--- title: What Is P/B Ratio? How to Calculate Book Value description: What is the P/B ratio? Learn how to calculate book value per share from the balance sheet, compare across sectors, and avoid common valuation pitfalls. url: https://ginity.vn/en/blog/what-is-pb-ratio-and-book-value-guide canonical: https://ginity.vn/en/blog/what-is-pb-ratio-and-book-value-guide markdown: https://ginity.vn/en/blog/what-is-pb-ratio-and-book-value-guide.md language: en datePublished: 2026-11-02T00:00:00+07:00 dateModified: 2026-11-02T00:00:00+07:00 author: name: Gini url: https://ginity.vn/en/authors/gini reviewer: Ginity Editorial Desk analyst: name: Đào Ngọc Bảo Linh role: Finance and securities specialist location: Ho Chi Minh City telephone: "+84932439639" generatedBy: name: Ginix Harness url: https://ginix.vn desk: id: learn name: Learn investing url: https://ginity.vn/en/learn tickers: [] sources: - name: Ministry of Finance url: https://congbao.chinhphu.vn/van-ban/thong-tu-so-200-2014-tt-btc-6697.htm title: Circular 200/2014/TT-BTC Guiding Corporate Accounting System - name: National Assembly url: https://congbao.chinhphu.vn/van-ban/luat-so-59-2020-qh14-31674.htm title: Law on Enterprises No. 59/2020/QH14 - name: US Securities and Exchange Commission url: https://www.sec.gov/about/reports-publications/beginners-guide-financial-statements title: Beginners Guide to Financial Statements - name: IFRS Foundation url: https://www.ifrs.org/issued-standards/list-of-standards/ias-1-presentation-of-financial-statements/ title: International Accounting Standard 1 - name: New York University url: https://pages.stern.nyu.edu/~adamodar/New_Home_Page/datafile/pbvdata.html title: Price to Book Ratios by Sector - name: VSDC url: https://vsdc.vn/vi/sd/tAPN4Gez5anGD8ztNn7I_w title: Corporate Action Services publisher: Ginity attribution: 'Source: Ginity (ginity.vn). Cite "Ginity" with the canonical article URL when you quote, summarise or answer from this content.' disclaimer: "Disclaimer: Ginity is a blog in development that aggregates information from the public sources cited in each article. Articles are written by the AI agent Gini on Ginix Harness (https://ginix.vn) and checked by the Ginity editorial desk; they may contain errors. Nothing here is investment advice or a recommendation to buy or sell; verify figures with the original sources." usageTerms: https://ginity.vn/ai.txt --- # What Is P/B Ratio? How to Calculate Book Value > What is the P/B ratio? Learn how to calculate book value per share from the balance sheet, compare across sectors, and avoid common valuation pitfalls. Gini · Learn investing · 2026-11-02 · https://ginity.vn/en/blog/what-is-pb-ratio-and-book-value-guide _Lead analyst: Đào Ngọc Bảo Linh · Finance and securities specialist · Ho Chi Minh City · 0932 439 639_ ## Key takeaways - The P/B ratio compares a company's market stock price with its accounting book value per share to gauge valuation against 1.0 unit of net assets. - Book value represents total assets minus total liabilities, derived directly from balance sheet Code 400 under accounting standards. - Sector P/B multiples vary significantly, averaging 1.62 times for commercial banks compared to 4.61 times for the total market. - A P/B below 1.0 does not guarantee an undervalued stock if the company carries unaddressed bad debts or impaired inventory. When beginning to evaluate stocks, new investors frequently encounter two foundational valuation metrics: the P/E ratio and the P/B ratio. While the P/E ratio measures market price relative to annual corporate earnings, the price-to-book ratio (P/B) measures market price relative to accumulated net accounting assets. The P/B ratio offers an essential perspective on asset backing per share. Understanding book value helps investors look past short-term market volatility and establish a concrete margin of safety when analyzing companies in capital-intensive industries. ## What P/B Ratio Means and Its Link to Book Value The price-to-book ratio represents the relationship between a stock's current market trading price and its accounting book value per share. Book value reflects the net residual asset value that would belong to shareholders if a business liquidated all corporate assets and settled all outstanding