Variable Costing: A Tool for · PDF fileExplain how variable costing differs from absorption...
Transcript of Variable Costing: A Tool for · PDF fileExplain how variable costing differs from absorption...
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Variable Costing:A Tool for Management
Chapter
7
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LEARNING OBJECTIVES
1. Explain how variable costing differs fromabsorption costing and compute the unitproduct cost under each method.
2. Describe how fixed manufacturing overheadcosts are deferred in inventory and releasedfrom inventory under absorption costing.
3. Prepare income statements using bothvariable and absorption costing, and reconcilethe two net income figures.
After studying this chapter, you should be able to:
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LEARNING OBJECTIVES
4. Explain the effect of changes in production onthe net income reported under both variableand absorption costing.
5. Explain the advantages and limitations of boththe variable and absorption costing methods.
6. Explain how the use of JIT reduces thedifference in net income reported under thevariable and absorption costing methods.
After studying this chapter, you should be able to:
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Overview of Absorption andVariable Costing
The only cost of driving my caron a 200 mile trip today is
$12 for gasoline.
VariableCosting
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Overview of Absorption andVariable Costing
No! You must consider these costs too!
AbsorptionCosting
Cost Per month Per day
Car payment 300.00$ 10.00$
Insurance 60.00 2.00
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Overview of Absorption andVariable Costing
Your wrong. I have the carpayment and the
insurance payment even ifI do not make the trip.
VariableCosting
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Overview of Absorption andVariable Costing
Who’s right?How should we treat the carpayment and the insurance?
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Absorption Costing
Variable Costing
Direct materialsDirect labour Product costs
Product costs Variable mfg. overhead
Fixed mfg. overheadPeriod costs
Period costs Selling & admin. exp.
Overview of Absorption andVariable Costing
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Let’s put some numbers to theissue and see if it will
sharpen our understanding.
Overview of Absorption andVariable Costing
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Harvey Co. produces a single product withthe following information available:
Number of units produced annually 25,000 Variable costs per unit:
Direct materials, direct labour, and variable mfg. overhead 10$ Selling & administrative expenses 3$
Fixed costs per year:Manufacturing overhead 150,000$ Selling & administrative expenses 100,000$
Unit Cost Computations
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Unit product cost is determined as follows:
Selling and administrative expenses arealways treated as period expenses and
deducted from revenue.
Absorption Costing
Variable Costing
Direct materials, direct labour, and variable mfg. overhead 10$ 10$ Fixed mfg. overhead ($150,000 ÷ 25,000 units) 6 - Unit product cost 16$ 10$
Unit Cost Computations
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Absorption CostingSales (20,000 × $30) 600,000$Less cost of goods sold: Beginning inventory -$ Add COGM (25,000 × $16) 400,000 Goods availa ble for sale 400,000 Ending inventory (5,000 × $16) 80,000 320,000 Gross margin 280,000 Less se lling & admin. e xp. Varia ble FixedNet income
Harvey Co. had no beginning inventory, produced25,000 units and sold 20,000 units this year.
Income Comparison of Absorptionand Variable Costing
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Harvey Co. had no beginning inventory, produced25,000 units and sold 20,000 units this year.
Absorption CostingSales (20,000 × $30) 600,000$Less cost of goods sold: Beginning inventory -$ Add COGM (25,000 × $16) 400,000 Goods availa ble for sale 400,000 Ending inventory (5,000 × $16) 80,000 320,000 Gross margin 280,000 Less se lling & admin. e xp. Varia ble (20,000 × $3) 60,000$ Fixed 100,000 160,000 Net income 120,000$
Income Comparison of Absorptionand Variable Costing
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Variable CostingSales (20,000 × $30) 600,000$ Less variable expenses: Beginning inventory -$ Add COGM (25,000 × $10) 250,000 Goods available for sale 250,000 Ending inventory (5,000 × $10) 50,000 Variable cost of goods sold 200,000 Variable selling & administrative expenses (20,000 × $3) 60,000 260,000 Contribution margin 340,000 Less fixed expenses: Manufacturing overhead 150,000$ Selling & administrative expenses 100,000 250,000 Net income 90,000$
Now let’s look at variable costing by Harvey Co.
Income Comparison of Absorptionand Variable Costing
Variablecostsonly.
All fixedmanufacturing
overhead isexpensed.
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Cost of Goods Sold
Ending Inventory
Period Expense Total
Absorption costing Variable mfg. costs 200,000$ 50,000$ Fixed mfg. costs 120,000 30,000
320,000$ 80,000$
Variable costing Variable mfg. costs 200,000$ 50,000$ Fixed mfg. costs - -
200,000$ 50,000$
Let’s compare the methods.
