2. Overview of Absorption and Variable
Costing
Absorption
Costing
Variable
Costing
Direct Materials
Product
Costs
Direct Labor
Product
Costs
Variable Manufacturing Overhead
Fixed Manufacturing Overhead
Period
Costs
Variable Selling and Administrative Expenses
Period
Costs
Fixed Selling and Administrative Expenses
Muhammad Sario, Sukkur IBA
7-2
3. Unit Cost Computations
Harvey Company produces a single product
with the following information available:
Number of units produced annually
Variable costs per unit:
Direct materials, direct labor,
and variable mfg. overhead
Selling & administrative expenses
$
$
Fixed costs per year:
Manufacturing overhead
Selling & administrative expenses
$ 150,000
$ 100,000
Muhammad Sario, Sukkur IBA
25,000
10
3
7-3
4. Unit Cost Computations
Unit product cost is determined as follows:
Absorption
Costing
Direct materials, direct labor,
and variable mfg. overhead
Fixed mfg. overhead
($150,000 ÷ 25,000 units)
Unit product cost
Variable
Costing
$
10
$
10
$
6
16
$
10
Under absorption costing, all production costs, variable
and fixed, are included when determining unit product
cost. Under variable costing, only the variable
production costs are included in product costs.
Muhammad Sario, Sukkur IBA
7-4
5. Income Comparison of
Absorption and Variable Costing
Let’s assume the following additional information
for Harvey Company.
20,000 units were sold during the year at a price
of $30 each.
There is no beginning inventory.
Now, let’s compute net operating
income using both absorption
and variable costing.
Muhammad Sario, Sukkur IBA
7-5
6. Absorption Costing
Absorption Costing
Sales (20,000 × $30)
Less cost of goods sold:
Beginning inventory
$
Add COGM (25,000 × $16)
400,000
Goods available for sale
400,000
Ending inventory (5,000 × $16)
80,000
Gross margin
Less selling & admin. exp.
Variable (20,000 × $3)
$ 60,000
Fixed
100,000
Net operating income
$ 600,000
320,000
280,000
160,000
$ 120,000
Fixed manufacturing overhead deferred in
inventory is 5,000 units × $6 = $30,000.
Muhammad Sario, Sukkur IBA
7-6
7. Variable Costing
Variable
manufacturing
Variable Costing
costs only.
Sales (20,000 × $30)
Less variable expenses:
Beginning inventory
$
Add COGM (25,000 × $10)
250,000
Goods available for sale
250,000
Less ending inventory (5,000 × $10)
50,000
Variable cost of goods sold
200,000
Variable selling & administrative
expenses (20,000 × $3)
60,000
Contribution margin
Less fixed expenses:
Manufacturing overhead
$ 150,000
Selling & administrative expenses 100,000
Net operating income
Muhammad Sario, Sukkur IBA
$ 600,000
All fixed
manufacturing
overhead is
expensed.
260,000
340,000
250,000
$ 90,000
7-7
8. Comparing the Two Methods
Cost of
Goods
Sold
Ending
Inventory
Period
Expense
Absorption costing
Variable mfg. costs $ 200,000
Fixed mfg. costs
120,000
$ 320,000
$ 50,000
30,000
$ 80,000
$
Variable costing
Variable mfg. costs $ 200,000
Fixed mfg. costs
$ 200,000
$ 50,000
$ 50,000
$
Muhammad Sario, Sukkur IBA
$
-
150,000
$ 150,000
Total
$ 250,000
150,000
$ 400,000
$ 250,000
150,000
$ 400,000
7-8
9. Comparing the Two Methods
We can reconcile the difference between
absorption and variable income as follows:
Variable costing net operating income
$ 90,000
Add: Fixed mfg. overhead costs
deferred in inventory
(5,000 units × $6 per unit)
30,000
Absorption costing net operating income $ 120,000
Fixed mfg. overhead
$150,000
=
= $6 per unit
Units produced
25,000 units
Muhammad Sario, Sukkur IBA
7-9
10. Extended Comparisons of Income Data
Harvey Company – Year Two
Number of units produced
Number of units sold
Units in beginning inventory
Unit sales price
Variable costs per unit:
Direct materials, direct labor
variable mfg. overhead
Selling & administrative
expenses
Fixed costs per year:
Manufacturing overhead
Selling & administrative
expenses
Muhammad Sario, Sukkur IBA
25,000
30,000
5,000
$
30
$
10
$
3
$ 150,000
$ 100,000
7-10
11. Unit Cost Computations
Absorption
Costing
Direct materials, direct labor,
and variable mfg. overhead
Fixed mfg. overhead
($150,000 ÷ 25,000 units)
Unit product cost
Variable
Costing
$
10
$
10
$
6
16
$
10
Since the variable costs per unit, total fixed costs,
and the number of units produced remained
unchanged, the unit cost computations also
remain unchanged.
