Should Aussies extend their Cambodia visa or apply for a fresh eVisa? It depends on shape. Tourist holders always need a fresh eVisa (the extension path ended November 2025). Business holders can extend in-country OR reapply — and the maths is genuinely close on some trip patterns.
Depends on shape. EXTEND if: you're on the Business eVisa (E-Class), you want continuous stay >30 days, you'd rather not leave and return. FRESH eVISA if: you're on the Tourist eVisa (cannot extend), you want to leave Cambodia for a side-trip and re-enter, or your stay needs are <30 days at a time over multiple visits. Tourist extensions ended in November 2025, so Tourist holders ALWAYS need a fresh eVisa for a longer/repeat stay ($80 USD / ~$122 AUD per application). Business eVisa holders can extend ($50–400 USD depending on length) OR apply fresh — the math depends on multi-entry need and trip count.
The shape of Aussie travel to Cambodia has changed in ways that make this decision harder than it used to be. Multi-country SE Asia loops are more common than single-country trips. Digital nomads doing month-on/month-off rotations between Phnom Penh and Bangkok have replaced the old steady three-month sit. Retirees are doing 12-month reconnaissance trials with quarterly trips home to see grandchildren. Each of those patterns puts a different answer on the extend-or-reapply question, and the wrong call costs you anywhere from $30 to a few hundred USD across the trip.
On top of that, the rules tightened in late 2025. Cambodia ended the long-standing Tourist eVisa in-country extension path in November 2025, leaving Tourist holders with a hard 30-day stay and no extension option. That removed half the decision for anyone on the Tourist class — but it also means the choice is now sharper for the Business class, where the in-country extension flow is still alive and worth knowing how to use. The other rule change worth flagging is that visa-class conversion inside Cambodia is not supported for Australians on the eVisa system, so the class you choose at the application stage is largely the class you live with for the trip — short of leaving Cambodia and re-entering on a different class, which is its own decision with its own admin.
This is the honest decision guide for Aussies in 2026 — when to extend, when to reapply, and how the maths actually shakes out across the most common trip patterns. If you have not yet booked the underlying visa, the Cambodia eVisa application is the place to start, and the Australia country pillar covers the wider eligibility picture for permanent residents and dual citizens.
There are really only four trip shapes that matter for this decision, and each one has a clean default answer. The matrix below collapses the noise into the four cases most Aussies actually fall into. Read across to the all-in cost column to see what your shape costs end-to-end on each path.
If you arrived in Cambodia on a Tourist eVisa, the question is structurally already answered. The Tourist class has had no in-country extension path since November 2025 — Immigration does not process Tourist extensions through agents any more, and there is no upgrade route to the Business class once you are inside Cambodia. Your only options are to leave on or before day 30, or to fly out and re-enter on a fresh eVisa for the next stay.
For most Aussie leisure travellers this is fine — a fresh Tourist eVisa is $80 USD (~$122 AUD), processed in 3 business days, delivered as a printable PDF by email. The Cambodia Tourist visa for Australians guide has the full application detail. If you suspect you might want to stay longer or do anything business-adjacent on the trip, the cleaner move is to apply for the Business class upfront before you fly out of Australia.
If you entered on the Business eVisa, you genuinely get to choose. Extension lengths of 1, 3, 6, and 12 months are all available through a Cambodian immigration agent in Phnom Penh or Siem Reap, and the per-month rate gets cheaper as the length goes up. The Cambodia Business visa extensions guide for Australians has the full mechanics on the underlying extension flow. The flip side is that nothing forces you to extend — you can also just leave Cambodia at day 30 and re-enter later on a fresh Business eVisa. Whether that's cheaper depends on how many re-entries you'd actually make.
The matrix gives you the defaults; the worked examples below show where the maths actually lands on the three most common Aussie patterns we see on the decision desk. All numbers are 2026 indicative pricing — Tourist eVisa $80 USD (~$122 AUD) all-in, Business eVisa $90 USD (~$137 AUD), and extension fees at mid-range Phnom Penh agent quotes.
Scenario one — Sydney consultant on a 90-day Phnom Penh project, continuous, no planned outs. She enters on the Business eVisa, the project runs day 1 to day 87, she has no reason to leave Cambodia mid-project. The clean answer is extend. She visits an immigration agent two weeks into the stay, lodges a 3-month single-entry extension at $120 USD, and finishes the project without leaving Cambodia. Total: $90 USD initial + $120 USD extension = $210 USD (~$320 AUD). The fresh-eVisa alternative would mean flying out at day 30, applying for a new Business eVisa from somewhere outside Cambodia, waiting 3 business days, and flying back in — at $90 USD per re-entry plus flight costs, the extension is cheaper by a wide margin.
Scenario two — Melbourne consultant doing 4 weekend trips to Bangkok across 6 months of Cambodia stay. She's in Cambodia for 6 months continuous with four planned outs. The right answer is Business eVisa plus 6-month multi-entry extension. She enters on the Business class at $90 USD, lodges a 6-month multi-entry extension at $230 USD ($200 USD base plus $30 USD multi-entry premium), and uses the multi-entry permission for each of the four weekend trips. Total: $90 USD initial + $230 USD extension = $320 USD (~$487 AUD). The fresh-eVisa alternative would be 5 × Business eVisas at $450 USD plus the admin of refiling four separate applications during the trip — the extension wins on both cost and convenience.
