3 Mistakes Canadian Stock Investors Might Be Making

Fixing these three common errors can help you improve your net returns.

man crosses arms and hands to make stop sign

Source: Getty Images

Every so often, I hear from readers who assume I’m going to tear apart their stock picks when they ask for feedback. But this isn’t about whether or not you choose the right stock.

It’s about avoiding easy-to-fix mistakes that can quietly cost you money. Most are about knowing the tax rules, account types, and little traps in the Canadian investing landscape. Here are three to watch out for.

TFSA withholding tax

One of the most common oversights I see is holding U.S. stocks or ETFs in a Tax-Free Savings Account (TFSA). While the TFSA shelters you from Canadian taxes on gains and income, it doesn’t stop the U.S. from withholding 15% of any dividends paid. You can’t claim a foreign tax credit to recover that amount in a TFSA, so the money is just gone.

If you’re investing in U.S. dividend payers, you’re better off holding them in a Registered Retirement Savings Plan (RRSP), where that withholding is waived under the Canada-U.S. tax treaty. In a TFSA, sticking to Canadian or non-dividend-paying U.S. stocks can help you avoid this leak.

REITs in taxable accounts

Another expensive slip-up is holding real estate investment trusts (REITs) in a taxable account. REIT payouts are often a messy mix of regular income, capital gains, and return of capital, with the regular income portion taxed at your full marginal rate. That can be much higher than the tax on eligible Canadian dividends or capital gains.

If you like REITs for their yield, keep them in a TFSA or RRSP where the income isn’t taxed annually. In a taxable account, you could be giving away a chunk of your return every year to the CRA.

Penny stocks in registered accounts

Finally, there’s the issue of penny stocks in registered accounts. If a speculative pick goes to zero in a TFSA or RRSP, you can’t claim a capital loss to offset other gains. That loss room is just gone, and unlike in a taxable account, you can’t carry it forward to use in future years.

It’s one thing to take a calculated swing on a small-cap or high-risk name, but if you’re doing it inside a registered account, you’re losing the ability to at least get some tax value back if it fails. For most investors, speculative bets are better left in taxable accounts where losses can serve some purpose if things go south.

The Foolish takeaway

Don’t panic if you’ve been making one of these mistakes. They’re easy to fix and won’t sink your portfolio on their own. The key is to optimize where you hold certain investments so you keep more of what you earn. A quick account shuffle can save you from unnecessary taxes and missed deductions, letting your returns compound more efficiently over time.

Fool contributor Tony Dong has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.

More on Investing

Business success of growth metaverse finance and investment profit graph concept or development analysis progress chart on financial market achievement strategy background with increase hand diagram
Dividend Stocks

1 Impressively Awesome Canadian Dividend Stock Down 38% to Hold for Decades

Fiera Capital’s pullback may be a chance to lock in a big dividend from a fee-driven asset manager reshaping for…

Read more »

Yellow caution tape attached to traffic cone
Dividend Stocks

The CRA Is Watching TFSA Holders: Here Are Some Red Flags to Avoid

In your TFSA, consider long‑term investments, track your contribution room and withdrawals, and avoid leverage, rapid trading, and non‑qualified assets.

Read more »

is telus stock a buy for its dividend yield
Tech Stocks

9% Yield: Is Telus’s Dividend Safe?

Telus announced a major change in its dividend strategy: It is stopping regular increases in its dividend while maintaining the…

Read more »

woman checks off all the boxes
Investing

My 2 Favourite Stocks to Buy Right Now

Given their solid underlying businesses and robust growth prospects, these two Canadian stocks can deliver superior returns in the long…

Read more »

diversification and asset allocation are crucial investing concepts
Dividend Stocks

Canadian Dividend Stars to Add to Your 2026 Portfolio

These Canadian dividend stars have consistently paid and increased their dividends for decades, making them reliable income stocks.

Read more »

tsx today
Stock Market

TSX Today: What to Watch for in Stocks on Monday, December 8

After Friday’s pullback, the TSX benchmark could face a cautious start to the week today amid central bank uncertainty and…

Read more »

monthly calendar with clock
Dividend Stocks

This 7.3% Dividend Stock Could Pay Me Every Month Like Clockwork

This Walmart‑anchored REIT pays monthly and is building for growth. See why SRU.UN can power tax‑free TFSA income today and…

Read more »

open vault at bank
Bank Stocks

Canadian Bank Stocks Appear Unstoppable: Here’s the One I’d Buy Right Here

TD Bank (TSX:TD) and other Big Six banks blew reported good results for their latest quarters.

Read more »