🛂 Who Actually Needs a Visa
EU/EEA/Swiss citizens can live and work in Bulgaria freely with no visa at all — just a registration formality after three months. Everyone else generally needs a Type D long-stay visa before arrival, followed by a residence permit tied to the purpose of stay (employment, business ownership, family reunification, or study). There isn't a headline-grabbing digital nomad visa the way some neighbouring countries advertise; most non-EU remote workers in practice either set up a Bulgarian EOOD and work through it, or route their stay through standard employment or business-ownership permits.
💰 The Flat Tax — and the Social Security Gap
The headline draw is real: a flat 10% income tax is the lowest in the European Union, and since January 2026 it's charged in a currency (the euro) that removes a layer of conversion friction for anyone earning or billing internationally. The catch that surprises American expats specifically: the US and Bulgaria have no totalization agreement. A US citizen working self-employed or as a company owner in Bulgaria can end up paying Bulgarian social insurance contributions (up to roughly 33% of gross income, split employer/employee) and US self-employment tax (15.3% Social Security and Medicare) on the same income, with zero coordination or credit-sharing between the two systems — and years worked in Bulgaria won't count toward US Social Security eligibility either. Standard FBAR and FATCA reporting apply as everywhere else. A US-Bulgaria income tax treaty (in force since 2008) does help with ordinary double income taxation — it's specifically the social-security side that has no safety net.
🏠 Living in Sofia
Sofia consistently ranks among the most affordable capital cities in the EU, and the gap versus Vienna or Berlin is genuinely large rather than marginal. Public healthcare is available to anyone paying into the National Health Insurance Fund (mandatory for residents), and the country's EU membership means Bulgarian doctors and hospitals meet the same regulatory baseline as anywhere else in the bloc, even if facilities outside Sofia and Plovdiv can feel noticeably less resourced. Many expats carry supplementary private insurance for faster specialist access regardless.
✅ First Five Things
1. EGN or residence permit — Bulgaria's personal ID number system underpins almost everything administrative; non-EU arrivals get an equivalent number tied to their residence permit. 2. Bank account — now euro-denominated across the board since January 2026, which simplifies onboarding considerably versus the old lev system. 3. Register your address — required within the legal window after arrival. 4. Health insurance enrolment — mandatory once you're a tax resident. 5. A Bulgarian accountant — genuinely worth the modest cost given the flat-tax system's few but important quirks, especially for anyone self-employed navigating the missing US totalization agreement.
✍️ The Kaufmann Bottom Line
Bulgaria in 2026 is a genuinely different proposition than it was even three years ago — euro adoption and full Schengen access removed two of the biggest practical frictions almost overnight. For most nationalities it remains one of the most tax-efficient, low-cost EU bases available; the one group that needs real upfront planning is self-employed Americans, for whom the missing totalization agreement is a real and ongoing cost, not just paperwork.
