01 — Finance · Core
Corporate Finance & Valuation
In brief
- Corporate finance answers three questions: where to invest, how to fund it, and how much cash to return to owners.
- A dollar today is worth more than a dollar tomorrow. Discounting future cash to today's value is the heart of all valuation.
- A business is worth the cash it will generate in the future, discounted back to now — that's the DCF model.
- Capital has a cost. A company only creates value when its returns beat the cost of the money it uses.
Corporate finance is the art of allocating capital — deciding which projects deserve money, where that money should come from, and what a business is ultimately worth. It's how a CFO thinks and how a serious investor judges a company. This lesson covers the core ideas, ending with the question everything points to: what is this business actually worth?
The three decisions
Strip away the jargon and every finance department wrestles with three choices:
- Investment — which projects, products, or acquisitions to put money into. (Capital budgeting.)
- Financing — whether to fund them with debt, equity, or retained profits. (Capital structure.)
- Distribution — whether to reinvest profits or return them to shareholders via dividends or buybacks.
Get these right consistently and a company compounds value. Get them wrong — overpaying for acquisitions, taking on too much debt, hoarding cash that earns nothing — and even a good business erodes.
The time value of money
The single most important idea in finance: a dollar today is worth more than a dollar in the future. Today's dollar can be invested to earn a return, and inflation erodes tomorrow's. So to compare cash arriving at different times, we translate future amounts into today's terms — a process called discounting.
The further away a cash flow is, and the higher the rate we discount at, the less it's worth today. This is why a risky startup promising profits in ten years is valued so cautiously, while steady cash next year is prized. Master this one idea and most of valuation follows.
The cost of capital
Money is never free. Lenders want interest; shareholders want returns for the risk they take. Blend the two — weighted by how much of each a company uses — and you get the weighted average cost of capital (WACC), the minimum return a company must earn to satisfy everyone who funded it.
This is the bar. A project expected to return 12% when capital costs 8% creates value. The same project creates destruction if capital costs 15%. Value is created only when returns exceed the cost of capital — a deceptively simple rule that explains most corporate success and failure.
Capital structure: debt vs equity
How should a company fund itself? Debt is cheaper — interest is tax-deductible and lenders demand less than shareholders — but it must be repaid on schedule regardless of how business is going, which adds risk. Equity never has to be repaid and absorbs bad years, but it's expensive and dilutes ownership.
The skill is balance. A little debt can boost returns to shareholders (leverage works both ways); too much turns a downturn into bankruptcy. The right mix depends on how stable and predictable the company's cash flows are — a utility can carry far more debt than a biotech startup.
What a business is worth
Valuation comes down to a single principle: a business is worth the cash it will produce over its life, discounted to today. Three approaches put numbers on it:
- Discounted cash flow (DCF) — project the company's future free cash flows, discount them back at the cost of capital, and sum them. The most rigorous and the most sensitive to assumptions.
- Multiples — compare against similar companies using ratios like price-to-earnings (P/E) or enterprise-value-to-EBITDA. Fast, market-based, but only as good as the comparison.
- Asset-based — value the net assets directly. Useful for asset-heavy or distressed businesses.
No model gives the answer. A valuation is a structured argument about the future, and small changes in growth or discount-rate assumptions swing it enormously. The number matters less than understanding what drives it — which is precisely the analyst's edge you'll sharpen in the Markets track.
Returning cash to owners
When a company generates more cash than it can profitably reinvest, it should return the surplus. Dividends pay shareholders directly in regular cash. Buybacks repurchase shares, shrinking the count so each remaining share owns a bigger slice. Both reward owners; the right choice depends on tax, signalling, and whether the shares are cheap. A company that keeps hoarding cash it can't deploy is quietly destroying value — capital sitting idle still costs something.
Key terms
- Time value of money — a dollar today is worth more than a dollar later.
- Discounting — translating future cash into today's value.
- WACC — the blended minimum return a company must earn on its capital.
- DCF — valuing a business by its discounted future cash flows.
- Leverage — using debt to amplify returns (and risk).
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