How does the CRA decide whether gambling winnings are taxable or tax-free in Canada?

Canada's tax treatment of gambling winnings trips up a lot of people because the default answer — "winnings are tax-free" — is true for most recreational players, but it comes with a meaningful exception that can flip the result entirely. Here's how the CRA actually thinks about it.

The starting point: winnings are generally not taxable

Lottery winnings of any amount are listed by the CRA among amounts that are not reported or taxed — unless the prize can be considered income from employment, a business or property, or a prize for achievement. The same logic extends to casino and sports-betting winnings for the typical recreational player. If you sit down at an online blackjack table on a licensed Ontario platform, run up a profit, and cash out, the CRA's default position is that you've received a windfall — not income — and you don't owe tax on it.

This matters for Toronto players specifically because Ontario's regulated online market (managed by iGaming Ontario and overseen by the AGCO) operates entirely within Canadian law. Winnings from a registered Ontario operator are treated the same as winnings from any other Canadian gambling source — the jurisdiction of the platform doesn't change the tax analysis.

The exception that changes everything: carrying on a business

An individual's gambling activities may result in taxable business income or a business loss — but only if the gambling activities constitute a source of income, meaning the person is carrying on the business of gambling. That's the hinge the CRA turns on.

Whether a taxpayer's activities are such that they can be considered to be carrying on a gambling business is a question of fact, determined only by examining all of the circumstances and the taxpayer's entire course of conduct. Although no single factor is conclusive, the CRA considers: the degree of organization in pursuing the activity, the existence of special knowledge or inside information that reduces the element of chance, and the taxpayer's intention to gamble for pleasure compared with any intention to gamble for profit as a means of gaining a livelihood.

Determining the commerciality of gambling can be challenging. Games of pure chance, like lotteries, lack the badges of trade to which the traditional tests of business activity can be applied. Skill-based play — card counting, professional poker, systematic sports betting with proprietary models — is where the business-income question becomes live. The CRA's folio is explicit that gambling is always undertaken in pursuit of profit, so the mere fact that you want to win isn't enough to make you a gambling business; the agency looks at the totality of how you operate.

A quick note for the 19+ adults reading this: if you're playing for fun on a regulated Ontario site, the tax question is essentially settled in your favour. If you're wondering whether ConnexOntario (1-866-531-2600) can help with anything beyond the tax side of things — they support anyone whose gambling is becoming a concern.

One thing that's always taxable: returns on winnings

Even if your winnings themselves are tax-free, what you do with them matters. Income earned on non-taxable amounts is taxable — for example, any interest earned when you invest lottery winnings must be reported on your return. Park your casino profits in a GIC or a brokerage account, and the CRA will want its share of whatever that money earns going forward.

What about winnings from U.S. casinos?

Worth knowing if you travel: if you received U.S. lottery or gambling winnings, you do not report this income on your Canadian income tax return, as it is not taxable in Canada — and you cannot claim a credit for any taxes withheld on those winnings. The U.S. typically withholds 30% from Canadian winners at American casinos; recovering that withholding is a separate process handled through the IRS, not the CRA.

The practical takeaway

For the overwhelming majority of Toronto players using a licensed Ontario platform recreationally, gambling winnings are tax-free. The CRA's business-income exception is real, but it targets people whose gambling looks more like a systematic commercial enterprise than leisure — high frequency, skill-based methods, organized record-keeping with a profit motive, and a pattern that suggests gambling is how they earn a living. If you're unsure where you fall, a tax professional familiar with Canadian income tax is the right call; the CRA's own guidance on this (Income Tax Folio S3-F9-C1) is publicly available at canada.ca and worth reading if you want the full picture.

Always make sure any Ontario platform you use is registered — the iGaming Ontario and BetGuard logos on a site confirm it's operating within the regulated market.