Introduction to Corporate Finance: What Students Need to Know

The Three Core Questions of Corporate Finance

Corporate finance is built around three fundamental questions that every financial manager must answer. The first is the investment decision — also called capital budgeting: which long-term assets should the firm invest in? The second is the financing decision: how should the firm raise the money needed to make those investments? The third is the dividend decision: how much of the firm's earnings should be returned to shareholders, and how?

Every major concept in a corporate finance course connects to one or more of these three questions. Understanding that connection — seeing how NPV analysis, capital structure theory, and dividend policy all fit within a coherent framework — is what separates students who truly understand finance from those who simply memorise formulas.

The Goal of the Firm

Corporate finance theory begins with a clear statement of objective: the goal of the financial manager is to maximise the market value of the firm's equity — in other words, to maximise the current share price for existing shareholders. This is not the same as maximising profit. A firm could maximise short-term profit by cutting all research and development spending, delaying maintenance, and running down inventory levels — but these actions would typically destroy long-term value.

The focus on value rather than profit has an important implication: decisions should be evaluated based on their effect on the firm's cash flows, timing of those cash flows, and the risk associated with those cash flows. All three dimensions — magnitude, timing, and risk — feed into the value calculation through the discounted cash flow framework.

Time Value of Money: The Foundation

The time value of money is the cornerstone of all corporate finance. A dollar received today is worth more than a dollar received in the future because today's dollar can be invested to earn a return. The present value of a future cash flow equals that cash flow divided by (1 + r)^n, where r is the discount rate and n is the number of periods.

Mastering time value of money calculations — present value, future value, annuities, and perpetuities — is non-negotiable for any finance student. These calculations appear in bond valuation, stock valuation, lease accounting, pension accounting, and capital budgeting. Every subsequent topic in corporate finance builds on this foundation.

Capital Budgeting: The Investment Decision

Capital budgeting is the process of evaluating long-term investment decisions — whether to build a new factory, launch a new product line, acquire a competitor, or replace aging equipment. The primary tool for making these decisions is net present value (NPV).

NPV equals the present value of all expected future cash flows from a project minus the initial investment. If NPV is positive, the project creates value — accept it. If NPV is negative, the project destroys value — reject it. The NPV rule is the most theoretically correct decision rule in capital budgeting.

Other tools include the internal rate of return (IRR), payback period, and profitability index. Each has its merits and limitations. IRR gives the same accept-reject decisions as NPV for independent projects but can give incorrect rankings for mutually exclusive projects. The payback period ignores the time value of money and cash flows beyond the payback date. Understanding when each tool is appropriate — and when it misleads — is a key competency in corporate finance courses.

Practise your NPV and capital budgeting skills with adaptive questions on PrepQBank.

The Financing Decision: Capital Structure

Once a firm decides to make an investment, it must decide how to finance it. The two primary sources are debt (borrowing money) and equity (issuing shares). The mix of debt and equity in a firm's capital structure affects its cost of capital, its financial risk, and ultimately its value.

The Modigliani-Miller theorem — the starting point for all capital structure theory — states that in a perfect capital market without taxes, the value of a firm is independent of its capital structure. In the real world, taxes make debt attractive (because interest payments are tax-deductible), but financial distress makes excessive debt costly. The trade-off theory argues that the optimal capital structure balances these two forces.

The weighted average cost of capital (WACC) is the discount rate that reflects the blended cost of the firm's financing. Understanding how to calculate and interpret WACC is essential for capital budgeting, firm valuation, and the financing decision. Practise WACC calculations with PrepQBank questions.

Working Capital Management

In addition to long-term capital budgeting and financing decisions, financial managers must manage working capital — the short-term assets and liabilities that support day-to-day operations. Working capital management involves balancing the need for liquidity against the cost of holding idle current assets.

The cash conversion cycle — Days Inventory Outstanding + Days Sales Outstanding minus Days Payable Outstanding — measures how long it takes the firm to convert investments in inventory and receivables into cash. A shorter cycle is generally better, as it means the firm spends less time with its cash tied up in the operating cycle.