Your Child Is Turning 18 While a Family Visa Is Still Pending

Why this happens: the dependent child test runs twice

Whether a child qualifies as a "dependent child" for a family visa application is assessed both when the application is lodged and again when it's finally decided. If your family's visa is one that takes a long time to reach decision, a child who clearly qualified on the day you applied can fall outside the definition by the time the Department actually gets to your case, through no change in your family's circumstances other than the passage of time.

The age bands, under regulation 1.05A

Home Affairs sets out three bands (Migration Regulations reg 1.05A, explained in Form 1496i). Under 18, a child qualifies as dependent with no extra test. From 18 up to (but not including) 23, a child can still qualify if they are wholly or substantially reliant on the parent, or the parent's partner, for financial support to meet basic needs — food, clothing and shelter — or if they can't support themselves because of a physical or cognitive limitation. From 23 onward, only the physical-or-cognitive-limitation basis remains: financial dependency and full-time study on their own no longer qualify a child once they turn 23. In every band, the child must also be unmarried, not engaged to be married and not in a de facto relationship.

Why long queues turn this into a real crisis, not a hypothetical

This isn't an edge case. Home Affairs' own published queue data for some family-stream visas makes it a live risk for a meaningful number of families:

• Contributory Parent (subclasses 143, 173, 864 and 884): Home Affairs estimates about 15 years end to end for a new application (as at 31 May 2026).
• Parent and Aged Parent (subclasses 103 and 804, non-contributory): Home Affairs estimates about 33 years.
• Remaining Relative and Aged Dependent Relative visas: estimated processing time has been reported at approximately 50 years, reflecting a very small annual cap against a large queue.

A child who is a dependent 15-year-old at the time a parent visa application is lodged is, on these kinds of timeframes, entirely capable of ageing well past every relevant threshold before a decision is ever made, not because anything went wrong, but because the queue itself is that long.

What actually happens if a child ages out

The consequence is specific to the child, not necessarily the whole application: a child who no longer meets the dependent child definition at time of decision may lose the ability to qualify for inclusion in that family unit's visa. We were not able to confirm from available sources exactly how this plays out for every visa type and family configuration, so this is worth confirming directly for your specific visa and circumstances rather than assuming a single universal outcome.

Lodging a separate application for the child

Where it's available for the relevant visa type, lodging a separate, timely visa application for the child, rather than relying entirely on them riding along on a slow-moving parent or family application, is worth exploring, ideally well before any age threshold becomes a live concern. Whether this is available, and what it would involve, depends on the specific visa pathway and the child's own circumstances.

If a threshold age is approaching with a decision still pending

If your child is nearing 18 or 23 while a decision is still outstanding, it's worth getting advice on whether fresh evidence of financial dependency — or, once they're approaching 23, of a physical or cognitive limitation — needs to be submitted or updated before the decision is made, rather than assuming the evidence you provided at lodgement will still be treated as current.

Why early planning matters more here than almost anywhere else in this cluster

Once a child has actually crossed a relevant age threshold, the options narrow considerably and some may no longer exist at all. Advice sought at the time you're first lodging a parent or family application, planning around a known birthday against a known or estimated queue position, is materially more useful than advice sought after the fact. This is one of the few genuinely irreversible moments in the whole migration process where the calendar itself is the deciding factor.

When a registered agent genuinely helps

Structuring a family's applications with ageing-out risk in mind from the start, deciding whether a child should have their own separate, faster-moving application rather than relying on a parent visa queue measured in years, is squarely planning work an agent is positioned to help with. It's harder, and often too late, to fix well after the fact.

Will my child lose their place on our family visa application if they turn 18 before it's decided?

Not automatically — a child between 18 and under 23 can still qualify as dependent if they're wholly or substantially reliant on you for financial support to meet basic needs. Full-time study on its own doesn't make a child dependent. The risk is real, though, because the dependent child test is checked again at time of decision, not just at the time you applied.

How long do family visa queues actually run?

It varies significantly by visa type. Home Affairs estimates about 15 years end to end for a new Contributory Parent application, and about 33 years for the non-contributory Parent and Aged Parent visas. Remaining Relative and Aged Dependent Relative visas have been reported at around 50 years, reflecting a very small annual intake against a large queue.

Can I apply for a separate visa for my child instead of relying on our family application?

Where it's available for the relevant visa pathway, yes — this is worth exploring, particularly if your main application is likely to take years to reach decision. Availability depends on the specific visa type and your child's own circumstances, so this needs individual advice rather than a general answer.

What age counts as a 'dependent child' for Australian visa purposes?

Under 18 qualifies without further test. From 18 to under 23, a child can qualify if wholly or substantially reliant on the parent for financial support to meet basic needs — food, clothing and shelter — or if a physical or cognitive limitation stops them supporting themselves. From 23 onward, only the physical-or-cognitive-limitation basis applies; financial dependency and study alone no longer qualify a child. In every band the child must also be unmarried, not engaged and not in a de facto relationship (Migration Regulations reg 1.05A, Home Affairs Form 1496i).

Is there anything I can do once my child has already aged out?

The options are narrower once a threshold has already been crossed, which is why this is best addressed as a planning problem well before a birthday becomes urgent. Get advice on what, if anything, remains available for your specific visa type and family circumstances.