How do Canadian tax rules treat winnings from games of skill versus games of chance?

For most Ottawa residents playing at regulated Ontario online casinos, gambling winnings — whether from slots, roulette, poker, or blackjack — are not taxable income. That's the default position under Canadian tax law, and it holds for the vast majority of recreational players regardless of whether the game involves skill or pure chance. But the skill-versus-chance distinction does matter in one specific, important way: it affects how the CRA decides whether your gambling has crossed the line into a taxable business.

The baseline: winnings are generally not taxable

Lottery winnings of any amount are not reported or taxed, unless the prize can be considered income from employment, a business or property, or a prize for achievement. The CRA extends this logic broadly to gambling winnings — 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 the question isn't really "skill or chance?" in isolation — it's "are you running a gambling business?"

That said, skill is a major factor in how the CRA answers that second question. And if you're 19+ and playing on a licensed Ontario platform (you can confirm a site is properly registered by checking for the iGaming Ontario and BetGuard logos), this tax framework applies to your winnings.

Where skill changes the picture

There are some exceptional cases where gambling activities have been held to be taxable — and these cases relate to taxpayers who applied inside information, knowledge and skill to their activities. The CRA's own folio cites a well-known example: in Luprypa v. The Queen, a pool player who in cold sobriety would challenge inebriated pool players to a game of pool was held to be taxable on his winnings. That's an extreme illustration, but it captures the principle — if you're systematically exploiting an edge through skill, the CRA may view that as a business.

For online casino players in Ottawa, poker is where this most often comes up. A recreational player who logs on occasionally is almost certainly not taxable. A player who treats it as a structured, full-time pursuit — tracking results meticulously, studying strategy, relying on winnings as income — is in murkier territory. Whether a taxpayer's activities constitute a gambling business is a question of fact determined by examining all circumstances and the taxpayer's entire course of conduct, with criteria including the degree of organization present, the existence of special knowledge or inside information that reduces the element of chance, and the taxpayer's intention.

Importantly, frequency alone doesn't flip the switch. Gambling — even regular, frequent and systematic gambling — is something that by its nature is not generally regarded as a commercial activity except under very exceptional circumstances. Courts have been reluctant to tax even habitual gamblers unless skill and systematic profit-seeking are clearly present.

Pure chance games: slots, roulette, and the like

For games where outcomes are entirely random — online slots, roulette, baccarat — the skill argument essentially doesn't apply. There's no edge to exploit through knowledge, so the CRA has no basis to treat winnings as business income. 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. Slot wins fall squarely on the "essentially chance" side, making taxable-business treatment extremely unlikely for any recreational player.

One thing that is always taxable: investment returns on winnings

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 if you withdraw a big win and put it in a GIC or investment account, the returns from that investment are fully taxable — even though the original win was not.

The bottom line for Ottawa players

If you're a recreational player — even a regular one — your winnings from Ontario-licensed online casinos are almost certainly not taxable under Canadian law. The skill-versus-chance distinction matters primarily at the edges: it's the key factor the CRA looks at when deciding whether a sophisticated, systematic gambler has tipped into running a taxable business. For poker players who play seriously and at volume, that's worth thinking about. For everyone else, your cashouts are yours to keep.

Tax law in this area is genuinely fact-specific, so if you're ever uncertain about your own situation, a Canadian tax professional is the right call — not a general guide. If gambling ever becomes stressful rather than recreational, ConnexOntario (1-866-531-2600) is available around the clock.