Capital Allocation, Capital Structure, and WACC

How Level I tests capital budgeting, NPV and IRR, ROIC, real options, WACC, and leverage tradeoffs.

This is where Level I Corporate Issuers becomes explicitly decision-oriented. The exam often asks which project or financing choice actually creates value rather than which one sounds bold or sophisticated.

Why This Lesson Matters

Candidates often know the formulas but still miss the question because they fail to ask:

  • what capital-allocation problem the firm is trying to solve
  • whether the project clears the right decision rule
  • how leverage changes both value and risk
  • whether management is choosing a financing mix that fits the issuer

The stronger reader sees capital allocation and capital structure as connected decisions.

NPV, IRR, And ROIC Answer Different Questions

MeasureWhat it helps decideCommon Level I trap
Net present value (NPV)Whether the project adds value in currency termsIgnoring scale and timing differences only to favor a high percentage return
Internal rate of return (IRR)The discount rate that makes NPV equal zeroTreating IRR as superior to NPV in every case
Return on invested capital (ROIC)How productively capital is being usedUsing it without comparing it to the cost of capital

The core NPV rule is:

$$ NPV = \sum_{t=0}^{n} \frac{CF_t}{(1+r)^t} $$

If NPV is positive, the project adds value under the assumptions used.

Real Options Matter Because Managers Are Not Always Locked In

Level I often introduces real options to show that capital investment can include flexibility:

  • option to delay
  • option to expand
  • option to abandon
  • option to switch use or input

The point is not advanced option pricing. It is recognizing that managerial flexibility can change project value.

Capital Allocation Is A Process, Not A Single Formula

Allocation questionWhy it matters
Reinvest in the business?Supports long-term growth if returns justify it
Return capital to investors?May be better if internal opportunities are weak
Acquire or divest?Changes strategic direction and risk
Preserve liquidity?Sometimes the best decision is flexibility, not expansion

Level I often tests whether management is choosing the use of capital that best fits opportunity quality and constraints.

WACC Connects Financing Mix To Project Hurdle Rate

The standard form is:

$$ WACC = w_d r_d (1-T) + w_e r_e $$

where debt and equity weights reflect the firm’s financing mix.

The formula matters because it links capital structure to project evaluation. A project does not create value just because it has a positive accounting return. It must exceed the relevant cost of capital.

Capital Structure Is About Tradeoffs, Not Maximizing Debt Or Equity

ConsiderationWhy it mattersTypical Level I angle
Debt tax shieldDebt can lower effective financing cost through tax deductibilityCandidates may overstate the benefit and ignore distress cost
Financial distress riskToo much leverage raises default and flexibility riskLevel I often tests the downside of excessive debt
Business riskMore stable firms can often support more leverage than volatile onesCapital structure depends on issuer characteristics
Target structureFirms often move toward a preferred financing mix over timeThe question may ask why actual and target structure differ temporarily

Level I may also reference Modigliani-Miller to show the difference between idealized assumptions and real-world frictions.

How CFA-Style Questions Usually Test This

  • by asking whether NPV or IRR gives the better decision rule in a conflict
  • by testing why ROIC must be compared with cost of capital
  • by using a WACC setup to interpret project or issuer choices
  • by asking which factor should push leverage higher or lower

Mini-Case

A company has one large project with a positive NPV but a lower IRR than a smaller alternative. A weak answer automatically picks the higher IRR because the percentage looks stronger. A stronger answer asks which project creates more value in absolute terms and whether the projects are mutually exclusive.

That is classic Level I design: the attractive-looking ratio is not always the right decision rule.

Common Traps

  • preferring IRR to NPV mechanically
  • forgetting to compare ROIC with cost of capital
  • treating debt tax benefits as if they have no offsetting cost
  • assuming capital allocation and capital structure are unrelated decisions

Sample CFA-Style Question

An analyst says increasing debt should always raise firm value because debt is cheaper than equity. What is the strongest critique?

Best answer: That is incomplete because greater leverage can also increase financial distress risk and reduce flexibility, so the value effect depends on tradeoffs rather than cost alone.

Why: Level I often tests whether you understand capital structure as an optimization problem, not a one-direction rule.

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