- Dependent visa age cutoffs vary from 18 to 24 across major immigration destinations.
- Canada and New Zealand offer age-lock protections during permanent residency applications.
- Marriage or financial independence can terminate visa eligibility regardless of the child’s age.
Families moving children across borders must track more than a birthday because dependent visa cutoffs range from 18 to 24 across the six countries examined. The decisive date can also depend on marriage, financial dependence, the parent’s application and whether the child already holds permission.
The shortest ordinary cutoff applies to new family applications in Ireland, where a child generally must be under 18 and unmarried. Australia can allow a dependent child to remain eligible until 23, while New Zealand separates temporary status at 19 from residence eligibility at 24.
Canada generally protects a child’s age below 22 when a permanent-residence application reaches the applicable lock-in date. The United States usually ends ordinary child status at 21. The UK uses a different test: an existing child dependant can often continue after turning 18 if the child has not formed an independent life.
Free toolCanada Express Entry Points CalculatorA birthday is only one trigger. Marriage, a qualifying partnership, a separate household, financial independence or having a child can end eligibility sooner. Full-time education can also matter, depending on the route.
The cutoff depends on the country and the immigration route
The main thresholds are not interchangeable. Temporary visas, permanent residence and new family-reunification applications can use different tests.
| Country | Main threshold | What may happen after the threshold | Age protection for permanent residence |
|---|---|---|---|
| United States | Under 21 and unmarried | Ordinary H-4, L-2 and similar child status generally ends | CSPA may protect some green-card applicants |
| Canada | Under 22, without a spouse or common-law partner | After 22, only disability-based dependency generally qualifies | Age is locked for most permanent-residence programs |
| United Kingdom | Under 18 for a first dependent application | Existing child dependants may continue after 18 if they remain dependent | Continued dependent status can bridge the child to settlement |
| Australia | Under 18 automatically, generally under 23 if dependent | After 23, disability-based dependency usually applies | No single universal age-lock rule |
| New Zealand | 19 or younger for ordinary temporary child visas | Residence applicants can qualify through age 24 | Residence age is generally assessed when the application is lodged |
| Ireland | Under 18 and unmarried for new ordinary family reunification | Adult applicants generally need serious medical or psychological dependency | No general Canadian-style lock-in rule |
The comparison covers ordinary economic, work, study and family routes. Refugee, international-protection, European Union free-movement, adoption and humanitarian categories can use different definitions.
Canada locks age, but not relationship status
Canada generally treats a child as a dependant when the child is under 22 and has no spouse or common-law partner. A person aged 22 or older can qualify only if financial reliance began before the 22nd birthday and a physical or mental condition prevents self-support.
The lock-in date does the work. In most permanent-residence programs, it is the date Immigration, Refugees and Citizenship Canada receives a complete application, although provincial, refugee and other programs can use an earlier event. A child who turns 22 after that date does not automatically leave the application.
Marriage or a qualifying common-law partnership remains a separate problem. Canada freezes age, not relationship status.
A child’s provincial position can also change before immigration eligibility ends. The age of majority is 18 or 19, depending on the province or territory. Someone who remains under 22 for family or permanent-residence purposes may still need an independent study permit to continue studying.
The UK preserves some existing dependent relationships after 18
A first UK dependent-child application normally requires the applicant to be under 18. The rule works differently for someone who already holds permission as the dependent child of the same parent.
That person can often continue after turning 18 if the permission remains valid, or if the application falls within permitted late-filing rules, and the child is not leading an independent life. The Home Office examines factors including a spouse, civil partner or qualifying partner, continued residence with the parent and whether the child lives away only for full-time boarding school, college or university.
University accommodation does not automatically end dependency. A permanent household with a partner can.
The child does not automatically need to switch to a Student visa at 18. An independent route becomes relevant if the continuing-dependent test is no longer met or the child wants status separate from the parent.
Australia tests dependency through the visa decision
Many Australian visa categories include a child who is under 18, or someone aged 18 or older but not yet 23 who remains dependent on the parent. At 23 or older, continued inclusion generally requires physical or cognitive limitations that prevent the person from earning a living.
After 18, families may need evidence of parental payments, shared accommodation, education enrolment, rent payments and tax records. Australia has no single rule that freezes age on the application date.
Some official visa instructions warn that a child who turns 23 during processing must satisfy the disability-based dependency rule by the time of the decision. Timing can therefore affect an application even after filing.
