Harmonized Sales Tax (HST)
Self employed individuals HST owing is due on or before April 30 following the fiscal year.
The return is due on or before June 15 following the fiscal year.
Payroll - Important Dates
If your average monthly remittance two years ago was less than $15,000.
Deductions to be remitted so that they are received by the CRA on or before the 15th day of the month following the quarter you made the deductions
If you have an average monthly withholding amount of less than $1,000 in either the first or the second preceding calendar year, and you have a perfect compliance history in the previous 12 months; and you have no outstanding GST/HST returns or T4 information returns for the previous 12 months.
Deductions to be remitted once every three months to be paid on the 15th day of the month following the quarter you made the deductions.