A long read · 12 chapters · thirteen artifacts to break
What is corporate finance?
Ask ten people what finance is and nine will describe the stock market — the spectator sport, not the game. This long read is the game: Prof. Tantri's corporate finance course rebuilt as an essay you can play with. The same examples, the same numbers, the same traps he sets in class — and thirteen artifacts to break with your own hands. By the end you will know what a CFO actually decides all day, which, conveniently, is the stuff you can't just Google.
Two years ago I was 24 and confidently naive. A marketing guy. I could tell you why an ad works; I could not tell you where my own salary should sit. Personal finance — nothing. Corporate finance — a phrase other people used at placements.
Then this course happened to me. Somewhere between opportunity cost and the IRR trap, business stopped looking like logos and campaigns and started looking like what it is: a machine for turning today's money into more money tomorrow. Marketing, ops, hiring — every function rolls up to one KPI, and the KPI is money. Finance is the science of that KPI. Macro is the art around it — the weather the machine runs in. Once I saw that, I couldn't stop looking, and this site is me making sure you don't need my luck to see it too.
In October 2024, mid-term, the professor told the group what he was working on: "The current obsession is a simple and intuitive book on basics of corporate finance. That's all." A month after the course ended, he started posting: "I am starting this series — 50 key takeaways from corporate finance. (There is nothing called FCRV. Please forget it.) My hope is that these will be useful in your future decision-making." Some of those messages appear below, exactly as he sent them. This page is that book and that promise, kept in one place — his notes, his numbers, his jokes, arranged as one continuous read.
Read it straight through, ideally with a pencil. Every chapter builds on the previous one, the way his course does — he does not front-load conclusions, and neither does this page. When you hit an artifact, stop and break it: every number in every artifact is taken from his notes, and each one has a trap he sets in class. Dotted-underlined terms open a plain-language definition on tap. The footnote markers are his digressions — read them; they are usually the best part.
— Harsh, who stitched the notes and built the artifacts
Plate I — image goes here
Suggested: the notes themselves, or takeaway №1 as it landed on WhatsApp
Chapter 1What finance actually does
Start with the misconception. "Finance" in most heads means trading screens, red and green, a man on TV shouting a target price. That is a thin slice of a much bigger machine, and not the important slice. Here is the whole machine, as the professor lays it out on the first page of his notes.
Finance does two big jobs. First, it moves resources from people who have them to people who can use them — from savers to investors. And note the vocabulary, because he is particular about it: an investor here is someone who invests in a real project — a factory, a fleet, a kitchen — not someone passively holding shares. Money itself is just the token that represents the resources. On its own it has no value. You cannot eat a ₹500 note; you can eat what it moves.
Second, finance distributes risk and reward between those two parties. The menu runs from debt at one end — the saver is promised a fixed return, the investor eats the surprises — to equity at the other, where the saver signs up for the surprises in exchange for the upside. In between sit insurance-like contracts, where an intermediary carries risk for a fee — known as a premium. Every security you will ever meet is some point on this line: who bears how much of the uncertainty, for what compensation.
Around these two jobs, three supporting functions. Information generation: someone has to collect and process the numbers so decisions aren't made blind — and having one intermediary monitor a borrower instead of a thousand small savers each doing it badly saves an enormous duplication of effort. Valuation: putting a number on an asset — the heart of the course, and of this page. And liquidity creation, about which the notes say, in his own words: "In my view, this is the most important function performed by finance. You may expect lots of interesting questions on this function in the exam." It deserves a paragraph, because it is genuinely clever.
Here is the problem liquidity creation solves. You, a saver, don't know when you will suddenly need your money — a wedding, a hospital, a visa deadline. Projects, meanwhile, are illiquid: half-built factories return nothing if abandoned. If every saver could yank money out of real projects on demand, every panic would force early liquidation and society would burn value for nothing. A bank solves this with actuarial cunning: it estimates what fraction of depositors will actually need cash at any time, keeps that much liquid, and locks the rest into long, illiquid, productive projects. It converts illiquid assets into liquid liabilities. Magic — until the day every depositor shows up at once, which is why bank runs are the recurring nightmare of financial history, and why the daily money-history card on this site keeps returning to them.
Now narrow the lens. Households manage budgets, mortgages and retirement — household finance. Governments tax, spend and borrow — public finance. Firms — corporate finance, our subject: how businesses make capital investment decisions, financing decisions, and dividend decisions. Before we can hand those decisions to a manager, one detour the notes take seriously: what exactly is a firm?
Forms of the firm
A sole proprietorship is one person, minimal regulation, and no legal daylight between the owner and the business — which cuts both ways. Equity capital is capped at the owner's personal wealth, so the firm cannot grow beyond a point; and liability is unlimited, so in a default the lenders can come for the owner's house. A partnership extends this to two or more people, each jointly and individually liable for everything, shares untradeable — the value of the business walks around in the owners' heads, so ownership cannot simply be transferred. A special form, the limited liability partnership, promises partnership taxation with company-style liability protection. Hold that promise; the professor is about to inspect it.
A corporation is an independent legal entity on its own — it can own assets, sign contracts, sue and be sued, and its passive shareholders enjoy limited liability: the company's debts are the company's problem. That is the textbook version. Months after the course ended, he sent the group the version the textbook leaves out:
The same scepticism applies to the LLP's promise. The books say the LLP offers the best of both worlds — taxed once like a partnership, liability limited like a company. His takeaway №3: "If reality is what the book says, we should have seen LLPs everywhere. However, start-ups are rarely incorporated as LLPs." In the registration data, new companies outnumber new LLPs roughly three to one. Partners are considered part of the management, so courts lift the veil at the drop of a hat — and VCs, who would have to enter as partners, dread this possibility. "The point is, there are trade-offs. For instance, if you want someone passionate about teaching, the person will have the same passion for setting the exams as well. Whenever someone says something offers the best of both worlds, treat it with caution and analyse." That sentence is not about LLPs. It is the operating principle of the entire course, and it will bill you again in Chapters 7 and 12.
The three decisions
Within a firm, the financial manager makes exactly three kinds of decisions. Investing decisions — which projects to do; this is capital budgeting, and the test is whether a project clears the hurdle of expected return: a high-risk project must promise a high expected return, or it dies on the desk. Financing decisions — what mix of debt and equity pays for it all, at the lowest cost of capital. Dividend decisions — how much profit goes back to shareholders versus staying in the business, and the rule is one comparison: reinvest if the marginal return on investment beats what shareholders could earn elsewhere; pay out if it doesn't. Younger, high-growth companies rightly retain; stable companies with fewer high-return openings rightly distribute. The hard part isn't the rule; it's the CEO admitting which kind of company he runs — Chapter 11 is about exactly that, and about the polite fictions firms use to avoid admitting it.
