Adding children to your CBI application: rules, costs, and age limits (2026)

If you're evaluating Caribbean citizenship by investment (CBI) for your family, dependent inclusion is not a footnote—it's often the most consequential variable in your cost calculation and program selection.

Each Caribbean CBI program has its own rules: which family members qualify, at what ages, under what conditions, and at what additional cost. The differences are not minor. An adult child who qualifies under Antigua's rules may not qualify under St. Kitts'. A sibling who can be included under one program may be excluded, or included only on narrower terms, under another. And the ECCIRA agreement (the regional framework signed in September 2025, not yet in force) is set to tighten biometric and interview requirements for dependents once it takes effect.

This guide covers the CBI application rules for children and other dependents across Grenada, St. Kitts & Nevis, Antigua & Barbuda, and Dominica as of April 2026. By the end, you'll know which program fits your family structure—and what it will realistically cost.

Note: The ECCIRA (Eastern Caribbean Citizenship by Investment Regulatory Authority) agreement, signed in September 2025 but not yet in force, provides for common biometric standards and mandatory interviews for dependants aged 18+. Until it takes effect, each program sets its own rules for dependent biometrics and interviews—verify the current requirements with a licensed authorized agent before submitting an application.

Key takeaways

• Grenada allows adult children under 30 who are supported by the main applicant or spouse, parents/grandparents (each one aged 55 or under adds $50,000), and siblings who are 18+, single and with no children, at $75,000 each
• St. Kitts allows children aged 18–30 in full-time education and fully supported by you; no siblings; parents aged 55 or over who live with you and are fully supported by you
• Antigua has one of the broadest sibling policies in the Caribbean, allowing the main applicant's siblings as dependents—a meaningful advantage for families with strong multigenerational ties
• Dominica allows children aged 18–30 in higher education and fully supported by you, and parents and grandparents over 65
• Government fees per dependent run from nothing for young children to about $9,000 for an adult, before any contribution top-up for larger families and before Grenada's $75,000 sibling charge
• Children receive full citizenship—same passport, same rights, no age-out once granted
• Once the ECCIRA agreement is in force: common biometric standards and mandatory interviews for dependants aged 18+; until then, each program sets its own rules

Who this is NOT for

This guide is not the right starting point if:

• You have minor children and simply want to confirm they're included. Minor children under 18 are included as standard dependents across all four programs. The complexity addressed here is for adult children, siblings, and extended family.
• You're evaluating EU residency-by-investment programs. The rules here are specific to Caribbean CBI programs.
• Your family situation involves contested custody, recent adoption, or unusual guardianship. These scenarios require direct engagement with an authorized agent—the program rules have provisions, but case-by-case guidance is essential.
• You're looking for a program that includes adult siblings. Antigua has one of the broadest sibling policies in the Caribbean, and Grenada takes siblings on narrower terms: 18 or older, single and with no children, at $75,000 each.

How dependent inclusion works in Caribbean CBI

Caribbean CBI programs allow the main applicant (the "principal applicant") to include qualifying family members as dependents on the same application. Dependents receive full citizenship alongside the main applicant—they don't apply separately, and their citizenship is not conditional on the main applicant's continued status.

The key variables are:

1. Who qualifies — relationship types (children, siblings, parents, grandparents)
2. Age limits — when adult dependents stop qualifying
3. Conditions — full-time education, financial dependency, co-residence
4. Additional costs — due diligence, processing, and government fees per dependent
5. Document burden — what each dependent must provide

Each program defines these independently, and the rules are not uniform across the region.

Age limits and eligibility by program

Grenada

Grenada's program is one of the more flexible for adult dependents.

• Minor children: Under 18, included as standard dependents
• Adult children: 18–29, if supported by the main applicant or spouse (documented evidence required)
• Parents and grandparents: can be included; additional government fees apply, and each one aged 55 or under adds $50,000
• Siblings: Eligible if 18 or older, single and with no children, at $75,000 each

Grenada does not impose a full-time education requirement for adult children—financial dependency is the qualifying condition. This distinction matters: an adult child who has graduated but is not yet earning independently may still qualify under Grenada's rules where they wouldn't under St. Kitts' or Dominica's.

