Eurostat have published a news release with some summary tables of taxation trends in the EU. The data are taken from the 2013 Statistical Book on the same topic. The section on Ireland in the book opens with the following summary.
At 28.9 % in 2011, the total tax-to-GDP ratio in Ireland is the sixth lowest in the Union and the second lowest in the euro area. In recent years this ratio gradually decreased from a 2006 high of 32.1 %, but has increased again in 2011, apparently on foot of budgetary measures aimed at raising tax receipts.
The taxation structure is characterised by a strong reliance on taxes rather than social contributions. Direct and indirect taxation make up 43.4 % and 39.4 % of the total revenue in 2011 respectively, whereas the social contributions raise only 17.2 % of total tax revenue. The share of social contributions is the second lowest in the EU. The structure of taxation differs considerably from the typical structure of the EU-27, where each item contributes roughly a third of the total. As in the majority of Member States, the largest share of indirect taxes is constituted by VAT receipts, which provide 54.1 % of total indirect taxes (53.3 % for the EU-27). The structure of direct taxation is similar to that found in the EU-27. The shares of personal income taxes and corporate income taxes are in line with the EU-27 average and represent 9.2 % and 2.4 % of GDP. Social contributions represent a meagre 5 % of GDP (second lowest in the Union after Denmark), compared to an EU-27 average of 12.7 %. Employers’ and employees’ contributions are at 3.5 % and 1.3 % of GDP, respectively.
Ireland is one of the most fiscally centralised countries in Europe; local government has only low revenues (3.5 % of tax revenues). The social security fund receives just 16.4 % of tax revenues (EU-27 37.3%), while the vast majority (79.2 %) of tax revenue accrues to central government. This ratio is exceeded only by Malta and the UK.