Three decisions. The rest of this essay is those three decisions taken seriously — which mostly means learning to see costs and values that never appear in an accountant's ledger. That is Chapter 2, and it starts with a trap that catches practicing managers, not just students.
Chapter 2The cost that never appears in the books
Here is a decision that looks trivial and isn't. Two projects on your desk, A and B. Project A: revenue 100, materials 30, wages 50 — profit 20. Project B: revenue 120, materials 30, wages 50 — profit 40. Every accounting system in the world, and most managers, say B. Forty beats twenty.
One detail. B needs your skilled workers, and they are currently running project C, which earns 50 a year. There is a shortage of skilled labour; nobody else can be hired. So choosing B means shutting C. Now redo the sum. B's true cost includes the 50 of profit that C stops earning — economists call it the opportunity cost, and it appears in no ledger. B's economic profit is 120 − 30 − 50 − 50 = minus 10. The "obviously better" project destroys value, and — as the notes put it flatly — the share price will decline if the manager goes with B on accounting logic. This is why the course insists on economic profit, never accounting profit, for decisions: economic profit adjusts for what you gave up.
The principle: the cost of doing anything is not what you pay out of pocket. It is out-of-pocket plus everything you gave up. Sounds obvious said aloud. Now watch how fast it stops being obvious — same projects, three situations:
Work through the third scenario, because it offends common sense most. C was shut down last year, but company policy or labour law means the workers stay on payroll — their 50 of wages flows out whether they work or not. A new pair of projects arrives, and only B can use these workers. B now shows an accounting loss of 10, and A a profit of 5. Yet B is the right answer: the wages are spent anyway — they are sunk — so B's real out-of-pocket labour cost is zero, and its economic profit is 40 against A's 5. In his words: "You are better off choosing project B, despite the negative accounting profit. The share price will increase after choosing B." Choose the project with the negative accounting profit, and the market applauds. If that sentence feels wrong in your stomach, good — that feeling is exactly what this chapter is for.
The mirror image of opportunity cost is sunk cost — money already spent, recoverable by no decision you can make now. The notes give the manager's version: you bought project A for 120 and project B for 30, years ago. Today you must raise 100 by selling one. A buyer offers 100 for either. Your own internal valuation says A is worth 80 and B is worth 120. Sell which? Obviously A — someone is offering 100 for a thing worth 80; take his money and run. What do managers actually do? They sell B. Selling A would mean "booking a loss" against the 120 they paid — a number that has no bearing on anything except their ego. The purchase price is gone; it is sunk; the only question is what each asset is worth versus what's offered today. Retail investors run the identical bug: clinging to losing stocks waiting to "recover their price," selling winners too early. The literature calls it the disposition effect. The professor calls it, correctly, a bias you should train out of yourself this term, because the market charges tuition forever.The evidence is fresh, and he shared it with the class: Guenzel, "In Too Deep: The Effect of Sunk Costs on Corporate Investment," Journal of Finance 2025 — CEOs' decisions to divest a unit depend heavily on the price paid for it years ago, irrelevant to value now, and the effect weakens when the divesting CEO is not the one who acquired it. The bias travels with the person, not the asset. His advice to future consultants when he shared it: "look for instances where organizations use sunk costs in decision making. This could be a good area of improvement."
So: the first discipline of finance is that decisions look only forward. Costs are what you give up from here; history is for accountants and sentimentalists. But "what you give up from here" raises the real question. When someone hands a firm money for a year, what exactly do they give up — and what is the fair charge for it? That number has a name — the cost of capital — and the course builds it from the ground up. The ground floor is a bag of rice.
Chapter 3The price of time and risk
Before a firm can judge any project, it needs to know what its money costs. Not roughly — actually. In simple words, the cost of capital is the expected return of investors: what they charge you for the use of their savings. The professor builds this number from the ground floor up, and he opens with a warning about the adage everyone arrives with.
Now the ground floor. Imagine a world with no money, no inflation, no risk — only rice. The average individual holds 10 kg. An investor asks to borrow 1 kg today, returned tomorrow. Exactly 1 kg back? You refuse — parting with rice today means postponing consumption you actually value. So he offers 1.2 kg tomorrow, and now you consider it. Ask for your second kilogram and you demand still more — say 1.4, or 2.8 in total — because each further kilo you give up costs you dearer consumption.His aside for the non-macro students, kept verbatim: "for those who are not going to learn macro, consumption means extracting the entire utility of a good or service immediately; savings means doing it over a period of time. Think about this." The options — 10 kg today; 9 today and 1.2 tomorrow; 8 today and 2.8 tomorrow — all leave you equally happy: an indifference curve. Read it sideways and it becomes a supply curve of savings: 20% to coax out the first kilogram, 40% for the second. That schedule — how much extra tomorrow-rice society demands per unit of today-rice — is the real rate of interest, also answering to the marginal rate of intertemporal substitution. It exists before money, before banks, before Excel. It is the price of impatience, and it is set by savers' preferences, not by any committee in Mumbai.
Where will the market settle? Wherever project returns stop beating the saver's asking price: if the first project delivers 40%, investors happily borrow the first kilogram at 20%, and so on until the two curves meet. "Please go back to your micro econ if this is not clear." Does the theory survive contact with India? His exercise, verbatim: "Please examine India's real rate over time as a shorthand. Calculate the real rate as the 10-year government bond yield minus inflation. You will quickly see that we have dramatically moved from nearly 1% in the 2000s to close to 3%. Now, think about how our society's preference for consumption today vs tomorrow has changed over time. Think about how your parents thought about savings and how you are thinking about it. That will give you the answer to whether the idea described above actually works. Remember, the smell test is the best test, and in the real world, most decisions are made based on smell tests."
Plate II — image goes here
Suggested: rice on a kirana scale — the original fixed deposit
Real-world transactions, though, occur in money, which quietly rots. A kg of rice costs Rs 100. You give up Rs 100 today (one kg) against a promise of Rs 120 tomorrow (1.2 kg at today's price). But rice inflates 10% to Rs 110 — and your Rs 120 now buys only 1.09 kg. To still earn the real rate in rice terms, you must charge x in money terms such that 100(1+x)/100(1+πe) = 1+r. And note the subscript: you adjust for expected inflation, not historical — the future makes historical inflation obsolete. Hence:
Risk-free rate = (1 + Real rate)(1 + Expected inflation) − 1
That x is the risk-free rate — a nominal rate, roughly what a government bond pays, and the minimum expected return before any risk enters the room. Two practical rules from Session 3 before risk enters. First, match the tenure of the government bond to the tenure of your project's cash flows — for multiple cash flows, weight each time by its cash flow value: a project paying 10, 10, 110 over three years has a duration of (1×10 + 2×10 + 3×110)/130 = 2.77, so use a 3-year bond. "If this is not clear, ask your finance friend. They will know this." Second: a government is risk-free only when it pays in a currency it prints. Lend to a government in a currency it does not print and you may have to factor in default. "Please read about defaults by Argentina. It is fascinating."
