Irish Tax System: Income Tax, USC & PRSI Explained

Overview of the Irish Tax System

The Irish tax system is a progressive, pay-as-you-earn (PAYE) system administered by the Office of the Revenue Commissioners. Tax is deducted at source from employment income and is composed of three main components: Income Tax, the Universal Social Charge (USC), and Pay Related Social Insurance (PRSI).

Updated for 2026 Revenue rates.

Income Tax

Income tax is charged at two marginal rates depending on your income level and personal circumstances:

• Standard rate (20%) — applied to income up to your standard rate cut-off point
• Higher rate (40%) — applied to income above your standard rate cut-off point

The standard rate cut-off point varies based on your marital and civil partnership status. For a single person in 2026, the standard rate band is approximately €42,000. Married couples and civil partners may transfer unused bands between them under joint assessment.

Tax Credits

Tax credits reduce the amount of tax you pay. The main personal tax credit for 2026 is approximately €1,875 for a single person. Other common credits include the employee tax credit (€1,875), home carer tax credit, and the single person child carer credit. Unlike tax allowances, tax credits reduce your tax bill directly euro-for-euro.

Universal Social Charge (USC)

The USC is a tax payable on gross income before any pension contributions or other deductions. It has several bands with increasing rates. For 2026:

• 0.5% on the first €12,012 of income
• 2% on income between €12,012 and €25,760
• 4% on income between €25,760 and €70,044
• 8% on income above €70,044

If you are aged 70 or over or hold a full medical card, a reduced set of USC rates applies. Individuals with annual income of €13,000 or less are exempt from USC entirely.

Pay Related Social Insurance (PRSI)

PRSI is a contribution-based system that funds social welfare benefits including the State Pension, Jobseeker's Benefit, and Illness Benefit. Most employees pay Class A PRSI at 4% of gross earnings. Employers also make a contribution of approximately 11.05% on behalf of each employee. Self-employed individuals pay Class S PRSI at 4%.

How the Components Work Together

Your total tax deduction is calculated as: Income Tax (20%/40%) + USC (0.5%-8%) + PRSI (4%). Tax credits are applied against the combined income tax liability first. USC and PRSI are generally not reduced by tax credits.

Self-Assessment

If you have non-PAYE income (self-employment, rental income, investment income), you must register for self-assessment and file an annual Form 11 return through Revenue's Online Service (ROS). Preliminary tax is due by 31 October each year.