USC vs PRSI

USC and PRSI both appear on Irish payslips, but they are not the same thing. USC is a tax on income. PRSI is social insurance.

Written by: Money Made Clear
Type: General information
Sources: Revenue
Last checked: 28 May 2026
Not advice: General information only

General information only, based on official public sources. Not financial, tax, legal or welfare advice.

Reviewed against Revenue and Department of Social Protection guidance · Last updated May 2026

Quick answer: USC is the Universal Social Charge, a tax collected by Revenue. PRSI is Pay Related Social Insurance, a contribution that helps fund social welfare benefits and pensions.

The difference at a glance

Question	USC	PRSI
Full name	Universal Social Charge	Pay Related Social Insurance
What is it?	A tax on income.	A social insurance contribution.
Who manages it?	Revenue.	Department of Social Protection; usually deducted through payroll for employees.
What does it affect?	Your tax deductions.	Your social insurance record and possible benefit entitlements.
Can tax credits reduce it?	No.	No.

What USC is for

USC is a charge on income. Revenue says USC is payable on employees' income, including notional pay, with some types of income exempt.

USC has its own rates and thresholds, separate from PAYE income tax.

Source: Revenue — USC rates and thresholds

What PRSI is for

PRSI contributions go to the Social Insurance Fund. The Department of Social Protection says this fund helps pay for social welfare benefits and pensions.

Your PRSI class and contribution record can affect whether you qualify for certain benefits, such as State Pension Contributory, Illness Benefit or Jobseeker's Benefit.

Source: Department of Social Protection — PRSI overview

Why they are easy to confuse

USC and PRSI both come out of your wages and both reduce take-home pay. On a payslip they may sit close together, which makes them look like one thing. They are separate deductions with different rules.

Where to learn more

For a full breakdown of each deduction, see What is USC? and What is PRSI?.

If you are checking your payslip, look at PAYE, USC and PRSI as three separate deductions, not one combined tax number.

What this means in real life

On a payslip, USC and PRSI can look similar because both reduce net pay, but they represent different systems. USC is a charge on income calculated using its own bands and thresholds. PRSI is a social insurance contribution linked to contribution classes and potential access to benefits or the State Pension. A person can pay both in the same pay period, pay one but not the other, or see different treatment when earnings cross a threshold. Neither deduction is simply another name for PAYE income tax. This matters when checking a change in take-home pay because a Revenue credit may reduce PAYE without changing USC or PRSI. The detailed guides to USC and PRSI explain their calculations and purposes separately.

Related guides

Official sources

For current rules, rates and eligibility, check the relevant official public source.