The lender's arithmetic
Now add the third floor: risk. Follow the notes' example. You can deposit at SBI at 10%, near risk-free. A firm asks you to lend instead. You know that, among firms like this one, about 10% default and pay back nothing. What do you charge? Not 10% — at 10% you lose money in expectation. You need the survivors to cover the corpses. Charge r such that 90% of borrowers paying (1+r) returns what SBI would have paid: 110/90, i.e. r = 22.22%. Check it: lend 100 to each of a zillion such firms and get back 0.9 × 122.22 ≈ 110 — exactly the deposit outcome. That extra 12.22 points is not profit and — he is emphatic — not a risk premium. It is bookkeeping for the defaults: what a perfectly calm, risk-neutral lender must charge merely to break even.His footnote defining the term: a risk-neutral lender is indifferent between a certain 100 and a coin-flip between 200 and 0. A risk-averse lender prefers the certain 100 — and every real lender is risk-averse. Price it yourself:
Could the market let you charge more — say 25% — and pocket the difference? No, and the reason is the same force that will police Chapter 8: if a contract with a known 10% default rate could be had at 25% while government bonds pay 10%, nobody buys the government bond, money floods these borrowers, and competition drives the rate back down until the expected return equals the risk-free rate. A precisely known default rate is not risk at all; the contract is a risk-free bond wearing a scary mask.
Where does risk actually arise? "The lender has a point estimate of 10% expected default. However, there is uncertainty around the point estimate. Actual default may turn out to be higher. The inability of the lender to precisely predict the default rate is the risk for which the lender will demand a premium." The 10% is an average; this year could be 30%. Humans dislike that uncertainty and charge extra for bearing it — that extra, above the arithmetic, is the true risk premium, and it swells with both the uncertainty and the lender's risk-aversion. In a crisis both swell together, which is why credit gets brutally expensive precisely when firms are desperate — the artifact above explains spreads on a normal Tuesday, and the premium explains 2008 and IL&FS-autumn 2018. Debt investors, note, are obsessed with worst-case scenarios rather than growth stories — their upside is capped at the coupon, so all the homework goes into the downside. That is exactly what credit ratings grade: the probability of default and the unpredictability around it. Where ratings don't exist, lenders fall back on the interest coverage ratio — EBIT over interest expense, a measure of whether cash flow covers the obligation. His caveat: do not ignore high-quality ground-level information just because an agency has not printed it.
One more subtlety, worth an exam question: whose risk-aversion sets the price? Not the average lender's — the marginal one's. Suppose you must sell two identical bonds. Your friendly first buyer accepts 7%; the last buyer you need demands 10%. You cannot price-discriminate, so both bonds pay 10%. Prices live at the margin — remember this the next time a promoter complains that "the market" misprices his paper. The market is just the last person he needed to convince.
So debt charges through a contract: coupon promised, worst case priced, premium for the fog around the average. But equity signs no contract at all. Neither the dividend nor tomorrow's share price can be contractually obligated — so how on earth does an equity investor charge? "Think about it! There is a more subtle way to determine the expected return on equity." The answer swims on television every week.
Chapter 4How equity charges — the shark and the beta
You are a start-up founder on Shark Tank. You have already invested Rs 100 and expect it to generate Rs 20 next year. You ask for another Rs 100, which you expect will also generate Rs 20. A shark offers you the Rs 100 — for a 55% stake.
Do the division his way. The offer implies a valuation of 100/0.55 = Rs 181. The firm's expected cash flow next year is 200 + 40 = Rs 240. So the shark's expected return solves 240/(1 + ke) = 181 — a cost of equity of 32%. If the Rs 240 arrives, 55% of it — Rs 132 — goes to the shark; you get Rs 108 on your Rs 100. Your return has been squeezed to 8%, because you are paying 32% for money on a project you expected to return 20%. The shark charges the expected return by controlling today's valuation. No coupon, no covenant — the price of entry is the contract. That is how equity charges.
Run his three scenarios on the artifact. At 55%, the shark charges 32% and your return is 8%. At 45%, the shark charges 8% — your stake is worth Rs 122 the moment the deal signs, and your return is 32%. At 60%, the shark charges 44%, the firm is valued at Rs 167, your Rs 100 stake is suddenly worth Rs 67, and your return is minus 4% — "you would rather invest your stake in a risk-free bond than accept the offer." To see why your value falls, imagine selling your remaining stake to a private-equity firm: it expects the same 32% return the shark just established, so it values your 45% claim on 240 at 108/1.32 = Rs 81. The deal with the shark repriced your firm.
Four statements, he insists, mean exactly the same thing: a higher expected return; a higher cost of equity; a lower valuation; a bigger stake for the same money. Internalise that equivalence and half of finance journalism becomes translatable — every "valuations are rich" headline is a sentence about expected returns wearing perfume.
Which risks get priced — CAPM
So the shark charges by pricing the stake. But how does the shark decide how much to charge? He warns you before presenting the answer: "At the end, I am going to present a celebrated model. The purpose is not to tell you that the real world works as per that model. In a statistical sense, the model does not work. But it contains directional truth, which is what we are after in this course."
First, classify the risks a firm faces. Macroeconomic risk — non-diversifiable, systematic: regulation, inflation, interest rates, wars, growth, ageing. It hits all firms in the same direction; no portfolio protects you. Firm-specific risk — diversifiable: a CEO exits, an industry rule changes, a competitor lands. Hold metal stocks and auto stocks together and a metal-price swing that hurts one helps the other; in a well-diversified portfolio, firm-specific risk can theoretically be driven to zero.
Why does the classification matter? Two sharks. Shark A holds a well-diversified portfolio; Shark B holds only pharmaceutical firms. A pharma start-up walks in. For Shark A, the firm's specific risks do not matter — they wash out in the portfolio; A prices only the macro risk. Shark B cannot diversify them away and must charge for both. So A charges a lower expected return, outbids B, and wins the deal. Investors like Shark A set prices in the market — which is why "the expected return only depends on the firm's exposure to macro or market risk, but not firm-specific risks." The market does not pay you for risks you could have washed out yourself. It is not a charity for the undiversified.
