The Council of the European Union decided on July 8, 2025 that Bulgaria had fulfilled the necessary conditions for adoption of the euro with effect from January 1,2026,1 and that the conversion rate should be set at 1.95583 Bulgarian lev per one euro.2 The Bulgarian authorities notified the Fund on July 31, 2025, that the euro will be their country’s currency, effective from January 1, 2026.
International Monetary Fund. Finance Dept. (Sun,) studied this question.