Muhammad Sario, Sukkur IBA
7-11
12. Absorption Costing
Unit product
Sales (30,000 × $30)
Less cost of goods sold:
Beg. inventory (5,000 × $16)
Add COGM (25,000 × $16)
Goods available for sale
Less ending inventory
Gross margin
Less selling & admin. exp.
Variable (30,000 × $3)
Fixed
Net operating income
Absorption Costing
cost.
$ 900,000
$ 80,000
400,000
480,000
-
$ 90,000
100,000
480,000
420,000
190,000
$ 230,000
Fixed manufacturing overhead released from
inventory is 5,000 units × $6 = $30,000.
Muhammad Sario, Sukkur IBA
7-12
13. Variable Costing
Variable
manufacturing
costs only. Variable Costing
Sales (30,000 × $30)
$ 900,000
Less variable expenses:
Beg. inventory (5,000 × $10)
$ 50,000
Add COGM (25,000 × $10)
250,000
All fixed
Goods available for sale
300,000
manufacturing
Less ending inventory
overhead is
Variable cost of goods sold
300,000
expensed.
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 operating income
$ 260,000
Muhammad Sario, Sukkur IBA
7-13
14. Comparing the Two Methods
We can reconcile the difference between
absorption and variable income as follows:
Variable costing net operating income
$ 260,000
Deduct: Fixed manufacturing overhead
costs released from inventory
(5,000 units × $6 per unit)
30,000
Absorption costing net operating income $ 230,000
Fixed mfg. overhead
$150,000
=
= $6 per unit
Units produced
25,000 units
Muhammad Sario, Sukkur IBA
7-14
15. Comparing the Two Methods
Costing Method
Absorption
Variable
1st Period
$ 120,000
90,000
Muhammad Sario, Sukkur IBA
2nd Period
$ 230,000
260,000
Total
$ 350,000
350,000
7-15
16. Summary of Key Insights
Relation between
production
and sales
Units produced
=
Units sold
Units produced
>
Units sold
Units produced
<
Units sold
Muhammad Sario, Sukkur IBA
Effect
on
iniventories
No change
In
inventories
Inventories
Increase
Inventories
decrease
Relation between
variable and
absorption income
Absorption
=
Variable
Absorption
>
Variable
Absorption
<
Variable
7-16
17. CVP Analysis, Decision Making
and Absorption costing
Absorption costing does not dovetail with CVP analysis,
nor does it support decision making. It treats fixed
manufacturing overhead as a variable cost. It assigns per
unit fixed manufacturing overhead costs to production.
Treating fixed manufacturing overhead as a
Treating
overhead as
variable cost can:
• Lead to faulty pricing decisions and faulty
• Lead to faulty
and faulty
keep-or-drop decisions.
decisions.
Assigning per unit fixed manufacturing overhead
per unit
overhead
costs to production can:
to
can:
• Potentially produce positive net operating income
even when the number of units sold is less than
the breakeven point.
Muhammad Sario, Sukkur IBA
7-17
18. External Reporting and Income Taxes
To conform to
To conform to
GAAP requirements,
GAAP requirements,
absorption costing must be used for
absorption costing must be used for
external financial reports in the
external financial reports in the
Under the Tax
Under the Tax
United States.