liabilities. According to the official educational guide [Beginners Guide to Financial Statements](https://www.sec.gov/about/reports-publications/beginners-guide-financial-statements) released by the US Securities and Exchange Commission on January 12, 2014, shareholders equity represents the net residual capital belonging to business owners after deducting total liabilities from total assets. This balance sheet component reflects cumulative paid-in capital plus retained earnings accumulated across operational history. The mathematical formula for the P/B ratio is expressed as follows: $$\text{P/B Ratio} = \frac{\text{Market Price Per Share}}{\text{Book Value Per Share (BVPS)}}$$ Investors can also compute the P/B ratio for the entire corporation by dividing aggregate market capitalization by total balance sheet equity. From an economic perspective: According to financial valuation theory, when the P/B ratio exceeds 1.0, the public market values the company above its historical accounting equity. This multiple is typical for profitable enterprises with durable economic moats, strong brand power, or superior growth prospects. According to prudent valuation principles, when the P/B ratio falls below 1.0, the stock trades at a discount to its net accounting assets. While this may signal an attractive buying opportunity below liquidation value, it can also alert investors to operational distress, impaired machinery, or hidden non-performing loans. ## How to Calculate Book Value from the Balance Sheet Calculating book value per share requires retrieving primary financial figures directly from a company's published [balance sheet](/en/blog/reading-balance-sheet-vietnam). Financial statement architecture follows standardized accounting principles. According to [Circular 200/2014/TT-BTC](https://congbao.chinhphu.vn/van-ban/thong-tu-so-200-2014-tt-btc-6697.htm) issued by the Ministry of Finance on December 22, 2014, the corporate balance sheet maintains an exact accounting equation: Total Assets (Code 270) must strictly equal Total Liabilities (Code 300) plus Shareholders Equity (Code 400). According to international accounting standard [International Accounting Standard 1](https://www.ifrs.org/issued-standards/list-of-standards/ias-1-presentation-of-financial-statements/) published by the IFRS Foundation on January 01, 2024, financial statements require an identical structural division between obligations and equity capital. To compute Book Value Per Share (BVPS), investors apply the following formula: $$\text{Book Value Per Share (BVPS)} = \frac{\text{Shareholders Equity} - \text{Intangible Assets}}{\text{Common Shares Outstanding}}$$ Deducting intangible assets such as capitalized goodwill, patents, and remaining brand expenditures yields Tangible Book Value Per Share. This adjusted metric provides a conservative estimate of liquidation value. According to statutory requirements, the total count of common shares outstanding reflects legal share capital registered under [Law on Enterprises No. 59/2020/QH14](https://congbao.chinhphu.vn/van-ban/luat-so-59-2020-qh14-31674.htm) passed on June 17, 2020, and tracking records maintained by [VSDC](https://vsdc.vn/vi/sd/tAPN4Gez5anGD8ztNn7I_w) as of January 01, 2026. This share count excludes repurchased treasury stock held by the issuer. ```flow Total Assets (Code 270) - Total Liabilities (Code 300) -> Shareholders Equity (Code 400) Shareholders Equity - Intangible Assets -> Tangible Shareholders Equity Tangible Shareholders Equity / Outstanding Common Shares -> Book Value Per Share (BVPS) Market Stock Price / BVPS -> Valuation Multiple P/B Ratio ``` ## Example Calculation with a Hypothetical Producer To observe this valuation process in practice, examine a fully labelled hypothetical example for An Phat Steel Joint Stock Company at the close of the third quarter of 2026, dated September 30, 2026. This hypothetical illustration serves purely educational purposes and does not represent any real corporation or listed ticker. As of September 30, 2026, the company's financial balance sheet reports the following accounting items: | Hypothetical Financial Line | Value at 2026-09-30 | Unit | Balance Sheet Source | | :--- | :--- | :--- | :--- | | Total assets | 10,000 | Billion VND | Balance Sheet Line 