When it comes to errors, if you've tried to understand the Income Tax Act, then you can probably quickly get what types of errors could be made. For example, if you're moving, you have moving expenses, and you may believe that some types of expenses are eligible. Conversely, you may not know that you can benefit from some types of deductions for moving expenses. I'm talking here about personal income taxes.
When it comes to corporations, it's very complex what companies can deduct and the types of deductions they're allowed. When it comes to tax planning, there could be errors made in good faith, such as forgetting to report some income—