You've probably seen it. Someone your age on TikTok, screen-recording a green number climbing in real time, captioning it: "Made $800 today doing this from my phone." The comments are three hundred people asking what app they use.
The appeal makes sense. The whole thing runs from your phone, and markets move every single day. Money is going somewhere, so why not toward you?
The math is where the appeal starts to break down.
Day Trading Sounds Simple Until You See Who You're Up Against
Day trading means buying and selling stocks within the same day to profit from short-term price movements. You buy shares of a company at 9:30 AM when the price is $45. The stock climbs to $47 by noon. You sell before the market closes at 4:00 PM and pocket $2 per share.
That's the idea, and on paper it looks clean and repeatable.
The problem is who else is at the table. The person on the other side of your trade has probably been doing this for decades, with a research team behind them and expensive proprietary tools you will never find in an app store. And a lot of the time there is no person there at all. Algorithmic trading systems spot the same signal you spotted and execute thousands of transactions per second, long before your thumb reaches the buy button.
The person in the viral clip is showing you one afternoon, and the losing weeks stay off the feed.
Most People Who Try This Lose Money, and the Studies Agree
Studies on day trading outcomes are remarkably consistent. Between 70 and 80 percent of day traders lose money over time. That figure holds across months and years, well past the point where one bad stretch could explain it.
A 2020 study in Brazil tracked thousands of people who seriously tried day trading over several years. Only 3 percent of them were consistently profitable.
Three percent.
Ninety-seven out of every hundred people who tried this, with real effort and real money, lost. The study also found that even among people who kept going for years and built experience, the results stayed roughly the same. Experience did not flip the odds the way you might expect.
The same pattern appears in study after study, across different countries and different markets. Stay curious about markets if you want to. Just know the odds before you put real money in.
Why It's Especially Hard When You're Starting Out
Even if you have genuine interest in markets and unusual discipline, some structural things work against you at this stage.
Capital gains tax applies to your profits. In Canada, when you sell a stock for more than you paid, the gain is taxable and gets reported to the CRA. Day trade in a non-registered account and a slice of every winning trade belongs to the government. Most day trading calculators understate that line.
Transaction costs eat small accounts. Even commission-free platforms have spreads, which is the gap between what a buyer pays and what a seller receives. On small account sizes, those costs take a meaningful slice of any gains.
Emotional decision-making is expensive. Losing $300 in two hours creates pressure to make it back fast, and that pressure leads to worse decisions, each one setting up the next. Professional traders have systems to manage this. Beginners learn it the hard way.
You're competing against algorithms. Professional trading systems detect the same market signals you do and act on them automatically, before you've finished reading the chart. Most grown adults with years of retail investing behind them can't consistently beat those systems either.
The Boring Alternative Beats 97 Percent of Day Traders
Set the viral clip next to a plain index fund.
The S&P 500 index, which tracks 500 large American companies, has averaged roughly 10 percent annually over long periods. Canadian all-in-one ETFs like XEQT or VEQT hold thousands of companies across global markets and have similar long-run return expectations, though past performance doesn't guarantee future results.
Ten percent a year sounds less exciting than $800 in an afternoon. It is less exciting.
Picture this: you open a TFSA at 18, put $1,000 into an index ETF, and add $100 a month until you're 31. At a conservative 7 percent average annual return, accounting for some bad years, you'd have roughly $27,000. Time and compound interest did the work while you were busy with school and everything else.
The TFSA itself matters here. The 2026 annual TFSA contribution limit is $7,000, and any investment growth inside a TFSA is completely tax-free. No capital gains tax on what you earn inside it. Day trading in a non-registered account gives you the opposite situation. Every gain is taxable, and the tax return gets complicated fast once you are tracking every trade and every loss.
What to Do with the Curiosity
Wanting to understand how markets work is a good impulse. Point it somewhere it can pay off.
If you want to learn, read first. "The Simple Path to Wealth" by JL Collins is a clear starting point for understanding how index investing works and why it beats most active strategies over time. The Personal Finance Canada community (r/PersonalFinanceCanada on Reddit) is full of Canadians at every level having honest conversations about investing basics. Learn what an ETF actually is and what management fees cost you over decades. That knowledge compounds right alongside the money.
If you want to try picking individual stocks, set aside a small amount you could genuinely afford to lose. Two or three hundred dollars, and track every decision. After six months, compare your results to a basic index fund. Most people find that exercise clarifying in a hurry.
Keep the majority of your investing money in something simple, the approach laid out in how to invest your first $500. A trading app, if you ever open one, gets the experiment money and nothing more.
Your Next Step
This week, one of these.
If you don't have a TFSA yet, put your 18th birthday in your calendar with a note. Wealthsimple and most major Canadian banks let you open one at 18. Plan to do it that same month.
If you already have a TFSA with cash sitting in it earning close to nothing, look into a single all-in-one ETF like XEQT or VEQT. One purchase gets you thousands of companies across the world, with low fees, and it rebalances itself.
Boring, and it works.
The trading app will still be there. The compounding years you spend waiting will not come back.