PB Ratio in Indian Markets: SBI, HDFC Bank and PSU Examples

What the PB Ratio Actually Measures

The Price to Book ratio answers one blunt question. If the company stopped operating today, sold nothing extra and simply settled its books, how much does the market pay for each rupee of net worth that shareholders own? You calculate it as market price per share divided by book value per share. Book value per share is the company's total shareholder equity, which is share capital plus reserves and surplus, divided by the number of shares outstanding. Equity itself is total assets minus total liabilities, so book value is the accounting net worth that belongs to ordinary shareholders after every lender has been paid.

A PB of 1 means you are paying exactly the accounting net worth. A PB of 3 means you are paying three rupees for every rupee of net worth, betting the company will earn far more than its book suggests. A PB below 1 means the market thinks the stated net worth is either overstated or unable to generate adequate returns. This is why PB is read very differently for a profitable private bank versus a troubled PSU lender, even when both quote near the same number.

PB shines for banks, NBFCs, insurers and capital heavy businesses because their balance sheets are mostly financial assets that are marked close to fair value. It is far weaker for software firms, consumer brands and pharma, where the real value is in code, brand equity, patents and people. Indian accounting standards make companies expense most of that spending rather than capitalise it, so book value badly understates the worth of an Infosys or a Nestle India. That is exactly why those stocks routinely trade at very high PB multiples that look alarming but are not.

How to Calculate Book Value Per Share, Step by Step

Book value per share is the foundation, so get it right before touching the ratio. Open the company's latest audited balance sheet. Find total equity, which is usually labelled as the sum of equity share capital and other equity, also called reserves and surplus. Then find the number of equity shares outstanding, which you compute as total share capital divided by face value, or simply read off the shareholding pattern.

• Take total shareholder equity from the balance sheet. This is share capital plus reserves and surplus, sometimes shown as net worth.
• Subtract any preference share capital and minority interest, since those do not belong to ordinary equity holders.
• Divide the result by the number of equity shares outstanding to get book value per share.
• Divide the current market price by that book value per share. The answer is your PB ratio.

Worked Example One: State Bank of India, a Real PSU Bank

Take State Bank of India, the largest public sector bank on the NSE. The numbers below are illustrative and rounded to recent FY25 reported figures, so always confirm the exact values from SBI's filed annual report before you act. SBI reported total shareholder equity, that is net worth excluding minority interest, of roughly Rs 4,20,000 crore. Its number of equity shares outstanding is about 892.5 crore shares of face value Re 1 each.

Book value per share works out to total equity divided by shares, which is Rs 4,20,000 crore divided by 892.5 crore shares, giving roughly Rs 471 per share. Suppose the SBI share is trading at Rs 760 on the NSE. The PB ratio is 760 divided by 471, which is about 1.61. That tells you the market is paying just over one and a half times SBI's accounting net worth.

Is 1.6 times cheap or expensive? On its own you cannot say. SBI has been posting Return on Equity in the region of 16 to 18 percent in recent strong years, and its gross NPA ratio has fallen sharply from the stressed levels of 2018. A bank earning a high teens ROE with falling bad loans can comfortably justify a PB above 1.5. Compare that with a weaker PSU bank quoting 0.8 times book but earning only single digit ROE with higher NPAs. The lower PB there is not a bargain, it is the market correctly pricing weak profitability.

Worked Example Two: HDFC Bank, a Quality Private Bank

Now contrast SBI with HDFC Bank, the largest private sector bank on the NSE. Again these figures are illustrative and rounded to recent reported data, so verify against the official filing. After its merger with HDFC Limited, HDFC Bank reported consolidated net worth in the region of Rs 4,40,000 crore, with roughly 765 crore equity shares of face value Re 1 outstanding. That gives a book value per share of about Rs 575.

If HDFC Bank trades around Rs 1,550 on the NSE, the PB ratio is 1,550 divided by 575, which is about 2.70. So HDFC Bank commands almost 2.7 times book while SBI commands 1.6 times. The market is not being irrational. HDFC Bank has historically delivered consistently high ROE, low and stable NPAs, and steady deposit and loan growth. Investors pay up for that predictability. The gap between a 2.7 PB and a 1.6 PB is essentially the market pricing the difference in quality, consistency and trust between a top private lender and a state owned giant.

Comparing PB Across Real Indian Stocks

The table below shows illustrative, recent style PB levels for well known NSE names across different sectors. The exact numbers move daily, so treat these as a teaching snapshot rather than live quotes. The pattern is what matters. Financials and PSUs cluster at low single digit PB, while asset light franchises and high growth consumer names sit far higher.

Read the table the right way. You would never conclude that TCS at 13 times book is more expensive than Bank of Baroda at 1 time book. They are different animals. Comparing PB only makes sense within the same industry. SBI versus Bank of Baroda is a fair fight. SBI versus TCS is a category error.

Why Banks and PSUs Are the Natural Home of PB

For most Indian retail investors, the single most useful place to apply PB is the banking sector. A bank is essentially a portfolio of loans and deposits, so its balance sheet items already sit close to their economic value. That makes book value a meaningful anchor. The Earnings ratio, or PE, can be distorted for banks because a single year of heavy provisioning for bad loans can crush profits and make PE look absurd, while book value barely moves. PB smooths over that noise.

