Tax season is here.
The deadline to file your taxes is April 30. Contact us to get started on filing your taxes.
Welcome to the Seyon Tax client login.
Announcements
Welcome! We are delighted to have you as a valued client.
As we navigate through the year together, you can find key dates below. Feel free to explore the portal, and if you have any questions or need assistance, our team is just a message or a call away.
Thank you for choosing Seyon Tax—we look forward to providing you with exceptional service.
Your Secure Portal
We use a secure portal to transfer your sensitive documents back and forth.
You will need login credentials to sign in, which should have been provided to you by your Seyon representative.
If you have any questions about this process, please speak with your Seyon representative or give us a call at (416) 438 – 3350.
Key Dates
2 January 2024
- First day of tax year
31 January 2024
- 2023 T2 Corporate Income Tax return filing due date for corporations with July 31 year-end
19 February 2024
- First day to file 2023 tax return online
29 February 2024
- Last day for employers to issue T4, T4A and T5 slips to employees and CRA
- Last day to make RRSP contributions for 2023 tax year
- 2023 T2 Corporate Income Tax balance payment due date for corporations with December 31 year-end and without small business month extension
15 March 2024
- First instalment payment due dates for 2024 if quarterly installments must be paid
1 April 2024
- 2023 HST return filing and payment due date for non-individual (corporations and partnerships) annual filers with December 31 year-end
- 2023 T2 Corporate Income Tax balance payment due date for corporations with December 31 year-end and small business month extension
30 April 2024
- T1 Personal Income Tax filing due date for individuals without self-employment income and balance payment due date for all individuals
- 2023 HST payment due date for individual (self-employed) annual filers with December 31 year-end
17 June 2024
- 2023 T1 Personal Income Tax filing due date for self-employed individuals
- 2023 HST return filing due date for individual (self-employed) annual filers with December 31 year-end
- Second instalment payment due dates for 2024 if quarterly installments must be paid
2 July 2024
- 2023 T2 Corporate Income Tax return filing due date for corporations with December 31 year-end
16 September 2024
- Third instalment payment due dates for 2024 if quarterly installments must be paid
30 September 2024
- 2024 T2 Corporate Income Tax balance payment due date for corporations with July 31 year-end and without small business month extension
31 October 2024
- 2024 HST return filing and payment due date for annual filers with July 31 year-end
- 2024 T2 Corporate Income Tax balance payment due date for corporations with July 31 year-end and small business month extension
16 December 2024
- Fourth instalment payment due dates for 2024 if quarterly installments must be paid
31 December 2024
- Last day of tax year