TFSA Millionaires Are Learning They Can Still Be Taxed

If you day trade stocks like Shopify (TSX:SHOP) in a TFSA, you may be taxed.

| More on:

Ah, the tax-free savings account (TFSA). Who doesn’t love it? With thousands in annual contribution room, the TFSA lets you keep 100% of your stock market returns forever… right?

Well, not quite. Once you put your money into a TFSA, the CRA can find out that it’s there. TFSAs are administered by Canadian brokers, who report account data to the agency. If the CRA finds out that you’ve been breaking the account rules, you may very well be taxed.

For many TFSA millionaires, it’s a lesson they’ve had to learn the hard way. There have been several cases of Canadians running up their TFSA balances into the millions, only to have the CRA come after them for tax money. One trader named ‘John’ ran up a $1.25 million balance and received a CRA inquiry.

It might not seem fair, but the underlying rationale is sound. The TFSA was designed to shelter passive savings. It was not built for day trading. If you spend all day in front of a computer trading options, you look more like a business owner than a passive stockholder. In the CRA’s eyes, you’re not using the TFSA as intended.

How to avoid being taxed for day trading in your TFSA

There are several ways to avoid being taxed for day trading in your TFSA. The most obvious one is to simply buy and hold stocks, rather than attempt to trade them frequently. Studies show that less than 1% of people who try day trading ever make money at it. Meanwhile, countless investors make money sitting on diversified portfolios, such as index funds. The “buy and hold” portfolio strategy makes sense, is profitable, and makes it harder for someone to accuse you of running a day trading business. It’s a no-brainer.

We can illustrate the wisdom of the “buy and hold” strategy by considering the case of Shopify Inc (TSX:SHOP). Shopify stock has done incredibly well since its IPO. SHOP stock has risen 2,971% in the markets. The e-commerce platform has grown its profit by over a thousand percentage points. It was for a time the largest publicly traded company in Canada.

By simply buying and holding Shopify stock from 2019 or earlier, you’d have done well.

Major volatility

However, Shopify’s run has been very volatile. There have been several 10% daily swings in its price. There was one point when the price declined 82% in a few months. Basically, there have been plenty of opportunities to lose money in Shopify stock. As the legendary Howard Marks says, it’s possible to earn sub-par returns in great stocks by trading in and out of them too often. That’s a lesson most day traders learn the hard way.

And if you do succeed in day trading? Beware the CRA. If you day trade options and realize superior returns, that’s when the tax agency could come knocking. So, day trading in a TFSA is risky no matter what. If you’re like most day traders you’ll lose money. If you’re in the elite 1%, you may lose your TFSA account benefits. Ouch.

Foolish takeaway

The bottom line on TFSAs is that they can save you a lot of money if you use them right. Hold a diversified TFSA portfolio and you’ll probably do well. Follow an ill-advised strategy, such as day trading, and you might get burned.

Fool contributor Andrew Button has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Shopify. The Motley Fool has a disclosure policy.

More on Tech Stocks

3 colorful arrows racing straight up on a black background.
Tech Stocks

The 3 Most Popular Stocks on the TSX Today: Do You Own Them?

The three most popular TSX stocks remain strong buys for Canadian investors who missed owning them in 2025.

Read more »

Quantum Computing Words on Digital Circuitry
Tech Stocks

Quantum Computer Company Xanadu Is Set to Go Public: Should Investors Buy the ‘IPO’?

Canada's very Xanadu is going public. Will it go parabolic like IonQ (NYSE:IONQ) did?

Read more »

A shopper makes purchases from an online store.
Tech Stocks

Is Shopify Stock a Buy, Sell, or Hold for 2026?

Shopify (SHOP) may lead the AI-driven agentic commerce era, delivering double-digit revenue and earnings growth in 2026, but will that…

Read more »

Quantum Computing Words on Digital Circuitry
Tech Stocks

Investors: Canada’s Government Is Backing Quantum Computing

Here’s what the Canadian government’s major new investment in quantum computing means for investors.

Read more »

top TSX stocks to buy
Tech Stocks

As the TSX Breaks Higher, These Canadian Stocks Look Poised to Win in 2026

Three Canadian stocks with high-velocity growth potential could be among TSX’s winning investments in 2026.

Read more »

warehouse worker takes inventory in storage room
Tech Stocks

Outlook for Shopify Stock in 2026

Shopify has delivered another strong year, but the bigger question now is whether its expanding platform and AI push can…

Read more »

AI concept person in profile
Tech Stocks

TFSA Wealth Plan: Create $1 Million With a Single Canadian Stock

Topicus could help build a $1 million TFSA thanks to sticky software, recurring revenue, and a disciplined acquisition engine if…

Read more »

AI image of a face with chips
Tech Stocks

The Market Sold BlackBerry After Its Earnings Beat – Here’s Why I’d Buy More

BlackBerry (TSX:BB) beat expectations again, yet the stock slipped, and a closer look at its latest numbers shows why that…

Read more »