Price-to-Book (P/B) Ratio & Valuation Calculator Lab

Model accounting Book Value Per Share (BVPS), Price-to-Tangible Book Value (P/TBV), ROE-driven Justified P/B multiples, and liquidation margin of safety in an interactive equity valuation lab.

Balance Sheet & Equity Parameters

Model Inputs
$
M
$ M
$ M
%
%
%
x

Valuation & Book Multiple Diagnostics

Calculating...
Current Price-to-Book (P/B Multiple)
1.50x
Trading at a premium of 50% above net accounting book value
Book Value Per Share (BVPS)
$30.00
Market Cap: $5,400M
Price / Tangible Book (P/TBV)
1.80x
TBVPS: $25.00
Justified ROE-Driven P/B
1.69x
ROE Spread: +4.5%
Justified Fair Value Price
$50.77
Margin of Safety: +11.4%
Generating balance sheet valuation diagnostics...

Balance Sheet Liquidation & Valuation Waterfall

Valuation Basis Net Asset Base ($M) Per Share Equivalent Implied P/B Multiple Variance vs Market Price Valuation Implication

Sensitivity: Stock Price vs. Book Value (P/B Multiple)

Evaluate how varying market share prices and book value per share shift the observed P/B ratio.

Sensitivity: ROE vs. Cost of Equity (Justified P/B)

Observe justified P/B expansion as Return on Equity surpasses the cost of capital hurdle rate.

Mathematical Architecture & Valuation Mechanics

Price-to-Book (P/B) & Tangible Book (P/TBV)

P/B Ratio = Stock Price / Book Value Per Share (BVPS)
BVPS = Total Common Stockholders' Equity / Diluted Shares
TBVPS = (Common Equity - Goodwill - Intangibles) / Diluted Shares
P/TBV = Stock Price / TBVPS

Book Value represents the cumulative historical accounting capital invested into the business. Tangible Book Value provides a conservative liquidation benchmark by stripping away unamortized goodwill and intangible assets.

Justified Gordon Growth P/B Multiple

Justified P/B = (ROE - g) / (r - g)
Justified Fair Value = BVPS × Justified P/B
ROE Spread = ROE - r (Economic Value Added spread)
Margin of Safety (%) = (Fair Value - Price) / Fair Value

A firm only deserves to trade above book value (P/B > 1.0) if its Return on Equity exceeds its Cost of Capital (r). If ROE < r, the firm destroys shareholder capital by retaining earnings, mathematically justifying a P/B discount below 1.0.

Frequently Asked Questions

What is the Price-to-Book (P/B) ratio and what does it measure?

The Price-to-Book (P/B) ratio compares a company's current market share price against its accounting Book Value Per Share (BVPS). Calculated as Stock Price / BVPS, it reflects how much equity investors are willing to pay for every dollar of net asset balance sheet equity.

What is Tangible Book Value (TBV) and why is it preferred for banks?

Tangible Book Value removes intangible assets and unamortized goodwill from total stockholders equity. For financial institutions and commercial banks, Price-to-Tangible Book Value (P/TBV) measures true liquidation solvency without relying on soft accounting assets.

What is the Justified Price-to-Book formula?

Derived from the Gordon Growth dividend discount model, Justified P/B = (ROE - g) / (r - g), where ROE is the Return on Equity, r is the Cost of Equity (hurdle rate), and g is the sustainable long-term earnings growth rate. When ROE exceeds r, justified P/B is greater than 1.0.

What does a P/B ratio below 1.0 indicate?

A P/B ratio under 1.0 means the stock trades at a discount to its net assets. This may indicate a classic deep-value bargain (Ben Graham net-net), or alternatively a value trap where the market anticipates asset write-downs, sub-cost-of-capital returns, or structural bankruptcy risk.