- Annual Return and Exempt From Filing (EFF) Corporations Tax Return Declaration [PDF - 271 KB]
An EFF Declaration Form is required to be filed within six months of the taxation year end for every taxation year in which the EFF criteria are met (listed on page 2 of form). An Annual Return is required to be filed for every corporation which is incorporated, amalgamated or continued in Ontario under the Ontario Business Corporations Act. - 2007 CT23 Corporations Tax and Annual Return [PDF - 296 KB]
(Also to be used for taxation years ending in 2008, see Information Notice 6028)
Annual corporate tax return for corporations with permanent establishments in Ontario. - 2006 CT23 Corporations Tax and Annual Return [PDF - 292 KB]
Annual corporate tax return for corporations with permanent establishments in Ontario. - 2006 CT23 Short-Form Corporations Tax and Annual Return [PDF - 171 KB]
(Also to be used for taxation years ending in 2007 and 2008, see Information Notice 6028)
Annual corporate tax return for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 2004/2005 CT23 Corporations Tax and Annual Return [PDF - 544 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario - 2004/2005 CT23 Short-Form Corporations Tax and Annual Return [PDF - 451 KB]
Annual corporate tax return for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 2003 CT23 Corporations Tax and Annual Return [PDF - 362 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 2003 CT23 Short-Form Corporations Tax Annual Return and Guide [PDF - 375 KB]
Annual corporate tax return and information guide for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 2002 CT23 Corporations Tax and Annual Return [PDF - 330 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 2002 CT23 Short-Form Corporations Tax Annual Return and Guide [PDF - 164 KB]
Annual corporate tax return and information guide for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 2001 CT23 Corporations Tax and Annual Return [PDF - 536 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 2001 CT23 Short-Form Corporations Tax Annual Return and Guide [PDF - 373 KB]
Annual corporate tax return and information guide for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 2001 CT23 Short-Form Corporations Tax and Annual Return, 2001/2002 Update Form [PDF - 47 KB]
This is an interim form and is to be used as a supplement to the 2001 version of the CT23 Short-Form tax return for taxation years ending after September 30, 2001. Once the 2002 version of the Short-Form tax return has been released this Update Form will no longer be required. - 2000 MCCR Annual Return and Guide [PDF - 276 KB]
This return contains non-tax information collected under the authority of the Corporations Information Act for the purpose of maintaining a public database of corporate information. - 2000 CT23 Corporations Tax and Annual Return [PDF - 357 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 2000 CT23 Short-Form Corporations Tax and Annual Return [PDF - 278 KB]
Annual corporate tax return and information guide for smaller corporations with permanent establishments in Ontario and meeting specific requirements. - 1999 CT23 Corporations Tax Return [PDF - 4.2 MB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 1998 CT23 Corporations Tax Return [PDF - 805 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario. - 1998 IDSBC Insert [PDF - 333 KB]
Corporations claiming the IDSBC and filing a tax return for a taxation year ending during the period May 5, 1998 to December 31, 1998 must use the calculations on this form and attach a copy to their return. - 1997 CT23 Corporations Tax Return [PDF - 279 KB]
Annual corporate tax return for larger corporations with permanent establishments in Ontario.
