The Bulgarian National Bank (BNB) predicts a significant decrease in the number of leva banknotes in circulation in the coming months, as Bulgaria prepares to adopt the euro. The anticipated date for joining the eurozone is January 1, 2026. If the European Commission and European Central Bank give a positive assessment of Bulgaria 's progress in June or July, many individuals and businesses will begin depositing their leva savings in banks. This is largely due to practical considerations, as