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Forms and publications

CT23 / Annual returns and guides / Exempt from filing (EFF) declarations

CT8 - Insurers

2009 and 2010 Insurance Premium Tax Returns and Guides are available by contacting the Ministry of Finance at 1 866 ONT-TAXS (1 866 668 8297).

Corporations tax schedules (allocation, capital tax and income tax)


Capital tax

Income tax

Forms and publications

Updated: June 21, 2022
Published: March 30, 2022