St. Kitts & Nevis

St. Kitts has one of the oldest and most established CBI programs. Its dependent rules are more conservative.

• Minor children: Under 18, standard inclusion
• Adult children: 18–30 if in full-time education and fully supported by the main applicant (enrollment letter required)
• Parents: 55 or over, living with and fully supported by the main applicant (parents of the spouse qualify too)
• Siblings: Not eligible

The full-time education requirement for adult children is strictly enforced. A gap year, part-time enrollment, or graduation before the application completes can disqualify the dependent. Plan application timing accordingly if you have adult children in education.

Antigua & Barbuda

Antigua has the most expansive dependent eligibility in the Caribbean—particularly for families with extended family structures.

• Minor children: Under 18, standard inclusion
• Adult children: up to age 30, if financially dependent on the main applicant (the same condition applies to every child from 0 to 30)
• Siblings of the main applicant: Eligible as dependents — one of the broadest sibling policies in the Caribbean. Grenada also takes siblings, but only if they are 18 or older, single and with no children, at $75,000 each.
• Parents and grandparents: 55 or over and financially dependent on the main applicant, with additional fees

The sibling inclusion provision deserves emphasis. If your family situation includes an adult sibling whom you want to provide citizenship alongside yourself, Antigua has one of the broadest sibling policies in the Caribbean. Additional due diligence fees apply for siblings, and they must meet the standard eligibility criteria (no disqualifying criminal background, clean due diligence). But the option exists on Antigua's standard terms, where Grenada takes only siblings who are single with no children, at $75,000 each.

Dominica

Dominica's program is typically the most affordable Caribbean CBI option and has a straightforward dependent structure.

• Minor children: Under 18, standard inclusion
• Adult children: 18–30 if in higher education and fully supported by the main applicant or spouse
• Parents: 65+ can be included
• Grandparents: 65+ can be included
• Siblings: Not eligible

Dominica's affordability extends to dependent fees: its due diligence fee of $4,000 for each dependent aged 16 or over is among the lowest in the region.

Age limit comparison table

Dependent costs by program (approximate 2026)

Dependent costs in CBI applications have two main components: government fees (due diligence and processing) and in some cases investment top-ups (some programs require additional investment amounts per dependent). The figures below are the published government fees per dependent, excluding the main contribution, passport fees and agent fees.

Grenada

• Dependent aged 17 or over: $9,000 (application $1,500, processing $1,500, due diligence $5,000, interview $1,000)
• Child under 17: $2,000 (application $1,500, processing $500); no due diligence fee
• Each dependent beyond the third adds $25,000 or $50,000 to the contribution
• Parents/grandparents: the same $9,000 in fees as other dependents aged 17 or over; each one aged 55 or under adds $50,000
• Siblings (18+, single, no children): $75,000 each

St. Kitts & Nevis

• Dependent aged 16 or over (including a student child aged 18–30): $7,500 due diligence
• Parents aged 55 or over: $7,500 due diligence
• Children under 16: no due diligence fee. The $250,000 SISC covers up to four people; each additional dependent adds $25,000 (under 18) or $50,000 (18 or over)

Antigua & Barbuda

• Child under 12: no due diligence fee; child aged 12–17: $2,000 due diligence
• Financially dependent child aged 18–30: $4,000 due diligence
• Siblings, parents and grandparents: the same $4,000 due diligence fee as other dependents aged 18 or over
• Note: the $230,000 NDF covers a family of up to four with no extra contribution. The processing fee is $20,000 for a family of up to four (against $10,000 for a single applicant), plus $10,000 for each dependent beyond that

Dominica

• Dependent aged 16 or over: $4,000 due diligence; certificate of naturalisation: $500 per person; the EDF contribution itself rises with family size
• Dominica's per-dependent due diligence fee is among the lowest in the region

Dependent cost comparison table

Important: The table shows government fees per dependent within each program's base family size. Dependents beyond it add contribution top-ups (see above), and Antigua adds $10,000 in processing for each dependent beyond four. Actual costs also depend on the investment route (donation vs. real estate), agent fees, legal fees, and any program fee adjustments that may occur. Always request a full itemized cost breakdown from an authorized agent before proceeding.

