If you have missed tax deductions for a previous year, you are normally allowed to make the claim. First, find out whether three years have passed since the date of issue of the Notice of Assessment (or Reassessment) for the particular year when you missed claiming the deductions. If not Canada Revenue Agency will “open up” a prior year return provided that the following four conditions are met:
-The return for the particular year is filed within the three-year period. -Canada Revenue Agency is satisfied that the previous assessment/reassessment was not correct.
-The request for decrease in income is not based on so-called “permissive” deductions, such as depreciation.
-The amount of claims or tax reserves you originally filed less than the maximum allowable amount.
-The application for a refund is not based solely on a successful court case.
