Calculating Source Deductions and Employer Contributions

Once you have determined the source deductions and employer contributions payable on the amounts you pay to your employees or beneficiaries, you must calculate the amount.

As the case may be, you must calculate:

Important

Every amount you deduct, withhold or collect as an employer or a payer pursuant to a fiscal law is deemed to be held in trust for the government until you remit the amount to the government in the prescribed manner and within the prescribed time period. Such amounts constitute a separate fund that is not part of your property.

If you have an establishment in Québec and have at least one employee, you must register with the Commission des normes, de l'équité, de la santé et de la sécurité du travail (CNESST) and pay the occupational health and safety insurance premium by making periodic payments to us. For more information on calculating this premium, see Periodic Payments of the Occupational Health and Safety Insurance Premium.

If you deduct support payments from the salary or wages you pay to an employee, consult Source Deductions of Support Payments and Arrears.

Calculating source deductions and contributions in certain situations

Certain situations and special cases can modify the calculation of source deductions and employer contributions. Before you make source deductions and pay employer contributions, you must take into account:

Helpful tools

To find out what source deductions you must make and what employer contributions you must pay on amounts paid to an employee or a beneficiary, you can:

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