E covers and exactly what the application asks for.

The Business eVisa enters you the same way the Tourist eVisa does β a single entry, an initial 30-day stay stamped at the airport. The difference is what happens before that 30 days runs out. While you are inside Cambodia, you arrange an extension through a Cambodian immigration agent, and that extension stacks on top of your initial stay. This is the mechanism the entire long-stay plan rests on, and only the Type E supports it.
Lodge the Business eVisa (Type E) before you fly β $90 USD all-in, approved in 3 business days.
Arrive on a single entry and get an initial 30-day stay stamped at the airport, the same as the Tourist eVisa.
About two weeks before your 30-day stay expires, give your passport to a Cambodian immigration agent in Phnom Penh or Siem Reap.
Pick a 1, 3, 6, or 12-month extension; all four are renewable and the 12-month is multi-entry.
The agent lodges the paperwork and returns your passport stamped, usually 7 to 14 days later.
Renew or stack extensions on the same original Business eVisa to carry a stay of 12 months or more.
Four extension lengths exist: 1 month, 3 months, 6 months, and 12 months. All four are renewable, so you can stack a 6-month extension on an earlier 6-month one and run a full year or more on the same original Business eVisa. The 12-month extension is also multi-entry, which matters if your long stay includes trips home to the US or weekend hops to Singapore or Bangkok β you can leave and re-enter without buying a new visa each time.
The practical rhythm is simple. You enter on the Business eVisa, settle in, and roughly two weeks before your initial 30-day stay expires you hand your passport to an immigration agent in Phnom Penh or Siem Reap. They lodge the extension paperwork and return your passport stamped, usually 7 to 14 days later. From that point your stay is governed by the extension length you chose. Start the paperwork too late and you risk slipping into overstay, so the two-week buffer is the number to remember.
Agent fees move with the local market, so we don't quote exact figures, but the shape is consistent: the 1-month extension carries the highest per-month rate, the 3-month and 6-month extensions hit the value sweet spot, and the 12-month is the cheapest per day for genuine long-stayers. The full mechanics β which extension to lodge, when, and what it costs against the eVisa itself β are covered in our guide to converting a Cambodia eVisa to a long-stay extension for Americans.

The cleanest way to choose is to find your trip in the list below. Everything 30 days or under is a clean Tourist eVisa. Everything that runs past 30 days β for any reason at all β is a Business eVisa. Here are the long-stay profiles we see most often from American travelers, and the class each one enters on.
The single decision rule that covers all of them: if there is any real chance your stay touches day 31, enter on the Business eVisa. The downside of over-buying is $10 USD; the downside of under-buying is a forced exit and a fresh application mid-trip. When the extension lengths themselves are the question β and especially the EB versus EG distinction that governs which extension you are eligible for β our guide to Cambodia EB vs EG visa extensions for Americans breaks down which path fits which long-stay profile.

The expensive error is almost always the same: an American who half-plans a long stay enters on the cheaper Tourist eVisa "to keep options open," then discovers around day 25 that there is no option to keep. The Tourist eVisa cannot be extended and cannot be converted. There is no in-country path from Type T to Type E. The only way to legally extend the stay is to leave Cambodia and re-enter on a fresh Business eVisa β which means a flight out, a fresh $90 USD application, and a gap in the middle of a stay that was supposed to be continuous.
Because all seven Thailand land borders are closed, that exit is not the quick bus-to-the-border-and-back run it used to be. You are flying to Bangkok, Singapore, or Ho Chi Minh City, or crossing into Vietnam at Bavet, then turning around. For a digital nomad mid-contract or a retiree who has just signed a six-month lease in Kampot, that is days of disruption and several hundred dollars in flights and visas β all to fix a $10 USD decision that should have been made before departure.
There is no penalty whatsoever for over-preparing. If you enter on the Business eVisa and your plans shrink to a two-week trip, you simply leave before day 30 and you have lost exactly $10 USD versus the Tourist eVisa. There is no minimum stay, no obligation to use the extension, no paperwork to unwind. The asymmetry could not be clearer: the cost of guessing high is trivial, and the cost of guessing low is a wrecked itinerary.
The one piece of the trip the visa class does not change is the e-Arrival Card. Whether you enter on Type T or Type E, every air arrival files the same 14-field e-Arrival Card within 7 days before the flight β it is mandatory and entirely separate from your visa. Print two copies of whichever eVisa approval you hold, carry a US passport with at least 6 months of validity, and have your e-Arrival QR saved to your phone. For the wider planning picture, the hub guide keeps the cost, documents, and processing facts in one place.
Next steps and related reading for US citizens: apply for your Cambodia eVisa when you are ready to lodge, bookmark the Cambodia visa for United States citizens hub as your canonical reference, read the full Type T vs Type E explainer if you want the label-by-label breakdown, and check the dedicated Cambodia Business eVisa guide for what the long-stay application asks for.
Bangkok in, Siem Reap out β but the land border's closed.
Read the 2026 update βClassic Indochina pairing. Phu Quoc beaches are visa-free for 30 days.
See the combo guide βOverlooked third stop on the Indochina loop.
Plan the Laos route βDid this guide help you?
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