Answer: To prepare the income statement under variable costing, we need to separate the variable and fixed costs from the total cost of goods sold and selling and administrative expenses. Variable costing treats only the variable costs as product costs and considers fixed costs as period costs.
Given the following information:
Sales: 80,000 units × $50 per unit = $4,000,000
Direct materials: $4 per unit
Direct labor: $15 per unit
Variable overhead: $4 per unit
Fixed overhead: $700,000 / 100,000 units = $7 per unit
Variable selling and administrative expenses: $2.25 per unit
Fixed selling and administrative expenses: $450,000
Now, let's calculate the cost of goods sold and selling and administrative expenses under variable costing:
Cost of Goods Sold:
Variable cost of goods sold = (Direct materials + Direct labor + Variable overhead) × Number of units sold
Variable cost of goods sold = ($4 + $15 + $4) × 80,000 units = $2,600,000
Fixed cost of goods sold = Fixed overhead × Number of units sold
Fixed cost of goods sold = $7 × 80,000 units = $560,000
Total cost of goods sold = Variable cost of goods sold + Fixed cost of goods sold
Total cost of goods sold = $2,600,000 + $560,000 = $3,160,000
Selling and Administrative Expenses:
Variable selling and administrative expenses = Variable selling and administrative expenses per unit × Number of units sold
Variable selling and administrative expenses = $2.25 × 80,000 units = $180,000
Fixed selling and administrative expenses = Fixed selling and administrative expenses
Fixed selling and administrative expenses = $450,000
Total selling and administrative expenses = Variable selling and administrative expenses + Fixed selling and administrative expenses
Total selling and administrative expenses = $180,000 + $450,000 = $630,000
Now, we can prepare the income statement under variable costing:
Income Statement (Variable Costing)
Sales
Cost of goods sold
Gross profit
Selling and administrative expenses
Income
$4,000,000
$3,160,000
$840,000
$630,000
$210,000
Therefore, the income statement under variable costing shows a gross profit of $840,000 and a net income of $210,000.