Book Value
Book value is the net value of a company's assets as recorded in its financial statements, calculated as total assets minus total liabilities. Book value per share represents the accounting value of each share and serves as a foundational metric in fundamental analysis.
Book value represents the theoretical value of a company if all its assets were liquidated at their accounting (book) value and all liabilities were paid off. It is derived directly from the balance sheet: total assets minus total liabilities equals shareholders' equity (or net worth), which is the book value of the company as a whole. Dividing this by the total number of outstanding shares gives the book value per share (BVPS). This figure answers: what is each share worth based purely on the company's balance sheet?
In the Indian banking sector, book value has special significance. Banks are often valued on a Price-to-Book (P/B) multiple rather than the Price-to-Earnings (P/E) ratio, because a bank's assets are primarily financial instruments (loans, bonds) whose book values are closely tied to their market values. During the NPA (Non-Performing Asset) crisis that plagued Indian public sector banks between 2015–2018, book values were directly impacted as bad loan write-offs reduced net assets. HDFC Bank, with its consistent asset quality, historically traded at 3–5x book value, while struggling PSU banks traded below 1x book value reflecting the market's scepticism about the accuracy of their stated asset values.
For retail investors, book value is most useful as a sanity check rather than a standalone valuation tool. A company trading significantly below its book value may signal undervaluation or it may signal that assets on the books are impaired and the true realisation value is far lower. Conversely, a company like an asset-light software firm (where intangible assets like brand value and human capital are not on the balance sheet) may trade at 10–20x book value without being overvalued by market standards.
One important caveat is that book value is a historical, accounting-based figure. It does not capture future earnings potential, brand value, patents, or the quality of management — all of which significantly influence what investors are willing to pay for a share. Inflation also distorts book value over time: a factory built decades ago at a historical cost may be worth far more at today's prices but will appear undervalued on the balance sheet. This is one reason why companies with significant 'old' physical assets may trade at premiums to their stated book value.