Class A Subclasses Guide Reviewed 26 July 2026

PRSI Class A1, A0, AX and AL Explained

Understand Class A PRSI and the A0, AX, AL and A1 codes on Irish payslips, including why weekly earnings can change the subclass.

Quick answer

  • Class A is the main employee PRSI class for most private-sector workers and many newer public servants.
  • A0, AX, AL and A1 are subclasses within Class A, not four unrelated contribution classes.
  • The subclass is based mainly on reckonable weekly earnings and special payroll circumstances.
  • The PRSI Calculator holds the complete 2026 Class A rate table; this guide explains the codes without repeating it.
Calculator

PRSI Calculator

Open this Irish calculator to test your own numbers and compare the result with the guide.

FreeIrish planning tool EstimateFor guidance only 2026Ireland-focused
Use PRSI Calculator
On this page
  1. What the Class A subclass codes mean
  2. How a Class A subclass is selected
  3. Why the code can change between payslips
  4. What Class A contributions may support
  5. Class A after age 66

What the Class A subclass codes mean

Code General meaning What to notice
A0 Class A employment where the employee share is nil in the lower weekly-pay band The employer share can still be due
AX Class A employment in the tapered employee-credit range The deduction is reduced by the PRSI credit
AL Class A employment above the credit range but within the lower employer band Normal employee treatment with the lower employer band
A1 Class A employment above the relevant employer-band cut-off The higher employer contribution treatment applies

Official documents use A0 with the number zero. People often type “AO”, but that is a search spelling rather than the formal subclass.

How a Class A subclass is selected

Confirm Class AThe employment must first fall within Class A.
Find reckonable weekly payUse money pay plus relevant notional pay for the period.
Apply the weekly bandThe band points to A0, AX, AL or A1.
Report the weeksPayroll submits the subclass and contribution weeks for the period.

Use the calculator for the exact 2026 band amounts, pre-October and post-October rates and worked numerical examples.

Why the code can change between payslips

  • A bonus, overtime or arrears increased reckonable pay for one period.
  • Unpaid leave or reduced hours moved weekly-equivalent pay downward.
  • A once-off payslip was combined with regular pay for PRSI calculation.
  • A job started or ended within the pay period.
  • Payroll corrected the employee’s class or pay record.
  • A special scheme such as Community Employment uses a different Class A subclass.

A subclass change caused by earnings is not automatically an error. Compare the gross PRSI pay, contribution weeks and class details for the same period.

What Class A contributions may support

Class A is a full-rate social-insurance class and can support a broad range of benefits, subject to the separate qualifying conditions. These can include State Pension (Contributory), illness, maternity, paternity, parent’s, jobseeker’s and Treatment Benefit coverage.

The A1 label alone does not prove eligibility. DSP examines the full contribution record, relevant contribution years, paid-versus-credited conditions and the rules of the benefit.

Class A after age 66

Do not rely on older guidance saying every Class A employee moves out of Class A at 66. Since 2024, people can choose to draw State Pension (Contributory) between 66 and 70. Revenue states that PRSI liability can continue until the pension is awarded or age 70 is reached.

Someone born before 1 January 1958, already receiving State Pension (Contributory), or in another specific situation can be treated differently. Payroll should confirm the class from current official instructions.

Frequently asked questions

What does PRSI Class A1 mean?

A1 is the Class A subclass generally used above the relevant weekly-pay cut-off for the higher employer contribution treatment.

What is PRSI Class A0?

A0 is the formal code, using zero. It generally applies in the lower Class A weekly-pay band where the employee share is nil.

What is PRSI Class AX?

AX is the Class A subclass within the tapered employee PRSI credit range.

What is PRSI Class AL?

AL is the Class A subclass above the credit range but within the lower employer contribution band.

Why did my payslip change from AL to A1?

The reckonable pay for that period may have crossed the relevant weekly cut-off because of pay, overtime, bonus or arrears.

Does A0 mean no PRSI contribution?

Not necessarily. The employee share can be nil while the employer share and an insurable contribution are still reported.

Does A1 guarantee State Pension entitlement?

No. It is a payroll subclass. Pension entitlement depends on the complete qualifying record and pension rules.

Where can I see the 2026 Class A rates?

Use the PRSI Calculator, which contains the one complete Class A rate table and worked examples.

Sources & references

Back to PRSI Ireland
Employer PRSI Ireland 2026: Cost and Calculation Understand employer PRSI in Ireland, how it differs from the employee deduction, what forms reckonable pay and how to estimate total employment cost. PRSI Classes Ireland: A, B, C, D, E, H, J, K, M, P and S Understand all 11 Irish PRSI classes, the people normally covered, the difference between class and subclass and how to confirm your own class. PRSI Credit and Weekly Thresholds Ireland Understand the Class A employee threshold, tapered weekly PRSI credit and why a modest pay change can noticeably alter a deduction.

Related calculators

Use these tools for the numbers behind this guide.

PRSI Social insurance
Scroll to Top