<h1>Bulgaria's switch from lev to euro: fixed conversion, dual price displays, automatic bank changes, lev cash phase-out rules</h1> Bulgaria's adoption of the euro prescribes a mandatory currency changeover from the lev at a fixed conversion rate, requiring dual display of prices and account balances during the transition and automatic conversion of bank accounts, with lev cash remaining temporarily usable while change is returned in euros. Lev notes and coins remain exchangeable without fee through June 30 at designated intermediaries and thereafter indefinitely at the central bank, facilitating withdrawal of lev currency from circulation. Entry into the eurozone subjects Bulgaria to euro-area monetary policy, with interest rates set at union level and elimination of domestic currency devaluation as a policy tool, while removing currency-exchange costs for eurozone trade and travel.