What Is Book Value? Meaning and Formula
By Markets & Investing DeskUpdated Nov 10, 2026
Definition
Book value is a company's total assets minus total liabilities as recorded on its balance sheet, the same figure as shareholders' equity. It reflects accounting values, not market prices.
Key takeaways
- Book value per share subtracts preferred equity and divides by common shares outstanding, not shares issued.
- A single asset's book value is its original cost minus accumulated depreciation, amortization and impairments.
- A P/B ratio below 1.0 can signal an undervalued stock or doubts about whether assets are worth their carrying amounts.
- Heavy share buybacks reduce equity and can leave a profitable company with very low or negative book value.
Book value is the net value of a company’s assets as recorded on its balance sheet: total assets minus total liabilities. For a company as a whole, book value is the same figure as shareholders’ equity (also called stockholders’ equity or net worth on the books). It shows what would be left for shareholders if every asset sold for exactly its recorded amount and every obligation were paid off. Real liquidations rarely work out that neatly.
The term also has a narrower accounting meaning. The book value of a single asset is its original cost minus accumulated depreciation, amortization or impairment. Both uses come from the same idea: the value carried in the company’s books, as opposed to the price the market puts on it.
What Book Value Means
Book value is an accounting measure, not a market measure. Assets such as cash, receivables, inventory, buildings and equipment are recorded under accounting rules. Many of them are carried at historical cost adjusted for depreciation, not at what they would fetch today. Liabilities such as loans, bonds, accounts payable and lease obligations are subtracted. The remainder is the owners’ claim on the company, and that claim is the book value.
Because it is built from the balance sheet, book value describes the past and present financial position, not future earnings. A company that has earned profits for decades and kept them (retained earnings) will usually have a larger book value than a young firm of similar size. A company that pays out most of its profits or buys back stock may show a smaller one.
How Book Value Is Calculated
The company-level formula
The basic book value formula is:
Book value = Total assets − Total liabilities
Because of the accounting equation (assets = liabilities + equity), this result equals total shareholders’ equity, which the balance sheet in the company’s annual or quarterly report shows directly in the “Liabilities and Shareholders’ Equity” section. That section is built from line items such as common stock, additional paid-in capital, retained earnings, accumulated other comprehensive income (or loss) and treasury stock, which is subtracted. Some companies show other entries depending on their industry and accounting practices.
When a company has minority (noncontrolling) interests in subsidiaries, the balance sheet may show equity attributable to the parent separately. For valuing the parent’s shares, use the equity attributable to the parent company’s shareholders.
Book value per share (BVPS)
Total book value is hard to compare with a share price, so investors convert it to a per-share figure:
BVPS = (Total shareholders’ equity − Preferred equity) ÷ Common shares outstanding
Preferred equity is removed because preferred shareholders have a senior claim, so that slice of book value does not belong to common shareholders. If the company has no preferred stock, use total shareholders’ equity as reported. Use shares outstanding, not shares issued: issued shares include treasury shares the company has bought back and holds. Some reports label these figures loosely, so check the share count note.
Worked example (hypothetical)
Assume a company reports:
- Total assets: $50 million
- Total liabilities: $29 million
- Preferred stock: none
- Common shares outstanding: 2 million
Book value = $50 million − $29 million = $21 million. BVPS = $21 million ÷ 2 million = $10.50 per share.
If the stock trades at $13.17, the price-to-book ratio is $13.17 ÷ $10.50 ≈ 1.25. The market is paying about 25% more than the accounting net worth behind each share.
Now assume instead the company had $3 million of preferred stock within that $21 million of equity. Common equity falls to $18 million and BVPS to $9.00, which raises the P/B ratio at the same $13.17 price to about 1.46.
Book Value of an Asset
In accounting, the book value (or carrying value, or net book value) of an individual asset is:
Asset book value = Original cost − Accumulated depreciation (or amortization) − Impairments
Hypothetical example: a company buys a machine for $100,000, expects it to last 10 years and assumes $10,000 of salvage value. Under straight-line depreciation, the annual charge is ($100,000 − $10,000) ÷ 10 = $9,000. After four years, accumulated depreciation is $36,000 and the machine’s book value is $64,000.
That $64,000 says nothing about what a buyer would pay. If the equipment became obsolete, its resale price could be far lower. If the market for used machines tightened, it could be higher. A different depreciation method, such as an accelerated one, would produce a lower book value in the early years for the same machine.
