Does the specific game I play at an Ontario online casino change whether my winnings might be taxable?

Canada's tax treatment of gambling winnings is genuinely counterintuitive — and the specific game you play is less relevant than most people assume. The bigger variable is how you play, not what you play.

The baseline: most winnings aren't taxed

Lottery winnings are listed among amounts that are not reported or taxed in Canada — unless the prize can be considered income from employment, a business or property, or a prize for achievement. The CRA applies this same windfall logic broadly to casino-style gambling. Lottery and certain other winnings are non-taxable in Canada — however, if the taxpayer is in the business of gambling, the proceeds and losses must be considered for income tax purposes.

So whether you're playing slots, blackjack, roulette, or video poker at a licensed Ontario online casino, the winnings are generally a non-taxable windfall for a recreational player. The game type itself doesn't flip that.

Where game type starts to matter — the skill question

Here's where it gets more nuanced. Games of pure chance, like lotteries, lack the badges of trade to which traditional tests of business activity can be applied. Traditional tests to determine the existence of a business include an evaluation of a taxpayer's profit-making purpose and the commerciality of a taxpayer's activity.

The CRA acknowledges that if real skill or merit plays a part in determining the distribution of the prize, the scheme is not a lottery (unless it is based essentially on chance and the degree of skill is minimal). This matters because games with a meaningful skill component — think poker, or sports betting — are the ones most likely to attract scrutiny if played at high volume and with professional-level organization.

The issue of whether a taxpayer's activities constitute carrying on a gambling business is a question of fact that can be determined only by an examination of all the circumstances and the taxpayer's entire course of conduct. Although no single factor may be conclusive, relevant criteria include the degree of organization present in the pursuit of the activity, the existence of special knowledge or inside information that enables the taxpayer to reduce the element of chance, and the taxpayer's intention to gamble for pleasure as compared with any intention to gamble for profit.

The CRA's own audit manual offers an illustrative example: these cases relate to taxpayers who applied inside information, knowledge, and skill to their activities — for instance, in Luprypa v. The Queen, a pool player who in cold sobriety would challenge inebriated pool players was held to be taxable on his winnings. That's an extreme case, but it shows the direction of travel.

What this means practically for Ontario players

A recreational slots player grinding through a few sessions a week? Almost certainly non-taxable, regardless of how much they win on a given night. A poker player who approaches the game systematically, keeps meticulous records, plays for significant income, and has no other primary occupation? That's a much grayer area — and the skill element of poker makes it easier for the CRA to argue a business exists, compared to a pure-chance game where the argument barely gets off the ground.

Gambling is always undertaken in pursuit of profit — this was addressed in Balanko v. M.N.R., where the court stated that gambling with a view to profit is an intention "shared by all who gamble, and the presence of the intention to win or make money in gambling, which is there in all who gamble, does not lead to a conclusion that all who gamble, or even all those who gamble frequently, are carrying on a business." Wanting to win isn't enough on its own.

One practical note: income earned on gambling winnings is taxable — for example, any interest you earn when you invest lottery winnings must be reported on your return. So the winnings themselves may be clean, but what you do with them afterward can create a tax event.

Tax law here is genuinely fact-specific, and if you're playing at a volume or skill level where the question feels real, a Canadian tax accountant is the right call — not a casino guide. Make sure you're playing on a site registered in Ontario's regulated market (look for the iGaming Ontario and BetGuard logos as confirmation). And if gambling ever starts consuming more than you planned, ConnexOntario is available at 1-866-531-2600. Ontario's legal gambling age is 19+.