Which countries will start using the euro in 2026?

On January 1, 2026, Bulgaria will officially adopt the euro, replacing its national currency, the lev, and becoming the 21st country in the European Union to use the single currency. The Balkan nation, with a population of around 6.7 million, has been an EU member since 2007 and joined the Schengen Area in March 2024, further integrating into European systems.

Bulgaria’s adoption of the euro marks a significant step in its economic alignment with the EU, including meeting the Maastricht criteria for inflation, debt, and fiscal stability. The transition will affect prices, banking, and trade, as well as everyday transactions for citizens who will now use euro banknotes and coins.

After Bulgaria joins, only six EU countries will continue using their own national currencies: the Czech Republic, Denmark, Hungary, Poland, Romania, and Sweden. These countries have either opted out of euro adoption or are still in the process of meeting the criteria for joining the eurozone.

Bulgaria’s move to adopt the euro is expected to boost trade, investment, and economic stability, while also symbolizing further integration into the European single market. Citizens and businesses are preparing for the change, with banks and financial institutions updating systems and exchanging national currency for euros ahead of the official switch.