Tax Deadlines

Corporations Tax Returns:

-2 months (and in many cases 3 months) after year end taxes are due.
-6 months after year end, Return is due(E.g. For an August 31st year end the corporate tax return is due February)
** 5% penalty if the 6 month deadline is missed!!

T2 - Corporate Installments:

Due at the end of each month (starting in 2008 certain corporations can pay quarterly)

T3 - Trust Returns:

Due March 31st yearly - No Exceptions! 

T4 & T5: (Wage and Dividend Summaries)

Due at the end of February 

Payroll:

Due on the 15th of each month (however some companies with larger payrolls will have earlier due dates) 

WSIB Returns:

Monthly reporting frequency: End of the following month (e.g. for January, the last day of February) 
Quarterly reporting frequency: End of the month following the end of the quarter (e.g. for first quarter, April 30) 
Annual reporting frequency: April 30 

HST Returns:

Any period end: Annual Returns due 3 months after Year End.
Quarterly Returns due 1 month after end of each quarter.
*Determining factor:
- if Revenue is greater than $500,000 must do quarterly
- if Revenue is less than $500,000, can do annually
** Exception- Yearly HST for Individual due June 15th (Self Employed)