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WebRAS – Calculation of Source Deductions and Employer Contributions


The new version of WebRAS takes into account the reduced tax rates announced in the March 21, 2023, budget speech. The reduction applies to remuneration paid after June 30, 2023.

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To use the tool

WebRAS 2021, 2022 and 2023

WebRAS must be used with the Guide for Employers: Source Deductions and Contributions (TP-1015.G-V). The guide contains information about how to make source deductions and how to remit and report source deductions and employer contributions.

Access tool

Purpose of the tool

Use WebRAS to calculate:

  • Source deductions of:
    • Québec income tax
    • Québec Pension Plan contributions
    • Québec parental insurance plan premiums
  • Employer contributions for the:
    • Québec Pension Plan
    • Québec parental insurance plan
    • Health services fund
  • Employers
  • Individuals in businesss

Guide TP-1015.F-V contains the formulas for calculating source deductions of Québec income tax, Québec Pension Plan (QPP) contributions, Québec parental insurance plan (QPIP) premiums and the employer contribution to the health services fund. These formulas produce results that are more precise than those obtained by using WebRAS. 

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