I see several posters here and in other threads claiming "income tax is too high in Ireland". Is that really the case? This research seems to suggest that this may not be the case.
publicpolicy.ie

Comparing Irish Income Taxation Rates with other EU Member States - Public Policy
In 2019 Irish income tax revenue accounted for €23 billion or 40% of total tax receipts. Taxation of labour income accounts for the greatest share of total income tax receipts: with Pay As You Earn (PAYE) and the Universal Social Charge (USC) amounting to €16 bn and €4 bn respectively in 2019