The Australian rule is narrower for a child included with a Student visa holder. The child must be unmarried and under 18, and Home Affairs cannot grant dependent student status if the child turns 18 before the application is finalised.
New Zealand separates temporary status from residence
Ordinary New Zealand temporary child visas generally require a child to be 19 or younger, single and financially dependent on the supporting parent. An 18- or 19-year-old ordinarily must also have no child of their own.
A Dependent Child Student Visa covers primary or secondary education. A child beginning tertiary study generally needs an individual Fee Paying Student Visa instead.
Residence provides a wider age range. A qualifying child can be 24 or younger and single, while applicants aged 21 to 24 must be totally or substantially reliant on an adult for financial support.
New Zealand generally assesses residence age when the application is lodged. Other conditions can remain under review during processing, including single status, having no children and continued financial dependence.
Ireland gives new adult applicants little room
Ireland’s family-reunification policy applying from June 12, 2026, generally requires a new dependent child joining an Irish or eligible non-EEA parent to be under 18 and unmarried.
An adult child ordinarily qualifies only when a serious medical or psychological condition makes independent life unsustainable and the child depends on the parent’s care for subsistence. Attending university alone does not satisfy the ordinary external route.
Ireland has no broad age-lock rule comparable to Canada’s. A parent with a 17-year-old child cannot assume that receiving an employment permit, beginning work in Ireland or collecting documents preserves the child’s age.
Timing also varies by sponsor category. General Employment Permit holders generally must complete one year of lawful work before applying to bring a spouse, partner or minor child. Critical Skills and certain other Category B sponsors can apply for qualifying nuclear-family members without that one-year wait.
A different process may assist some children already living in Ireland. ISD’s in-country Family Dependent process can cover some applicants under 23 who remain in full-time education, but it is distinct from the narrower route for a new adult child applying from abroad.
The United States usually ends ordinary child status at 21
U.S. immigration law generally defines a child as an unmarried person under 21. L-2 children of L-1 workers must remain unmarried and under 21, and similar limits apply to H-4, O-3, E-dependent and TD children.
A child who turns 21 ordinarily loses eligibility for the next extension or admission in the dependent-child classification. The Child Status Protection Act can protect some children in green-card cases, but it does not extend temporary H-4, L-2 or similar status.
That distinction can force a separate plan. A child may need F-1 status or another independent category even when the family expects CSPA to preserve eligibility for permanent residence.
Marriage can end eligibility even when age is protected
Age protection does not generally override relationship conditions. A derivative child in the United States must remain unmarried. Canada requires the child to have no spouse or common-law partner, while the UK examines qualifying partners and an independent family life.
Australia generally excludes a married child or someone in a de facto relationship. New Zealand requires the child to remain single. Ireland’s ordinary minor-child route requires an unmarried child.
The same distinction appears in permanent-residence cases. CSPA can protect age in qualifying U.S. cases, and Canada can lock age at a defined point, but neither protection preserves eligibility after a prohibited marriage or partnership.
Independent study status requires advance planning
An independent study route may be appropriate when temporary dependent eligibility is ending, the child is starting university, the child wants separate immigration status, the parent’s permission may expire before the course ends, or permanent residence will not protect temporary status.
The timing differs across the six systems:
- A U.S. H-4 or L-2 child normally needs an independent category before turning 21.
- A Canadian child may need a study permit at 18 or 19 to continue studying.
- A UK child may remain with the parent after 18 if the independent-life test is satisfied.
- An Australian student dependant must remain under 18 when the visa decision is made.
- A New Zealand child entering tertiary education generally needs an independent Student visa.
- An Irish child who cannot use the minor-child route may need an independent study route.
A separate study application can bring its own tuition, financial, insurance and work-right requirements. It is not simply an administrative conversion from family status.
The review should also check whether full-time study is required or merely evidence, whether the child can work under current or future status, whether the child appeared in earlier family applications, whether passport renewal affects a pending case and whether a change in circumstances must be reported.
The key dates are route-specific: 18 for some first applications and Australian student dependants, 19 for ordinary New Zealand temporary child visas, 21 for ordinary U.S. child status, 22 for Canada’s usual threshold and 23 for many Australian categories. New Zealand residence can extend eligibility to age 24, but financial-dependency requirements apply from 21.
