Do not assume so. Review each person’s eligibility and the current official family process and obligations. Current official terms add a US$15,000 processing fee and US$1,000,000 gift for each eligible joining spouse or unmarried child under 21, including corporate cases; confirm individual eligibility and the operative instructions.
Track the household individually
Record relationships, ages and actual application status. The principal’s financial step does not establish every family member’s permission to work or reside.
The FAQ recommends initial inclusion of intended eligible joining relatives; do not rewrite that guidance as either a blanket promise or a permanent bar to later changes. Decide the inclusion question explicitly and write down the reasoning, including the amounts involved for each person, so the decision can be revisited if circumstances change. A payment plan cannot replace evidence for the immigrant category, and the relevant family relationship questions remain separate from a sponsor’s business decision.
Where a household's plan depends on a particular treatment of a child approaching adulthood, obtain written confirmation before committing funds, since a transfer of this kind cannot be reversed once the answer turns out to be different from the assumption. Where a child’s age is close to the limit, the individual assessment of any applicable statutory age-protection rules belongs at the start of the planning rather than at the point where a birthday has already passed.