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Administrator Guide
Last Updated: 2025-09-19
Set Up Employer Registration Number (IRL)

Set Up Employer Registration Number (IRL)

Security:
Set Up: Payroll - IRL
 domain in the IRL Payroll functional area.
Record the identifiers and credentials Workday needs to send and receive payroll information from Revenue:
  • Employer Registration Number (ERN).
  • P12 Certification.
  • Tax Advisor Identification Number (TAIN) for your third-party service provider, if applicable.
In Workday, you can add multiple companies under the same ERN. Linking companies by ERN enables you to ensure workers' year-to-date totals carry over in payroll when they transfer between any of those companies.
  1. Access the
    Create IRL Employer Registration Number
     task.
  2. Complete the task:
    Option
    Description
    Display Name
    Since multiple companies may share 1 ERN, you can use a display name to reference them as a group. Example:
    Global
     as the display name for the ERN-linked companies GMS Ireland Ltd and Global Modern Services IRL.
    Employer Registration Number
    Enter the unique 7-digit number followed by 1 or 2 letters that Revenue assigned to your business.
    Company
    Select the companies associated with the ERN.
    OK to Proceed
    Select to confirm that the display name, ERN, and company details are correct.
    P12 Certification
    Select your company's P12 digital certificate to enable Workday to submit payroll information to Revenue Online Services (ROS).
    Agent TAIN
    When you use a third-party service provider to submit information to Revenue on your behalf, enter the agent's TAIN.
Workday can:
  • Submit and receive payroll data from Revenue.
  • Securely communicate with ROS.
  • Facilitate payroll management by tax agents, if applicable.
Access the
Edit IRL Employer Registration Number
 task to update your employer identification details. Example: When you renew your P12 certification with Revenue.