From there, the model. A firm that moves one-for-one with the market should earn the market's return. A firm that moves twice as much should earn twice the market's excess return. That sensitivity is beta, and the statement is the Capital Asset Pricing Model:
E(Rs) = Rf + β (Rm − Rf)
β is covariance(Rs, Rm)/variance(Rm) — estimated, in practice, by regressing past returns on the market's. He wants you to see the cracks immediately. First, you are using past data to estimate a forward-looking quantity: Reliance was largely an oil-and-gas company a decade ago; now retail, telecom and entertainment contribute a significant share of revenue. Second, the estimate is sensitive to the window — why 5 years and not 7, or 3? Each throws up a different beta. Then why persist with it? "There have been more complicated models to explain expected returns. However, even the complicated models have not been able to provide any predictive advantage over β. Hence, it is wiser to stick with a simple model for practical applications."
And directionally, beta behaves. Sort firms into ten groups by total volatility of returns, and next year's returns show no pattern — firm-specific risk is not priced, exactly as the two-sharks logic predicts. Sort by beta, and returns line up with it. Cyclical businesses — real estate, metals — carry high betas; FMCG and pharma sit low. Firms with high fixed costs (operating leverage) and high debt (financial leverage) are more exposed to macro swings, and their betas show it.
When the regression is hopeless — unlisted firm, shape-shifting conglomerate — build beta bottom-up: take listed comparables in each business the firm runs, average their betas, and weight by the firm's mix. Reliance in 2005 was an oil-and-gas beta; Reliance in 2020 was a weighted average of oil, telecom and retail. One correction is needed before averaging, and it becomes a running theme of this course: comparables' betas are estimated from their stock prices, so they carry each firm's leverage. Unlever them first — βu = βl/(1 + D/E) — average the unlevered betas, then re-lever at your own firm's D/E. Thumb rule from the notes: unlevered beta is always smaller, because financing risk has been stripped out. Why leverage inflates beta at all is a promise Chapter 8 keeps.
The next eight chapters are for the cohort
WACC and free cash flow, NPV and the share price, the IRR trap, the sorcery of Modigliani–Miller, the tax shield, bankruptcy and the two diseases of debt, the payout — and the artifact that flips a hundred-thousand-crore verdict with one cell. Sign in once — it is a gate, not a fee — and it stays open for you.
Chapter 5One discount rate, and what it discounts
Session 5 opens with a recap worth keeping whole: how would the three broad types of financing price the same promise of Rs 108 next year?
Expected return is not an abstraction — it is a cost, and his proof is a regulation you can watch working in the newspapers. The central bank raises banks' capital adequacy requirement: banks must fund with more equity. Take a bank at equity-to-debt of 1:9, cost of equity 20%, cost of debt 10%, lending at 11%. Its cost of capital is (20×1 + 10×9)/10 = 11%. Interest income of Rs 11 on 100: Rs 9 pays the depositors and bondholders, Rs 2 is left on Rs 10 of equity — 20%, exactly what equity expects. Everyone is paid; nobody writes a thank-you note.
Now the regulator moves the mix to 2:8. The cost of capital rises to (20×2 + 10×8)/10 = 12%. Keep lending at 11% and only Rs 3 remains for Rs 20 of equity — 15%, below the 20% the shareholders signed up for. "Hence, the stock price of the bank falls." To prevent it, the bank must raise lending rates to 12%. A change in the funding mix becomes a change in the price of every loan the bank writes. The SBI Chairman compressed it into one line after the announcement: "If my cost of funds is going up, I will certainly increase interest rates. We have to do the calculation."
A residual question from the beta discussion — the one he says may keep you awake at night: can't you diversify away market risk too, by holding high-beta and low-beta assets together? No, and the reason is the arithmetic of averaging. Diversification works on firm-specific risk because one firm's bad luck is another's good luck; the portfolio's volatility falls below the average of its parts. But hold a beta-2 asset with a beta-1 asset and the portfolio's beta is exactly the average — 1.5. Market risk does not cancel; it only dilutes toward the market's own risk, never below it. There is no clever combination of umbrellas that stops the monsoon.
WACC, and the cash flow it discounts
We now have both prices: cost of debt rd, cost of equity re. The blended price of the firm's money is the weighted average cost of capital:
WACC = D/(D+E) × rd + E/(D+E) × re
Discount the cash flows of the enterprise at the WACC and you get the enterprise value. (By enterprise, the notes mean the main business — the firm may own unrelated assets too. That distinction returns in a moment, wearing an exam question.) But which cash flow? Not profit — profit is an accountant's opinion. Free cash flow to the enterprise:
FCFEnt = Operating income (1 − tax) + Depreciation − Capex − ΔNet working capital
Start with after-tax operating income, then undo the accounting. Depreciation is a non-cash expense subtracted on the way to operating income — add it back. Capital expenditure is real cash out the door that never appears in operating income — subtract it. And the change in net working capital (ΔInventories + ΔReceivables − ΔPayables) corrects for the gaps between when revenue and expense are booked and when cash actually moves: inventories bought but not yet used, sales promised but not yet collected, purchases made but not yet paid for.
From enterprise to equity: subtract what belongs to the lenders. FCFEquity = FCFEnt − Net debt payments, where net debt payments are interest and principal paid minus new debt raised. Discount that at the cost of equity and you have the value of equity from the business. Two adjustments complete the picture: some firms hold non-operating assets — cash, land, someone's grandfather's tea estate — whose value belongs to the equity holders too; add it. Total equity value over the number of shares is value per share. This is also known as intrinsic value — the number every screaming TV debate is implicitly arguing about. And the bridge you will use your whole career:
Equity value + Debt − Non-operating assets = Enterprise value
Sometimes cash stands in for non-operating assets (the textbook does that), but this form is more general — his note. The full FCF and WACC mechanics are in the companion workbook, with live formulas.
So: WACC is the return the firm must beat for a project to be worth doing — the hurdle. Which raises the obvious question: beat it how, measured on what? The next chapter, and it is the best chapter.
Chapter 6NPV — the only number the share price obeys
Session 6 opens the toolbox for project selection: net present value, internal rate of return, payback period, profitability index. The professor starts with the economically soundest tool, and so do we.
