Budgetary Policy and the Irish Income Tax System Since 2011

Income tax’s share of total tax revenue (excluding excess corporation tax) has remained broadly stable since 2011 and above its values between 1996 and 2008, indicating that budgetary policy since the financial crisis of the late 2000s has not undermined this important source of Exchequer revenue. Compared to what occurred between 1996 and 2008, the net costs of income tax packages, as a percentage of the previous year’s income tax revenue, in Budgets since 2015 have been modest in terms of their estimated impact on the income tax take. For single taxpayers, the changes in average income tax rates between the 2013 and 2025 tax codes are small, with some shifting of income tax paid between its USC and non-USC components occurring.