How to Pick Stocks in Canada: A DIY Investor's Framework
To pick stocks in Canada, read the company's filings on SEDAR+, judge whether it can keep growing cash flow, and compare its price with peers using P/E, P/S, or P/B. Limit each position's size, and write a sell rule before you buy. Hold it in the right account, because the CRA taxes 50% of gains in taxable accounts in 2026.
- Start with the filings, not the chart. Canadian public companies file their annual reports, MD&A, and annual information forms on SEDAR+.
- Use ratios such as P/E, P/S, and P/B to compare a company with its peers and its own history. No single ratio tells you whether a stock is cheap.
- Position size limits the damage from being wrong. A 50% drop in a 5% position costs the portfolio 2.5%.
- The CRA says a TFSA that carries on a business is taxable on that income. Frequent short-term trading in a TFSA has been taxed in court.
- Capital losses only count in a taxable account. They can be carried back 3 years or forward indefinitely, and the 30-day superficial loss rule applies.
This is the pillar for DIY Stock Picking, part of the Investing category. It is for investors who want to own individual companies and are willing to read what those companies file. If you would rather own the whole market, start with couch potato investing.
Should you pick stocks at all?
Pick stocks only if you will do the reading and keep the records. Even then, most DIY investors are best off with an index-fund core and individual stocks as a smaller part, often called a satellite. You are competing against professionals who read the same filings full time. An index fund owns every company and gives you the market's return, minus a small fee. Your picks need to beat that return after costs and taxes for the effort to pay off.
| Approach | Work required | Main risk | Fits when |
|---|---|---|---|
| Index ETFs only | Minutes a year | You get the market's return, including its bad years | You want the result without the research |
| Index core + stock satellite (e.g. 80/20) | A few hours per holding per year | The satellite trails the market; the damage is limited by its size | You enjoy research and want limited downside if you are wrong |
| All individual stocks | Ongoing, at least 15–25 holdings to diversify | Concentration, behaviour, and record-keeping errors | You treat it as a serious, ongoing commitment |
Where do you find what a company actually reports?
In its filings. Canadian public companies file on SEDAR+. US companies file on the SEC's EDGAR system. Read four documents before you buy:
| Document | Where | What to look for |
|---|---|---|
| Annual financial statements | SEDAR+ | Revenue, earnings, cash flow from operations, debt, and the notes on one-time items |
| MD&A (management's discussion and analysis) | SEDAR+ | Management's explanation of results, the risks it names, and its capital plans |
| Annual information form (AIF) | SEDAR+ | How the business makes money, where it operates, and the risk factors |
| Management information circular | SEDAR+ | How executives are paid, and whether that rewards per-share results or just size |
Read last year's MD&A next to this year's. What management promised, and what it later explained away, tells you more than any single number.
How do you judge the business?
Ask whether the company can keep earning more cash than it needs to stay in business, for years. That comes down to four questions. Answer each one in writing.
Explain it in two sentences: who pays, for what, and why they come back. If you cannot, stop here.
Switching costs, regulation, scale, a network, or a brand. Then name what could break that protection.
Compare debt with cash flow, and check when the debt has to be repaid. A good business with too much debt can still fail.
Track what it did with cash over five years: reinvestment, acquisitions, buybacks, and dividends. Then check whether results per share improved.
How do you tell if the price is reasonable?
Compare the price with what the business earns, sells, and owns, and then with similar companies. GetSmarterAboutMoney, the Ontario Securities Commission's investor site, explains three common ratios: price-to-earnings, price-to-sales, and price-to-book. Each one can mislead on its own.
| Ratio | Calculation | Useful for | Misleads when |
|---|---|---|---|
| P/E | Share price ÷ earnings per share | Steady, profitable businesses | Earnings are temporarily high or low, or include one-time gains |
| P/S | Market value ÷ annual revenue | Young companies with little profit yet | Profit margins are thin; revenue is not profit |
| P/B | Share price ÷ book value per share | Banks and insurers, where assets are mostly financial | Value comes from brands or software that are not on the balance sheet |
| Earnings yield | EPS ÷ share price (P/E inverted) | Comparing with a GIC or bond yield | Earnings are about to change sharply |
A hypothetical company. A P/E of 15 is neither cheap nor expensive until you compare it with peers, the company's own history, and how fast earnings can grow. If earnings are expected to shrink, 15 may be expensive. If they will grow steadily for a decade, it may be cheap.
How much should you put in one stock?
Set a maximum before you buy. Many DIY investors cap a single stock at 5% of the portfolio, and the whole satellite at 10% to 30%. The cap matters because some of your picks will be wrong.
Portfolio loss if one stock falls 50%, by position size (illustrative example)
Portfolio loss = position size × 50%. At a 5% position, a stock falling by half costs the portfolio 2.5%. At 20%, it costs 10%. This is arithmetic, not a forecast for any stock.
Gain needed to recover from a loss (illustrative example)
Recovery gain = 1 ÷ (1 − loss) − 1. A 50% loss needs a 100% gain just to get back to where you started. That is why it matters more to avoid large losses than to find the biggest winner.
When should you sell?
