Compare jurisdictions, side by side.

Serbian residency routes:

• Temporary residence via employment
• Self-employment / business
• Real-estate ownership
• Family reunification
• IT-focused residency framework

Permanent residence typically after 3 years of continuous temporary residence.

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.

Grenada routes:

• Citizenship by Investment (CBI) via fund contribution or qualifying real-estate investment
• Standard work permits
• Family routes

Mexican residency routes:

• Temporary resident visa - via investment, employment, or qualifying income
• Permanent resident visa - via qualifying assets, retirement income, or after 4 years of temporary residency
• Family unity routes - for spouse and dependents of permanent residents / citizens
• Student visa

Permanent residency unlocks indefinite stay with work authorisation.

DOO (limited liability) is the standard structure. Formation is well-documented, with online steps available. Tax registration (PIB) and APR (Business Registers Agency) registration follow.

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.

Domestic companies and IBCs are common in international structures.

SA de CV (Sociedad Anónima) and S de RL de CV are the standard private entity types. Formation involves a notary, RFC (tax registration), and IMSS where staff are involved. Mexican tax residency is triggered by primary home and centre of economic interests.

Personal and corporate banking for residents is broadly accessible. Source-of-funds documentation matters for non-standard cases. 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.

Banking is selective. Bordercase coordinates banking introductions through current partners.

Resident personal banking is broadly accessible; corporate banking depends on activity and structure. Source of funds and ownership clarity are central. Bordercase coordinates introductions for cross-border cases.

Family reunification is supported. International schools (English, French, Russian) are available in Belgrade.

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.

CBI can include qualifying dependents.

Family reunification is supported on most residency routes. International schools (English, German, French, Japanese) are widely available in major cities; bilingual public and private schools are common.

Risks Bordercase watches for in Serbia:

• Tax residency triggers
• VAT registration timing
• Processing variations between MUP offices
• EU Schengen access requires planning for cross-border travel

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

Risks Bordercase watches for in Grenada:

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

Risks Bordercase watches for in Mexico:

• Centre-of-economic-interests test for tax residency
• Real-estate restrictions in the "restricted zone" (50 km from coast, 100 km from borders) - fideicomiso or Mexican company structure needed
• Income thresholds for temporary / permanent routes change with minimum wage indexation
• Late-stage RFC and CURP registrations

Typical Serbian residency documents:

• Passport
• Criminal record certificate
• Proof of address
• Basis for residence (employment, business, etc.)
• Health insurance
• Family certificates

Apostilled and translated to Serbian.

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

Typical CBI documents:

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

Typical Mexican documents:

• Passport
• Apostilled foreign documents (birth, marriage, criminal record)
• Proof of income or qualifying assets
• Photographs to specification
• Mexican consular application abroad for most routes