Bulgaria has officially joined the Eurozone, replacing its lev with the euro. The country had already pegged its currency to the euro, but full membership eliminates exchange rate risks and integrates it into the European Central Bank's monetary policy framework. This move follows years of preparation and meeting the EU's convergence criteria.

Full membership reduces transaction costs for businesses and investors, deepens financial market integration, and potentially lowers borrowing costs for Bulgarian companies. It also strengthens the country's position as a destination for foreign direct investment, aligning it more closely with the bloc's economic and fiscal governance rules.

The transition will see the gradual withdrawal of lev banknotes and coins, with a fixed conversion rate. Markets will watch for any short-term volatility and the long-term impact on Bulgaria's inflation and growth rates. The move is expected to bolster the euro's reach in Eastern Europe.