Compare jurisdictions, side by side.

Estonian residency routes:

• Start-up visa - for founders of qualifying start-ups
• Digital nomad visa - for eligible remote workers
• Work permit - employer-sponsored
• Family routes - spouse / dependants

Note: e-Residency is NOT a residence permit - it is a digital identity for managing an Estonian company remotely.

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.

Spanish residency routes:

• Non-Lucrative Visa - passive income, no employment in Spain
• Digital Nomad Visa - remote workers and self-employed (Startups Law)
• Self-Employed Visa
• Entrepreneur Visa
• EU citizen-derivative routes

The Golden Visa has been phased out for real estate purchases.

OÜ (private limited) is the standard structure, formed online via e-Residency or in person. Reporting obligations are real but proportionate; accounting partners are widely available.

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.

SL (Sociedad Limitada) is the standard private company. Registration involves NIE / NIF, notary, mercantile registry, and tax registration. Spanish tax residency triggers worldwide income reporting; the Beckham Law (special tax regime) may apply to eligible relocated workers.

Estonian banks have tightened KYC for non-resident e-residents; many international founders rely on EMIs (Wise, Revolut Business, Payoneer, etc.) for day-to-day banking. Local bank accounts typically require strong substance evidence.

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.

Personal banking for residents is straightforward; corporate banking depends on activity and structure. Bordercase coordinates introductions for non-standard cases.

Family relocation is supported on the work and start-up visa routes; schooling and healthcare access follow the main applicant's residency.

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.

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

Common pitfalls Bordercase watches for:

• Confusing e-Residency with physical residency
• Banking-only setups without substance - likely flagged
• Crypto, gambling, and other regulated industries face additional friction
• Tax residence triggered by 183 days even without a residence permit

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

Risks Bordercase watches for in Spain:

• Tax residency triggers - 183 days + centre of interests
• Beckham Law (special regime) eligibility
• Autonomous-community tax variation
• Hacienda audits when planning is unclear
• Past Schengen overstays must be disclosed

For e-Residency:

• Passport
• Application form
• Biometric collection at the chosen Estonian embassy or pickup point

For physical residency:

• Passport
• Criminal record certificate
• Proof of income
• Accommodation evidence
• Health insurance
• Business plan (start-up visa)

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.

Typical Spanish residency documents:

• Passport
• NIE (foreigner identification number)
• Criminal record certificate with apostille
• Proof of income / assets
• Health insurance with full cover in Spain
• Accommodation evidence
• Marriage / birth certificates for family routes