Updated for the 2026-2027 CFA® Level I curriculum.
Capital allocation is how a company decides which long-term projects to fund. The decision rests on a small set of principles that keep the analysis focused on economic value instead of accounting appearances. CFA Level I tests whether you can spot when a company violates one of these principles. This note pairs each principle with the specific pitfall it is designed to prevent.
Quick Answer
Sound capital allocation relies on cash flow, not accounting income. Decisions use incremental, after-tax cash flows, include opportunity costs and externalities, and exclude sunk costs and financing costs.
Common pitfalls include counting sunk costs, ignoring cannibalization, using accounting profit instead of cash flow, and letting optimistic narratives replace disciplined analysis. Violating any principle distorts the investment decision and can destroy shareholder value even when the project looks attractive on paper.
Key Takeaways
Capital allocation principles focus on incremental, after-tax cash flows, not accounting net income.
Sunk costs are always excluded because they do not change based on the current decision.
Opportunity costs must be included even when no cash changes hands.
Externalities, including cannibalization of existing products, belong in the analysis.
Financing costs are excluded from project cash flows because they are already captured in the discount rate.
Each pitfall on the exam maps back to one specific principle being ignored.
Good capital allocation increases company value. Poor capital allocation can destroy it even when the project appears profitable on the surface.
What You Need to Know for CFA Level I
Be able to name the core principles behind sound capital allocation decisions.
Recognize when a project description violates a specific principle, not just "makes a mistake."
Understand why sunk costs, opportunity costs, and externalities are treated differently in cash flow analysis.
Know that financing costs never belong in project-level cash flows.
Connect disciplined capital allocation to company value and shareholder wealth.
Be ready to identify a pitfall from a short scenario, not just recite a definition.
What Are the Principles of Capital Allocation?
Sound capital allocation rests on a consistent set of rules. Each one exists to keep the analysis tied to real economic impact.
Decisions are based on cash flows, not accounting income. Accounting earnings include noncash items and allocation choices that do not reflect actual cash movement.
Only incremental cash flows matter. Analysts consider the difference in company cash flows with the project versus without it.
Cash flow timing is considered. A dollar received sooner is worth more than a dollar received later.
Cash flows are analyzed on an after-tax basis. Taxes reduce the cash actually available to the company.
Financing costs are excluded from cash flow estimates. Interest and other financing effects are captured in the discount rate, not in the project's cash flows.
Sunk costs are excluded. Money already spent does not change with the current decision, so it is irrelevant.
Opportunity costs are included. Using an asset for one project means giving up its next-best use, and that lost value counts as a cost.
Externalities are included. Effects on other parts of the business, such as a new product reducing sales of an existing one, belong in the analysis.
Common Capital Allocation Pitfalls
Each pitfall below traces back to a broken principle.
Pitfall | Principle Violated |
|---|---|
Including sunk costs in the decision | Sunk costs are excluded |
Ignoring opportunity costs of an asset already owned | Opportunity costs are included |
Ignoring cannibalization of existing product lines | Externalities are included |
Basing the decision on accounting net income instead of cash flow | Decisions are based on cash flows, not accounting income |
Including interest expense in project cash flows | Financing costs are excluded from cash flow estimates |
Letting an appealing strategic story override the cash flow analysis | Decisions are based on cash flows, not accounting income |
A common exam scenario describes a manager who wants to approve a project because it "fits the company's growth strategy" while the cash flow analysis is weak. That is a pitfall, not a principle. Strategic fit does not replace disciplined cash flow evaluation.
How Capital Allocation Decisions Affect Company Value
Capital allocation connects directly to shareholder value. Projects that earn returns above the cost of capital increase company value. Projects that fail to clear that bar destroy value, even if they raise revenue or accounting profit in the short term.
This is why the principles matter beyond exam mechanics. A company that consistently violates them, by chasing accounting income or ignoring opportunity costs, tends to approve projects that look good on a report but do not build real value. Over time, that gap between reported performance and economic value shows up in a lower share price.
How to Evaluate a Capital Allocation Decision
Use this short checklist when a scenario describes a proposed project:
Are the cash flows incremental to the company, not just to the project?
Have sunk costs been excluded from the analysis?
Are opportunity costs of existing assets included?
Are externalities, such as cannibalization, accounted for?
Is the analysis based on after-tax cash flow rather than accounting income?
Are financing costs kept out of the project cash flows?
If a scenario fails any of these checks, the analysis is flawed regardless of the final NPV or IRR result.
Common Exam Traps
Counting sunk costs as relevant
A common setup describes money already spent on a feasibility study, then asks candidates to include it in the decision. It should be excluded because it does not change with the current choice.
Using accounting profit as the decision basis
A scenario may highlight rising net income to justify a project. Net income is not the same as cash flow, and the principle calls for cash flow analysis.
Treating a strategic label as sufficient analysis
Phrases like "fits our long-term vision" sound persuasive but do not substitute for a disciplined cash flow evaluation.
Ignoring cannibalization
A new product that pulls sales from an existing product still creates a real cost to the company, even though no separate cash outflow is recorded.
Reworking full NPV or IRR calculations
This note focuses on principles and pitfalls. Detailed metric calculations belong on the dedicated NPV, IRR, and ROIC note.
Practice Question
A manufacturing company is evaluating a new production line. The proposal states that $200,000 already spent on a feasibility study should be included as a project cost. The proposal does not mention any impact on the company's existing product line, even though the new line is expected to draw some customers away from an older, similar product.
Which capital allocation principle is most clearly violated in this proposal?
The principle that cash flows should be analyzed on an after-tax basis
The principle that sunk costs should be excluded from the analysis
The principle that financing costs should be excluded from project cash flows
Correct Answer: B
The $200,000 feasibility study cost was already spent before the current decision. It does not change based on whether the company approves the new production line, so it is a sunk cost and should be excluded. The scenario also raises a cannibalization concern, but the question asks for the principle "most clearly violated," and the sunk cost inclusion is the direct, unambiguous error described.
Option A. The scenario gives no information about tax treatment, so there is no basis to conclude this principle was violated.
Option C. There is no mention of financing costs or interest expense in the proposal, so this principle is not tested here.
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FAQs About Principles of Capital Allocation
Why are sunk costs excluded from capital allocation decisions?
Sunk costs have already been incurred and do not change based on the current decision. Including them distorts the true incremental impact of the project.
Why are financing costs left out of project cash flows?
Financing costs are already reflected in the discount rate used to evaluate the project. Including them again in the cash flows would double count their effect.
How does capital allocation connect to shareholder value?
Projects that earn more than the cost of capital increase company value. Projects that fail to do this can reduce value even if they raise short-term accounting profit.