The asset-level figure matters when a company sells an asset. Proceeds above the book value produce a recorded gain, and proceeds below it produce a loss.
Book Value of Debt
Book value also applies to liabilities. The book value of debt is the carrying amount on the balance sheet: generally the principal adjusted for any unamortized discount or premium and certain issuance costs. You find it in short-term borrowings, the current portion of long-term debt, and long-term debt, with detail in the debt note to the financial statements.
Analysts sometimes use the book value of debt as a stand-in for its market value when calculating capital structure weights. The two can differ, because bond prices move with interest rates and credit quality while the carrying amount does not adjust to those moves in the same way.
How Investors Use Book Value
The price-to-book (P/B) ratio
P/B ratio = Market price per share ÷ Book value per share
The same result comes from dividing market capitalization by total common equity. The ratio tells you how many dollars the market pays for each dollar of recorded net assets.
- P/B above 1.0: the stock trades at a premium to book. Investors are pricing in value the balance sheet does not record, such as earning power, brands or growth.
- P/B below 1.0: the market values the company at less than its recorded net assets. This may signal an undervalued stock. It may also reflect doubts about whether the assets are worth their carrying amounts, or expectations of weak future returns.
Value investors often screen for low P/B ratios combined with otherwise sound fundamentals, such as a reasonable P/E ratio.
Comparing within an industry
P/B works best when comparing similar companies that use comparable accounting for their assets. Across industries, the same ratio can mean different things. A software company whose main assets are its code and customer relationships may carry few of them on the balance sheet, so a high P/B there is not automatically a premium valuation. A company with a balance sheet full of loans or securities marked close to current value may naturally trade nearer book.
Book value and profitability
Book value is also the denominator of return on equity (ROE = net income ÷ shareholders’ equity). A company that earns a high return on its book equity can justify a higher P/B, since each dollar of book value generates more profit, so pair P/B with ROE and earnings per share (EPS).
Book Value vs. Related Measures
| Measure | What it represents | Main difference from book value |
|---|---|---|
| Market value (market cap) | Share price × shares outstanding | Set by buyers and sellers, reflects expectations |
| Tangible book value | Book value − goodwill and intangible assets | Excludes assets that may have little resale value |
| Liquidation value | Cash raised if assets were sold and debts paid | Uses realizable prices, often forced-sale discounts |
| Enterprise value | Market cap + debt − cash | Values the whole business for all capital providers |
| Asset book value | Cost − accumulated depreciation of one asset | Applies to a single asset, not the company |
Market value often exceeds book value because internally developed brands, patents, software, customer lists and staff expertise generally do not appear as assets unless acquired, and future profits are not recorded at all. Market value can fall below book value when investors expect losses, write-downs or poor returns.
Limitations of Book Value
- Historical cost. Many assets are carried at what was paid for them, less depreciation. Land bought decades ago may sit on the books far below its current worth.
- Missing intangibles. Internally created intangible assets are largely absent, which understates book value for knowledge-based businesses.
- Goodwill. When a company acquires another, it records goodwill for the premium paid over identifiable net assets. Goodwill inflates book value but cannot be sold separately, which is why analysts also look at tangible book value.
- Accounting choices. Depreciation methods, inventory methods and impairment judgments change the figure. Companies reporting under different standards, such as US GAAP and IFRS, can show different book values for similar businesses.
- Buybacks and dividends. Share repurchases reduce equity, so a profitable company with heavy buybacks can report very low or even negative book value.
- Point-in-time figure. Book value reflects the balance sheet date. Tracking it year over year shows whether equity is growing.
FAQs
Is book value a present value?
No. Book value is mostly a historical-cost measure, not a discounted present value of future cash flows. Some items, such as certain financial instruments, are measured at fair value, but book value as a whole is not an estimate of what the business is worth today.
Can book value be negative?
Yes. If total liabilities exceed total assets, shareholders' equity is negative. This can result from accumulated losses, or from debt-funded buybacks and dividends at a company that remains profitable. Negative book value alone does not mean a company is failing, but it does mean P/B cannot be used to value it.
The Bottom Line
Book value gives investors a baseline for what shareholders own on paper, and it works best when comparing similar companies with comparable accounting. Because it relies on historical cost and leaves out most internally built intangibles, it can understate some businesses and overstate others through goodwill. Pair the price-to-book ratio with return on equity and earnings per share, and check tangible book value when acquisitions are large.