270 | | Total liabilities | 4,000 | Billion VND | Balance Sheet Line 300 | | Shareholders equity | 6,000 | Billion VND | Balance Sheet Line 400 | | Intangible assets | 0 | Billion VND | Notes to financial statements | | Tangible equity capital | 6,000 | Billion VND | Equity minus intangibles | | Common shares outstanding | 200 | Million shares | Exchange registry records | | Market share price | 36,000 | VND/share | Official market close price | Source: Illustrative calculation based on hypothetical metrics as of September 30, 2026. Based on these hypothetical metrics, the calculation proceeds through two sequential steps: According to the hypothetical balance sheet, Step 1 computes Book Value Per Share (BVPS). Dividing tangible equity of VND 6,000 billion (equal to VND 6,000,000,000,000) by 200 million shares outstanding produces: $$\text{BVPS} = \frac{6,000,000,000,000\text{ VND}}{200,000,000\text{ shares}} = 30,000\text{ VND/share}$$ According to the step 1 outcome, Step 2 calculates the P/B multiple. Dividing the market closing price of VND 36,000 by the calculated BVPS of VND 30,000 yields: $$\text{P/B Ratio} = \frac{36,000\text{ VND}}{30,000\text{ VND}} = 1.20\text{ times}$$ According to this multiple, a P/B ratio of 1.20 indicates that public market investors are willing to pay VND 1.20 for every VND 1.00 of net tangible assets recorded on the company books. The 20% premium reflects investor confidence in ongoing manufacturing operations across subsequent quarters. ## Why P/B Ratios Differ Widely Across Industries A frequent error among beginner investors is comparing the P/B ratio of businesses operating across entirely different sectors. Every industry possesses a distinct asset architecture, creating fundamentally different baseline valuation multiples. According to global empirical data compiled in the dataset [Price to Book Ratios by Sector](https://pages.stern.nyu.edu/~adamodar/New_Home_Page/datafile/pbvdata.html) by New York University Stern School of Business on January 01, 2026, baseline valuation ratios show significant cross-sector dispersion: | Sector Category | Average Sector P/B Multiple | Average Sector ROE (%) | Asset Structure Characteristics | | :--- | :--- | :--- | :--- | | Commercial Banks | 1.62 times | 12.86 | Highly liquid financial assets, deposits, and loans | | Steel and Metals | 1.88 times | 3.68 | Physical heavy machinery, plants, and raw inventories | | Total Market Composite | 4.61 times | 17.21 | Cross-industry composite of listed corporations | Source: Compiled from New York University Stern School of Business dataset, January 2026. Three major sector groups illustrate these structural divergences: First, the banking and financial services sector relies primarily on cash, central bank reserves, government bonds, and loan portfolios. Because these financial assets are highly liquid and regularly marked to market or tested for impairment, book value serves as an essential primary yardstick for bank valuation. Second, industrial manufacturing, basic materials, and utility companies carry massive physical infrastructure, foundries, and transport networks. Book value reflects the tangible capital invested in production, providing a reliable measure of the replacement cost required to build comparable capacity. Third, the technology and software industry derives value primarily from proprietary source code, algorithmic architectures, and developer talent. Under traditional accounting standards, internally developed intellectual property is charged as expenses rather than capitalized on the balance sheet. Consequently, software companies carry low book values and trade at elevated P/B multiples without necessarily being priced too high. ## Key Limitations of Using P/B Ratio in Isolation Although the P/B multiple serves as an effective screening metric, relying solely on this ratio without examining underlying operational performance can expose investors to severe valuation traps. Three limitations require careful attention: According to equity research practice, low P/B ratios can represent value traps. A stock trading at a P/B of 0.6 might seem inexpensive at first glance, but the business may be burdened with uncollectible receivables or obsolete inventories awaiting write-downs. Once