Yes, some of the expenses are “restricted”, among them are:

• Life insurance premiums (there is an exception where such insurance policy is used as a collateral for a business loan);
• “Capital” expenses - those expenditures, for tax purposes, are subject to the capital cost allowance (CCA), which provides for deduction based on a percentage of cost on declining balance basis;
• Personal expenses (there still could be a “business part” in some of them);
• Prepaid expenses (for future periods);
• Financing of business projects (such expenses should be amortized);
• Most types of CRA’s interest and penalties;
• Interest for vacant land (there is a limit you still can deduct);
• Golf/sports clubs memberships (there are circumstances where you can deduct a portion of such fees - consult with your Tax Coach for details);
• Payments for some legal and accounting services;
• Most payments for advertising in a foreign media;
• 50% of meals and entertainment expenses (some of them qualify for 100% deduction, check the CRA’s website or consult with your Tax Coach for details).