Western Governors University

D105: Intermediate Accounting III

A study guide to WGU's final intermediate accounting course on revenue recognition, investments, income taxes, leases, pensions, accounting changes and disclosure.

Updated October 2026 · 5 min read

D105 completes WGU's intermediate accounting sequence with some of the most technical topics in financial reporting: revenue, investments, income taxes, leases and pensions.

WGU's program guide describes comprehensive coverage of investments, revenue recognition, accounting for income taxes, pension plans and leases. It also covers accounting changes and error analysis, full disclosure requirements and interpretation of the statement of cash flows. Intermediate Accounting I and II are the prerequisites.

Each topic has its own standard and vocabulary. Treat them as separate units and practice each until the entries make sense.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
CodeD105
LevelUndergraduate, B.S. Accounting
Competency units3
PrerequisitesIntermediate Accounting I and II
Typical workAdvanced GAAP problems (check your course page for the assessment format)

What D105 Covers

Competency (summarized)Key topics
Account for revenueFive-step model, performance obligations
Account for investmentsDebt and equity securities, equity method
Account for income taxesDeferred tax assets and liabilities
Analyze leasesLessee finance and operating leases
Analyze accounting changes and errorsChanges in principle and estimate, restatements
Describe pension accountingDefined benefit obligations and plan assets

Key Concepts Explained

The Five-Step Revenue Model

Under ASC 606: identify the contract, identify the performance obligations, determine the transaction price, allocate the price to the obligations, and recognize revenue when (or as) each obligation is satisfied.

Example: A firm sells a machine with one year of maintenance for $11,000. Standalone prices are $10,000 for the machine and $2,000 for maintenance. Allocation: machine $11,000 x 10/12 = $9,167, maintenance $1,833. Machine revenue is recognized on delivery; maintenance revenue over the year.

Deferred Taxes

Temporary differences between book and tax amounts create deferred tax liabilities or assets.

Example: Book depreciation is $20,000 but tax depreciation is $35,000. Taxable income is $15,000 lower now and will be higher later. At a 21% rate, a deferred tax liability of $3,150 is recorded.

Leases

Under ASC 842, lessees recognize a right-of-use asset and a lease liability for most leases longer than 12 months. Finance leases recognize interest and amortisation separately; operating leases recognize a single straight-line lease cost.

Investments

Debt securities are classified as held-to-maturity, trading or available-for-sale. Equity investments with significant influence, often around 20% to 50% ownership, generally use the equity method.

Accounting Changes, Errors and Disclosure

The course also covers how to report changes and fix mistakes. Each type has a different treatment:

TypeTreatment
Change in accounting principleUsually retrospective, restating prior periods
Change in accounting estimateProspective: current and future periods
Correction of an errorRestate prior periods; adjust opening retained earnings

Full disclosure means notes explain policies, judgments and events that users need to understand the statements. Questions often ask whether an item requires recognition, disclosure or neither.

Typical Tasks and How to Approach Them

Task typeWhat it testsHow to approach it
Revenue problemsFive-step modelWork through the five steps in order, every time
Deferred tax problemsTemporary versus permanent differencesClassify each difference before calculating
Lease problemsClassification and measurementCalculate present value of payments, then build a schedule
Changes and errorsCorrect reporting approachIdentify the type first, then apply its treatment

Pension Basics

The pension competency asks you to describe the accounting for defined benefit plans. In a defined contribution plan, the employer's expense is simply the contribution. A defined benefit plan promises a future benefit, so the employer bears the investment and actuarial risk.

The key figures are the projected benefit obligation (the present value of benefits earned so far) and the fair value of plan assets. If the obligation exceeds the assets, the plan is underfunded and a net liability is reported.

Pension expense typically combines service cost, interest cost on the obligation, the expected return on plan assets and amortisation of certain deferred items. Learning what each component means makes the journal entries far less intimidating.

Example: The projected benefit obligation is $2.4 million and plan assets are $2.1 million. The balance sheet reports a net pension liability of $300,000, and notes disclose the main assumptions such as the discount rate.

Where Students Get Stuck

Study Tips for D105

How We Help with D105

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Frequently Asked Questions

What does D105 cover?

Investments, revenue recognition, income taxes, pensions, leases, accounting changes and errors, full disclosure and cash flow statement interpretation.

What are the prerequisites?

WGU lists Intermediate Accounting I and II.

Is D105 the last intermediate accounting course?

Yes. WGU describes it as completing the intermediate accounting journey.

What is ASC 606?

The U.S. GAAP standard for revenue from contracts with customers, built on a five-step model.

How is D105 assessed?

WGU uses objective assessments, performance assessments or both. Check your course page for the current format.

Can you help me prepare?

Yes, with worked problems and explanations. We do not take assessments for students.