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Day trading taxes in Canada come down to one question: does the CRA see you as running a business or as an investor? If it’s a business, every dollar of profit is fully taxable. If it’s investing, only half of a gain is taxable. On a $30,000 profit and $60,000 of pay in Ontario, that gap is about $3,650 of income tax for the year.
Are day trading profits a capital gain or business income?
There’s no bright line, and no number of trades that flips you from one side to the other. The CRA looks at how you behave. Its older bulletin on securities transactions, now archived, lists the things it weighs, and courts have used the same tests.
| What the CRA looks at | Points toward business income |
|---|---|
| Frequency | Extensive buying and selling, quick turnover |
| Holding period | Days or hours rather than years |
| Knowledge and time | You know the markets and spend real time on them |
| Financing | Most of the money is borrowed or on margin |
| What you buy | Speculative shares that pay no dividends |
| Short sales and naked options | Presumed to be on income account |
Somebody who places twenty trades a day from a desk, on margin, in shares that pay no dividends, will have a hard time arguing for capital treatment, while somebody who buys a few shares each year and sells some of them is an investor. Most of us sit somewhere in between.
What does the difference cost you?
Here’s a case. You earn $60,000 in Ontario and make $30,000 from trading. The income tax calculator shows $8,320.50 of federal and Ontario tax on the $60,000 alone.
Treat the $30,000 as a capital gain and the total becomes $12,918.00, so the trading adds $4,597.50. Treat it as business income and the total is $16,569.53, which adds $8,249.03. The CPP and EI line also rises by $3,153.50, because business income carries contributions too. Expenses you could deduct against business income aren’t in this example.
So the half-taxable rule is worth a lot. You can test your own numbers in the capital gains tax calculator. About the rate itself: the planned rise to two-thirds was cancelled in the Prime Minister’s release of 21 March 2025. We couldn’t find the 2026 inclusion rate printed on a CRA page, so we assume 50%.
Can you choose capital treatment for your trades?
Partly. For Canadian securities there’s an election on Form T123. Once you make it, your dispositions of Canadian securities are capital gains or losses, and the election applies to later years too. You can’t undo it.
Sounds handy.
The catch is that traders and dealers in securities can’t use it. A full-time day trader is exactly who the exclusion has in mind. Foreign stocks aren’t covered either. So the election suits a long-term investor who sometimes sells in a hurry, and it won’t rescue a real trading business.
How do trading losses work?
The same classification decides your losses. A capital loss only cancels capital gains. A business loss reduces your other income, such as your pay.
That sounds like a reason to claim business status when you’re losing money. But you can’t pick the label each year to suit the result. Calling a loss business income in a bad year and a gain capital in a good one is exactly the pattern that invites questions. Choose the treatment your activity supports, and keep it the same.
Mistakes that cost day traders
The big one is not reporting trades because no slip arrived. Gains count whether or not you got paperwork, so keep your own records of every trade. Another is ignoring tax instalments. A business profit with no tax taken off can leave a large bill in April, and the tax instalments calculator shows how the payments add up.
Then there are dates. For 2025 returns the general deadline was 30 April 2026. If you or your spouse are self-employed, you had until 15 June 2026 to file, but any balance was still due on 30 April. The 2026 dates aren’t published yet. And since the classification is a judgement call, don’t guess when real money is at stake. A tax preparer who handles trading income can look at your trade history before you file.
Where the numbers come from
Factors, the T123 election and loss rules come from CRA guidance on securities transactions and capital gains. Filing dates come from the CRA’s due dates page for the 2025 return. The worked example uses our 2026 federal and Ontario tax tables. It ignores the Ontario surtax edge cases, credits and your own deductions.
Frequently asked questions
Do day traders pay tax on all their profits?
If the CRA treats you as running a business, yes, the full profit is income. If your trades are capital gains, only half of each gain is taxable.
How many trades make me a day trader?
There's no set number. The CRA looks at frequency, how long you hold, your knowledge, your time, your financing and what you buy.
Can I treat my trading as capital gains by election?
Form T123 covers Canadian securities, but traders and dealers in securities can't use it. It can't be undone once made.
Can I deduct trading losses from my salary?
Only business losses can. Capital losses cancel capital gains and nothing else.
Do I pay instalments on trading profits?
Business profit has no tax taken off at source, so instalments can apply. Check the CRA page for the current rules.
- How Canadian income tax works: brackets and credits
How federal and provincial Canadian income tax stack up, what marginal and average rates mean, and how credits and deductions change your bill
Information only. This page is general information, not tax, legal or accounting advice. Tax-Services.ca is an independent publisher: we don't prepare or file tax returns or offer tax services, and we have no connection with the CRA, Revenu Québec, any government or any company named on this page. Check the figures that matter with an official source or a qualified professional.