NPV = PV of cash inflows − PV of cash outflows
His running example, which the next two chapters keep returning to: a project costs 100 today and pays 12, 11, and 110 at the ends of years one, two and three. The cost of capital is 10%. Discount each flow to today: 12/1.1 + 11/1.1² + 110/1.1³ = 102.645. Subtract the 100. NPV = 2.645. The selection rules: with no resource constraints, take every positive-NPV project; if projects are mutually exclusive, take the highest positive one. So far, mechanical. Now the two ideas that make this chapter matter.
First idea. Why exactly 2.645 — what does the number mean? The notes prove it with what he calls finance profit — the purest form of profit, after paying money its full rent. Each year, charge the project the cost of capital on the invested 100 — that's 10 a year. Year one: 12 − 10 = 2, worth 1.818 today. Year two: 11 − 10 = 1, worth 0.826. Year three: 110 pays back the 100 plus its final 10 of rent — nothing left. Total: 2.645. Exactly the NPV. Which is why, in an efficient market, the share price should rise by exactly the NPV the moment the project is announced — investor A holding a 100 stake will not sell to investor B for less than 102.645 once the project is public. The professor is honest about the friction: in practice investors don't fully trust managements' projections — information asymmetry — so prices move directionally rather than exactly. But the limiting logic is the point: NPV is not a score. It is the amount of shareholder wealth the decision creates, and the market reprices it immediately.
And the new buyer at 102.645 — is he a fool holding a squeezed lemon? "The answer is yes!" — sorry, that is his answer to whether B still earns anything: yes, the cost of capital, 10%, every year, regardless of what the firm does with the interim cash. That claim sounds too clean to be true, so the notes prove it both ways, and the artifact lets you slide between them:
Work the two ends of the slider against the notes. Full reinvestment: year-3 cash becomes 110 + 12(1.1)² = 124.52, and the year-1 price is 11/1.1 + 124.52/1.1² = 112.909 — precisely 10% above 102.645. Full dividend: the price is only 100.909 — the share price falls 1.69% — but add the Rs 12 dividend and B's return is (100.909 + 12 − 102.645)/102.645 = 10% again. A falling share price and a satisfied investor, simultaneously. File that away for every headline about a stock "punished" on its ex-dividend date. His homework asks you to verify the 6-and-6 split does the same; the artifact will show you it does.
Second idea — the hidden assumption, and this is where it gets interesting: "we will make things a little more complicated (or interesting — depending on your perspective)." Baked silently into that 2.645 is the premise that the 12 and 11 arriving in years one and two get reinvested at 10% until the end. Compound them forward to year 3 at 10% and the pile is 136.62; discount that pile back three years and the NPV is the same 2.645 — the assumption was invisible because it was self-consistent. Park the interim cash in a bank at 6% instead and the pile is only 135.14 — NPV falls to 1.535. The notes push further: make year one's flow 10 instead of 12, and the project is positive under the 10% reinvestment assumption and negative under 6%. Same project, same headline projections, opposite verdicts — hinging on an assumption nobody states in the board meeting. "An incorrect assumption about reinvestment can potentially lead to wrong project selections." Break it yourself:
Every valuation you will ever see carries assumptions like that one, stated or not. The course's whole method is to drag them into the light. And nowhere do they hide better than inside finance's most beloved single number.
Chapter 7IRR, and the tools you will meet in meetings
The internal rate of return is the discount rate at which NPV equals zero — "the project's return," as everyone sloppily says. For our cash flows the IRR solves a cubic and comes out at 11.07%.His footnote at this exact point in the notes, verbatim: "Before you all ask: There won't be questions in the exam that will require you to solve equations like the above. The questions will be more conceptual. Unsure whether that is comforting or not. (Btw, Nishant has added the above. He is picking up)" — Nishant being his teaching assistant, who appears in these notes the way a lab partner appears in lab notes. Selection rule: take projects whose IRR beats the cost of capital; among mutually exclusive ones, the highest such IRR. Being a ratio, it feels comparable and portable, which is why practitioners loved it for decades — the balance has been shifting to NPV, and by the end of this chapter you will know why.
Run the analogy from the NPV discussion — "draw an analogy from the NPV discussion and think about it before moving forward!" — and you can guess the flaw: IRR also hides a reinvestment assumption, except IRR's is worse. It assumes the interim cash flows are reinvested at the IRR itself. The 12 and the 11 are presumed to compound at 11.07% — a rate that exists nowhere except inside the formula. Compound them forward at 11.07% and you get 137.02, whose present value at 11.07% is exactly 100: NPV zero, assumption exposed, circle complete. Park the cash at a real bank at 6% and the true annualised return is 10.56%, not 11.07%.
Now his trap, spring-loaded. Your hurdle is 10.75%. The naive IRR — 11.07% — clears it. The true return — 10.56% — does not. "If you had done the naive estimation, you would have incorrectly accepted the project."
One honest exception, from the notes: if a project has no interim cash flows — one outflow now, one inflow at the end — there is nothing to reinvest, and IRR is exactly what it claims to be. Rare in practice. Everywhere else, treat a quoted IRR the way you treat a matrimonial-ad height: directionally informative, self-reported, and rounded up.
Three more failure modes, each one exam-fodder. NPV and IRR can contradict. Project A: invest 1,000, receive 10,000 — IRR 900%, NPV 8,091. Project B: invest 10,00,000, receive 20,00,000 — IRR "only" 100%, NPV 8,18,182. Mutually exclusive? IRR says A; NPV says B. "Always select projects based on NPV, because it has a direct bearing on shareholder value." A ratio cannot pay salaries; an absolute amount can. There can be multiple IRRs. IRR solves a polynomial; polynomials have multiple roots. His example — −5,00,000; +16,05,000; −17,16,900; +6,12,040 — has three IRRs: 4%, 7% and 10%. Which one goes in the board deck? Or none at all. Flip signs the wrong way (−105, +250, −150) and the polynomial has no real root. Excel prints #NUM! and the meeting moves on, none the wiser.
Plate III — image goes here
Suggested: Excel's IRR() returning #NUM!, at 300% zoom
Two more tools you will meet in meetings, each dispatched in a paragraph, which is roughly the respect they deserve. Payback period — the number of years for cumulative forecast cash flow to equal the investment; beloved of small and credit-constrained businesses. Project A: −2000, then 500, 500, 5000 — payback 2.2 years, NPV +2,624. Project B: −2000, then 500, 1800 — payback 1.83 years, NPV −58. Payback picks B; B destroys value. Two defects, per the notes: the cutoff period is arbitrary, and everything after the payback date — like A's 5,000 — is simply ignored. Profitability index — PV of inflows over PV of outflows; a ratio again, appealing for the same reason and lacking NPV's economic interpretation for the same reason.
