- May payroll liabilities due June 15.
- The deadline for the Annual Registered Charity Information Return, Form T3010, is June 30th for those with a fiscal year end of December 31.
June 30th is not the due date for submitting Form T3010 but is the due date by which it must be in the hands of CRA. Therefore, you are advised to mail it at least a few days before June 30th unless you are submitting it online.