Granthara15.02.02PEG and growth-adjusted pricing

Bharat Foods is illustrative. Every growth rate on this page is an alternative teaching estimate, not a company forecast or a recommendation.

15.02.02 · PEG and growth-adjusted pricing

PreviouslyP/E says how much equity price is being paid for one rupee of earnings. It does not say how fast those earnings may grow.

One P/E. Three growth stories.

Two companies both trade at 20 times earnings. One is expected to grow EPS by 8%; the other by 20%. P/E calls them equal. PEG tries to put the missing growth assumption on the page.

PEG divides a price multiple by an expected growth rate. It exposes an assumption; it does not make the assumption reliable.

Updated

1.7
Bharat Foods' 20× P/E ÷ an illustrative 12% EPS-growth estimate
Part 15 · Multiples
  1. 15.02.01 P/E, trailing vs forward
  2. 15.02.02 PEG and growth-adjusted pricing
  3. 15.02.03 P/B and when book value matters
  4. 15.02.04 P/S and pre-profit businesses
  5. 15.02.05 EV/EBITDA and EV/Sales — capital-structure-neutral views
  6. 15.02.06 Dividend yield and yield-based valuation
  7. 15.02.07 Choosing the right multiple for the right business
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What PEG adds

The price/earnings-to-growth ratio, or PEG, divides P/E by an expected earnings growth rate. Bharat Foods trades at 20×. Using an analyst's illustrative 12% EPS-growth estimate gives 20 ÷ 12 = 1.7.

The convention enters 12% as the number 12, not 0.12. That convention is why a PEG near 1 can appear when P/E and the stated percentage growth happen to have the same number. It is a comparison shorthand, not a law of finance and not a value in rupees.

PEG makes one useful question visible: how much P/E am I paying for the growth somebody expects? It is most useful when profitable businesses have positive, reasonably stable earnings and their growth estimates use the same period and method.

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The denominator is an estimate of an estimate

Before calculating PEG, define the growth rate. Is it next year's EPS growth, an analyst's three-year compound estimate, or a long-term forecast? Is the P/E trailing or forward? Different data services can make different choices and display different PEGs for the same share.

For Bharat Foods, 12% takes expected EPS from ₹25 to ₹28 for the next year. A five-year growth estimate would make a different claim. Comparing one-year growth for one company with five-year growth for another turns the result into false precision.

The forecast can also change faster than the price. If an analyst cuts expected growth from 12% to 8% while the P/E remains 20×, PEG rises from 1.7 to 2.5. Nothing in that movement proves the share's value changed by the same amount.

See it

Hold P/E at 20×. Change only expected growth.

Select an alternative analyst estimate. The business and price have not been revalued; only the growth input changes.

PEG is highly sensitive to the forecast in its denominator. A cleaner-looking output can rest on a harder-to-defend assumption.

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Why PEG of 1 is not a valuation law

You may hear that PEG below 1 is cheap, 1 is fair and above 2 is expensive. Those are market rules of thumb, not conclusions produced by valuation theory. The relationship between growth and value is not one-for-one.

Growth is more valuable when it can last, when risk is lower and when each retained rupee earns a strong return. The same 20% EPS growth is less attractive if it needs continual share issues, heavy borrowing or ₹20 of new investment to create ₹1 of extra profit. PEG does not show any of that.

It also does not adjust for payout policy. Two companies with the same P/E and forecast growth can distribute different amounts of cash. Nor does it explain whether the forecast came from organic demand, an acquisition, a temporary low base or fewer shares after a buyback.

Read PEG as price relative to one stated growth estimate, then return to the business drivers. Do not turn a convenient threshold into an automatic decision rule.

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When PEG becomes unhelpful

With zero or negative expected growth, the denominator is zero or negative and the ratio does not provide a sensible ranking. With very small positive growth, PEG can become enormous even when the underlying P/E is ordinary.

With unstable or cyclical earnings, a single growth percentage can describe recovery from a trough rather than durable expansion. With a loss-making business, P/E has already failed, so PEG built on it fails too.

With very high long-term forecasts, the main question is duration. Few businesses can compound at exceptional rates indefinitely. Test how many years the estimate covers, what market share it implies and how much capital the company must keep reinvesting.

If the forecast cannot be stated and defended in one clear sentence, the PEG calculated from it deserves no extra authority.

Try it

Two profitable companies both trade at 20× P/E. Their consistently measured expected EPS growth is 20% and 8%. What can PEG support?

Try it

Which practices make a PEG comparison usable?

Use the same P/E basis and the same EPS-growth period for both companies
Treat every PEG below 1 as a buy signal
Write the forecast source and update date beside the growth rate
Calculate PEG from negative earnings because the formula still returns a number
Check whether EPS growth comes from operating progress, acquisitions or fewer shares
Compare a one-year growth estimate with another provider's five-year estimate
Test the capital and risk required to sustain the expected growth

The five-question checkWhy? Put one stated growth estimate beside P/E. · Who uses it? Analysts comparing profitable growth businesses. · When? P/E and positive EPS growth share a basis, source and horizon. · Why not? Negative, near-zero or unstable growth breaks it. · What will you miss? Risk, payout, reinvestment efficiency and growth duration. Write the full sentence: 20× P/E ÷ an analyst's 12% expected EPS growth = 1.7.
Remember

PEG is P/E divided by a clearly defined expected EPS-growth rate. It makes growth visible but leaves forecast error, duration, risk, payout and reinvestment outside the number. PEG of 1 is arithmetic under a convention, not proof of fair value.

Everything this chapter has told you, in order

  1. 15.02.01P/E is price divided by a clearly defined EPS; the number is meaningful only when the earnings basis, durability, growth and risk are understood.
  2. 15.02.02PEG divides P/E by expected EPS growth in percentage points, but growth durability, risk, payout and reinvestment quality remain outside the ratio.
Next
15.02.03 — P/B and when book value matters

Next: P/B moves from earnings to the balance sheet — and becomes useful only when book value is paired with the return it can sustain.