Example: Antigua's sibling inclusion

Say your family is evaluating Caribbean CBI with a specific requirement: as the main applicant, you want to include your younger sister, who is 24, financially dependent, and studying abroad. Reviewing Grenada and St. Kitts settles it quickly: St. Kitts does not take siblings, and Grenada would add $75,000 for her.

Antigua is the best fit. Yes, the additional due diligence fee for sibling inclusion adds cost. But the alternative is your sister applying for her own separate CBI program later—at far greater expense and without the family coordination benefit. Antigua's sibling provision makes the family application coherent in one step.

The key lesson: program selection for families should start with eligibility mapping, not cost comparison. Cost differences often dissolve when you account for who can actually be included.

Example: adult-child timing

Say you apply under St. Kitts with your 24-year-old son as a dependent and run into a problem six months into the application process. Your son has just graduated—school enrollment has ended—making him ineligible as a student dependent. The application is for St. Kitts, which requires full-time enrollment. Had you applied two years earlier or structured the timeline differently, your son would have qualified.

You end up including him as a separate application at full cost. The lesson: if you have adult children near an age or education threshold, map the timeline before selecting a program. Grenada's financially-dependent provision—which doesn't require enrollment—might have been the better fit.

Document requirements for children and dependents

Standard documents for all dependents

• Birth certificate — original or certified copy, apostilled, with certified translation if not in English
• Valid passport — current, with sufficient validity
• Police clearance certificate — for all applicants over 16 (some programs use age 12 as the threshold)
• Medical certificate — health clearance from a licensed physician
• Passport photographs — specific format requirements vary by program

Additional documents for student dependents (adult children)

• Official enrollment letter from accredited institution confirming full-time status
• Proof of current enrollment — transcript, student ID, or institutional letter dated within the application window
• Evidence that enrollment continues — for applications with longer timelines, updated letters may be required

Additional documents for financially dependent adults

• Financial dependency declaration — notarized statement from main applicant
• Bank statements — showing main applicant's financial support of the dependent
• Evidence of shared residence or regular financial transfers — bank transfer records, utility bills, or similar

Additional documents for parent/grandparent dependents

• Proof of relationship — birth certificates establishing the chain of relationship
• Evidence of dependency if applicable
• Medical certificates — often more detailed for older dependents

Adoption and step-children

Legally adopted children are treated as biological dependents across all four programs, provided adoption documentation is complete:

• Adoption decree or order (apostilled)
• Birth certificate of adoptive parents
• Evidence of legal completion of adoption process

Step-children are generally accepted with:

• Marriage certificate connecting the main applicant to the child's parent
• Guardianship or adoption documentation depending on program requirements

Rules vary by program and by how the adoption or step-relationship was legally established. If your family includes adopted or step-children, verify the specific requirements with an authorized agent—don't assume equivalence to biological dependents without confirmation.

Document checklist for children (summary)

• [ ] Birth certificate (apostilled, translated)
• [ ] Valid passport (all dependents)
• [ ] Police clearance / criminal background check (16+ or 12+ depending on program)
• [ ] Medical certificate
• [ ] Passport photographs (program-specific format)
• [ ] School enrollment letter (if qualifying as student dependent)
• [ ] Financial dependency declaration + evidence (if qualifying as financially dependent adult)
• [ ] Adoption decree or guardianship documentation (if applicable)
• [ ] Biometrics enrollment (if the program requires it — confirm current requirement with agent)

What citizenship means for your children

This is worth stating clearly, because it's what makes CBI family applications meaningfully different from residency programs.

Children receive full citizenship. Not conditional status, not a residency permit—the same passport as the main applicant, with identical rights in the issuing country.

Citizenship is permanent once granted. There is no age-out. A child who is granted Grenadian or Antiguan citizenship at age eight does not lose it at 18 or 25. It remains valid indefinitely.

