Ireland’s Tax Revenue Increasingly Reliant on Apple, Microsoft, and Eli Lilly

Ireland’s corporate tax receipts are becoming increasingly concentrated among a small number of large multinational corporations, particularly in the technology and pharmaceutical sectors. In 2024, Apple, Microsoft, and Eli Lilly accounted for nearly half of all corporation tax collected by the Irish State, raising concerns about the sustainability and risk associated with this reliance.

Concentration of Tax Revenue

According to a report by the Irish Fiscal Advisory Council (Ifac), Apple, Microsoft, and Eli Lilly paid approximately €13 billion in corporate tax in 2024, representing 46% of the total €28.1 billion collected. Barron’s reported on this trend, highlighting the potential risks of such concentration.

Specifically, Apple paid approximately €5.8 billion in corporate tax, including €14 billion related to its tax dispute with the European Commission. Microsoft contributed around €4.8 billion, while Eli Lilly paid approximately €2.2 billion. This shift saw Eli Lilly surpass Pfizer as a top corporate taxpayer, as Pfizer’s earnings declined with reduced demand for its COVID-19 vaccines and treatments.

Growth Drivers and Future Outlook

The concentration of corporate tax revenue is largely driven by the strong performance of these multinational corporations. Both Apple and Microsoft reported double-digit global revenue growth in 2025, and analysts anticipate continued growth into 2026, fueled by demand for their products and services. Investor’s Business Daily notes Eli Lilly recently joined the ranks of trillion-dollar companies.

Eli Lilly’s increased tax contribution is linked to the success of its GLP-1 medications, tirzepatide (sold as Mounjaro for type 2 diabetes and Zepbound for weight loss), which became the world’s best-selling drug in the third quarter. The company strategically shipped approximately $42.3 billion (€36.4 billion) of ingredients for these drugs from Ireland to the US in the first four months of 2024 to preempt potential tariffs. The Motley Fool details the impact of GLP-1 drugs on Eli Lilly’s market cap.

Impact of Global Tax Changes

The implementation of a new minimum global tax rate of 15%, agreed upon through the Organisation for Economic Co-operation and Development (OECD) in 2021, is expected to further increase Ireland’s corporate tax receipts. Estimates suggest this could yield an additional €5 billion for the exchequer.

Risks and Concerns

Ifac has cautioned that this heavy reliance on a limited number of companies carries significant risks. Factors such as new product failures, leadership changes, shifts in product strategy, or increased industry regulation could lead to a substantial decline in profits and, tax revenue. The council emphasizes that future receipts could be significantly higher or lower than current levels.

Key Takeaways

• Ireland’s corporate tax revenue is highly concentrated among Apple, Microsoft, and Eli Lilly.
• The success of these companies, particularly Eli Lilly’s GLP-1 medications, is driving tax revenue growth.
• A new global minimum tax rate of 15% is expected to increase receipts further.
• This concentration poses risks to the sustainability of Ireland’s tax base.