CoE validity for Subclass 500 in 2026: when an application becomes invalid

A Student visa (Subclass 500) application becomes invalid if no Confirmation of Enrolment (CoE) is provided at the time of lodgement, and it does not become safe once lodged: the CoE must still be valid when the Department of Home Affairs decides the application. A CoE is no longer valid if it is cancelled or the course is complete, and the published remedy is to attach a new CoE to your ImmiAccount. This reflects the Department of Home Affairs' official Student visa (Subclass 500) pages as at August 2026.

What makes a Subclass 500 application invalid on enrolment grounds?

The eligibility criteria state plainly that you must include the right evidence of enrolment with your application, "or your application will not be valid and can't be processed." Two conditions sit behind that: the course must be a full-time course registered on the Commonwealth Register of Institutions and Courses for Overseas Students (CRICOS), and you must provide a CoE for all intended courses when you apply. If you do not provide a CoE at the time of lodgement, the application is invalid.

Invalidity is a threshold outcome, decided before any assessment of your finances, English or genuine student answers. It is worth separating it from the second, later risk: a CoE that was valid when you lodged can stop being valid while the Department is still working through your file.

These criteria are published as general rules rather than as an assessment of any individual case, so where your circumstances sit at the edges, the Department's current wording should be treated as the deciding reference rather than any summary of it.

When does a CoE stop being valid?

The Department's test is not a printed expiry date. A CoE is no longer valid if it is cancelled, or if the course is complete. The step-by-step guidance adds the timing: your CoE must be valid both at the time of lodgement and when the Department decides your application.

The underlying requirement is continuous. You must maintain enrolment in a course of study to be eligible for a student visa, which is why the "Maintain Enrolment" step after you apply repeats the same rule: hold a valid CoE when the decision is made.

Situation	What the official pages say
CoE cancelled by the provider	No longer valid; a new CoE is needed to remain eligible
Course completed before decision	CoE is no longer valid; attach a new CoE if you still need a student visa
CoE valid at lodgement and at decision	Requirement met

What happens if your CoE lapses while the Department is still deciding?

If you finish your course but still require a student visa, you will need to attach a new CoE to your ImmiAccount. The same logic applies to a cancellation you did not initiate: the CoE is spent, and eligibility depends on a replacement being on file at the moment of decision.

Timing matters, because the Department may finalise your application based on the information you provided when you first lodged it. The pages recommend lodging a complete, decision-ready application and attaching anything missing as soon as you can; you can attach a maximum of 60 documents. Requests for further information should be answered promptly, and you do not need to wait until the deadline to respond.

Assume an applicant whose one-year course ends in June while a subclass 500 application lodged in February is still undecided. On the Department's wording, that CoE ceased to be valid in June. Unless a new CoE is attached to ImmiAccount before the decision, the applicant is not holding valid enrolment evidence at decision time.

Do you need a CoE for every course in a packaged application?

Yes. If you are applying for more than one course, you must include all CoE codes in the application form. The reason is practical: your visa period may only consider the duration of the course according to the CoE provided, so a missing code risks a visa that covers only part of your study plans.

Packaged courses must also link up. Course gaps must be less than two calendar months, unless the first course finishes at the end of the standard academic year and the next begins at the start of the standard academic year — the Department's own example treats a gap from roughly November to February, three to four months, as acceptable. The last course in the package is your main course of study, and it is what determines which financial and English language evidence you must provide.

Who can apply without a CoE?

Four categories are listed as not needing a CoE, each with its own substitute document:

Applicant	Evidence instead of a CoE
Enrolled full-time under a scholarship scheme approved by the Australian Minister for Foreign Affairs and Trade	Letter of support
Sponsored by the Australian Department of Defence	Letter of support
Secondary exchange student	Acceptance Advice of Secondary Exchange Student (AASES) form
Postgraduate research student who needs to stay in Australia while the thesis is marked	Letter from the education provider

One caveat applies to the sponsored categories: if the letter of support does not say it will meet the living costs and expenses of each secondary applicant, evidence of sufficient funds is also required.

What if your education provider defaults after you lodge?

Education provider default occurs when a registered provider closes, or cannot deliver your course because they have been sanctioned. If your provider defaults after you have lodged your subclass 500 application, you will need to provide a new CoE for a new education provider.

There is also a related fee concession. Students affected by education provider default who lodge a new student visa application within 12 months of the provider default day are not required to pay a visa application charge.

What else can stop a Subclass 500 application from being valid?

CoE is the most common failure point, but not the only one. When you submit, you must pay for yourself and any family members included, or provide proof of exemption, or the application will not be valid. The pages warn specifically against claiming a fee exemption you are not eligible for: the Department will not accept the application, and an invalid application outcome could affect your visa status and your ability to apply for a further visa if your visa has already expired.

If you are applying in Australia, validity also depends on holding an eligible substantive visa, or falling within the 28-day windows that follow holding a student visa, a special purpose visa or a dependent Diplomatic (temporary) visa, or being notified by the Tribunal that a cancellation has been set aside. A valid application must be made within the eligibility timeframe, as late applications are not accepted.

Frequently Asked Questions

Is a subclass 500 application without a CoE refused, or invalid?

It is invalid. The Department states that if you do not provide a CoE at the time of lodgement, the student visa application will be invalid, meaning it cannot be processed at all rather than being assessed and refused on its merits.

Does a CoE expire on a fixed date?

The published test is not a calendar date. A CoE is no longer valid if it is cancelled or the course is complete, and it must be valid both when you lodge and when the Department decides your application.

I finished my course while waiting for a decision. Do I need a new CoE?

Yes, if you still require a student visa. The guidance says you must maintain enrolment, and where a course is complete you need to attach a new CoE to your ImmiAccount so that valid enrolment evidence is on file at decision time.

Can I just add the CoE later if I forgot it at lodgement?

That is the risk to avoid. An application lodged without a CoE is invalid, and the Department may finalise an application based on what you provided when you first lodged it, so the pages recommend submitting a complete, decision-ready application.

Do packaged courses need a separate CoE each?

Yes. You must include all CoE codes in the application form, because your visa period may only consider the duration of the course according to the CoE provided. Course gaps must generally be under two calendar months unless they fall across the standard academic year break.

Which applicants can apply without any CoE?

Foreign Affairs or Defence sponsored students (letter of support), secondary exchange students (AASES form), and postgraduate research students remaining in Australia while a thesis is marked (letter from the education provider). Sponsored students may still need funds evidence if the support letter does not cover secondary applicants' living costs.