Published 26 Sep 2026 · Last reviewed 26 Sep 2026 · 2 min read
In short: The price-to-earnings ratio equals market price per share divided by earnings per share. It shows how much the market pays for each rupee of current earnings; it does not say whether a stock is automatically cheap or expensive.
Example
If a share trades at ₹300 and trailing EPS is ₹15, its trailing P/E is 20. The number is meaningful only if earnings are positive, comparable and not unusually distorted.
Trailing and forward P/E
Trailing P/E uses reported earnings; forward P/E uses estimates and therefore adds forecast risk. State which one you use.
Why P/E differs
Growth expectations, business quality, cyclicality, interest rates, leverage and accounting quality affect multiples. Compare similar businesses and the company’s own history.
When P/E fails
Loss-making firms have no meaningful positive P/E. Cyclical earnings at a peak can make a risky stock look deceptively cheap.
Use a dashboard
Combine P/E with cash flow, return on capital, debt, margins, governance, competitive position and valuation scenarios.
Action checklist
- Write down the goal, amount and deadline.
- Check liquidity, risk, costs, tax and exit restrictions.
- Use only regulated intermediaries and original documents.
- Record assumptions and review after major life or rule changes.
Sources and methodology
We prioritised official Indian regulator, tax authority and industry-body material. Numerical examples are illustrations, not forecasts. Product rates, limits and taxation should be rechecked on the transaction date.
- NSE India — Investor education (accessed 2026-09-26)
Frequently asked questions
Is this article investment advice?
No. It is general education. Your goals, taxes, cash flow and risk capacity require individual assessment.
Can returns be guaranteed?
No. Market-linked investments can lose value; past performance does not guarantee future results.
What is the quick answer on P/E Ratio?
The price-to-earnings ratio equals market price per share divided by earnings per share. It shows how much the market pays for each rupee of current earnings; it does not say whether a stock is automatically cheap or expensive.
PE ratio explained
Last reviewed: September 2026 · Educational only — not investment, tax, legal or property advice. See Disclaimer.