US investment plays a critical role in the Irish economy. 

Currently US owned companies employ 245,000 people in Ireland, an increase of more than 16% since 2024. Employment by US multinationals in Ireland also represents 8.75 percent of total employment in Ireland. 

US companies also contribute more than €40bn to the Irish economy annually on payroll, goods and services and Capital Expenditure. 

AmCham’s 2026 US–Ireland Business Report, “A Partnership that Delivers: Supporting the Next Generation of Transatlantic Business” highlights the strength and continued evolution of the economic relationship between Ireland and the United States.

The report tells the story of one of the most dynamic and deeply embedded economic partnerships in the world – a two-way investment relationship that supports jobs, innovation and prosperity on both sides of the Atlantic. Today, American companies employ approximately 245,000 people in Ireland, while Irish companies employ over 200,000 people across all 50 US states. Ireland is now the fifth largest source of foreign direct investment into the United States, with Irish companies having invested $390 billion in the US economy.

Companies operating across the US–Ireland corridor continue to invest in high-value sectors including advanced manufacturing, life sciences, digital technologies and artificial intelligence, strengthening research capability and supporting the development of world-class talent.