December 2023
15 December
- Deadline to pay quarterly tax instalment
- November payroll remittance
25 December
- Christmas Day
26 December
- Boxing Day (ON)
27 December
- Last day to settle trades in calendar year 2022 for Canadian tax-loss selling.
31 December
- Last day of the tax year.
- Contribution deadline for Registered Education Savings Plans (RESP).
- Deadline to make charitable donations to be claimed for the 2022 tax year.