美国公民申请柬埔寨商务电子签证所需文件：您实际需要哪些材料？

No invitation letter, no sponsor, no business paperwork

This is the section that saves Americans the most time. The single biggest misconception about the Cambodia Business eVisa is that it must require business documents the way a business visa elsewhere in the region does — an invitation, a sponsor, a contract. It does not. The Type-E application asks for identity and payment, exactly like the Tourist eVisa, and nothing about your work, your employer, or any Cambodian company.

• No invitation letter from a Cambodian company. Immigration does not ask who you are visiting or whether anyone in Cambodia is expecting you.
• No sponsor or proof of a registered entity. You do not need a local business to vouch for you, and you do not attach any company registration document.
• No employment contract or letter on letterhead. Your employer back home is never named on the Business eVisa application.
• No notarized statement of purpose. There is nothing to get notarized, translated, or couriered — so no notary or courier cost gets layered on top of the fee.
• No return flight, hotel booking, bank statement, or itinerary. The same things the Tourist eVisa skips, the Business eVisa skips too.
• No proof of funds or minimum balance. Cambodia does not ask a Business eVisa applicant to show money in an account.

The reason all of that is missing is the same as for the Tourist eVisa: Cambodian Immigration treats the visa-fee transaction itself as the commitment, and collects the bigger arrival picture separately through the e-Arrival Card in the week before you fly. So when a checklist somewhere online tells you to prepare an invitation letter for a Cambodia Business eVisa, it is describing a different country or an out-of-date process. Our guide to who actually needs the Cambodia Business visa (Type-E) explains why the category is broader than "paid work" — and still needs none of this paperwork.

How to take a compliant passport photo at home

You do not need a drugstore photo counter, a passport-photo booth, or any specialist gear. A phone camera and a plain white wall is the setup most American applicants use, and it produces a clean compliant photo every time when you follow a short routine. Most people do this in 90 seconds at a sunlit window.

Find a plain white wall — interior paint is ideal, but a closed white door or a white sheet pinned flat will do. Stand about 50 cm (roughly 20 inches) from the wall, not pressed against it, so there are no shadows behind your head. Face a window where daylight comes in sideways, not directly behind you, so your face is lit evenly and the wall stays white. Mid-morning or mid-afternoon is best. Avoid late evening, where warm artificial light yellows the wall.

Use the phone's main rear camera, not the selfie camera, and hold it in portrait orientation at eye level. Get someone else to press the shutter if you can — arm's-length selfies distort facial proportions and the auto-flagger catches that. Look straight at the lens with a neutral expression. No smile, no teeth, no laughing, and no overly serious face either. Just relaxed. Tuck your hair behind your ears if it covers your face. Take the glasses off. Remove any hat. Take five or six shots and pick the best one.

Save the file as a JPEG, under 2 MB, ideally 600×600 pixels or larger. iPhone and modern Android cameras default to a higher resolution than that — you may need to crop to a square or compress lightly before upload. Do not edit, filter, or beautify the image; the auto-flagger looks for natural skin texture and rejects heavily smoothed photos. If your first attempt does get flagged, our rundown of the most common Cambodia eVisa rejection reasons for US citizens shows exactly what trips applications up so the resubmission passes first time.

Passport bio-page scan and email tips

柬埔寨移民局需要读取您护照个人信息页上的所有信息——包括全名、护照号码、出生日期、签发日期和有效期，以及底部的机读区域。用手机摄像头扫描即可，无需使用平板扫描仪。基本要求是：扫描面平整、无反光、页面边缘完全显示在扫描范围内、所有文字清晰可辨。

Put the passport flat on a clean, plain, ideally dark surface — a wooden desk or a black notebook works well, because contrast makes the page edges clearer for the upload validator. Use daylight from a side window, not the camera flash. Flash bounces straight back off the passport laminate and washes the page out. Hold the phone directly above the open passport, parallel to the page, at about 30 cm (12 inches). Tap to focus on the text. If the laminate is reflecting light into the lens, tilt the passport a few degrees so the glare moves off to the side. The most common rejection on this step is a corner of the bio page outside the frame, so leave a thumb-width of margin around all four edges.

The email address matters more for business travelers than most realize. The approval is delivered as a PDF, and many corporate mail systems quarantine or strip PDF attachments from unfamiliar senders. If you put a locked-down work address on the application, the approved Business eVisa can land in a security hold you never see. Use a personal Gmail or Outlook account, then forward the PDF to wherever you actually want it. It is the difference between an approval that arrives in your inbox and one that silently disappears into an IT filter the morning you are trying to print it.

Edge cases — green-card holders, dual citizens, name changes

Most American business travelers fit the standard Type-E box cleanly. A few situations need a closer look before you start, mostly around which passport you use and what name appears on the application.

US green-card holders on a foreign passport apply on the passport they hold, not on their US residency. A British, Indian, or Filipino citizen living in the US on a green card applies as a Brit, Indian, or Filipino — not as an American. The Cambodian eVisa system reads nationality from the passport, and your green card has no bearing on it. Your eligibility, fee, and processing rules follow the passport, not the residency.

Dual citizens (US plus a second nationality) should apply on whichever passport they plan to enter Cambodia with — and use exactly the same passport for the exit. Switching mid-trip causes problems at the gate every time. The Business eVisa is tied to the passport number you applied with, full stop. There is no advantage to using a non-US passport for a Type-E; the document pack and the $90 fee are identical either way.

Name changes after marriage are the other common edge case. The name on the application must match your current passport machine-readable zone exactly — character for character. If you married recently and your passport still shows your previous name, apply in that name. If you already updated your passport, apply in the new name. Do not mix the two, and do not add a middle name the passport omits. If your passport is expiring inside the 6-month window, renew first — a US passport renewal currently runs several weeks for routine service, so do not leave it until the week before you fly. The Cambodia visa hub for US citizens is the place to confirm any rule before you start the form.

Putting the Business eVisa documents together

Five items, ten minutes, three business days. That is the entire Cambodia Business eVisa shape for Americans in 2026 — the same light pack as the Tourist eVisa, with no invitation letter and no business paperwork bolted on. The Business eVisa is $90 USD all-in, delivered as a printable PDF by email, with free resubmission if Immigration flags a correction and US-timezone support. If you want to see where that $90 sits and why it is $10 above the leisure option, the Cambodia Business eVisa cost guide for Americans breaks it down line by line.

One reminder before you start. The visa is one form, the e-Arrival Card is a different form, and both are mandatory for every air arrival in 2026. The visa application happens now; the e-Arrival happens within 7 days before you fly. Americans who plan for both at the start avoid the most common 2026 trip-stopper at the kiosk. When you are ready to lodge, the Business eVisa application for US citizens walks through every field.

Next steps and related reading for Americans: apply for your Cambodia Business eVisa when you are ready to lodge, bookmark the Cambodia visa guide for US citizens as the single canonical reference, confirm exactly who needs the Type-E in our Cambodia Business visa explainer, and check the budget in the Cambodia Business eVisa pricing guide for Americans.