What is PE Ratio and Why It Matters for Indian Stocks

The Price to Earnings ratio, commonly known as PE ratio, is one of the most fundamental metrics used to evaluate whether a stock is expensive or cheap relative to its earnings. For Indian investors trading on NSE and BSE, understanding PE ratio is essential before making any investment decision.

What is PE Ratio?

The PE ratio compares a company's current stock price to its earnings per share (EPS). The formula is straightforward:

For example, if a company's stock is trading at ₹500 and its EPS over the last 12 months was ₹25, then its PE ratio would be 20. This means investors are paying ₹20 for every ₹1 of the company's earnings.

Types of PE Ratio

Trailing PE (TTM)

This uses the actual earnings from the last 12 months. It is the most commonly referenced PE ratio on platforms like NSE India, Moneycontrol and Screener.in. Since it uses real historical data, it is more reliable but may not reflect future performance.

Forward PE

This uses analyst estimates of future earnings. If a company is expected to significantly grow its profits, the forward PE may be lower than the trailing PE, suggesting the stock could be more attractive than it appears.

What is a Good PE Ratio for Indian Stocks?

There is no universal good or bad PE ratio. Context matters significantly. Here are general benchmarks for Indian markets:

Sector	Typical PE Range	Notes
FMCG (HUL, ITC, Nestle)	40-70x	Premium for stability and brand strength
IT Services (TCS, Infosys, Wipro)	15-30x	Moderate PE with strong cash flows
Banking (HDFC, ICICI, SBI)	10-20x	Lower PE due to capital intensive nature
PSU Stocks (NTPC, ONGC, Coal India)	5-15x	Typically lower PE with dividend yields
Auto (Maruti, Bajaj Auto)	15-30x	Cyclical — PE varies with economic cycles
Nifty 50 Average	20-25x	Market benchmark for large caps

How to Use PE Ratio When Analyzing NSE Stocks

1. Compare Within the Same Sector

Always compare PE ratios of companies within the same sector. Comparing TCS (IT sector, PE ~20) with ITC (FMCG, PE ~25) tells you little because they operate in completely different industries with different growth profiles and risk levels.

2. Compare Against Historical Average

A stock trading at PE 15 may seem cheap, but if its 5-year average PE is 10, it is actually expensive relative to its own history. Platforms like Screener.in show historical PE charts for all NSE listed companies.

3. Consider the Growth Rate (PEG Ratio)

A high PE stock may still be a good buy if its earnings are growing rapidly. The PEG ratio divides PE by earnings growth rate. A PEG below 1 is generally considered attractive. For example, a company with PE 30 and 35% earnings growth has a PEG of 0.86 — potentially a good buy despite the high PE.

4. Low PE Does Not Always Mean Cheap

Value traps are common in Indian markets. A company may have a low PE because its business is declining, it has poor management, regulatory issues, or operates in a sunset industry. Always combine PE analysis with other fundamentals.

PE Ratio Limitations

• Does not account for debt levels — a highly leveraged company may have a deceptively low PE
• Can be manipulated through accounting adjustments to earnings
• Not useful for companies with negative earnings (loss-making)
• Ignores growth prospects — compare with PEG ratio for growth stocks
• Different accounting standards across countries make international PE comparisons difficult

Real Examples from NSE — May 2026

To illustrate how PE ratio works in practice with current Indian market data:

• RELIANCE Industries: PE ~22 — slightly below Nifty average, attractive given diversified business in energy, retail and telecom
• TCS: PE ~17 — below IT sector average, suggesting reasonable valuation for India's largest IT company
• IRFC: PE ~18 — government-backed financing company with low PE reflecting its utility-like stable business
• ITC: PE ~19 — FMCG giant trading at significant discount to peers like HUL (PE ~50)

Key Takeaways

1. PE ratio measures how much investors pay per rupee of company earnings
2. Always compare PE within the same sector — cross-sector comparison is misleading
3. Indian market average PE for Nifty 50 is approximately 20-25x
4. Low PE does not always mean undervalued — look for quality businesses at reasonable PE
5. Use PE alongside other metrics: PB ratio, dividend yield, debt levels and growth rate