柬埔寨普通（E类）签证解析：面向美国人的EB、EG、ER、ES签证详解

The four extension tracks: EB, EG, ER, ES

Once you are inside Cambodia on the E-class visa, your extension is filed under one of four sub-categories. They all start from the same 30-day E-class entry — the letters only describe the reason you are extending. Think of the E-class visa as the trunk, and EB, EG, ER, and ES as four branches that grow out of it.

EB — the business and work track

EB is the extension most working Americans land on. It is the business-and-employment branch: salaried staff at a Cambodian company, contractors on a project, consultants on a multi-month engagement, and remote workers who are formally tied to a local employer. EB extensions come in 1, 3, 6, and 12-month lengths and are renewable, so an American on a year-long contract can stack them and stay continuously on the same original E-class visa. The 6-month and 12-month EB extensions are multi-entry, which matters if you need to leave for Singapore or Bangkok and return mid-stay.

EG — the general and job-seeker track

EG is the general-purpose branch — the one for Americans who are in Cambodia to look for work, set up a business, or stay on for a reason that does not slot neatly into the work, retirement, or student boxes. Digital nomads and remote workers paid from outside Cambodia frequently use the EG track because they have no local employer to anchor an EB extension. EG extensions also run in 1, 3, 6, and 12-month lengths, and the longer ones are the common pick for American remote workers doing an extended dry-season stay in Siem Reap or Phnom Penh.

ER — the retirement track

ER is the retirement branch, available to Americans aged 55 and over who are not working in Cambodia. It is the path for US retirees trialing a slower life in Kampot, Kep, or coastal Kep before committing to a full relocation. ER extensions are typically taken in 6 or 12-month lengths and are renewable year after year, which is why ER is the de facto long-stay route for older Americans. There is no formal pension-income threshold enforced at the agent stage in the way Thailand requires, which makes the Cambodian ER route notably simpler than its regional neighbors.

ES — the student track

ES is the student branch, tied to enrollment at a recognized Cambodian school, university, or language institute. An American studying Khmer, completing a semester abroad, or enrolled in a longer program converts the E-class entry visa into an ES extension once they have an enrollment confirmation from the institution. ES extensions follow the academic calendar and are renewable for the length of the course. The school usually helps coordinate the paperwork, which makes ES one of the more guided tracks.

The pattern across all four is identical: same $90 USD E-class entry visa, same 30-day arrival stay, then a different extension label depending on why you are there. The Cambodia EB visa extension explained guide goes deeper on the work track specifically, and the Cambodia retirement visa (ER) for Americans walks through the over-55 route step by step.

How to pick your E-class track at a glance

You do not choose the track when you apply for the eVisa — you choose it in-country when you extend. But knowing which one fits before you fly helps you plan the length and budget for your stay. Here is the working map we use with American travelers, matched to the reason for the trip.

A few quick rules of thumb. If you have a Cambodian employer or a structured work project, EB is the cleanest fit. If you are a remote worker, a freelancer paid from the US, or scoping a business and have no local employer to anchor the extension, EG is the usual route. If you are 55 or over and not working, ER is built for you. If you are studying, ES follows your enrollment. Most Americans on a long stay fall into either EB or EG, and the practical difference between them comes down to whether a Cambodian entity is sponsoring your work.

If your stay is genuinely a long one, the framing that matters is not the letter code but the total cost over the months you plan to be there. Digital nomads in particular should read the Cambodia visa for digital nomads and remote workers guide, which maps the EG and EB routes against typical remote-work stays and the in-country extension fees.

How conversion to an extension works in-country

The mechanics are the same for all four tracks. You enter Cambodia on the E-class (Business) eVisa, which gives you 30 days. Before that 30-day stay runs out, you convert it into an EB, EG, ER, or ES extension through a Cambodian immigration agent — not directly at a government counter. Most Americans use an agent based in Phnom Penh or Siem Reap. The agent takes your passport, files the extension paperwork under the matching track, and returns it stamped a week or two later.

What the agent needs varies a little by track. EB and EG are the lightest — generally just your passport and the extension fee, with EB sometimes asking for evidence of the employer relationship. ER asks you to confirm you are 55 or over. ES needs your enrollment confirmation from the school. None of these require the heavy sponsor-letter packs that Thailand or Vietnam demand for comparable long-stay visas, which is one of the reasons Cambodia has become a popular base for long-stay Americans.

Agent fees are a moving target — Cambodian agent pricing fluctuates with demand and the local market — so we do not quote exact figures here. As a working guide in 2026, the 1-month extension carries the highest per-month rate, which makes it poor value for anything beyond a few extra weeks. The 6-month and 12-month extensions deliver the best per-month value and are where most genuine long-stayers, retirees, and digital nomads land.

Timing is the part Americans most often get wrong. Start the extension paperwork at least 2 weeks before your initial 30-day stay expires. Cutting it closer risks an overstay, and the Cambodian overstay penalty is $10 USD per day from day one, payable in cash at the airport on exit. An overstay of more than a few weeks can also complicate future visa applications, so the safe move is to begin the conversion the moment you know you want to stay.

Common E-class mistakes Americans make

After thousands of E-class applications and extensions, the same handful of misunderstandings come up again and again. Knowing them before you fly saves a stressful scramble at the agent's office or, worse, at the airport on exit.

• Trying to apply for EB, EG, ER, or ES from the United States. You cannot. You apply for the single E-class (Business) eVisa online, then convert to the matching track only after you arrive in Cambodia.
• Entering on a Tourist eVisa and expecting to convert it. The Tourist eVisa (Type-T) cannot be extended or converted to any E-class track. If you might stay over 30 days or work, you must enter on the E-class (Business) eVisa from the start.
• Assuming the E-class visa itself lets you stay months. The visa grants 30 days on arrival. Everything beyond that comes from the in-country extension, which is a separate step filed through an agent.
• Picking the 1-month extension to save money on a long stay. The 1-month carries the highest per-month rate. For stays of several months, the 6 or 12-month extension is dramatically cheaper per day.
• Leaving the conversion until the last day. Start at least 2 weeks before your 30-day stay expires — agent processing takes 7 to 14 days, and an overstay costs $10 USD per day in cash at the airport.
• Forgetting the e-Arrival Card. It is a separate, mandatory step for every air arrival, completely independent of which E-class track you plan to follow.

If you realize after arriving that you entered on the wrong class — a Tourist eVisa when you needed the E-class, for instance — your options are limited. The cleanest fix is to apply for the right visa before you fly. The student route has its own enrollment-driven path worth reading if that is your situation: the Cambodia visa for American students guide covers the ES track in detail.

Putting the E-class together before you apply

Strip away the acronyms and the E-class family is simple. There is one visa to apply for — the $90 USD Business (ordinary, Type-E) eVisa, approved in 3 business days and delivered as a printable PDF by email. It gives you 30 days on arrival. If you want to stay longer, you convert in-country to the extension that matches your reason: EB for work, EG for general long-stay and remote work, ER for retirement, ES for study. Same trunk, four branches.

For the overwhelming majority of Americans reading this, the practical action is the same: apply for the E-class (Business) eVisa before you fly, enter Cambodia, and sort the extension once you are on the ground and certain which track fits. You do not need to decide the letter code today — you only need to enter on the right class. The Tourist eVisa is a dead end for any stay over 30 days, so if there is any chance you will linger, the E-class is the visa to buy.

Next steps for US citizens: apply for your Cambodia eVisa when you are ready to lodge, then browse the complete Cambodia visa types list for US citizens to see how the E-class sits alongside every other class before you commit to a track.