Income Comparison of Absorptionand Variable Costing
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Cost of Goods Sold
Ending Inventory
Period Expense Total
Absorption costing Variable mfg. costs 200,000$ 50,000$ -$ 250,000$ Fixed mfg. costs 120,000 30,000 - 150,000
320,000$ 80,000$ -$ 400,000$
Variable costing Variable mfg. costs 200,000$ 50,000$ -$ 250,000$ Fixed mfg. costs - - 150,000 150,000
200,000$ 50,000$ 150,000$ 400,000$
Let’s compare the methods.
Income Comparison of Absorptionand Variable Costing
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Reconciliation
Variable costing net income 90,000$ Add: Fixed mfg. overhead costs deferred in inventory (5,000 units × $6 per unit) 30,000 Absorption costing net income 120,000$
Fixed mfg. overhead $150,000 Units produced 25,000
= = $6.00 per unit
We can reconcile the difference betweenabsorption and variable income as follows:
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Extending the Example
Let’s look at thesecond yearof operations
for HarveyCompany.
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Harvey Co. Year 2
In its second year of operations, Harvey Co.started with an inventory of 5,000 units,
produced 25,000 units and sold 30,000 units.Number of units produced annually 25,000 Variable costs per unit:
Direct materials, direct labor variable mfg. overhead 10$ Selling & administrative expenses 3$
Fixed costs per year:Manufacturing overhead 150,000$ Selling & administrative expenses 100,000$
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Harvey Co. Year 2
Unit product cost is determined as follows:
No change in Harvey’scost structure.
Absorption Costing
Variable Costing
Direct materials, direct labor, and variable mfg. overhead 10$ 10$ Fixed mfg. overhead ($150,000 ÷ 25,000 units) 6 - Unit product cost 6$ 10$
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Harvey Co. Year 2
Now let’s look at Harvey’s income statementassuming absorption costing is used.
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Absorption CostingSales (30,000 × $30) 900,000$ Less cost of goods sold: Beg. inventory (5,000 × $16) 80,000$ Add COGM (25,000 × $16) 400,000 Goods available for sale 480,000 Ending inventory - 480,000 Gross margin 420,000 Less selling & admin. exp. Variable (30,000 × $3) 90,000$ Fixed 100,000 190,000 Net income 230,000$
Harvey Co. Year 2
These are the 25,000 unitsproduced in the current period.
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Harvey Co. Year 2
Next, we’ll look at Harvey’s income statementassuming is used.
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Variable CostingSales (30,000 × $30) 900,000$ Less variable expenses: Beg. inventory (5,000 × $10) 50,000$ Add COGM (25,000 × $10) 250,000 Goods available for sale 300,000 Ending inventory - Variable cost of goods sold 300,000 Variable selling & administrative expenses (30,000 × $3) 90,000 390,000 Contribution margin 510,000 Less fixed expenses: Manufacturing overhead 150,000$ Selling & administrative expenses 100,000 250,000 Net income 260,000$
Harvey Co. Year 2Variable
costsonly.
All fixedmanufacturing
overhead isexpensed.
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Summary
Income Comparison
Costing Method 1st Period 2nd Period TotalAbsorption 120,000$ 230,000$ 350,000$ Variable 90,000 260,000 350,000
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SummaryRela tion between Effect Rela tion between
production on variable and
Year and sa les iniventory absorption incomeInventory Absorption
1st Production > Sales increases by >
year 25,000 > 20,000 5,000 units. Variable Inventory Absorption
2nd Production < Sales decreases <
year 25,000 < 30,000 to zero. Variable
Both Absorption
years Production = Sales No change =
combined 50,000 = 50,000 Variable
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Advantages of the ContributionApproach
Advantages
Management finds it easy to understand.
Consistent withCVP analysis.
Net income is closerto net cash flow.
Profit is not affected bychanges in inventories.
Impact of fixedcosts on profitsemphasized.
Consistent with standardcosts and flexible budgeting.
Easier to estimate profitabilityof products and segments.
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Variable versus Absorption Costing
Fixed costs arenot really the costs
of any particularproduct.
All manufacturing costsmust be assigned toproducts to properly
match revenues and costs.
AbsorptionCosting
VariableCosting
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Variable versus Absorption Costing
Amortization, taxes,insurance and salariesare just as essential to
products as variable costs.
AbsorptionCosting
VariableCosting
These are capacitycosts and will be
incurred if nothingis produced.
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I guess we won’t besolving this controversy
today!
Variable versus Absorption Costing
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Impact of JIT Inventory Methods
In a JIT inventory system . . .
Productiontends to equalsales . . .
So, the difference between variable andabsorption income tends to disappear.
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End of Chapter 7