💼 Why Bulgaria, Right Now
Bulgaria became the 21st member of the eurozone on 1 January 2026, retiring the lev (which had been fixed to the euro for decades anyway) at a locked rate of 1 EUR = 1.95583 BGN. It's a genuinely significant moment for the EU's economically newest and, by GDP per capita, poorest member state — removing currency risk for cross-border business and, so far, coinciding with one of the best-performing stock markets in the world. Add EU membership since 2007, full Schengen access since 2025, and a flat 10% corporate and personal income tax — the lowest in the EU — and Bulgaria has quietly built one of Europe's most tax-efficient bases for holding companies, freelancers and outsourcing operations.
📈 The Bulgarian Stock Exchange and SOFIX
The Bulgarian Stock Exchange (Sofia) is small by regional standards but newly energised — its benchmark SOFIX index jumped roughly 18% in the weeks immediately following euro adoption, among the strongest starts of any stock market in the world in early 2026, as investors bet on deeper European integration. Leading movers included the exchange operator itself, software group Sirma Group Holding, and pharmaceutical producer Sopharma — a reasonable snapshot of where Bulgaria's genuine competitive strengths lie: IT services, pharmaceuticals, and a banking sector now fully plugged into the Eurosystem.
🧾 Setting Up Shop
An EOOD (single-owner limited liability company) or OOD (multi-owner equivalent) is the standard structure for a small or mid-sized business, registrable with as little as 2 BGN (about €1) in minimum capital and typically set up within days through the Commercial Register. Sofia's tech and business-process-outsourcing corridor has grown steadily, with multinationals running shared-service centres there to take advantage of a strong English-speaking, lower-cost technical workforce relative to Western Europe. The flat 10% corporate rate applies uniformly regardless of company size, with no separate small-business or graduated bracket to navigate.
✍️ The Kaufmann Bottom Line
Bulgaria's pitch to business is refreshingly simple: the lowest flat tax in the EU, now paired with euro stability and full Schengen and EU market access. The trade-off is a market still visibly smaller and less liquid than Vienna's or Warsaw's — treat it as a genuinely low-cost, low-friction base rather than a place to expect deep local capital markets.
