Price-to-earnings ratio (PE ratio) is the current share price of a stock divided by its earnings per share (EPS).
PE = Share Price ÷ Earnings Per Share
If a stock trades at ₹1,000 and its EPS over the last 12 months is ₹50, the PE ratio is 20. This means investors are currently paying ₹20 for every ₹1 of annual earnings.
Trailing vs Forward PE
Trailing PE uses the last 12 months of actual reported earnings. It is objective — the earnings are known — but it is backward-looking.
Forward PE uses analysts' projected earnings for the next 12 months. It is more relevant for valuation but carries the uncertainty of estimates. Forward PE is often used by institutional analysts to assess whether current price reflects expected future earnings, not just historical ones.
When reading a PE quoted on NSE, BSE, or financial platforms like Screener.in or Moneycontrol, verify whether it uses trailing (TTM — trailing twelve months) or forward earnings.
Sector Context Is Essential
PE varies significantly by sector. Comparing a banking stock's PE to an FMCG company's PE is not meaningful — the businesses have different growth rates, capital structures, and earnings quality.
Approximate PE ranges for Indian sectors (these shift with market conditions):
- FMCG (Hindustan Unilever, Nestle India): typically 50–80x — high PE because of predictable, high-quality earnings
- IT services (TCS, Infosys): typically 25–35x
- Banking/NBFC: typically 10–20x — lower because capital-intensive businesses are valued differently
- PSU stocks: often below sector peers due to governance discount
- Small-cap growth companies: can exceed 80–100x if market expects high earnings growth
A stock with PE of 35x is "expensive" if its sector peers average 15x. It is "cheap" if its sector peers average 60x.
The Nifty PE — Valuations in Context
NSE publishes the Nifty 50 PE ratio daily. Historically:
- Nifty PE below 15x: significant undervaluation — rare, typically during crisis (2008, March 2020)
- Nifty PE 15–22x: historical fair value range
- Nifty PE above 25x: elevated — does not predict when a correction will occur, but signals stretched valuations
The Nifty PE as published includes index constituents as a group. It is most useful as a context indicator — not to time the market, but to calibrate reasonable expectations for future returns.
PE Limitations in Indian Markets
Earnings manipulation: Indian promoter-driven companies have historically faced accusations of inflated earnings — inflated revenues, understated costs, related-party transactions that artificially boost the P&L. PE calculated on manipulated earnings is misleading.
Cyclicality: For cyclical businesses (steel, cement, chemicals), PE can be misleadingly high at earnings troughs and misleadingly low at peaks. A PE of 5x for a steel company may look like a bargain but may reflect peak earnings that are about to collapse.
One-time items: A company that sold an asset or booked an exceptional gain can show artificially low PE that reverses in the following year.
Cross-reference PE with actual cash generation (operating cash flow), return on equity, and consistency of earnings across cycles before drawing conclusions.
For educational purposes only. Profitma is not a SEBI-registered investment adviser or research analyst. Nothing in this article constitutes investment advice.