Bulgaria and the euro government, notably economy minister Petar Dimitrov, have speculated about unilaterally introducing the euro, which was not well-met by the European Commission. The lev is not part of ERM-II, but since the launch of the euro in 1999, it has been pegged to the euro at a fixed rate of €1 = BGN 1.95583 through a strictly managed currency board. In all of the three latest annual assessment reports, Bulgaria managed to comply with four out of the five economic convergence criteria for euro adoption, only failing to comply with the criteria requiring the currency of the state to have been
Bulgaria and the euro how to let a country using a currency board join the euro. The Prime Minister has stated the desire to keep the currency board until the euro was adopted. However, factors such as a high inflation, an unrealistic exchange rate with the euro and the country's low productivity are negatively affected by the system. Simeon Dyankov, Bulgaria's then-finance minister, said in September 2009 that Bulgaria planned to enter ERM II in November 2009, but this was delayed. It was then delayed further due to an increased budget deficit, outside the Maastricht criteria. Since 2011, Bulgaria's non-membership of the ERM has