Interpretation Bulletin 3009R, March 2004
References: sections 75, subsections 80(10), 80(11), 80(15), 80(16), 80(20), 80(21), 80(25), 80(26), 80(27) and 80(28)
This bulletin replaces Interpretation Bulletin 2620 originally published July, 1995.
The bulletin sets out the policy of the Corporations Tax Branch (Branch). It is provided as a guide to taxpayers and is not intended as a substitute for the relevant legislation. Any references to legislation are to the provisions of the Corporations Tax Act (Ontario) (CTA) and its Regulations, unless otherwise noted.
The purpose of this bulletin is to describe the provisions of the CTA under which the Minister of Finance for Ontario (Minister) can issue a reassessment.
This bulletin also discusses the Branch's policy regarding the acceptance of revisions to discretionary deductions requested by taxpayers.
Subsection 80(11) contains the legislation regarding the issuance of assessments and reassessments. Generally, under clause 80(11)(c), a reassessment must be issued before the expiry of the "normal reassessment period". The "normal reassessment period" is defined in subsection 80(10). For a Canadian-controlled private corporation (CCPC), it is the period that ends four years after the day of mailing of an original assessment. For a non-CCPC and a mutual fund corporation, it is the period that ends five years after the day of mailing of an original assessment.
A reassessment for a particular year can be issued at any time under clause 80(11)(a) where the taxpayer has:
Extension of the Normal Reassessment Period- Subsection 80(11)(b)
Clause 80(11)(b) increases the time period for reassessment by three years beyond the normal reassessment period in the following situations:
The purpose of the 3-year extension beyond the normal reassessment period is demonstrated by the example in paragraphs 8 and 9.
A CCPC incurs a loss of $10,000 in the 1997 taxation year. The loss is carried back to its 1994 taxation year which was originally assessed in mid 1995. In 2001, a reassessment reduces the loss incurred in 1997 to $5,000.
If an extension beyond the normal reassessment period was not available, the 1994 year could not be reassessed to revise the loss since it would have been statute-barred in mid-1999 (four years after the original assessment date). However, due to subclause 80(11)(b)(i), the 1994 year remains open an additional three years to allow the loss carried back from 1997 to be reduced.
Please refer to the flowchart in paragraph 32 for time periods applicable to issuing reassessments.
Although the reassessment period is increased by three years, subsection 80(15) limits the nature of any such reassessment to adjustments referred to in subclauses 80(11)(b)(i) to 80(11)(b)(vi), described above in paragraph 6. For example, where a loss was previously carried back to a prior taxation year, a subsequent reassessment can be issued under subclause 80(11)(b)(i), but only for purposes of revising the amount of the loss.
However, only the amount of the loss carried back can be reassessed, as stipulated by subsection 80(15). In addition, the three year extension provided by subclause 80(11)(b)(i) does not give the Minister an extra three years beyond the normal reassessment period in which to apply a loss to a prior taxation year, where none was previously applied.
Subsection 80(16) requires the Minister to reassess a taxation year to apply a loss where a corporation has delivered the tax return for the year as required by section 75 and has requested in writing that a loss from a subsequent year be applied. Subsection 80(16) gives the corporation three years from the date a return is required to be filed for a particular year to request a loss be carried back to that particular year, i.e. three and one half years after the end of the taxation year. Administratively, the Branch will reassess a taxation year regardless of when the loss carry back request is made as long as the taxation year to which the loss is being applied is open for reassessment. Loss carry back requests to a taxation year that is statute barred will not be processed. This policy also applies to requests for revisions to losses previously carried back.
Occasionally, a balance (as defined in paragraph 17) for a year (particular year) is adjusted as a result of either a reassessment or a decision in relation to an objection or appeal and that adjusted balance affects another taxation year which is statute-barred. When this occurs, subsection 80(20) provides a means to adjust the balance in the otherwise statute-barred year (other year). The subsection permits the Minister to make the consequential adjustment to the other year where:
The significance of subsection 80(20) is illustrated by the following example:
Assume that a CCPC's December 31, 1993 taxation year was assessed on August 15, 1994. This taxation year would normally become statute-barred on August 16, 1998. The December 31, 1994 taxation year was assessed on August 18, 1995 and became statute-barred August 19, 1999. A waiver was filed to keep the 1993 taxation year open for matters specified in the waiver. The 1993 taxation year was reassessed for capital cost allowance (CCA) adjustments on February 3, 2000.
The reassessment revising the corporation's undepreciated capital cost (UCC) balance at the end of the 1993 taxation year has consequences for the same balance in the 1994 taxation year. The Minister can reassess the 1994 taxation year to adjust the corporation's CCA claim and UCC balance even though a waiver was not filed for 1994. The Minister's ability to reassess the 1994 taxation year under subsection 80(20) is restricted in this case to consequential CCA adjustments stemming from the changes to the UCC balance in 1993.
The Minister has until the later of the following to reassess the 1994 taxation year:
Subsections 80(25) to 80(28) apply in respect of assessment actions carried out by other Canadian taxing authorities for which notices are mailed or otherwise issued to a corporation after December 9, 1996.
Subsection 80(25) allows the Minister to reassess a corporation beyond the normal reassessment period in respect of any item that can be reasonably regarded as relating to an assessment action carried out by another taxing authority. The Minister can reassess up until the later of:
"The date of notification of an assessment action carried out by a taxing authority" means the day that is the later of:
Corporations often request amendments to their CCA claims or other discretionary deductions to either increase or decrease a non-capital loss. Any changes to the CCA claimed affects the closing balance of the UCC. UCC is a component in the net book value (NBV)/UCC comparison for capital tax purposes. Where the CCA claim increases, there is a consequential decrease to capital tax. Conversely, where the CCA claim decreases, there is a consequential increase to capital tax.
Where a corporation makes a request to revise the amount of the CCA claim or other discretionary deduction for the taxation year, the Branch will accept the amendment in the following cases:
This flowchart assumes there has been no fraud, negligence, waivers filed or failure to file a return which would keep a taxation year open indefinitely. It applies for taxation years commencing after June 28, 1988.

* In addition to a Loss Carry Back (LCB), has the year been assessed for any other item under clause 80(11)(b), i.e., transactions with a non-arm's length non-resident or payments to or from a foreign government?
** These years are open only for revising the amount of the loss or any other item reassessed under clause 80(11)(b), as per subsection 80(15) (see paragraph 11).
For further information, please contact Desk Audit, general tax enquiries
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