Scenario three — Brisbane retiree doing 2 trips a year of 2 weeks each to Cambodia, spread over a couple of years of reconnaissance. The right answer is just buy a fresh Tourist eVisa per trip. Two weeks per trip means no extension is needed at all — well under the 30-day Tourist stay. Cost per trip: $80 USD (~$122 AUD). Annual cost: $160 USD (~$244 AUD). Switching to the Business class plus extension flow for this shape would be overkill — more expensive, more admin, and you'd never use the extension. The Tourist class is the right product for short visits, and the Cambodia eVisa multiple-entry for Australians guide covers the maths on repeat-Tourist patterns in detail.
Two patterns stand out across the three scenarios. First, for any continuous stay over 30 days the extension flow on the Business class is the right answer regardless of cost — you cannot stay legally without it. Second, for stays of 30 days or less, even when there are multiple of them in a year, the fresh Tourist eVisa is almost always cheaper and simpler than going through the Business class. The Cambodia eVisa multiple-entry for Australians
Beyond cost, the two paths differ operationally in a way most Aussies underestimate. The extension is lodged from inside Cambodia, through an agent. You walk into an immigration agent's office in Phnom Penh or Siem Reap with your passport, a passport-style photo, your accommodation address, and USD cash. The agent submits the paperwork to the General Department of Immigration, holds your passport for 7–14 business days, and returns it with the extension stamp inside. You do not leave Cambodia during this period — in fact, you cannot, because the agent has your passport.
The fresh-eVisa path is the opposite. The eVisa portal expects you to be outside Cambodia at the time of application, and that is checked at entry. So to apply for a fresh eVisa you have to leave Cambodia first, find somewhere to wait the 3 business days of processing, and then re-enter once the approval PDF arrives in your email. Most Aussies do this from a hotel in Bangkok, Singapore, or Ho Chi Minh during a between-leg of the trip. That's a feature, not a bug, if you wanted a side-jaunt anyway. If you didn't, it's an extra flight you didn't need. The trade-off in plain terms: extension keeps you put with seven to fourteen business days of paperwork in the background; fresh eVisa needs you out of Cambodia for a few days but resets your stay permission cleanly each time. Aussies who want continuity pick extension; Aussies who already had a side-trip on the itinerary pick fresh.
The Phnom Penh and Siem Reap immigration agent ecosystem is mature and the paperwork is routine, but choosing the right agent matters. The Cambodia visa extension agents in Phnom Penh for Australians guide covers what to look for and what to walk away from. Either path requires the e-Arrival Card at every air arrival, which is worth getting right before each entry.
Trip plans change. The decision you made before flying is not the decision you have to stick with. Two real Aussie cases come up often enough that they're worth flagging — the upgrade and the downgrade.
The upgrade case — you applied for a Tourist eVisa for a 2-week trip, then realised you actually want to stay longer or do some work while you're there. There is no in-country conversion path: visa-class conversion inside Cambodia is not supported for Australians on the eVisa system. The fix is to leave Cambodia (a weekend in Bangkok or Ho Chi Minh is the standard move) and re-enter on a fresh Business eVisa, which gives you the 30-day initial stay plus the option to extend through an agent in-country afterward. Cost of the fix: $90 USD (~$137 AUD) for the new Business eVisa plus flights, plus whatever extension you take after re-entering.
The downgrade case — you bought a Business eVisa for a planned 3-month engagement, but plans changed and now it's just one week. No problem, and nothing to refund. The Business eVisa works fine for short trips too — the only thing you're losing is the per-month value of the upfront $90 USD if you never use the extension. For the next trip, if it's also short, just apply for a Tourist eVisa instead. Switching from Business to Tourist for the next trip is just a different application from outside Cambodia — no admin penalty.
One more case worth flagging: the long-stay strategy switch. If you find yourself rebooking Cambodia trips every quarter, the Cambodia frequent traveller visa strategy for Australians guide is worth a read — it covers the maths on switching from repeat-Tourist to Business-plus-extension as your trip count goes up. And if you're already in the long-haul camp at the 12-month end, the Cambodia 12-month visa extension for Australians piece has the dedicated breakdown.
The honest summary for Aussies: Tourist holders always need a fresh eVisa for any second stay, Business holders genuinely choose between extending and reapplying based on trip shape, the extension flow wins for continuous stays over 30 days, and repeat fresh eVisas win for spread-out short trips. The Do Australians Need a Visa for Cambodia pillar covers the basic eligibility frame if you haven't sorted the underlying visa yet, and Australia's Smartraveller advisory is the right first call from a government standpoint before you fly.
If you've not yet booked the underlying visa, the Australian apply page handles either class — Tourist at $80 USD (~$122 AUD) or Business at $90 USD (~$137 AUD) all-in, both 3 business days. Pick the class that matches the longest trip you might want this calendar year, not the trip in front of you. That single decision saves most of the extend-or-reapply admin downstream.
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; for a structured side-by-side evisa vs visa on arrival comparison, see the dedicated comparison page.
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