A short 30-day extension on the Cambodia Business eVisa can be lodged in person at the MFAIC office on Russian Federation Boulevard in Phnom Penh for $50 USD (~$76 AUD) cash. The stamp comes back as a sticker inside your passport in 2 to 3 working days — here is the Aussie walkthrough, plus when the agent route is the smarter pick.

Walk in to the Ministry of Foreign Affairs and International Cooperation (MFAIC) office at #3 Russian Federation Boulevard, Phnom Penh, between 8am–11:30am or 2pm–4:30pm on a weekday. Hand in your Australian passport, your current Cambodia Business eVisa, one recent passport-style photo and a completed extension form, and pay $50 USD (~$76 AUD) in clean cash at the counter. The application is processed in 2 to 3 working days, and the 30-day extension is returned as a printed sticker inside your passport. Note this only works for the Business eVisa (E-Class) — the Tourist eVisa has been a hard 30-day stay with no extension since November 2025. Most Aussies pay a registered Phnom Penh agent a $20–30 USD (~$30–46 AUD) service margin to handle the two MFAIC trips on their behalf.
This guide is for the Aussie traveller who is already in Phnom Penh on a Business eVisa, wants 30 more days, and is weighing the do-it-yourself MFAIC counter against the agent-on-Telegram option. If you have not yet booked the underlying visa, the Cambodia Business visa for Australians anchor walks through the upfront application, and the wider Cambodia Business eVisa extensions guide compares all four extension lengths (1, 3, 6, 12 months) side by side. For the canonical reference on cost, documents, and processing, see the Cambodia eVisa for Australian travellers hub.

The MFAIC counter rejects roughly one in five photos brought in cold. The two recurring fails are wrong background (anything other than plain white reads as off-spec) and wrong dimensions (anything in the 35mm × 45mm passport size from home doesn't quite match the 4cm × 6cm Cambodia counter expectation). The pragmatic fix is to grab a fresh batch at a Phnom Penh photo studio — there are several around the Russian Federation Boulevard area that do MFAIC-compliant prints for $3–5 USD (~$5–8 AUD), 10 minutes. If you would rather sort it before you fly, the Cambodia eVisa photo at chemist guide covers what works in Australia.
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首次赴柬埔寨旅行?以下是面向美国人的诚实首次旅客清单——签证、美元货币特点、安全现状、疫苗接种、寺庙着装规范,以及2026年新机场的实际抵达体验。
自2025年6月以来,泰国与柬埔寨之间的全部七个陆地边境已关闭,因此在2026年,美国人从泰国进入柬埔寨的唯一方式是乘坐飞机。以下是曼谷至暹粒和曼谷至金边航线的工作方式、登机前所需的柬埔寨电子签证,以及为何旧的波贝陆路计划已不再可行。
三种方式跨越柬埔寨首都与吴哥窟之间的195英里:15美元的特快巴士、45分钟的航班或缓慢的河流渡轮。以下是每种方式对美国旅行者的实际费用、所需时间以及哪种适合您的行程。


The Phnom Penh agent shortlist is the same one we keep for the longer 3, 6, and 12-month extensions — agents who handle Aussie cases routinely, hold your passport on a written receipt, and quote in writing rather than verbally. The full vetting brief, plus what to walk away from, is in the Phnom Penh agents extension guide, and the broader extension-vs-fresh-eVisa decision is laid out in the dedicated comparison piece.

Fourth, the overstay scenario. If you misjudge the timing, miss the counter window, and your Business eVisa expires before the extension is in your passport, the overstay penalty is roughly $10 USD (~$15 AUD) per day, paid in cash at KTI airport on exit, and the overstay is noted on your immigration record. The fix is not to overstay in the first place — lodge a week early. If it has already happened, the Cambodia overstay fines recovery guide for Aussies covers the practical steps to clean it up.
Bangkok in, Phnom Penh out — but the overland route is gone.
阅读2026年最新动态 →Easy combo for an extended Phnom Penh stay with a Saigon weekend.
See the Bavet guide →Quiet overland exit for the Indochina loop.
Plan the Laos route →Best stopover on the Sydney–Phnom Penh leg.
Sort the stopover →下次旅行去巴厘岛还是柬埔寨——或者两个都去?
Compare the two →The short summary for Aussies: the 30-day MFAIC extension at #3 Russian Federation Boulevard is real, costs $50 USD (~$76 AUD) at the counter, comes back as a sticker inside your passport in 2 to 3 working days, and is only available on the Business eVisa. Most Aussies pay a Phnom Penh agent a small service margin to skip the two counter trips. If your stay is closer to 90 days, the 3-month extension is the better-value bracket; if you only need a fortnight more and you are already in BKK1, the counter is the cheapest way through. For the wider apply-or-extend decision, the do-Australians-need-a-visa pillar and the visa cost guide for Australians cover the upstream numbers.
If you have not yet flown — or you have decided the extension hassle is not worth it and you would rather exit and re-enter — start with a fresh Business eVisa for $90 USD (~$137 AUD) all-in. Approved in 3 business days, delivered as a printable PDF by email, with Aussie-timezone support across the flight from Sydney or Melbourne. The how-to-apply walkthrough has the field-by-field detail.
Next steps and related reading for Australians: apply for your Cambodia eVisa when you are ready to lodge, bookmark our Cambodia visa hub for Australian citizens as the single canonical reference, skim the FAQ on Cambodia visa extending stay for quick answers, and use our glossary of Cambodia visa terms to decode any acronym in this guide.