Minor children's passports are typically issued with five-year validity (versus ten years for adult passports). They are renewed in the standard way.

Children can pass citizenship to their children. The citizenship is heritable, subject to program-specific rules on citizenship by descent. In practice, Caribbean CBI citizenship acquired through the investment program can generally be passed to the next generation born after citizenship is granted.

Practical benefits for children:

• Visa-free or visa-on-arrival travel to the countries the program passport covers (Grenada: ~148 destinations; Antigua: ~154 destinations; St. Kitts: ~157 destinations; Dominica: ~144 destinations)
• The right to live and work in the issuing country
• Access to the country's public education and healthcare systems
• For Grenada specifically: eligibility for the US E-2 investor visa treaty, which is available to Grenadian citizens after three years' domicile in Grenada for citizens by investment

Education and career implications: A second passport from a Caribbean CBI program can open university application pathways in countries that extend preferential admission or fee treatment to citizens of program countries. Work visa applications to third countries also benefit from the additional passport. These are longer-term considerations, but they are real.

ECCIRA and dependents: what the regional agreement will change

The Eastern Caribbean Citizenship by Investment Regulatory Authority (ECCIRA) agreement was signed in September 2025 but is not yet in force. Until it is, each program sets its own rules; once it is, it applies only to applications made after that date. What it provides for that affects dependent applications:

• Common biometric standards: The agreement provides for common biometric data standards across the five programs. Confirm current requirements for the specific program and application timing.
• Interviews for adult dependents: The agreement makes interviews (in person or virtual) mandatory for the main applicant and dependants aged 18+. This is particularly relevant for adult children and siblings qualifying under Antigua's program. Today, interview rules differ by program—Dominica, for example, already interviews every applicant aged 16+, usually by video.

These requirements are evolving. An authorized agent current with each program's processing is essential—this is an area where the guidance shifts program by program.

Calculate your family's full dependent cost

Before selecting a program, map your full family application cost—not just the main applicant investment. Dependent fees, due diligence costs, and agent fees for each family member often equal or exceed the base investment cost for families of three or more.

Our Grenada and Antigua and Barbuda pages break down the costs for each program. Read the relevant one before your first advisor conversation.

Frequently asked questions

How to evaluate the right program for your family

The dependent rules described above lead to a practical framework for program selection when children are involved:

1. Map all dependents first. List every family member you want to include, their current age, their status (student, employed, financially dependent), and their relationship to the main applicant.

1. Check eligibility, not cost. If a key family member doesn't qualify under a program's rules, that program is off the table regardless of cost. Antigua's sibling provision is the most common example of a feature that narrows the eligible set.

1. Account for timing. If an adult child is 24 and near a program's enrollment requirement threshold, the application timing could affect their eligibility. Some families deliberately accelerate applications; others defer to the next year.

1. Request itemized cost estimates. Once eligible programs are identified, ask authorized agents for full cost breakdowns including all dependents. Don't compare programs on the main applicant investment alone.

1. Engage a licensed authorized agent. Caribbean CBI programs authorize agents who are responsible for application submissions. Due diligence on your agent matters—check that your agent appears on the program's own official list of authorized agents. A regional ECCIRA register of licensed agents will follow once the agreement is in force.

Conclusion

Adding children and dependents to a CBI application is straightforward for minor children. The complexity begins with adult dependents, extended family, and cases where the family structure doesn't fit the most common template.

The headline points: Grenada's financially-dependent provision gives adult children under 30 the best chance of qualifying; Antigua has one of the broadest sibling policies in the Caribbean; Dominica is the most affordable entry point for families with minor children; and once the ECCIRA agreement is in force, biometric and interview requirements for dependents are set to become more stringent.

When you're ready to move forward, we'll introduce you to a government-licensed authorised agent.

Disclaimer: The information in this guide is for research and educational purposes. It does not constitute legal or tax advice. Immigration rules and program requirements change frequently—always verify current requirements with a licensed authorized agent before taking action. Program fees, age limits, and eligibility rules are subject to change; the figures and rules cited here reflect publicly available information as of April 2026.