For most clients, citizenship by investment isn’t just a personal decision, it’s a family one. A second passport that only covers the main applicant is far less valuable than one that secures mobility, education access, and security for an entire household. Fortunately, every major citizenship by investment programme allows dependants to be included, but the rules on who qualifies, at what cost, and for how long vary considerably.

Knightsbridge Group has structured citizenship applications for families of every size and generation, from young couples to multi-generational households applying together. As a fully licensed legal and immigration advisory firm with offices in Dubai, London, and Istanbul, we know that getting family inclusion right the first time avoids costly amendments later, particularly when children are approaching the age limits that most programmes impose. Here’s what you need to know.

Who Typically Qualifies as a Dependant

Across Caribbean and European citizenship and residency by investment programmes, the following categories are generally eligible to be included on a main applicant’s application:

Spouse or common-law partner, usually requiring proof of marriage or a qualifying period of cohabitation.
Children, typically up to age 18, though several programmes extend this to age 25 or beyond for full-time students who remain financially dependent.
Parents and grandparents, usually from age 55 or 65 depending on the programme, provided they are financially dependent on the main applicant.
Siblings, in a small number of programmes, if unmarried and financially dependent.

How Rules Differ by Programme

St Kitts & Nevis allows dependent children up to age 30 if enrolled in full-time education, one of the most generous age thresholds in the Caribbean, along with parents and grandparents aged 55 and above.

Grenada permits dependent children up to age 30 under similar education conditions, and its family-inclusive fee structure through the University of the West Indies Fund option can cover up to six family members under a single contribution.

Antigua & Barbuda extends dependent child eligibility to age 30 for unmarried, financially dependent children in full-time education, and includes parents and grandparents from age 55.

Dominica covers dependent children up to age 30 in education, plus parents and grandparents from age 65.

St Lucia allows dependent children up to age 30 in full-time education and parents or grandparents from age 65.

European residency and golden visa programmes, such as Portugal and Greece, generally cover spouses, dependent children up to 18 (or up to 26 for full-time students), and dependent parents, though the specific age and dependency tests vary by country.

Adding Dependants After the Main Application Is Approved

Most programmes allow dependants to be added after the primary applicant has already obtained citizenship or residency, such as a new spouse through marriage or a newborn child. This is generally a more straightforward process than the original application, though it still requires fresh due diligence and, in most cases, a separate processing fee per dependant. Newborn children in particular can often be added through a simplified registration process rather than a full application.

Why Getting This Right at the Outset Matters

Age thresholds are fixed at the time of application in most programmes, meaning a child who is 29 today but turns 30 during a delayed processing period may fall outside eligibility. Similarly, financial dependency for parents and grandparents typically needs to be evidenced with supporting documentation, not simply asserted. Planning the full family structure carefully before submission, rather than adding dependants piecemeal, is almost always the more cost-effective and lower-risk approach.

How Knightsbridge Group Can Help

Every family’s structure is different, and the right approach to including a spouse, children, or parents depends on ages, dependency status, and the specific programme rules in play. Knightsbridge Group’s immigration advisors will map out exactly who in your family qualifies, under which programme, and at what cost, then manage the full application to ensure no one is left exposed to changing age or dependency thresholds. Contact our team to plan your family’s citizenship strategy today.