↓ Download the companion workbook (.xlsx) — the NPV, IRR and capital-structure artifacts as spreadsheets with live formulas, built the way the course's own Excel models are. Break them there too.
Session 7 ends with a cliffhanger the next chapter resolves. Two firms, identical cash flows — 1,600 in the good state, 700 in the bad, equal odds. Firm A all equity; Firm B carries 500 of debt at 5%, cost of equity 15%. Work the arithmetic and Firm B appears to be worth 1,043 against A's 1,000. "Why should just mixing debt and equity in a different ratio generate different values? Does this produce some kind of arbitrage opportunity that one can exploit? We will try to resolve the puzzle in the next class."
Chapter 8"What sorcery is this?" — Modigliani–Miller
The financing decision, finally. The objective, from the first lecture: minimise the cost of capital. And since WACC is a weighted average of a cheap thing (debt) and an expensive thing (equity), a naive reading of the formula says: pile on the cheap debt and the average falls. If that were true, every CFO's job would be one phone call. "However, we will see that the conclusion is not so straightforward. The value added by debt does not arise from the fact that it is cheap."
The Session 8 setup — smaller numbers than the cliffhanger, same puzzle. Two firms. Good state: both earn 150. Bad state: both earn 80. Equal probability. Cost of equity 15%, cost of debt 5%. Firm A is all equity: expected value (130.43 + 69.57)/2 = 100. Firm B carries 50 of debt: it owes 52.5 next year, so equity gets 97.5 or 27.5; discount at 15% and the expected equity value is 54.35, plus 50 of debt — enterprise value 104.35. The firm got more valuable by rearranging the right side of its balance sheet. Free value, from a refinancing.
Through the eyes of a representative investor with 50 of capital: in firm A he owns half the equity and expects 57.5 next year — 15%, exactly the cost of equity. In firm B he expects 62.5 — 25%. Positive NPV for simply holding levered equity. In the notes at this point: "As a skeptical reader, each of you should have a question: what sorcery (I had to google this. Nishant's hidden talent is coming out) is this? Does just financing through debt result in an increase in the value of equity? Pause and think about it a bit."
The investor in firm A calls the bluff. He borrows 50 from the bank at 5% — pledging his shares if needed — and puts it into firm A's equity. Next year he repays 52.5 and keeps 97.5 in the good state, 27.5 in the bad. Identical to firm B's equity. Any investor can manufacture firm B at home, with a loan and a demat account. So nobody pays 54.35 for what can be home-made at 50 — the price competes down until the levered firm is worth exactly 100. That is the Modigliani–Miller theorem: capital structure does not matter for the total value of the firm. Slicing the pizza differently does not create pizza.
But the deeper explanation is not the arbitrage — it is why 50 is the right value, and it changes how you read every levered balance sheet for the rest of your life. Firm A's equity returns: +50% good, −20% bad — a range of 70 points. Firm B's: +95% good, −45% bad — a range of 140. "The range is a measure of volatility... firms with higher leverage face higher macro risk." Leverage concentrated the same swings onto a smaller equity slice, and risk is never free. Twice the volatility, twice the premium: firm A's equity premium was 10 points over the risk-free 5, so firm B's must be 20 — a cost of equity of 25%. Discount B's expected equity cash flow of 62.5 at 25% and you get... 50. "(Just to signal that I am also writing something.)"
The advantage of cheaper debt is precisely offset by costlier equity. WACC does not move.
The value of a firm comes from its projects — the left side of the balance sheet — not from financial origami on the right side. From WACCu = WACCl, one rearrangement gives the relation you met in the beta chapter, now derived rather than asserted: rl = ru + (ru − rd)(D/E) — and substituting CAPM, βl = βu(1 + D/E) when debt is riskless.Notes, verbatim: "I have not checked the formula as I am getting late to class; please bombard Nishant if there are errors." For the record: the formula checks out.
The assumptions doing the work: individuals can borrow on the same terms as firms; no taxes; no bankruptcy costs; no transaction costs. All unrealistic — "however, it delivers a powerful insight that is useful to the real world. You cannot create value by just borrowing cheaper debt." The assumptions are also the syllabus: relax them one at a time and watch where real value appears and disappears. That is the next two chapters.
Chapter 9The tax shield — three roads to the same number
Relax the first assumption: taxes. Interest expense is tax-deductible in India as nearly everywhere; dividends are not. Same firm as before — 50 equity, 50 debt at 5%, states of 150 and 80, tax rate 20%. Run it both ways. If interest were not deductible, tax hits the full income and equity receives 67.5 (good) or 11.5 (bad). With deductibility, tax is charged on income minus the 2.5 of interest, and equity receives 68 or 12. Half a rupee more in both states. "The increase in cash flows is without taking any risk. This is the advantage of debt." Small, free, riskless, and it scales with debt. The M&M conclusion bends:
Value of levered firm = Value of unlevered firm + Value of the tax shield
How do you fold that benefit into a valuation? Session 9 does it three ways on one deliberately simple firm — cash flows of 10 for four years, tax 50%, unlevered cost of equity 8%, cost of debt 6%, target debt-to-equity 1:1 (so the levered cost of equity, from the M&M relation, is 10%). Unlevered value: discount the after-tax 5s at 8% — 16.56.
Road 1, the WACC method. Put the tax benefit in the denominator: deflate the cost of debt by (1 − tax) — the taxman refunds that fraction of every interest rupee — giving WACC = (10% + 6%×0.5)/2 = 6.5%. Discount the same after-tax 5s: 17.13. Value added by debt: 0.57.At which point the notes pause mid-derivation: "This violates the M&M theorem (with due apologies to Grandhi — but I appreciate his sharp observation) — which had posited that capital structure is value irrelevant." The theorem is fine: it assumed no taxes, and we just added them. The catch: you need to know the D/E ratio the firm will maintain.
Road 2, adjusted present value. Put the benefit in a separate line: value the unlevered firm, then add the PV of the tax shield year by year — interest × tax rate, discounted at the business-risk rate of 8%. "Please do not use levered cost of equity. You are valuing the enterprise here." To demonstrate parity under the same D/E assumption the notes must derive each year's debt from each year's value — "we will cheat a little... you can see the circular logic here" — and the shield sums to the same 0.57. In practice you know the debt levels directly and there is no circle.
Road 3, the NOPAT method. Put the benefit in the cash flow: compute the actual tax paid (on income minus interest), subtract it from operating cash flow, and discount at the plain unlevered 8%. Same firm, same years — 17.13.
