Valuing Banks and Insurers
Why financial companies are valued on book value and return on equity instead of cash flow, how the two connect, and which adjustments matter before trusting either number.
The short version
Free cash flow and enterprise value don't work for banks and insurers, because borrowing is their business, not a way of funding it. They're valued on their equity instead. The key relationship is between price-to-book and return on equity: a company that earns exactly what investors require is worth its book value, one that earns more is worth a premium, and one that earns less deserves a discount. That makes two numbers decisive, and both need checking. Book value has to be adjusted for goodwill, unrealized losses, and reserves that may be too thin, and the return has to be one the company can sustain through a full cycle, not the one it reports in a good year.
By the end of this lesson, you'll be able to
- Explain why financial companies are valued on equity instead of on enterprise value
- Calculate a justified price-to-book ratio from return on equity, growth, and the required return
- Adjust book value and return on equity before relying on them
Why this matters
Reading a Bank's Financial Statements and Reading an Insurer's Financial Statements showed why these companies' accounts are different. The same differences rule out the standard valuation tools. This lesson explains what replaces them. It assumes you've read those two lessons.
Why the usual tools fail
- There's no meaningful enterprise value. Enterprise value adds debt to the value of the shares, on the idea that debt is one way of financing the business. A bank's deposits and an insurer's reserves aren't financing. They're what it works with. Adding them in gives a number with no use.
- There's no meaningful free cash flow. Making a loan and buying a bond are cash outflows, and both are simply the business operating. Capital spending on buildings and equipment is trivial by comparison.
- What limits growth is capital. A bank can't lend more without more equity to support it, as the capital rules in the earlier lesson showed. So the cash that really belongs to shareholders is what can be paid out after keeping enough capital to grow.
The answer is to value the equity directly, using measures built on equity: book value and return on equity.
Price-to-book and return on equity
Book value. Another name for shareholders' equity: a company's assets minus its liabilities on the balance sheet. Glossary is shareholders' equity. For most companies it's a poor guide to worth, because their assets are recorded at old costs and their most valuable ones aren't recorded at all. A bank's assets are mostly loans and securities, which are carried close to what they're worth. So its book value is a reasonable starting estimate of what the business would be worth if it simply earned an ordinary return.
What it's actually worth depends on the return it earns on that equity, compared with what investors require.
Justified price-to-book = (return on equity − growth) ÷ (required return − growth)
The reasoning is simple. If a bank earns 10% on its equity and investors require 10%, each dollar of book value is worth a dollar. If it earns more than they require, each dollar is worth more. If it earns less, each dollar is worth less, because shareholders would do better with the money elsewhere.
| Return on equity | Justified price-to-book | Implied price-to-earnings | |
|---|---|---|---|
| Bank X | 10% | 1.00 | 10.0 |
| Bank Y | 14% | 1.67 | 11.9 |
| Bank Z | 7% | 0.50 | 7.1 |
Bank Y: (14% − 4%) ÷ (10% − 4%) = 1.67. Bank Z: (7% − 4%) ÷ (10% − 4%) = 0.50. The price-to-earnings column is price-to-book divided by return on equity. A bank trading at half its book value isn't automatically cheap. If it earns 7% when investors need 10%, half of book is what it's worth.
This turns a valuation into two questions: what's the real book value, and what return can the company sustain? Both reported figures need work.
The rest of this lesson is for members
Still to come in this lesson: Checking book value, Checking the return, Dividends and buybacks, Insurers, Putting it together, the key takeaways, and 2 quiz questions with explanations.
Membership opens every lesson in the curriculum, the capstone projects, the interactive tools, and the members-only channels in the Hyperion Entities Discord. The first lesson of every module stays free.
Go deeper
- Valuing REITsValuation and Modeling (depth track)
- Reading a Bank's Financial StatementsFinancial Statement Analysis in Depth (depth track)
- Reading an Insurer's Financial StatementsFinancial Statement Analysis in Depth (depth track)
- Other Multiples: P/S, P/B, and EV/EBITDAPart 4: Research and Valuation
Notes and sources
- Internal Revenue Service. Publication 542, Corporations. Checked 2026-10-11.