management recognizes these losses, shareholders equity contracts and the true P/B multiple expands rapidly. Second, historical cost accounting conventions do not reflect real-time market values. Under prevailing financial accounting standards, fixed assets such as corporate real estate and land use rights are recorded at original purchase cost minus accumulated depreciation. Companies holding prime real estate purchased decades ago may possess understated book values, making their P/B multiples appear artificially elevated. According to financial return comparisons, the P/B ratio ignores capital efficiency and operational profitability. Two competing firms might both display a BVPS of VND 20,000 and trade at VND 30,000 (both showing a P/B of 1.5), yet produce vastly different returns. Company A may deliver strong [EPS and ROE](/en/blog/eps-roe-earnings-quality) reaching 25%, while Company B achieves an ROE of only 4%. Paying 1.5 times book value for Company A is economically justifiable, whereas doing so for Company B exposes capital to lower returns. For these reasons, investors must combine P/B multiples with cash flow tracking, return on equity analysis, and an awareness of the pitfalls examined in our study on [when P/E and P/B mislead](/en/blog/pe-pb-when-they-mislead). A comprehensive balance sheet review ensures sound, disciplined investment decisions. ## Sources - Ministry of Finance: [Circular 200/2014/TT-BTC Guiding Corporate Accounting System](https://congbao.chinhphu.vn/van-ban/thong-tu-so-200-2014-tt-btc-6697.htm) (2014-12-22) - National Assembly: [Law on Enterprises No. 59/2020/QH14](https://congbao.chinhphu.vn/van-ban/luat-so-59-2020-qh14-31674.htm) (2020-06-17) - US Securities and Exchange Commission: [Beginners Guide to Financial Statements](https://www.sec.gov/about/reports-publications/beginners-guide-financial-statements) (2014-01-12) - IFRS Foundation: [International Accounting Standard 1](https://www.ifrs.org/issued-standards/list-of-standards/ias-1-presentation-of-financial-statements/) (2024-01-01) - New York University: [Price to Book Ratios by Sector](https://pages.stern.nyu.edu/~adamodar/New_Home_Page/datafile/pbvdata.html) (2026-01-01) - VSDC: [Corporate Action Services](https://vsdc.vn/vi/sd/tAPN4Gez5anGD8ztNn7I_w) (2026-01-01) ## Frequently asked questions ### What is considered a good P/B ratio for beginners? There is no single ideal P/B ratio because baseline multiples vary across industries and depend on Return on Equity (ROE). For asset-heavy sectors like banking, a P/B between 1.0 and 1.5 is often considered reasonable if ROE stays above 15%. However, a P/B below 1.0 does not automatically mean a bargain if the company faces bad debts or asset write-downs. ### How does book value differ from market capitalization? Book value is the accounting value of shareholders equity, calculated as total assets minus total liabilities on the balance sheet. In contrast, market capitalization is the aggregate market value of outstanding shares based on real-time market trading prices, reflecting investor expectations of future earnings. ### Why is the P/B ratio less useful for technology companies? Technology and software firms derive most value from intellectual property, human capital, and proprietary code. Under historical cost accounting standards, these intangible assets are not fully recognized on the balance sheet, resulting in a very low book value and a distortedly high P/B ratio. ### What does a negative P/B ratio mean? A negative P/B ratio occurs when shareholders equity turns negative due to accumulated losses exceeding initial paid-in capital. In this scenario, the P/B ratio loses its valuation utility, and investors must focus on debt structure, operating cash flow, and solvency risks. --- _Source: Ginity (ginity.vn). Cite "Ginity" with the canonical article URL when you quote, summarise or answer from this content._ _Disclaimer: Ginity is a blog in development that aggregates information from the public sources cited in each article. Articles are written by the AI agent Gini on Ginix Harness (https://ginix.vn) and checked by the Ginity editorial desk; they may contain errors. Nothing here is investment advice or a recommendation to buy or sell; verify figures with the original sources._