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# Book Value vs Unlisted Share Price: What's the Difference?
A common reaction from new investors looking at an unlisted share: "The book value is ₹50, but the price is ₹400 — isn't that eight times too expensive?" It's a fair question, and the answer reveals one of the most important ideas in valuation. Book value and share price measure two completely different things, and the gap between them is usually rational, not a rip-off.
Disclaimer: This article is educational and not investment advice. Valuation ratios are tools, not verdicts. Figures here are illustrative. Always do independent research and consult a SEBI-registered adviser before investing in unlisted shares.
What Is Book Value?
Book value is an accounting figure taken straight from the company's balance sheet. It's the company's net worth on paper:
Book Value = Total Assets − Total Liabilities
Divide that by the number of shares outstanding and you get book value per share — the accounting value attributable to each share.
Conceptually, book value is roughly what each share would be worth if the company:
- Sold every asset at the value recorded on its books
- Paid off every liability
- Distributed what's left to shareholders
It's a useful baseline, but it has a critical limitation: it's backward-looking and asset-based. It captures what the company has *accumulated*, not what it can *earn* in the future.
What Is Share Price?
Share price is forward-looking. It's what investors are willing to pay today for a claim on the company's future — its growth, its profits, its market position.
Investors paying ₹400 for a share with ₹50 book value aren't being irrational. They're paying for things the balance sheet barely captures:
- Brand and reputation — often not on the books at all
- Intellectual property and technology — frequently undervalued in accounting terms
- Growth potential — future revenues that don't yet exist
- Earning power — the ability to generate profit far above the asset base
A profitable, fast-growing company creates value that dwarfs its accounting net worth. That's why price almost always exceeds book value for a healthy growth business.
The Price-to-Book (P/B) Ratio
The bridge between the two numbers is the **price-to-book ratio**:
P/B Ratio = Share Price ÷ Book Value Per Share
In the example above, P/B = ₹400 ÷ ₹50 = 8x. Investors are paying eight times the accounting net worth.
Whether that's reasonable depends entirely on the type of business:
- Asset-light, high-growth companies (software, consumer internet, brands) routinely trade at high P/B ratios — sometimes 5x, 10x, or more. Their value lives in IP, network effects, and growth, not physical assets
- Asset-heavy businesses (banks, manufacturers, infrastructure) often trade closer to book value — P/B of 1x to 3x — because their value is more tied to the assets on the balance sheet
So an 8x P/B is alarming for a steel plant but unremarkable for a fast-growing tech company.
Why Price Almost Never Equals Book Value
Put simply: book value ignores the future, and the future is most of what you're buying.
- A company growing revenue 40 percent a year has enormous value not yet reflected in its assets
- A beloved consumer brand's name is worth far more than the factories that make its products
- A software firm's code and user base are barely on the balance sheet but drive nearly all its worth
Expecting price to equal book value would be like valuing a successful business at the cost of its desks and computers. For most companies worth investing in, price sits well above book value — and that's normal.
When Book Value Still Matters
Book value isn't useless — it's a floor and a sanity check:
- For asset-heavy companies, it's a meaningful reference. A bank trading below book value may signal market concern about its loan quality
- As a downside anchor, it hints at what might be recoverable in a worst case (though real liquidation rarely fetches book value)
- For comparing similar companies, P/B is a quick relative-value gauge — but only *within* a sector, never across very different business types
Is a Low P/B Good or Bad?
It depends — and this is where investors often go wrong.
A low P/B can mean:
- The share is genuinely cheap relative to solid assets (an opportunity), or
- The market doubts the quality or earning power of those assets (a warning)
A high P/B can mean:
- The price is stretched relative to fundamentals (a risk), or
- The company's growth fully justifies the premium (still attractive)
P/B alone never tells you whether to buy. It's one input, most useful compared across similar companies in the same sector, and always read alongside growth, profitability, and the path to liquidity.
The Takeaway
- Book value is the accounting net worth per share — backward-looking and asset-based
- Share price is what investors pay for the company's future — forward-looking
- The P/B ratio measures the gap, and a high P/B is normal for growth and asset-light companies
- Don't dismiss an unlisted share as "overpriced" just because it trades far above book value — and don't assume a low P/B is automatically a bargain
Understanding why the two numbers differ is what separates investors who panic at a high P/B from those who can judge whether a price is actually justified.
*Published by the Polemarch editorial team. Not investment advice — ratios are illustrative and figures are examples only.*