What PEG Means for Canadian DIY Investors

The PEG ratio takes a P/E and divides it by the company’s expected earnings growth rate. The idea is simple: a stock on 20 times earnings that grows earnings 20% a year may be better value than one on 12 times earnings growing 4%. PEG puts growth into the comparison, which plain P/E leaves out.

This post assumes you know the basics of P/E. If not, start with what P/E means for Canadian DIY investors and what forward P/E means. It is educational; all figures are hypothetical.

Direct answer

PEG = P/E ÷ expected annual EPS growth rate, with growth written as a whole number (12% growth = 12). A PEG near 1.0 is the classic “fair” rule of thumb that Peter Lynch popularized in One Up on Wall Street. Below 1 can mean growth is cheap; above 2 can mean you are paying a lot for growth. But PEG is only as good as the growth estimate behind it, and it breaks down for cyclicals, loss-makers, very slow growers and big dividend payers, which together make up a large share of the TSX.

The parts of PEG

Part	What it is	Where it comes from
Price	Current share price	Market quote (CAD for TSX listings)
EPS	Trailing or forward earnings per share	Filings (trailing) or estimates (forward)
P/E	Price ÷ EPS	Your calculation; see how to calculate P/E in CAD
Growth rate	Expected annual EPS growth, usually 3–5 years	Analyst consensus, guidance, or history
PEG	P/E ÷ growth rate	Your calculation

The P/E and the growth rate should describe the same earnings: if the P/E uses adjusted EPS, the growth rate should be for adjusted EPS too.

Reading a PEG (rules of thumb, not rules)

PEG	Common reading	What to check before agreeing
Below 0.5	Very cheap for its growth	Is the growth a one-time rebound or a cyclical peak?
0.5 – 1.0	Growth looks reasonably priced	How reliable and long-lasting is the growth?
1.0 – 2.0	Paying up for growth	Is there a moat, recurring revenue, a strong balance sheet?
Above 2.0	Expensive for its growth	Is growth too low for PEG to be useful (utilities, telecoms)?
Negative or n/m	Not meaningful	Losses or falling EPS: use other tools

The dividend fix: PEGY

Many TSX stocks return most of their profit as dividends, so their EPS grows slowly and their PEG looks high. A common adjustment is PEGY (sometimes called dividend-adjusted PEG): P/E ÷ (growth rate + dividend yield).

Hypothetical company	P/E	EPS growth	Dividend yield	PEG	PEGY
Utility-style payer	18.0x	5%	5%	3.60	1.80
Growth compounder	25.0x	18%	1%	1.39	1.32

The payer looks very expensive on PEG and reasonable on PEGY. Neither number is “right”; PEGY simply credits the cash you receive. Check dividend safety separately with FCF coverage of dividends.

Where PEG fits on the TSX

Sector	PEG usefulness	Why
Software and tech	Useful once profitable	Growth is the main driver of value
Industrials and rails	Moderate	Steady growth, but cycles affect EPS
Banks and insurers	Limited	Slow growth; P/B and ROE matter more
Utilities, pipelines, telecoms	Low; try PEGY	Low growth, high payouts
Energy and miners	Low	Commodity-driven EPS swings
REITs	Low	Use price/FFO or price/AFFO instead

Go deeper

Next, see how to calculate PEG in CAD from filings for a worked example, then when PEG misleads on TSX stocks for the traps. If you want a structured route through all the valuation basics, the start-here pathway puts them in order.

Related reading

• Myth: a low P/E always means cheap
• How to compare organic growth vs acquisition growth
• How to evaluate management guidance language
• Relative vs intrinsic valuation

Sources

• Peter Lynch with John Rothchild, One Up on Wall Street (1989), on the P/E-to-growth rule of thumb.
• IAS 33 Earnings per Share (basis for reported EPS).

Media credits

• Hero: “Green-bamboo-macro (Unsplash).jpg” by kazuend, CC0, via Wikimedia Commons. Cropped and resized to 1280x720. Real photograph of green bamboo stalks, not AI-generated.

By Andrew · stocksummarizer.com