United States.
Reform Act of 1986,
Reform Act of 1986,
absorption costing must be
absorption costing must be
used when filling out
used when filling out
Since top executives
Since top executives
income tax returns.
income tax returns.
are typically evaluated based on
are typically evaluated based on
earnings reported to shareholders
earnings reported to shareholders
in external reports, they may feel that
in external reports, they may feel that
decisions should be based on
decisions should be based on
absorption costing data.
absorption costing data.
Muhammad Sario, Sukkur IBA
7-18
19. Advantages of Variable Costing
and the Contribution Approach
Management finds
it more useful.
Advantages
Impact of fixed
costs on profits
emphasized.
Muhammad Sario, Sukkur IBA
Consistent with
CVP analysis.
Net operating income
is closer to
net cash flow.
Consistent with standard
costs and flexible budgeting.
Easier to estimate profitability
of products and segments.
Profit is not affected by
changes in inventories.
7-19
20. Impact of Lean Production
When companies use Lean Production . . .
Production
tends to equal
sales . . .
So, the difference between variable and
absorption income tends to disappear.
Muhammad Sario, Sukkur IBA
7-20
Chapter 7: Variable Costing: A Tool for Management.
Two general approaches are used for valuing inventories and cost of goods sold. One approach, called absorption costing, is generally used for external reporting purposes. The other approach, called variable costing, is preferred by some managers for internal decision making and must be used when an income statement is prepared in the contribution format. This chapter shows how these two methods differ from each other.
Absorption costing (also called the full cost method) treats all costs of production as product costs, regardless of whether they are variable or fixed. Since no distinction is made between variable and fixed costs, absorption costing is not well suited for CVP computations. Under absorption costing, the cost of a unit of product consists of direct materials, direct labor, and both variable and fixed overhead. Variable and fixed selling and administrative expenses are treated as period costs and are deducted from revenue as incurred.
Variable costing (also called direct costing or marginal costing) treats only those costs of production that vary with output as product costs. This approach dovetails with the contribution approach income statement and supports CVP analysis because of its emphasis on separating variable and fixed costs. The cost of a unit of product consists of direct materials, direct labor, and variable overhead. Fixed manufacturing overhead, and both variable and fixed selling and administrative expenses are treated as period costs and deducted from revenue as incurred.
Think about the impact of each method on inventory values, and then answer the following question.
Harvey Company produces 25,000 units of a single product. Variable manufacturing costs total $10 per unit. Variable selling and administrative expenses are $3 per unit. Fixed manufacturing overhead for the year is $150,000 and fixed selling and administrative expenses for the year are $100,000.
The unit product costs under absorption and variable costing would be $16 and $10, respectively. Under absorption costing, all production costs, variable and fixed, are included when determining unit product cost. Under variable costing, only the variable production costs are included in product costs.
We need some additional information to allow us to prepare income statements for Harvey Company:
20,000 units were sold during the year.
The selling price per unit is $30.
There is no beginning inventory.
Now let’s prepare income statements for Harvey Company. We will start with an absorption income statement.
Part I.
Harvey sold only 20,000 of the 25,000 units produced, leaving 5,000 units in ending inventory. At a sales price of $30 per unit, sales revenue for the 20,000 units sold is $600,000. At a unit product cost of $16, cost of goods sold for the 20,000 units sold is $320,000. Subtracting cost of goods sold from sales, we find the gross margin of $280,000. After subtracting selling and administrative expenses from the gross margin, we see that net operating income is $120,000.
Part II.
Fixed manufacturing overhead deferred in inventory, as a result of the 5,000 unsold units at $6 of fixed overhead per unit, is $30,000.
Now let’s examine a variable cost income statement. Notice that this is a contribution format statement. First, we subtract all variable expenses from sales to get contribution margin. At a product cost of $10 per unit, the variable cost of goods sold for 20,000 units is $200,000. The next variable expense is the variable selling and administrative expense. After computing contribution margin, we subtract fixed expenses to get the $90,000 net operating income. Note that all $150,000 of fixed manufacturing overhead is expensed in the current period.