PSU banks like SBI, Bank of Baroda, Punjab National Bank and Canara Bank are particularly PB driven stories. Through the bad loan cycle that peaked around 2018, many traded well below 1 time book because the market feared their stated net worth was inflated by loans that would never be recovered. As the asset quality review cleaned up books and provisioning normalised, several of these names re rated from below book towards and beyond 1 time book. Investors who understood the link between falling net NPAs, recovering ROE and rising PB caught a large re rating.

• For any bank, always read PB alongside gross NPA, net NPA and provision coverage ratio. Low PB with high NPAs is a trap, not a bargain.
• A PSU bank moving from below 1 time book towards 1.2 to 1.5 times as ROE recovers is a classic Indian re rating pattern.
• Private banks like HDFC Bank, ICICI Bank and Kotak Mahindra Bank carry structurally higher PB because of stronger, steadier ROE.
• NBFCs and housing finance companies are read the same way as banks, with PB anchored to ROE and asset quality.

PB Versus PE: When Each One Earns Its Keep

PB and the Price to Earnings ratio answer different questions. PB asks what you pay per rupee of net worth. PE asks what you pay per rupee of annual profit. For asset heavy and financial businesses with lumpy or provision hit earnings, PB is steadier and more reliable. For growth businesses where the whole point is future earnings, PE and forward looking measures matter more, and PB is close to useless.

The professional habit is to use both. For a bank, lead with PB but sanity check with PE and ROE. For a software or consumer company, lead with PE or PEG and treat a high PB as expected rather than alarming. A common beginner mistake in India is to call TCS overvalued because its PB is in the teens, when in reality book value simply does not capture what TCS is worth.

How Indian Taxes Affect Your PB Based Trade

PB tells you whether a stock looks cheap, but your actual take home return depends on holding period and tax. Under current Indian rules, listed equity held for twelve months or less is taxed as short term capital gain at 20 percent. Equity held longer than twelve months is long term, taxed at 12.5 percent on gains above the Rs 1.25 lakh exemption per financial year. Securities Transaction Tax, or STT, also applies on both buy and sell of delivery equity at 0.1 percent on each side.

Here is an illustrative delivery example, not a guaranteed return. Suppose you spot Bank of Baroda near 1 time book, buy 1,000 shares at Rs 240 for a cost of Rs 2,40,000, and sell eighteen months later at Rs 300 for Rs 3,00,000 as the bank re rates. Your gross gain is Rs 60,000. STT on buy is about Rs 240 and on sell about Rs 300, roughly Rs 540 total, plus small brokerage and exchange charges. Since the holding crossed twelve months, the gain is long term. The whole Rs 60,000 sits under the Rs 1.25 lakh exemption if you have no other long term gains that year, so your capital gains tax can be zero. Hold the same trade under twelve months and the gain becomes short term, taxed at 20 percent, costing roughly Rs 12,000.

Common Mistakes Indian Investors Make With PB

The first and biggest mistake is treating a low PB as automatic cheapness. A PSU bank at 0.7 times book may be priced there precisely because its loan book is rotten or its ROE is stuck in single digits. The market is usually not stupid. A low PB is a question to investigate, not an answer to buy.

The second mistake is applying PB to the wrong businesses. Judging TCS, Infosys, Nestle India or HUL by PB will always make them look wildly overpriced, because their balance sheets do not hold the brands, code and patents that drive their real worth. The third mistake is ignoring buybacks, fresh share issues and goodwill from mergers, all of which distort book value per share. HDFC Bank's book changed materially after the HDFC Limited merger added goodwill and reshaped equity, so a clean historical PB comparison needs care.

• Do not buy a bank just because PB is below 1. Check net NPAs, provision coverage and ROE first.
• Do not apply PB to asset light IT, FMCG or pharma names. Use PE and growth measures instead.
• Watch for goodwill from acquisitions, which inflates book value without adding tangible worth.
• Compare PB only within the same sector, ideally against the same company's own five year history.

A Practical Checklist for Using PB on Indian Stocks

Turn PB into a repeatable process rather than a single number you glance at. Start with the sector. If it is a bank, NBFC, insurer or heavy asset business, PB is worth your time. If it is software, branded consumer or pharma, set PB aside and lead with earnings based measures. Then pull the latest audited equity and share count to compute book value per share yourself, rather than trusting a screener blindly.

• Confirm the sector suits PB. Financials and capital heavy firms yes, asset light firms no.
• Compute book value per share from the latest filed balance sheet, adjusting for net NPAs if it is a bank.
• Calculate PB and compare it to the same company's own five year range and to direct sector peers.
• Cross check with ROE. High PB needs high ROE to be justified.
• Decide holding period with tax in mind, since long term equity gains above Rs 1.25 lakh are taxed at 12.5 percent versus 20 percent short term.

Used this way, PB becomes a sharp tool for the part of the Indian market where it works best, which is banks and PSUs. It will not value an Infosys for you, and it will not save you from a value trap on its own. But paired with ROE and asset quality, it is one of the most reliable lenses for spotting when a quality financial stock is genuinely cheap.

Sources and Further Reading

For authoritative data and further reading, refer to the company filings and exchange disclosures on NSE India, the valuation lessons on Zerodha Varsity and the concept explainers on Investopedia. All stock figures above are illustrative and rounded. Always confirm the exact book value, share count and current price from the official annual report and live exchange quote before you trade. See also our notes on PE Ratio, book value and intrinsic value.

Sources and Further Reading

For authoritative data and further reading on this topic, refer to NSE India, Zerodha Varsity and Investopedia. Always confirm current rules, rates and contract specifications on the official source before you trade.