Returning to Cambodia on a Different Passport: The Aussie 2026 Guide

What the fresh application actually looks like under a new passport

The application form looks identical to a first-time Cambodia eVisa application. Same fields, same passport bio-data scan upload, same colour photo to the photo spec, same 3-business-day processing, same delivery as a printable PDF by email. There is no checkbox on the form for 'I have been to Cambodia before on a different passport' and there does not need to be — from the system's standpoint, the passport number you're submitting under is the canonical identity and the system has no prior record of it.

The one piece of careful work to do is the name field. Type the surname and given names exactly as they appear on the machine-readable zone of the new passport — uppercase, hyphens preserved, no expansions or contractions. Aussie applicants whose passport name shows a slight variation from their everyday name (a middle initial only on the passport, a hyphenated surname compressed, a maiden name retained in parentheses) sometimes type the everyday version instead and get pulled at the photo-stage check. The fix is a free resubmission with the corrected name; the trip is fine but the Aussie-timezone support team will be in touch.

The Cambodia eVisa passport bio scan guide for Australians has the exact scan specs, and the Cambodia eVisa name mismatch fix guide for Australians covers what to do if the name on your booking diverges from the passport. The Cambodia eVisa photo requirements guide for Australians covers the photo spec that has to come with every fresh application, even when the photo is identical to one you used last year.

The biometrics caveat — what new-passport identity does NOT reset

The passport-number-as-key rule is clean at the application stage but has one important limit at the entry stage. Cambodian Immigration runs biometrics on every air arrival — a face match against a passport-photo capture, and on some travellers a fingerprint check. Biometrics are person-level, not document-level. A face match can tie your new-passport entry back to a prior Cambodia visit on the old passport, even though the document numbers are completely different.

For the overwhelming majority of Aussies, this caveat has no practical effect. The biometric system surfaces the prior record silently; the officer at the counter sees a clean entry on the new passport and processes the trip normally. The system isn't comparing your old visa history for marketing or auditing purposes — it's looking for two specific historical flags. Flag one is an overstay on a prior visit that was not paid off at exit (the standard overstay penalty of roughly $10 USD (~$15 AUD) per day was not cleared). Flag two is a deportation or denial-of-entry record from a prior visit. Both are rare for Aussie travellers but do appear on the desk a few times a year.

If your prior visa history was completely clean — you arrived, stayed within your authorised period, and left on time — the biometric link surfaces nothing the officer cares about and the new-passport entry proceeds without comment. If your prior history included an unpaid overstay, the biometric flag is the moment Immigration brings it up. The honest path is to clear the overstay before applying on the new passport. The Cambodia overstay fines recovery guide for Australians walks through the cash-payment-at-exit flow and what to do if you left the country without paying.

The Cambodia overstay fines recovery guide for Australians covers what to do if you have a prior unpaid overstay and you want to return on a new passport. It is not a workaround — the biometric system will surface it — but the resolution path is well-trodden.

Fixing a passport-number mismatch on an already-issued eVisa

A specific edge case shows up enough times to deserve its own walkthrough. You applied for the Cambodia eVisa on Monday, your DFAT-renewed passport arrived on Wednesday, and you fly on Friday. The eVisa PDF has the old passport number on it; the passport you're physically taking has a new one. Cambodian Immigration scans the passport at entry, the system pulls up the eVisa record, the two numbers don't match, and the entry is refused at the counter.

The fix is a free resubmission with the new passport details — never travel on a PDF that shows the old number. Contact our Aussie-timezone support before you fly. The resubmission produces a fresh PDF with the new passport number, approved on a faster cycle because the underlying data is already validated, and the trip proceeds normally. The original $80 USD (~$122 AUD) Tourist or $90 USD (~$137 AUD) Business application fee is not charged again; the only cost is a few hours of correction time.

The Cambodia eVisa resubmission guide for Australians has the resubmission flow in detail, including what you need to upload and how long the corrected PDF typically takes. The same flow handles other late-stage corrections — wrong date of birth, wrong photo, wrong visa class.

Pulling the different-passport scenario together

The short version for Aussies returning to Cambodia on a different passport: it's a fresh eVisa application on the new passport number, $80 USD (~$122 AUD) Tourist or $90 USD (~$137 AUD) Business, approved in 3 business days, delivered as a printable PDF by email. Cambodia's MFAIC has no visibility on your prior visa history under the old passport, so you apply as a 'new' applicant. Biometrics at entry can still surface a prior record but only matter if that record includes an overstay, deportation, or fraud flag. The Cambodia eVisa application page handles all four scenarios — renewal, name change, second passport, emergency replacement — with the same form.

If you're a returning Aussie traveller more broadly — same passport, multiple trips — the Cambodia returning-traveller faster-flow guide for Australians and the Cambodia second-visit guide for Australians cover what's changed since your last trip. The Smartraveller advisory is the right first call from an Australian government standpoint before any 2026 trip.

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 eligibility for quick answers, and use our glossary of Cambodia visa terms to decode any acronym in this guide.