Valuing Banks & NBFCs: Interview Framework for Why Standard DCF Fails
A bank does not become “more leveraged” in the same way a steel company does when it borrows more - lending and borrowing are its operating business. That one misconception breaks many otherwise neat valuation answers: if you treat a lender like a normal company, you will double-count debt, misread interest expense, and value the wrong cash flow.
- Standard FCFF DCF fails for banks and NBFCs because debt is not just capital structure - it is raw material for earning spreads.
- Value equity directly using dividend discount, excess return or justified price-to-book, not enterprise value minus debt.
- Book value matters because lending growth is constrained by regulatory capital and credit losses hit equity directly.
- The core formula: justified P/B = (ROE - growth) / (cost of equity - growth), for a stable lender.
- Premium valuation needs two things: ROE above cost of equity and asset quality that makes that ROE believable.
- For Indian lenders, track NIM, GNPA/NNPA, credit cost, ROA, ROE, CASA or funding cost, and capital adequacy.
- The trap: never say “low P/B means cheap” without checking why the market distrusts the loan book.
The Big Picture
For a manufacturer, you value operating assets, subtract debt, and get equity. For a bank or non-bank lender, the loan book, deposits, borrowings, provisions and capital are all part of the operating machine - so the valuation lens must shift from enterprise value to equity value and book value economics.
Core Explanation: Why the Standard Model Fails
The standard corporate valuation model is usually FCFF DCF: forecast free cash flow to the firm, discount at WACC, subtract debt, and divide by shares. That logic works when debt is financing. It fails for lenders because debt, interest, working capital and regulation behave differently.
The lender value loop
A lender creates value through a repeating loop: raise funds, originate loans, earn spread and fees, absorb credit losses, retain enough capital, and grow the book again. If any link weakens - funding cost, underwriting, collections, provisioning or capital - valuation compresses quickly.
The three valuation approaches that actually fit lenders
The most sayable version is this: a lender deserves a premium to book only when it can earn ROE above its cost of equity sustainably. “Sustainably” means the ROE is not coming from under-provisioning, excessive leverage, risky wholesale funding, or one-off recoveries.
The interview formula: justified price-to-book
For a stable bank or NBFC, the simplified relationship is:
Justified P/B = (ROE - g) / (Cost of Equity - g)
Where ROE is return on equity, g is sustainable growth in book value and earnings, and cost of equity is the required return for shareholders. The formula is powerful because it links valuation directly to spread over cost of equity.
What drives premium or discount to book?
The market does not pay for reported growth alone. It pays for credible book value compounding. A lender with high loan growth but weak underwriting may deserve a lower multiple than a slower lender with cleaner assets and lower funding risk.
Key metrics to track while valuing banks and NBFCs
Use these metrics as a dashboard. The “strong” level is a practical interview rule of thumb and must always be compared with the lender’s segment - mortgages, vehicle finance, microfinance, credit cards and corporate lending have different risk-return profiles.
In 2024, RBI restrictions on Paytm Payments Bank highlighted that for financial businesses, regulatory permission is not a footnote - it can affect customer flows, revenue lines and risk perception. The strategic so what: lender valuation must include governance, compliance and licence risk alongside financial ratios.
Definitions You Should Be Able to Say Cleanly
Aswath Damodaran: “The value of an asset is the present value of the expected cash flows on that asset.”
Case Study: Cholamandalam Investment and Finance - Valuing an NBFC Beyond Loan Growth
Cholamandalam Investment and Finance shows why NBFC valuation depends on secured lending discipline, collections strength, funding access and capital compounding - not loan growth alone.
Cholamandalam Investment and Finance, part of the Murugappa Group, is a useful case because it is not a deposit-taking bank and cannot be valued lazily using the same mental model as a large private bank. Its franchise has historically been anchored in vehicle finance, supported by secured lending, branch-led customer access, collections discipline and a diversified funding base.
Situation: NBFCs operate with a structural disadvantage versus banks because they generally do not have the same low-cost CASA deposit base. That makes funding access and asset-liability management central to valuation. At the same time, vehicle finance and MSME-linked lending can generate attractive yields, but only if underwriting and collections control credit losses.
The move: Chola’s valuation story has rested on building a granular secured loan book, maintaining collection intensity, diversifying products carefully, and preserving lender confidence in its funding profile. The primary driver is disciplined secured retail and SME lending. Supporting drivers include Murugappa group credibility, branch-level origination, collections infrastructure, diversified borrowings and capital discipline.
Outcome or lesson: The market does not simply ask, “How fast is the loan book growing?” It asks, “Can this growth translate into ROE above cost of equity without a future asset-quality shock?” That is exactly why P/B for NBFCs must be read together with credit cost, provisioning, funding cost and capital adequacy.
The case takeaway: a great NBFC valuation answer separates growth quality from growth quantity. Primary driver first, supporting drivers next - that is what makes the answer sound like an investor, not a textbook.
How AI Changes Valuing Banks & Non-Bank Lenders
AI is changing lender valuation in specific ways, but it does not remove the basics: capital, credit losses and governance still decide value.
Load a lender’s annual report, latest investor presentation and one RBI sector update into NotebookLM. Ask: “Create a valuation diligence checklist covering ROE, NIM, asset quality, capital adequacy, funding risk and regulatory risk, with likely interview questions.” Then verify every number from the original documents.
Interview Relevance
“Why can’t we value a bank or NBFC using a normal FCFF DCF? How would you value it instead?”
If you remember only one line, say this: “For lenders, book value is not an accounting afterthought - it is the capital base from which regulated growth and credit losses flow.”
Common Mistake
The biggest mistake is calling a bank or NBFC “cheap” only because it trades at low P/B. Low P/B may mean the market expects weak ROE, hidden credit losses, regulatory stress or dilution. The fix: always pair P/B with ROE versus cost of equity and asset-quality metrics.
What to Revise Next
Now that you can value regulated lenders, move to businesses where the opposite problem appears: little current profit, high optionality and uncertain terminal economics.