Four times book. Four times what?

What sits underneath P/B

Book value of equity is the accounting value left for ordinary shareholders after recognised liabilities are subtracted from recognised assets. Bharat Foods has ₹125 crore of net worth across one crore shares, so book value is ₹125 a share.

At a market price of ₹500, price-to-book is ₹500 ÷ ₹125 = 4.0×. The whole-company calculation agrees: ₹500 crore of equity market value ÷ ₹125 crore of accounting equity = 4.0×.

Book value is not ₹125 of cash waiting behind each share. It is not the guaranteed sale value of the company's assets, the cost of rebuilding the business or a liquidation promise. It is an accounting residual shaped by original costs, depreciation, provisions, write-downs and what accounting rules recognise.

Pair the book with the return it earns

A rupee of book value deserves no fixed market price. What matters is the return the business can earn on that equity and whether the return can last. In the chapter's simplified snapshot, Bharat Foods earns ₹25 crore on ₹125 crore of net worth: 20% return on equity, or ROE.

A business that can sustainably earn well above the return investors require may justify a premium to book. One that earns weak returns, takes excessive risk or repeatedly writes assets down may deserve less. P/B supplies the price; sustainable ROE helps explain what the priced book can produce.

The ratios connect when their periods and definitions match: P/B = P/E × ROE. Bharat Foods gives 20 × 20% = 4.0. This identity does not value the share; it exposes why a P/B comparison without ROE has omitted the earning power of the book.

Use care with a single year's ROE. Leverage can lift it, a one-off gain can flatter it, and a shrinking equity base can raise it without improving the operation. Formal analysis commonly uses average equity through the period; this lesson keeps Bharat Foods' fixed ₹125 crore snapshot for transparent arithmetic.

Where book value carries useful information

P/B is especially relevant for banks and NBFCs, where financial assets, liabilities and equity capital are central to the business. Their book equity helps support the lending operation, and ROE links that equity to what shareholders presently earn from it.

The ratio still needs a quality check. For a lender, ask about non-performing assets, credit costs, provisions, capital adequacy and underwriting. An overstated loan book or inadequate provision can make both book value and today's ROE look stronger than the economics beneath them.

P/B can also help with asset-heavy businesses when recorded assets are meaningful and accounting is comparable. It is weaker where brands, software, research, networks or human skill create much of the value but are absent from book, or where old assets sit at costs far removed from current economics.

Bharat Foods makes the arithmetic clear, but accounting net worth can omit economically important intangibles in a food business. P/B is therefore a cross-check here, not automatically the best primary multiple.

Below book is a question, not a bargain

A P/B below 1 means the equity market value is below stated accounting equity. It can signal pessimism about future ROE, expected loan or asset losses, weak governance, trapped capital or doubts about whether book value is recoverable. The discount does not itself prove undervaluation.

If book value is negative, ordinary P/B is not meaningful. If two companies follow different provisioning or asset-recognition practices, their ratios may not be comparable even when the labels match.

Read the movement in both halves. A lower P/B can come from a falling price, a larger book denominator, or both. Book can grow because retained profit built equity; it can also shrink after losses, write-downs, dividends or buybacks. Explain the change before interpreting the ratio.