This document provides a comprehensive overview of the Eurozone, detailing the member countries of the European Union (EU) that have adopted the euro as their official currency. It includes information on the year of EU entry, the year of euro adoption (both for accounting purposes and the introduction of physical cash), and the previous currency used by each country. Additionally, it covers pending EU countries that are expected to adopt the euro in the future, as well as non-EU countries that have unilaterally adopted the euro. The document also summarizes key aspects of euro adoption, such as conversion rates and dual-currency periods.
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🌍 Pending EU Countries (Not Yet on Euro)
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Bulgaria (EU 2007) → Joining Jan 1, 2026; previous: Bulgarian lev European Central Bank+4cadenaser.com+4reuters.com+4
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Czech Republic, Denmark*, Hungary, Poland, Romania, Sweden
(*Denmark has an opt-out from euro adoption.)
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New Non-EU Users of the Euro
| Country | Adoption Year | Old Currency |
|---|---|---|
| Andorra, Monaco, San Marino, Vatican City | Vary (1999–2002) | Various franc/lira |
| Montenegro | ≈2002 | German mark → euro |
| Kosovo | 2002 | German mark → euro .png) |
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