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Compare jurisdictions, side by side.

Pick up to 4 countries and see residency, company, banking, family, and risk notes line up. No prices, no marketing packages - just the working notes.

 KN flagSaint Kitts and Nevis

Central America & Caribbean

AG flagAntigua and Barbuda

Central America & Caribbean

PT flagPortugal

Europe

OverviewSaint Kitts and Nevis is a Caribbean jurisdiction with one of the oldest citizenship-by-investment programmes. Bordercase coordinates with authorised local agents and licensed advisers - citizenship outcomes remain at the discretion of the Citizenship by Investment Unit.Antigua and Barbuda is a Caribbean jurisdiction with a long-standing Citizenship by Investment programme and structured residency / corporate options. Bordercase coordinates with authorised local agents.Portugal is a popular EU destination for individuals, families, and remote professionals. Bordercase coordinates assessment across the main residency routes and family relocation logistics, working with licensed Portuguese partners for filings.
Best for
  • Second passport
  • Caribbean residency
  • Asset planning
  • Second passport
  • English admin
  • Caribbean residency
  • Families
  • Remote workers
  • Founders
  • EU access
CurrencyXCD / USDXCDEUR
LanguageEnglishEnglishPortuguese
Time zoneUTC-4UTC-4UTC+1
EU memberNoNoYes
SchengenNoNoYes
Residency

Saint Kitts and Nevis routes:

  • Citizenship by Investment (CBI) via the Sustainable Growth Fund
  • CBI via approved real-estate investment
  • Standard work / family routes

Citizenship outcomes remain at the discretion of the Citizenship by Investment Unit.

Antigua & Barbuda routes:

  • Citizenship by Investment (CBI) via fund contribution or qualifying real-estate investment
  • Standard work permits
  • Family routes including spouse, dependent children and parents under conditions

Common Portuguese residency routes:

  • D7 - passive income / pension
  • D8 - digital nomad / remote work
  • D2 - entrepreneur / self-employed
  • D3 - highly qualified workers
  • Tech Visa - eligible tech roles via accredited companies
  • Golden Visa - restricted in scope after recent reforms
  • Family reunification on most permits

Each has different income, residency-day, and renewal requirements.

Company setup

Nevis IBCs and LLCs are commonly used in international structures. Substance, beneficial ownership disclosure, and AML standards have tightened materially.

IBCs are common in international structures. Reporting and substance frameworks have tightened.

Portugal supports Lda (private limited) and SA (public limited) structures. Tax registration, social security registration, and a Portuguese tax representative are typically required. Substance, accounting, and reporting obligations are real.

Banking

Domestic and offshore banking options exist but have become more selective on KYC and source of funds. Bordercase coordinates banking pack preparation and partner introductions.

Banking is selective. KYC and source-of-funds documentation are central. Bordercase coordinates banking introductions.

Personal accounts are accessible to residents and many non-residents; documentation is structured and predictable. Corporate banking depends on company structure and intended activity; Bordercase coordinates with banking partners for introductions.

Family

CBI applications can include qualifying dependants - spouse, children, and in some cases parents - under specific conditions.

CBI applications can include qualifying dependents under conditions.

Family reunification is supported on most residency routes. Schools (public, private, and international) are widely available; the public system is generally accessible to legal residents.

Risks

Risks Bordercase watches for in Saint Kitts:

  • Programme parameters change
  • Due diligence has tightened materially
  • Rejection rates have risen for incomplete or unclear source-of-funds presentations
  • Visa-revocation and reputational risks if information is misrepresented

Risks Bordercase watches for:

  • Programme parameters change
  • Due diligence has tightened
  • Reputational and revocation risks if information is misrepresented

Risks Bordercase watches for in Portuguese cases:

  • AIMA processing delays (formerly SEF)
  • Misalignment between visa type and actual activity
  • Tax residence triggered by accident - NHR window timing matters
  • Past EU Schengen overstays must be disclosed
  • Real estate vs investment routes have changed materially
Documents

Typical CBI documents:

  • Passport
  • Due diligence questionnaires
  • Source-of-funds evidence (extensive)
  • Employment / business documentation
  • Family certificates with apostille and certified translation
  • Police clearance certificates for all countries of residence in the prior 10 years

Typical CBI documents:

  • Passport
  • Due diligence questionnaires
  • Source-of-funds evidence (extensive)
  • Family certificates with apostille and translation

Typical document pack for Portuguese residency:

  • Passport
  • NIF (Portuguese tax number)
  • Proof of accommodation (lease, deed, or invitation)
  • Proof of income or assets (varies by route)
  • Criminal record certificate with apostille
  • Health insurance valid in Portugal
  • Marriage / birth certificates for family routes
  • Certified translations where required

Country pages stay the authoritative source. This view is a side-by-side; nothing here promises a particular outcome.