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	Antigua and Barbuda Central America & Caribbean	Montenegro Europe	Bulgaria Europe
Overview	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.	Montenegro is a non-EU European country with structured residency routes, EU candidate status, and a growing role as a base for founders and remote workers in the region. Bordercase coordinates with licensed Montenegrin partners.	Bulgaria is an EU member state with competitive corporate tax, structured residency routes, and a well-developed digital infrastructure. Bordercase coordinates with licensed Bulgarian partners for filings.
Best for	Second passport English admin Caribbean residency	Cost of living Coastal living Regional residency	Founders EU access Cost of living
Currency	XCD	EUR	BGN / EUR transition
Language	English	Montenegrin / Serbian	Bulgarian
Time zone	UTC-4	UTC+1	UTC+2
EU member	No	No	Yes
Schengen	No	No	Yes
Residency	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	Montenegrin residency routes: Temporary residence via employment Business / self-employment Real-estate ownership Family reunification Permanent residence typically after 5 years.	Bulgarian residency routes: Employment-based residence Business / self-employment routes Retirement / pensioner residency Family reunification EU citizen-derivative routes Permanent residence typically after 5 years.
Company setup	IBCs are common in international structures. Reporting and substance frameworks have tightened.	DOO (limited liability) is the standard structure. Formation is well-documented and reasonably fast. Tax and VAT registration follow.	OOD (LLC) and EOOD (single-shareholder LLC) are common structures. Formation is well-documented. Corporate tax is at a flat rate; VAT registration depends on activity.
Banking	Banking is selective. KYC and source-of-funds documentation are central. Bordercase coordinates banking introductions.	Personal banking for residents is accessible. Corporate banking depends on activity. Bordercase coordinates introductions where useful.	Personal and corporate banking for residents is broadly accessible. Source-of-funds documentation matters for non-standard cases. Bordercase coordinates banking introductions.
Family	CBI applications can include qualifying dependents under conditions.	Family inclusion on residency applications is supported. International schools are available in Podgorica and on the coast.	Family reunification is supported. Schools (public, private, English, German, French) are concentrated in Sofia, Plovdiv, and Varna.
Risks	Risks Bordercase watches for: Programme parameters change Due diligence has tightened Reputational and revocation risks if information is misrepresented	Risks Bordercase watches for in Montenegro: Tax residency triggers EU accession dynamics may change rules over time Processing variations between municipalities Schengen entry / exit considerations for travel planning	Risks Bordercase watches for in Bulgaria: Tax residency triggers VAT classification on cross-border services Processing variations between regions Euro adoption is in progress - operational planning needed
Documents	Typical CBI documents: Passport Due diligence questionnaires Source-of-funds evidence (extensive) Family certificates with apostille and translation	Typical Montenegrin residency documents: Passport Criminal record certificate Proof of accommodation Basis for residence Health insurance Family certificates Apostilled and translated.	Typical Bulgarian residency documents: Passport Criminal record certificate Proof of address Basis for residence (employment, business, etc.) Health insurance Family certificates Apostilled and translated to Bulgarian.

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