PART IV: Investment Decision Making - From Financial Impact to Investment Choice

A financial model tells you what might happen.

An investment decision asks:

Is it worth doing?

That distinction is important.

Teams can build accurate financial models and still make poor investment decisions. They may calculate revenue, costs, profit, and cash flow correctly but fail to connect those numbers to the actual decision facing management.

Investment decision making is about comparing the resources required to pursue an opportunity with the value that opportunity is expected to create.

This requires more than one financial calculation.

It requires judgment.

The Purpose of Investment Analysis

When organizations invest, they give something up today in exchange for an expected benefit in the future.

That investment might involve:

launching a new product

opening a new location

purchasing equipment

implementing technology

entering a new market

acquiring another company

expanding production

hiring additional employees

developing new capabilities

The fundamental question is always:

Will the expected benefits justify the resources and risks required?

Different financial tools answer different versions of that question.

The Investment Decision Toolkit

This part of the manual introduces several tools that case teams can use to evaluate investments.

Chapter 8 — ROI

How profitable is the investment relative to its cost?

Chapter 9 — NPV

Does the investment create value after considering the time value of money?

Chapter 10 — IRR

What rate of return does the investment generate?

Chapter 11 — Comparing Investment Alternatives

Which investment creates the greatest value?

Chapter 12 — Sensitivity and Scenario Analysis

How robust is the decision when assumptions change?

These tools should not be viewed as competing formulas.

They answer different questions.

Discover Your Mad Skills Principle

The goal is not to calculate the number. The goal is to use the number to make the decision.

A judge does not need to know that you can calculate ROI.

They need to understand:

what the ROI means

whether it is attractive

what assumptions drive it

how it compares with alternatives

what risks could change the result

and what you recommend management do

The calculation is the evidence.

The decision is the point.

Deciphering Case Characteristics

Before choosing an investment metric, ask:

What decision is being made?

Are we deciding whether to invest at all?

Are we choosing between two projects?

Are we deciding how much to invest?

Are we deciding when to invest?

What information does the case provide?

Do we have:

initial investment?

annual returns?

costs?

cash flows?

timing?

discount rate?

comparable investments?

What level of analysis is appropriate?

Not every case requires a full discounted cash flow model.

Sometimes a quick ROI calculation is exactly what is required.

Other times, ROI is insufficient and the team needs NPV, IRR, or sensitivity analysis.

The skill is knowing the difference.

PART IV

INVESTMENT DECISION MAKING

The chapters that follow build progressively.

Start with the simplest question:

How much return are we getting for what we are investing?

Then move toward more sophisticated questions:

When do we receive that return?

What is the value of those future cash flows today?

What rate of return does the investment generate?

How confident are we that the investment will actually create value?

This progression allows students to understand not just the formulas, but why the tools exist.