Sell when the reason you bought is no longer true, or when the position grows past your cap. Do not sell just because the price fell or rose. Write your reason for buying in one paragraph on the day you buy. Then use this decision tree.
"I am buying [company] at [price] on [date], as [x]% of my portfolio, because [how it makes money] and [what protects it]. I expect [measurable result, for example revenue per customer rising] by [date]. I will sell if [specific event: dividend cut, debt above a set level, losing a key customer]. I will trim if the position goes above [cap]%."
Which account should hold individual stocks?
A TFSA suits long-term holdings you expect to grow a lot, because the gain is tax-free. A taxable account is the only place where a capital loss can be used, and where Canadian eligible dividends get the dividend tax credit. An RRSP shelters growth but taxes every withdrawal as income. US stocks held directly in an RRSP can be exempt from US withholding on dividends.
| Account | Gains | Losses | Watch out for |
|---|---|---|---|
| TFSA | Tax-free | Not deductible, and the room is not restored | Business-like trading; foreign withholding tax |
| RRSP | Not taxed until withdrawn, then taxed as income | Not deductible | Losing room permanently when a holding falls |
| Non-registered | 50% of the gain is taxable | 50% is an allowable loss; carry back 3 years or forward indefinitely | Superficial loss rule; ACB records |
The CRA's capital losses page sets out the 50% inclusion rate that has applied since 2001, the three-year carryback, and the indefinite carryforward. It also describes the superficial loss rule: a loss is denied if you, or an affiliated person such as your spouse, buy identical property within 30 days before or after the sale and still hold it 30 days after. The denied loss is added to the ACB of the shares you bought back. The full rules are in the superficial loss guide. Timing is in the tax-loss harvesting calendar.
Provinces: the federal capital gains rules apply everywhere, and your province taxes the included half at its own rates. Quebec residents also report the gain on their Revenu Québec return. Securities regulation is provincial. Your regulator is the OSC in Ontario, the BCSC in British Columbia, the AMF in Quebec, and so on, all coordinated by the Canadian Securities Administrators.
What records do you need?
An ACB record for each holding in a taxable account, updated with every purchase, sale, reinvested dividend, and return of capital. Your broker's T5008 slip is not a complete ACB record. Use the adjusted cost base guide to keep one.
- Buying because the price fell, without reading the filings.
- Averaging down into a stock whose reason for buying has already broken.
- Letting one winner grow to 30% of the portfolio without deciding to.
- Selling at a loss and buying back within 30 days, including in your spouse's account.
- Day trading in a TFSA.
- Relying on the broker's book value instead of your own ACB record.
Checklist
- Annual report, MD&A, and AIF read on SEDAR+
- The four business questions answered in writing
- Valuation compared with peers and with the company's own history
- Position cap and satellite cap written down
- Buy note saved, with a sell rule
- Account chosen deliberately; ACB record started for taxable holdings
When to get help: if you trade often, hold large positions in a single company, or use a TFSA in a way that could look like a business, ask a CPA or tax lawyer before the CRA asks you.
Frequently asked questions
How many stocks should I own?
If stocks are your whole portfolio, enough to spread risk across sectors, often 15 to 25 or more. If they are a satellite around an index fund, a handful is fine because the index provides the diversification.
Is a low P/E stock a good buy?
Not on its own. A low P/E often means the market expects earnings to fall. Compare with peers and the company's own history, and read the MD&A for the reason.
Can I day trade in my TFSA?
The CRA can tax a TFSA that carries on a business, and the courts have upheld that for frequent short-term trading. Trade long-term in a TFSA.
What happens to a capital loss I cannot use this year?
In a taxable account, a net capital loss can be carried back three years or forward indefinitely against taxable capital gains, using Schedule 3 or Form T1A for a carryback.
Should I buy Canadian or US stocks?
Either can work. Canadian eligible dividends get the dividend tax credit in a taxable account. US stocks add sectors the TSX lacks, but they involve currency conversion and US withholding tax on dividends. Read the withholding tax guide.
Where can I check whether a broker or advisor is registered?
Use the Canadian Securities Administrators' National Registration Search at aretheyregistered.ca.
Do I need to report every trade?
Every sale in a taxable account is reported on Schedule 3, with your own ACB. Trades inside a TFSA or RRSP are not reported, unless the CRA treats the TFSA activity as a business.
Sources
- CRA: Capital losses (inclusion rate, carryback and carryforward, superficial loss), reviewed October 23, 2026
- CRA: TFSA issuers, tax implications (TFSA carrying on a business), reviewed October 23, 2026
- GetSmarterAboutMoney (OSC): How to evaluate companies when buying stock, reviewed October 23, 2026
- SEDAR+ and CSA National Registration Search
- Ahamed v. The King, 2023 TCC 17; Canadian Western Trust Company v. The King, 2024 FCA 108
Related reading
- Adjusted cost base guide
- Superficial loss rule
- Tax-loss harvesting calendar
- Should Canadians sell US stocks?
- Dividend investing in Canada
Every sale in a taxable account ends up on your tax return.
The 2026 tax guide covers capital gains and losses from the filing side.
Get the 2026 Tax Guide — $49 CAD
