Cambodian visa on arrival treats every Australian child as a separate adult applicant — same $30 USD (~$46 AUD) booth fee, own photo, own e-Arrival Card, named guardian rules. Here is the full 2026 family guide for VoA, including the witnessed-consent-letter rule and why eVisa is the calmer route for Aussie families with kids.

Cambodia treats every Australian traveller — adult or child — as a separate VoA applicant. Each child needs their own passport, their own visa-on-arrival form at the booth, their own passport-size photo, and their own $30 USD (~$46 AUD) cash fee. There is no kids discount, no shared family form, and no waived photo for infants. A family of four pays 4 × $30 USD (~$184 AUD) in USD cash. Children under 18 must travel with their named guardian — one parent or a legal guardian — and if only one parent is travelling, the non-travelling parent should sign a witnessed consent letter to head off any questions from the booth officer. Every child also needs their own 14-field e-Arrival Card inside the 7-day window before flying. The calmer route for Aussie families is the Cambodia eVisa: $80 USD (~$122 AUD) per person all-in, Approved in 3 business days, Delivered as a printable PDF by email, and the family walks straight past the VoA queue at KTI, SAI or KOS.
The Australian families we walk through the Cambodian arrival hall tend to land in the VoA queue carrying one shared assumption — that the kids are somehow on a parent's application. They are not. Cambodia treats every traveller, regardless of age, as a separate VoA case. One passport, one photo, one form, one $30 USD (~$46 AUD) cash fee, one stamp. A family of four queues four times at the booth, not once.
The fee maths surprises Aussie parents the most. Four people at $30 USD each is $120 USD (~$184 AUD) in cash, on top of whatever you have set aside for tuk-tuks and tips on the first day. The photo step surprises them second — every kid, including a sleeping toddler, needs their own physical print at the booth. And the guardian-and-consent rule is the one that catches single-parent and split-parent families off guard at the desk.
This guide unpacks all of it: the per-child fee maths, the chemist photo plan, the named-guardian rule, the witnessed consent letter, and the e-Arrival Card per child. If you are still weighing the routes, the eVisa vs visa-on-arrival comparison and the Aussie school-holidays family trip guide are the wider-trip companions to this piece. The Cambodia eVisa Australian guide hub covers cost, documents, and processing time in one canonical write-up.
Cambodian Immigration does not run a family application at the VoA booth. There is no parent-with-child combined slip, no half-price ticket for under-12s, and no waived photo for newborns. The rule is the same one that applies to the eVisa — one passport, one application, one fee, one stamp. It applies at KTI in Phnom Penh, SAI in Siem Reap and KOS in Sihanoukville, the three Cambodian airports that issue VoA in 2026.
Every Australian child travelling on VoA needs their own passport-size photo handed to the booth officer with the application form — the spec is 35x45mm equivalent, plain white background, recent (within 6 months), face fully visible. There is an on-the-spot photo machine near the booth at each airport, but the camera is fixed at adult head height, costs $2 USD (~$3 AUD) per attempt, and is sometimes out of service. Wrangling a sleepy six-year-old in front of that machine is the part Aussie parents tell us they will never repeat.
The plan we recommend instead is doing the photos at an Australian chemist before flying. Chemist Warehouse, Priceline and Australia Post each run a passport photo service at most branches for around $15-20 AUD for a set of four prints. The technician will support a small child's head against the plain backdrop, and the print quality is consistent first time. Two prints per child go in the family envelope alongside the USD cash — one for the booth, one as a spare in case the officer rejects the first.
Order a set of four per child, not two
A set of four prints costs the same as a set of two at most Australian chemists. The extra two prints are useful if another regional visa is added to the trip — Vietnam VoA, Indonesian e-VOA, or a future passport renewal. Keep the prints flat in an envelope rather than folded in a wallet, since bent corners or creases get rejected at the booth.
Cambodian Immigration is genuinely lenient on the closed-mouth and eyes-open rule for infants and toddlers — the booth officer is not going to refuse a photo because a six-month-old has their mouth slightly open. The strict bits are the plain white background, the 35x45mm size, the recency, and the absence of glasses, hats or filters. A chemist photo set covers all of those without thinking. The on-arrival machine is the hardest route for under-fives in practice.
The dedicated VoA photo-on-arrival walkthrough covers the machine spec, the booth rejection reasons, and the airport-by-airport reliability of the photo machine if you do skip the chemist step. The chemist photo guide covers the Australian branch shortlist and how the Cambodian spec compares to the Australian passport brief.
Cambodian Immigration applies a long-standing rule that children under 18 must enter the country with their named guardian on the application — typically one parent or a legal guardian. The VoA form has a guardian field for each minor, and the booth officer can ask for proof of the relationship if the family group at the desk does not match. A standard Aussie two-parent family travelling together rarely sees any friction, but the rule is the one to know if your family circumstances are not the standard pattern.
The witnessed consent letter is not a formal Cambodian government template. A plain-English letter naming the child, the trip, the dates, the travelling parent or guardian, and signed by the non-travelling parent in front of a Justice of the Peace or another authorised Australian witness is sufficient. Most Aussie parents we work with print two copies, keep one with the family envelope and one in a separate bag in case the booth wants to retain a copy.
Smartraveller endorses the same practice
The Australian DFAT Smartraveller advice for travelling with minors broadly suggests the same precaution for any Aussie family crossing an international border — a witnessed letter from the non-travelling parent is the calmest answer to any guardianship question. The Cambodian booth officers we have observed accept this format without follow-up questions when the rest of the paperwork is clean.
The Cambodian e-Arrival Card is a separate digital form from the VoA, and it applies to every air arrival into the country in 2026 — adult, child, infant. The card has 14 fields, the submission window is the 7 days before flying, and the fee is $5 USD (~$7.50 AUD) verified through us. There is no shared family card. A family of four submits four cards, each tied to its own passport number, regardless of whether the family is going eVisa or VoA at the booth.
The practical workflow Aussie parents tell us works best is a single sit-down session at home roughly 5 days before flying. One adult opens a fresh browser tab per family member, fills the 14 fields each, and submits them in batch. The QR code response per card needs saving to phone wallet or print, since the booth officer scans each one. The most common mistake we see is parents trying to submit a single card for the family — the system rejects this immediately because the passport number field is unique per submission.
The 14-fields walkthrough and the couples-and-family shared-fill workflow cover the field-by-field detail, the QR saving rule, and the order most Aussie families find easiest to work through. Both guides assume one card per person, which is the rule.
For solo travellers the trade-off between eVisa and VoA is roughly even — the eVisa costs $80 USD (~$122 AUD) all-in versus $30 USD (~$46 AUD) cash at the booth, but the eVisa skips the airport queue and arrives Approved in 3 business days, Delivered as a printable PDF by email. For families the maths tilts heavily toward the eVisa, because the queue time at the booth multiplies with each child while the eVisa workload at home stays roughly fixed.
The family-of-four arrival routine on eVisa
A family of four with eVisas in their printed PDF folder lands at KTI, walks past the VoA queue, presents the four PDFs and the four e-Arrival QR codes at the immigration counter, gets four stamps in twelve to fifteen minutes total, and is in the tuk-tuk to the hotel before the family in front of them has finished their first VoA form. Checked end-to-end before it reaches Immigration is the family-trip difference.
Run this checklist a fortnight before flying and the VoA family workflow becomes a non-event. The eVisa route makes most of it disappear, but if you are committed to VoA, this is the prep that keeps the booth queue calm with kids in tow.
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 family children for quick answers, and use our glossary of Cambodia visa terms to decode any acronym in this guide.
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