Forms
- CT23 Corporations Tax and Annual Return
Annual corporate tax return for corporations with permanent establishments in Ontario.
Publications
- Highlights from the 2009 Ontario Budget - Corporations Tax
Information Notice - On March 26, 2009, a number of proposed measures relating to the Taxation Act, 2007 were announced in the 2009 Ontario Budget. The proposals must be passed by the legislature and receive Royal Assent to become law. - Highlights from 2006 Ontario Budget - Corporations Tax Act
Information Notice 6013 - On March 23, 2006, a number of measures relating to the Corporations Tax Act were proposed in the 2006 Ontario Budget. The proposed amendments must be passed by the Legislature and receive Royal Assent to become law. - Corporations Tax Act - Regulation Amendments
Information Notice 6012 - This notice provides information on the amendments to the regulations to the Corporations Tax Act filed March 6, 2006. These amendments bring into force announcements made in the 2004 and 2005 Budgets. - Taxpayer Requested Adjustments to Tax Credits and Incentives
Information Notice 6009 - On May 11, 2005, a number of measures relating to the Corporations Tax Act were proposed in the 2005 Ontario Budget. The legislation must be passed by the Legislature and receive Royal Assent to become law. - Ontario Budget 2005 - Corporations Tax Act Measures
Information Notice 6008 - On May 11, 2005, a number of measures relating to the Corporations Tax Act were proposed in the 2005 Ontario Budget. The legislation must be passed by the Legislature and receive Royal Assent to become law. - Guide to the CT23 Corporations Tax and Annual Return
An information guide providing information and assistance for the completion of the CT23 return.
