[tempestn]

Canada doesn't tax winnings in games of chance. If you're seen to be operating a business though - a professional poker player for instance - the winnings will be taxed. Buying all the numbers to a lottery with an expected profit could definitely fall under that umbrella.

[bryanlarsen]

Under that scenario, you'd be able to deduct the cost of the tickets as a business expense.

[tempestn]

True. Would still reduce your net profit though. (And if your plan fails and you don't make a profit, I can just about guarantee they won't allow it to be classified as a business with deductible losses.)