Under absorption costing, $120,000 of fixed manufacturing overhead is included in cost of goods sold and $30,000 is deferred in ending inventory as an asset on the balance sheet. Under variable costing, the entire $150,000 of fixed manufacturing overhead is treated as a period expense.
The variable costing ending inventory is $30,000 less than absorption costing, thus explaining the difference in net operating income between the two methods.
The difference in net operating income between the two methods ($30,000) can also be reconciled by multiplying the number of units in ending inventory (5,000 units) by the fixed manufacturing overhead per unit ($6) that is deferred in ending inventory under absorption costing.
In the second year, Harvey Company sells 30,000 units. The selling price per unit, variable costs per unit, total fixed costs, and number of units produced remain unchanged. Five thousand units are in beginning inventory, left from last year.
Since the variable costs per unit, total fixed costs, and the number of units produced remained unchanged, the unit cost computations also remain unchanged.
Part I.
Of the 30,000 units sold in the second year, 25,000 units were produced in the second year and 5,000 units came from beginning inventory. The $30,000 of fixed manufacturing overhead deferred into inventory in the first year is released from inventory this year as part of the $16 unit product cost. Selling and administrative expenses are deducted from gross margin to obtain the net operating income of $230,000.
Part II.
Fixed manufacturing overhead is released from inventory as a result of the 5,000 units sold in the second year that were produced in the first year. The amount released is $30,000 (5,000 units at $6 of fixed overhead per unit).
Now, let’s examine a variable cost income statement for the second year. Again, notice that this is a contribution format statement. At a product cost of $10 per unit, the variable cost of goods sold for 30,000 units is $300,000.
After computing contribution margin, we subtract fixed expenses to get the $260,000 net operating income. Note that all $150,000 of fixed manufacturing overhead is expensed in the current period.
The difference in net operating income between the two methods ($30,000) can be reconciled by multiplying the number of units in beginning inventory (5,000 units) by the fixed manufacturing overhead per unit ($6) that is released from beginning inventory under absorption costing.
Across the two-year time frame, both methods reported the same total net operating income ($350,000). This is because over an extended period of time sales cannot exceed production, nor can production much exceed sales. The shorter the time period, the more the net operating income figures will tend to differ.
On your screen is a summary of what we have observed from the Harvey Company’s two years:
When units produced equal units sold, the two methods report the same net operating income.
When units produced are greater units sold, as in year 1 for Harvey, absorption income is greater than variable costing income.
When units produced are less than units sold, as in year 2 for Harvey, absorption costing income is less than variable costing income.
Absorption costing does not dovetail with CVP analysis, nor does it support decision making. It treats fixed manufacturing overhead as a variable cost. This can lead to faulty pricing decisions and faulty keep-or-drop decisions. It also assigns per unit fixed manufacturing overhead costs to production. This can potentially produce positive net operating income even when the number of units sold is less than the breakeven point.
Practically speaking, absorption costing is required for external reports in the United States. Under the Tax Reform Act of 1986, a form of absorption costing must be used when filling out income tax forms. Since top executives are typically evaluated based on earnings reported to shareholders in external reports, they may feel that decisions should be based on absorption costing data.
The advantages of variable costing and the contribution approach include:
The data required for CVP analysis can be taken directly from a contribution format income statement.
Profits move in the same direction as sales, assuming other things remain the same.
Managers often assume that unit product costs are variable costs. Under variable costing, this assumption is true.
Fixed costs appear explicitly on a contribution format income statement; thus, the impact of fixed costs on profits is emphasized.
Variable costing data make it easier to estimate the profitability of products, customers, and other business segments.
Variable costing ties in with cost control methods, such as standard costs and flexible budgeting.
Variable costing net operating income is closer to net cash flow than absorption costing net operating income.
When companies use Lean Production, the goal is to eliminate finished goods inventories and reduce work in process inventory to almost nothing. This causes absorption costing net operating income to essentially move in the same direction as sales. Therefore, the difference between absorption costing and variable costing income tends to disappear.