D101 teaches accounting majors how to collect and interpret cost information for planning, control and decision making inside a business.
WGU's B.S. Accounting program guide describes the course as focusing on the concepts and procedures needed to identify, collect and interpret accounting data for management control and decision making.
Topics include budgeting, cost-volume-profit analysis, job costing, process costing, activity-based costing, standard costing and differential analysis. Prerequisites are Principles of Accounting and Financial Accounting.
The course is calculation-heavy, with seven competencies. Students who learn each method's purpose, not just its steps, find the problems far easier.
Course at a Glance
| Item | Details |
|---|---|
| University | Western Governors University (WGU) |
| Code | D101 |
| Level | Undergraduate, B.S. Accounting |
| Competency units | 3 |
| Prerequisites | Principles of Accounting and Financial Accounting |
| Typical work | Costing and budgeting problems (check your course page for the assessment format) |
What D101 Covers
| Competency (summarized) | Method |
|---|---|
| Use job-order costing | Costs traced to individual jobs or batches |
| Apply process costing | Costs averaged over continuous production |
| Apply overhead using activity-based costing | Overhead assigned by activities and cost drivers |
| Use cost-volume-profit relationships | Break-even and target profit |
| Assess efficiency through variance analysis | Standard versus actual costs |
| Develop the master budget | Sales, production, cash and budgeted statements |
| Analyze relevant costs | Special orders, make or buy, keep or drop |
Key Concepts Explained
Job-Order Costing and Overhead Rates
Each job collects direct materials, direct labor and applied overhead. Overhead is applied with a predetermined rate: estimated overhead divided by an estimated allocation base.
Example: Estimated overhead is $240,000 and estimated direct labor hours are 12,000, giving $20 per hour. Job 105 uses $3,000 of materials, $1,800 of labor and 90 labor hours. Applied overhead = 90 x $20 = $1,800. Job cost = $3,000 + $1,800 + $1,800 = $6,600.
Activity-Based Costing
ABC assigns overhead using several activity cost pools, such as machine setups and quality inspections, each with its own driver. It often reveals that low-volume, complex products cost more than traditional methods suggest.
Cost-Volume-Profit
Break-even units = fixed costs / contribution margin per unit. Target profit units = (fixed costs + target profit) / contribution margin per unit.
Variance Analysis
Variances compare actual results with standards. The materials price variance = (actual price - standard price) x actual quantity. The quantity variance = (actual quantity - standard quantity allowed) x standard price.
Example: Standard: 2 kg per unit at $5 per kg. For 1,000 units, the firm used 2,100 kg bought at $4.80. Price variance = ($4.80 - $5.00) x 2,100 = $420 favorable. Quantity variance = (2,100 - 2,000) x $5 = $500 unfavorable. Cheaper material may have caused more waste, a link worth investigating.
Building the Master Budget
The master budget is a set of linked budgets, usually prepared in this order:
- Sales budget.
- Production budget (sales plus desired ending inventory minus beginning inventory).
- Direct materials, direct labor and overhead budgets.
- Selling and administrative expense budget.
- Cash budget.
- Budgeted income statement and balance sheet.
Because each schedule feeds the next, an early error flows through everything. Building it in a spreadsheet with linked cells makes checking and revising much easier.
Typical Tasks and How to Approach Them
| Task type | What it tests | How to approach it |
|---|---|---|
| Costing problems | Job, process or ABC calculations | Lay out each cost category in a clear schedule |
| CVP questions | Break-even and target profit | Find contribution margin first |
| Variance analysis | Calculation and interpretation | Label each variance favorable or unfavorable and explain a cause |
| Relevant cost decisions | Choosing what matters | Exclude sunk and unavoidable costs |
Relevant Costs in Practice
The final competency covers relevant costs for management decisions. Only future costs and revenues that differ between alternatives are relevant.
Example: A firm makes a part for $12 per unit ($7 variable, $5 allocated fixed overhead). A supplier offers it at $10. If the fixed overhead continues regardless, the relevant cost of making is $7, so buying at $10 adds $3 per unit. The decision changes only if buying frees capacity for a more profitable use.
The same logic drives special-order and keep-or-drop decisions. Always ask which costs disappear and which remain, and mention qualitative factors such as quality control and supplier reliability.
Where Students Get Stuck
- Equivalent units. In process costing, partly finished units count only for the percentage complete.
- Over- and under-applied overhead. Compare applied with actual overhead and adjust cost of goods sold.
- Variance signs. Decide favorable or unfavorable by effect on profit, not by the sign alone.
- Sunk costs in decisions. Past costs never change a future choice.
Study Tips for D101
- Make a one-page formula sheet with a worked example for each method.
- Practice the master budget once end to end in Excel.
- Work problems by hand before checking with a spreadsheet.
- Explain each answer in one sentence: what it means for a manager.
How We Help with D101
Send your problems, templates and rubric. An accounting tutor can prepare step-by-step solutions, explain methods or review your workings. For broader support, see our accounting assignment help guide.
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Frequently Asked Questions
Budgeting, cost-volume-profit analysis, job costing, process costing, activity-based costing, standard costing and differential (relevant cost) analysis.
WGU lists Principles of Accounting and Financial Accounting.
Job costing tracks costs for distinct jobs; process costing averages costs across continuous, identical production.
It assigns overhead more accurately when products use support activities in different amounts.
WGU uses objective assessments, performance assessments or both. Check your course page for the current format.
Yes, with worked problems, explanations and feedback. We do not take assessments for students.