Frequently asked questions
Why is the CSST changing its procedures?
The CSST is simplifying procedures for employers. CSST premiums will be based on actual assessable earnings rather than an estimate of your annual assessable earnings, and the payment frequency will be aligned with your other source deductions remittances.
For more information on the CSST legislative changes, please visit:
CSST Employer Access*
Can I remit my CSST premiums separately on my own?
If ADP currently remits your MRQ source deductions, the answer is no. The CSST has indicated that your CSST premiums will be remitted together with your MRQ source deductions using a single remittance slip. The CSST and Revenue Quebec have entered into a partnership so that a single remittance slip is used to remit your periodic insurance premium payments at the same time as you remit your source deductions and employer contributions. As an ADP Tax Services Client, ADP will calculate and remit your CSST premiums on your behalf.
What if ADP doesn't remit my MRQ source deductions for me?
If ADP does not currently remit your MRQ source deductions you must make your periodic CSST payments to Revenu Québec at the same time and in the same way as your source deductions and employer contributions. A CSST box has been added to remittance slips which Revenu Québec will send you.
What if I make CSST payments but am not required to make deductions or contributions?
If you are not currently required to make source deductions and employer contributions but do have CSST payments, you will receive a CSST Payment remittance slip from Revenu Québec so that you can make your periodic payments on a monthly basis. You can submit it by mail or at your financial institution.
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