Cambodia eVisa: 30-Day Stay vs 3-Month Validity Explained for Aussies
The 3-month validity is the window from issue date during which you must enter Cambodia. The 30-day stay is the period from entry that you can be inside the country. Two different clocks, two different end dates — here are the worked Aussie examples that make it click.
What's the difference between the 3-month validity and the 30-day stay on a Cambodia eVisa?
Validity is the 3-month window from the issue date during which you must enter Cambodia — miss it and the visa is void. Stay is the 30-day window from your actual entry date during which you can be inside Cambodia. They are two different clocks. A Cambodia eVisa issued on 1 April is valid until 1 July (you must arrive by then). If you arrive on 25 June, your 30-day stay runs from 25 June and ends on 24 July — even though that is past the validity end date, which is fine because validity only controls entry, not the stay itself.
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- Validity = the 3-month window from issue date during which you must ENTER Cambodia. If you do not enter by the validity end date, the visa is void and you start again.
- Stay = the 30 days from your entry date during which you can be IN Cambodia. The 30-day clock starts on the date the immigration officer stamps you in, not on the issue date.
- Worked example: visa issued 1 April, validity expires 1 July, you arrive 25 June, stay until 24 July — both windows respected.
- The two clocks run independently. You can enter on the last day of validity and still get the full 30-day stay from that entry date.
- Single entry means one bite of the 30 days. Leaving and returning on the same visa is not possible — you would need a fresh Cambodia eVisa.
- Tourist auto-extension ended November 2025. If your in-country plan is even potentially longer than 30 days, the Business eVisa is the only sensible class to start on.
Why Aussies get the validity-vs-stay distinction wrong
Open the approval PDF for a Cambodia eVisa and you will see two date fields that look like they should match: a validity end date around three months out from issue, and a 30-day stay duration. New applicants almost universally assume the visa expires on the validity end date, and that the 30-day stay must fit inside the three-month window. Both assumptions are wrong, and the misunderstanding causes a steady stream of Aussie applicants to either book the wrong flights or arrive at the airport convinced their visa is broken.
The clean way to read the document is to treat the two dates as two different clocks doing two different jobs. The 3-month validity is the entry window — Cambodia is telling you how long they will let you turn up at KTI, SAI, or KOS with this particular visa in hand. The 30-day stay is the in-country window — Cambodia is telling you how long they will let you remain inside the country once an immigration officer has stamped you in. They run on the same printed PDF but they measure different things, and they almost never end on the same date.
This guide walks through what each window actually controls, the worked examples that make it click for Aussie travellers, and the edge cases where the two clocks interact. If you only need the headline answer, the Cambodia tourist eVisa specialist guide and the Cambodia visa types explained piece cover the validity and stay rules per class. The processing-time guide explains how the 3-business-day approval slots into the three-month validity, and the application walkthrough is the step-by-step. The Cambodia visa for Australians hub covers cost, documents, and processing time in one canonical write-up.
Validity: the 3-month window to ENTER Cambodia
Validity is the deadline by which you must physically arrive in Cambodia using this particular visa. The clock starts on the issue date — the day Cambodian Immigration approves your application — and runs for three months. If you do not enter Cambodia before the validity end date, the visa is void. It does not roll over, you cannot 'save' it, and the $80 USD (~$122 AUD) or $90 USD (~$137 AUD) you paid is spent. You start over with a fresh application.
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Does the 30-day stay have to fit inside the 3-month validity window?
No. The 30-day stay is locked to your actual entry date, not to the validity end date. If your visa is valid until 1 July and you enter on 30 June, your 30-day stay runs from 30 June to 29 July — even though that ends 28 days past the validity date, you are entirely legal. Validity only controls when you must arrive; once you have arrived, the stay clock is independent.
When does the 30-day stay actually start?
The 30-day stay starts on the date the immigration officer at KTI, SAI, or KOS stamps your passport — your physical entry date — not the issue date on the PDF and not the date you booked the flight. Day 1 is the day you walk through the immigration desk. Day 30 is the last legal day in-country. Day 31 is overstay. There is no grace period for arriving late at night or for time-zone weirdness — the date stamped is the date that counts.
Can I apply for my Cambodia eVisa 6 months before my trip to be safe?
No — that is the most common Aussie mistake. The 3-month validity means the visa would expire before you arrive. The Aussie sweet spot is to apply 2-4 weeks before your flight. That puts the 3-business-day approval comfortably inside the validity window and gives you margin for any free resubmission if Immigration flags a correction. Applying earlier than 90 days out wastes the visa.
What happens if I miss the 3-month validity window?
The eVisa is void. There is no refund, no rollover, and no extension to the validity itself. You apply for a fresh Cambodia eVisa, pay again ($80 USD / ~$122 AUD for Tourist, $90 USD / ~$137 AUD for Business), and wait another 3 business days for approval. The free resubmission feature applies to corrections during the original application, not to expired-validity visas. Set a calendar reminder for the validity end date if your trip dates are flexible.
What happens if I overstay the 30-day in-country window?
Overstay fines apply from day 31 onward, charged at the airport on the way out, payable in USD cash. The fines escalate the longer you overstay, and a longer overstay also triggers an immigration record flag that can affect future Cambodia visa applications. The Cambodia overstay-fines recovery guide for Australians has the current fee structure. The fix is almost always to extend before day 30 — but only Business eVisas can be extended in-country, since Tourist auto-extension ended in November 2025.
Can I leave Cambodia mid-trip and come back on the same eVisa?
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