A Problem-Based Learning Activity

Joint
Ownership Inc.

Four friends, one beach house, and no obvious way to split the costs fairly.

Textbook
Fundamental Managerial Accounting Concepts
Chapter
Ch. 4 — Cost Accumulation, Tracing, and Allocation
Activity Time
30–50 minutes
Edmonds Accounting Cover
1 Step 1 of 7 · Scenario Setup

An Introduction to Joint Ownership Inc.

Joint Ownership Inc. is a startup piloting an app that lets groups of friends co-own high-value assets they couldn’t afford alone. The app tracks usage, logs expenses, and allocates costs based on customized ownership structures and agreements.

Your team is helping pilot the app with a beach house jointly owned by four friends. Each owner uses the house differently, pays for different things, and has made unequal financial contributions.

The app must allocate costs fairly.  But what does “fair” mean?

Edmonds Accounting Step 1 · Scenario
2 Step 2 of 7 · Identify Costs

What are the potential costs the group will need to split?

Beach House Costs

Type each expense the class calls out. Press Enter to add another row.

Edmonds Accounting Step 2 · Identify Costs
3 Step 3 of 7 · Assign Cost Drivers

For each expense, what’s a fair way to split it?

Don’t overthink it — first instinct is fine. We’ll test these next.

Beach House Costs
Class Method for Assigning Cost
Edmonds Accounting Step 3 · Class Drivers
4 Step 4 of 7 · AI as a Teammate

Get a second opinion. Compare, don’t copy.

Click “Get AI Suggestions” to have the AI select its preferred method for each cost. Hover over any AI-filled cell to see the reasoning behind its choice.

Beach House Costs
Class Method
AI Method
Edmonds Accounting Step 4 · AI Teammate
5 Step 5 of 7 · Final Decision

Commit and defend the final decision.

For each expense, the class must commit to a single method. Be ready to defend each choice.

Beach House Costs
Class Method
AI Method
Final Method Chosen
Edmonds Accounting Step 5 · Commit
6 Step 6 of 7 · Manual Calculation

Now run the numbers.

Use the chosen cost driver to allocate each expense among the four owners. Enter the amount each owner owes, then grade.

Edmonds Accounting Step 6 · Calculate
7 Step 7 of 7 · Discussion & Bias Reflection

Compare. Debate. Reflect.

Discussion

1
Reflect on your chosen methods and consider whether any of them could create unforeseen consequences in how the owners use the property.
2
Does each method of assigning cost come at the same price? Are there any associated costs with measuring the inputs to perform each method you chose?
3
How do the concepts we learned apply to a corporate setting? What types of revenues or costs might a company need to assign, and to whom or what would they be assigning them?

Bias Reflection

Which of these shaped your choices?

Automation Bias

Did you tend to assume the AI is more intelligent than you?

Confirmation Bias

Did you readily accept AI suggestions that agreed with your initial cost driver choice?

Edmonds Accounting Step 7 · Discuss

Recap · The Terminology

Associating formal accounting terminology.

You’ve already been using these terms. Here they are.

Cost Object

Anything for which you want a separate cost.

In the caseEach owner represents a separate cost object.
Cost Driver

A measurable factor used to assign costs to a cost object.

In the caseThe method you used to assign cost to individual owners.
Cost Pool

A grouping of indirect costs allocated together based on a shared cost driver.

In the caseAny costs which you assigned the same method to.
Direct Cost

Can be traced directly to a cost object.

In the caseAny cost that can be traced directly back to an owner (e.g., purchase price).
Indirect Cost

Must be allocated; can’t be traced directly.

In the caseAny cost that couldn’t be directly traced back to a specific owner (e.g., utilities).
Cost Allocation

Assigning indirect costs using a consistent, logical method.

In the caseThe whole exercise you just completed.
Edmonds Accounting Recap · Terminology