Three arrangements of the same algebra, and that is precisely the exam skill: knowing where the tax benefit sits in each method, so you neither drop it nor double-count it. Adjust the discount rate, or add a separate PV, or adjust the cash flow — pick exactly one. Score one real point for leverage, then. Now for the bill.
Chapter 10Bankruptcy — and what debt does to behaviour
Relax the second assumption. Change the bad state from 80 to 50, and let the levered firm carry real leverage: debt-to-equity of 2. The unlevered benchmark: expected cash flow (150 + 50)/2 = 100, value 86.96 at 15%. The levered firm borrows two-thirds of that — 57.97 — and here is the new ingredient: in the bad state, 50 cannot cover 57.97 plus interest. The firm will default half the time. Surely now value evaporates?
Not yet — and this is the chapter's first big idea: the lender prices default ex ante. To earn 5% in expectation he needs 60.87 back; he knows the bad state pays only 50; so the good state must pay 71.74 — an interest rate of 23.75%. The cost of levered equity, from the M&M relation at these weights: 15% = ke(1/3) + 5%(2/3), so ke = 35%. Equity gets 78.26 in the good state, nothing in the bad; value 28.99. Add the debt: 86.96. Unchanged. "Despite the bankruptcy, the value of the firm remains the same... the lender has already priced in the bankruptcy by charging a higher interest rate. Moreover, we have not considered any costs of bankruptcy. Therefore, there is no loss of value." Default, by itself, destroys nothing — it only reshuffles who gets paid. Every rupee was priced before it was lent.
Then add the thing that does destroy value. Bankruptcy has real costs: customers flee a wobbling firm, lenders file cases, lawyers bill, assets sell in a hurry. In the notes this is one clean change: the bad-state cash flow drops from 50 to 40. The lender re-prices — now he must charge 41% — and the cost of equity stays 35%, because bankruptcy cost is a firm-specific risk and firm-specific risk, as Chapter 4 taught you, is never priced into expected returns. Equity value falls to 25.28; the firm is worth 83.25. The missing 3.71 is the PV of the expected bankruptcy cost — a loss of 10, half the time, discounted at 35%: 5/1.35 = 3.70, his "another way to arrive at it." And notice who bears it: the equity holder, in advance, through the lender's rate. The lender priced himself out of harm's way; the shareholder paid for the lawyers before hiring them.
The trade-off theory of capital structure falls out in one line:
Vl = Vu + PV(tax shield) − PV(bankruptcy cost)
The optimal amount of debt is a trade-off between a tax benefit that grows steadily and a distress cost that grows explosively. Steady, predictable businesses — toll roads, utilities — can push far along the curve; volatile ones cannot. India's 2010s corporate-debt hangover, from the power-and-steel promoters to IL&FS, was a decade-long demonstration of firms mispricing the right-hand term.
Risk shifting
"Now, clear your mind from the hangover of the previous scenario (this is an attempt by Nishant to joke… I don't think this worked; he needs to work hard)." Debt does one more thing the formula cannot see: it changes what the people running the firm want to do. Two diseases, and he was still drilling the difference months after the course ended.
Disease one. Debt repayment due: 100. Cash in hand: 90. Equity gets nothing either way. Along comes a gamble: stake 20, double-or-nothing, win probability 10% — expected value hopelessly negative. The firm's expected cash flow drops from 90 to 74. The lender's expected recovery drops from 90 to 73. And the equity holder? From 0 to 1 — positive. Heads you win, tails the lender loses: your downside was already zero, so any lottery ticket bought with the lender's recovery is pure upside. "The equity investor is incentivized to invest in projects that have negative NPV for the firm." Risk shifting, asset substitution, overinvestment, gambling for resurrection — "I may use any of these terms in the exam." Run it:
Debt overhang
Disease two, the mirror image. Same 100 due, same 90 in hand — but covenants forbid touching the 90. A risk-free opportunity appears: put in 10, get 15, guaranteed — 50%, riskless, unambiguously positive NPV for the firm. The equity holder must fund the 10 from his own pocket. The firm's cash flow rises to 105; the lender collects his full 100, gaining 10; and the equity holder receives 5 — on an investment of 10. He loses 5 by doing the right thing, so he does not do it. Underinvestment: good projects die because their payoff services someone else's debt. Too little debt tempts nobody; too much debt poisons even good ideas.
The obvious objection got asked, and the notes preserve it: "Madhav and Kausik independently asked a great question. Why doesn't the bank bring in 10 in this case, as it can make money for sure? Two reasons. You don't have risk-free projects in the real world — the banker will be afraid of putting good money after bad if the new project has even a small risk. Second, lending to defaulting borrowers is considered restructuring. That will require provisioning (see your accounting notes if you still have them). Therefore, it is costly for banks." The bank's own accounting stops it. Every actor in this chapter is behaving rationally, and the firm is on fire anyway.
Plate IV — image goes here
Suggested: the main gate, pre-Hormuz
And the course's final word on debt is, deliberately, a kind one: debt disciplines. A manager with fat free cash and no interest bill is a manager one flattering investment banker away from an empire-building acquisition; a manager with an EMI thinks twice. It leaves less idle cash for negative-NPV vanity projects, and lenders bottle that discipline into covenants. Debt is neither cheap fuel nor poison — it is a governance instrument with a tax subsidy and a failure mode. "We end the FCRV sessions on this positive note." Which brings us, finally, to the decision everyone watches and few understand: what to do with the profits.
Chapter 11The payout — and what firms actually do
The profits are in. Keep them or return them? The rule from Session 1 is a single comparison: reinvest if the marginal return on investment beats the shareholders' expected return; pay out if it doesn't. If the company can compound the rupee better than its owners can elsewhere, keep it working. If it can't, handing it back isn't weakness — it's the only honest move, because retaining cash you can't deploy above the cost of capital destroys value with a straight face. Growth companies with rich project pipelines rightly retain; mature businesses with few high-return openings rightly distribute. The hard part isn't the rule; it's the CEO admitting which kind of company he runs.
Cash comes back through two pipes. Dividends — money lands in every account, taxed since 2020 as the shareholder's income (an earlier, stranger regime taxed the company instead, and payout fashion bent around the tax code, as it always does). Or buybacks — the company purchases its own shares. Buybacks come bundled with a party trick you should learn to see through: retiring shares shrinks the denominator, so earnings per share rises even when earnings don't. Managements with EPS-linked bonuses adore this. Watch the trick:
Same instrument, opposite outcomes depending on price: buy back cheap stock and the remaining owners genuinely gain; buy back dear stock and you've transferred wealth to the sellers on the way out. The announcement tells you nothing until you've formed a view on the valuation. Check the denominator before you applaud. (And remember Artifact №5: a share price falling on a payout date can coexist with a perfectly satisfied investor. The cash did not vanish; it moved accounts.)
