There are sevencurrencies of the European Union as of 2026[update] used officially by member states. Theeuro is used by a majority of EUmember states, while the remainder operating independent monetary policies. ThoseEuropean Union member states that have adopted it are known as theeurozone, and share theEuropean Central Bank (ECB). The ECB and the national central banks of all EU countries, including those who operate an independent currency, are part of theEuropean System of Central Banks.
The euro is the result of the European Union's project foreconomic and monetary union thatcame fully into being on 1 January 2002 and it is now the currency used by the majority of theEuropean Union's member states, with all but Denmark (which has anopt-out in the EU treaties) bound to adopt it. It is the currency used by theinstitutions of the European Union and in the failed treaty on aEuropean Constitution it was to be included with thesymbols of Europe as the formal currency of the European Union. The euro is alsowidely used by other states outside the EU.
Except for Denmark, all current and future members of the EU are obliged to adopt the Euro as their currency, thus replacing their current ones.[1] The relationship between euro and non-euro states has been on debate both during the United Kingdom's membership (as a large opt-out state) and in light ofwithdrawal from the EU and how that impacts the balance of power between the countries inside and those outside the eurozone, avoiding a eurozone caucus out-voting non-euro states. Former member United Kingdom had called for the EU treaties to recognise the EU as a "multicurrency union", which sparked concerns about undermining euro adoption in remaining countries.[2][3][4][5]

The following are official currencies used within the borders of the27 EU Member states:
| Currency | Region | Symbol | ISO | Peg | Notes |
|---|---|---|---|---|---|
| Euro |
| € | EUR | Floating | Also used by EU institutions. |
| Czech koruna | Kč | CZK | Floating | ||
| Danish krone | kr | DKK | ERM II | Opt-out from adopting the euro. | |
| Hungarian forint | Ft | HUF | Floating | ||
| Polish złoty | zł | PLN | Floating | ||
| Romanian leu | Leu | RON | Floating | ||
| Swedish krona | kr | SEK | Floating |
| Currency | State | Symbol | ISO | Yielded on | Rate to euro | Notes |
|---|---|---|---|---|---|---|
| Austrian schilling | S or öS | (ATS) | 1999/2002 | 13.7603 | ||
| Belgian franc | fr. | (BEF) | 1999/2002 | 40.3399 | [a] | |
| Bulgarian lev | лв | (BGN) | 2026 | 1.95583 | [b] | |
| Croatian kuna | kn | (HRK) | 2023 | 7.5345 | ||
| Cypriot pound | £ | (CYP) | 2008 | 0.585274 | ||
| Dutch guilder | ƒ or fl. | (NLG) | 1999/2002 | 2.20371 | ||
| Estonian kroon | Kr | (EEK) | 2011 | 15.6466 | ||
| Finnish markka | mk | (FIM) | 1999/2002 | 5.94573 | ||
| French franc | ₣, F or FF | (FRF) | 1999/2002 | 6.55957 | [d] | |
| German mark | DM | (DEM) | 1999/2002 | 1.95583 | ||
| Greek drachma | Δρχ., Δρ. or ₯ | (GRD) | 2001/2002 | 340.75 | ||
| Irish pound | £ | (IEP) | 1999/2002 | 0.787564 | [e] | |
| Italian lira | ₤, L. or LIT | (ITL) | 1999/2002 | 1,936.27 | [g] | |
| Latvian lats | Ls | (LVL) | 2014 | 0.702804 | ||
| Lithuanian litas | Lt | (LTL) | 2015 | 3.4528 | ||
| Luxembourgian franc | fr. or F | (LUF) | 1999/2002 | 40.3399 | [h] | |
| Maltese lira | ₤ or Lm | (MTL) | 2008 | 0.4293 | ||
| Pound sterling | £ | GBP | was part of EU untilBrexit | [i] | ||
| Portuguese escudo | $ | (PTE) | 1999/2002 | 200.482 | ||
| Slovak koruna | Sk | (SKK) | 2009 | 30.126 | ||
| Slovenian tolar | T | (SIT) | 2007 | 239.64 | ||
| Spanish peseta | ₧ | (ESP) | 1999/2002 | 166.386 | ||
| European Currency Unit | Accounting only | ₠, ECU or XEU | (XEU) | 1999/2002 | 1 | [j] |