Ireland joined the European Union in 1973 and was one of the first countries to adopt the euro on 1 January 1999.

Ireland's accession to the European Union (EU) in 1973 marked a significant turning point in the country's economic and political trajectory. Joining the EU provided Ireland with opportunities for economic growth, trade expansion, and increased cooperation with other European nations. However, it wasn't until the introduction of the euro that Ireland experienced a profound shift in its currency and monetary policies.

On January 1, 1999, Ireland, along with 10 other EU member states, embraced the euro as its official currency. This move was part of the third stage of the Economic and Monetary Union (EMU), which aimed to create a single currency for the participating countries. The adoption of the euro represented a major step toward further economic integration among EU member states.

The euro, denoted by the symbol €, became the common currency for Ireland, replacing the Irish pound (Punt). The transition to the euro brought about several advantages, including the elimination of currency exchange costs within the Eurozone, simplified cross-border transactions, and increased price transparency in the European market.

For Ireland, the shift to the euro was particularly significant given the country's growing importance as a hub for multinational corporations and its increasingly integrated role in the European economy. The euro facilitated smoother trade and investment relations with other Eurozone countries, streamlining financial transactions and contributing to Ireland's economic development.

The euro has also played a role in fostering a sense of shared economic identity among Eurozone nations. The currency is managed by the Eurosystem, which consists of the European Central Bank (ECB) and the central banks of the Eurozone countries, including the Central Bank of Ireland. The Eurosystem works collectively to maintain price stability and promote the overall economic well-being of the Eurozone.

Ireland's commitment to the euro reflects its dedication to the principles of economic and monetary union within the EU. The country has weathered economic challenges, including the global financial crisis, as part of the Eurozone, benefiting from the collective strength and stability provided by the common currency.

As of the last available information in early 2022, Ireland continues to use the euro as its official currency, contributing to the cohesion and interconnectedness of the Eurozone. The euro's role in Ireland's economic landscape highlights the country's ongoing commitment to European integration and cooperation in the realm of currency and monetary policies.