What firms actually do
Now the closing move the notes make on each of the three decisions, and it may be the most useful thing in the whole course: hold the theory up against practice and measure the gap. Theory says invest in everything above the cost of capital. Practice keeps a buffer. When Tata Steel's CFO was asked about return hurdles on an earnings call, the answer — quoted in the notes — was: "It's more linked to the cost of capital. So, what works for in India, for example, our WACC hurdles are more than 12%. But in Europe, it will be around 9–10%. That's the IRR hurdle for approval of capex. But the ROIC that we are looking for is always at about 15%." A three-point cushion, held deliberately.
A recent study in the American Economic Review finds this is the norm, and worse: firms' hurdle rates are sticky. Despite two decades of falling cost of capital, the discount rates firms actually use barely moved. Pause on what that does to monetary policy: the RBI cuts rates so that cheaper capital spurs investment, banks eventually pass it on — and then firms don't lower their hurdles anyway. The lever moves; the machine barely does.His footnote in the notes, kept intact: this is over and above the slower transmission from banks that frequently attracts the central bank's attention. RBI is concerned that banks do not pass on lower rates to their borrowers. What we are discussing here is on top of that — even after obtaining lower rates, firms do not immediately increase investment. Full transmission from cost of capital to discount rates takes about 12 years (Gormsen and Huber, AER 2025 — the paper he shared in the group with one line: "The paper demonstrates, using data, that firms do not change their hurdle rate when cost of capital changes."). File it away for the macro sessions.
Financing shows the same theory-practice gap: firms do not run at the textbook-optimal debt mix; they carry less and pay fees for standby credit lines, buying financial flexibility — the ability to move in a bad year — at the cost of a not-quite-minimal WACC. None of this means the theory is wrong. His disclaimer, verbatim, because it is the method of the whole course: "An important disclaimer – we cannot totally disregard theory. My objective is to highlight that adjustments do not happen quickly in reality. Suppose you are an equipment manufacturer. You cannot increase production in the immediate aftermath of a decrease in interest rates — your customers do not lower their discount rates and increase investment immediately. However, over the long run, these adjustments happen as expected." The models tell you where gravity points. Practice tells you about the friction on the way down.
Chapter 12The skill to smell before the fire starts
The takeaway section of his notes begins by asking what the course actually equipped you with, and answers: the habit of probing assumptions. "In practical scenarios, most of the time, you will hear valuation being discussed in terms of ratios such as PE and EV/EBITDA. In the majority of cases, a naive way of arriving at the value is to use these ratios of comparable firms as the benchmark — also known as relative valuation. However, you must understand that there are underlying assumptions in the calculation of enterprise values of comparables as well. You are essentially relying on the assumptions made by someone else to value your own company — assumptions that may not be suitable for your firm's context."
His closing example. L&T must decide on a project: cash inflow of 10,000 crore at the end of year one, growing 20% a year for the next six years, then 10% in perpetuity, against an investment of 3,00,000 crore. In the base case the inflows are worth 2,53,779 crore — negative NPV, walk away. Nudge the initial growth assumption from 20% to 30% and the same project is worth 3,64,305 crore — comfortably positive. One assumption, one Excel cell, a hundred-thousand-crore swing.The notes print the two output values but not the discount rate behind them; the artifact backs out ≈16.15% from the base case, and at that rate the 30% scenario lands within ~7% of his printed figure — his sheet likely handles the terminal value slightly differently. The lesson survives any convention: the answer lives in the assumptions. (Editor's note, so you know exactly what is his and what is ours.)
"This is the skill that the course was intended to equip you with — the skill to 'smell' before the fire starts."
He kept teaching it after the term ended. When the group debated whether the Nifty was expensive because its P/E sat above the historical median, he replied with one message: "There is a fallacy here. Valuations are based on expected outcomes in the future. Whether or not this is high depends on our expected growth. History-centric analysis assumes that we will have similar growth." When Tata Capital filed its DRHP, the homework was one line: "Please spend some time coming out with your own valuation." Not "look up the grey-market premium." Build it, assumption by assumption, and know which cell your conclusion lives in.A worked version of exactly that exercise — a full DCF, dividend-discount and EV/EBITDA comparison on a real IPO — is in the companion workbook, following the valuation assignment from his course.
Plate V — image goes here
Suggested: one Excel cell, selected, bearing a hundred-thousand-crore verdict
So: what is corporate finance? Three decisions, priced honestly.
Decide what to buy — counting opportunity costs the ledger hides, ignoring costs already sunk, and scoring projects by the one number the share price obeys (Chapters 2, 6 and 7). Decide whose money to use — knowing the lender's arithmetic, how the shark charges, why the pizza doesn't grow, and how debt bends behaviour (Chapters 3, 4, 8, 9 and 10). Decide what to return — by the marginal-return rule, seeing through the EPS theatre (Chapter 11). And whenever anyone shows you a valuation, probe the assumptions — the reinvestment rate hiding in the NPV, the hurdle sitting quietly above the cost of capital, the bad state nobody modelled (Chapter 12, forever).
What can you do with this tomorrow? Read one annual report the way this essay reads projects: find the capex, ask what hurdle it cleared and whether interim cash could really compound there; check whether the debt matches the steadiness of the cash flows; and when EPS grows, check how much came from the numerator. Twenty minutes a quarter. It is more than most professionals do.
And where does risk assessment itself come from? His takeaway №1 ends with the handover: "If you ask me, how to assess risk — there is only one way. Your understanding of the business and the relevant macros. This is why macro is super important." The expected return you spent twelve chapters constructing is built on a real rate, an expected inflation, and a market risk premium — every one of them macro. His macro course picks up exactly there, and so does the next long read. The Indian financial system read shows the same machinery running a country's banking system.
One more thing. In February 2026, when the FT ranked ISB twelfth in the world, his reaction to the group was not a celebration: "Now all of you will have to take corporate finance exam again as we are supposed to be better than Yale and Chicago! The exam I gave does not cross the bar. Let's plan a re-exam in the light of these rankings." The re-exam never happened. The mock exam on this site is the next best thing — his own questions, from the group — and the artifacts above are the open-book version. "My hope is that these will be useful in your future decision-making. You should be able to use this in all interviews, including non-finance interviews."
And when your brother-in-law from IIM-A quotes a stock's IRR at the next family dinner, ask him — gently — what reinvestment rate it assumes. Then enjoy your dinner in peace.