The Economic and Fiscal Outlook document published as part of Budget 2026 sets out the latest fiscal projections including for corporation tax receipts. For 2026, corporation tax receipts are projected at €34 billion.
My Department does not forecast the expected share of corporation tax receipts paid by the top ten payers. However outturn data is published by the Revenue Commissioners annually. The latest analysis indicates that the top ten payers accounted for some 57 per cent of corporation tax receipts in 2024.
The most recent report is available at the below link:
www.revenue.ie/en/corporate/documents/research/ct-analysis-2025.pdf.
I have frequently warned of the risks associated with this degree of concentration and the resulting volatility in this revenue stream, and my Department has published a significant volume of analysis on this. The corporation tax base is concentrated among a small number of firms and in a small number of FDI-related sectors, meaning that our public finances remain vulnerable to a shock to the multinational sector.
Addressing this risk is a key pillar of this Government’s approach to budgetary policy. As of this year, we have transferred some €16 billion in volatile ‘windfall’ corporation tax receipts into the Future Ireland Fund and Infrastructure, Climate and Nature Fund to build up our fiscal buffers instead of using these receipts to fund day-to-day spending.
As set out in the Budget 2026 fiscal projections, we are committed to continuing to make transfers into the two funds, as well as continuing to run headline budgetary surpluses. This is the best way to mitigate the risks associated with a highly concentrated corporation tax base.
