Read the general life across the border overview
Hypothetical example: a household near Waterloo, Quebec begins planning when the elder child is nineteen and a half, and the process they are considering routinely takes longer than that child has. Dependent and derivative eligibility for children is bounded at twenty-one. The date is fixed, the calculation is technical, and it is the single fact most worth establishing precisely at the very start of a family plan. The decision is whether every person’s relationship, age, passport, status, and travel plan are ready on the same schedule. Hypothetical example: a hospital-sterilization manager plans a move with a child who will soon age out; the family needs a dated timeline rather than an assumption that the principal’s category solves it.
Get the calculation, not a reassurance
How a child’s age is treated differs between nonimmigrant dependent status and immigrant derivative categories, and in the immigrant context the calculation involves more than counting birthdays. That means a general statement that children under twenty-one are covered is not a sufficient answer for a child close to the limit. Ask for the specific calculation applied to the specific route and the specific expected dates, in writing, before committing the household to a plan. If the answer is uncomfortable, it is far better received while alternatives still exist than discovered midway through. Start with the principal category, then create one factual checklist per family member.
Know what dependent status allows in the meantime
The permissions differ by category and should not be generalised. In L-2 and E-2 dependent status a spouse is employment-authorized incident to status, while children hold dependent status and may attend school without that authorization to work. In TD status a dependant may study but may not work at all. A child approaching adulthood who expects to take a job needs their own basis, and a young adult continuing in education needs the correct status for that education. Write down, person by person, what each may lawfully do rather than assuming the household shares one set of permissions. Keep civil records and identity documents consistent across applications.
Plan the transition before it arrives
Where a child will pass the limit during an assignment, the options are usually a separate status of their own, a return, or a change in the family’s route, and each takes preparation. Student status has its own requirements and its own institutional steps. An independent work category has its own eligibility test. None of these can be arranged in the fortnight before a birthday. Identify the date at the start, put it in a calendar the whole household can see, and begin the alternative six to twelve months ahead so the transition is a plan rather than an emergency. Address study, work, and later travel questions using the status rules for that individual.
What else is on your mind?
Is a matching job title enough for TN?Can years of experience replace a degree for TN?Can my own U.S. company employ me under TN?Can my spouse work if I hold TN status?Editorial source review: 2026-09-07. General preparation guidance, not an individual assessment.