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4. Introduction
Before we allocate all manufacturing costs
to products regardless of whether they are
fixed or variable. This approach is known
as absorption costing/full costing
However, only variable costs are relevant
to decision-making. This is known as
marginal costing/variable costing
4
6. Absorption costing
It is costing system which treats all
manufacturing costs including both the
fixed and variable costs as product costs
6
7. Marginal costing
It is a costing system which treats only the
variable manufacturing costs as product
costs. The fixed manufacturing overheads
are regarded as period cost
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8. Absorption Costing
Cost
Manufacturing cost Non-manufacturing cost
Direct Direct Overheads
Materials Labour Period cost
Finished goods Cost of goods sold Profit and loss account
Marginal Costing
Cost
Manufacturing cost Non-manufacturing cost
Direct Direct Variable Fixed
Materials Labour Overheads overhead Period cost
Finished goods Cost of goods sold Profit and loss account
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10. Trading and profit ans loss account
Absorption costing Marginal costing
$ $
Sales X Sales X
Less: Cost of goods sold X Less: Variable cost of
Goods sold X
Gross profit X Product contribution margin X
Less: Expenses Less: variable non- manufacturing
Selling expenses X expenses
Admin. expenses X Variable selling expenses X
Other expenses X X Variable admin. expenses X
Other variable expenses X
Total contribution expenses X
Variable and fixed manufacturing
Less: Expenses
Fixed selling expenses X
Fixed admin. expenses X
Other fixed expenses X
Net Profit X Net Profit X
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12. A company started its business in 2005. The following information
Was available for January to March 2005 for the company that produced
A single product:
$
Selling price pre unit 100
Direct materials per unit 20
Direct Labour per unit 10
Fixed factory overhead per month 30000
Variable factory overhead per unit 5
Fixed selling overheads 1000
Variable selling overheads per unit 4
Budgeted activity was expected to be 1000 units each month
Production and sales for each month were as follows:
Jan Feb March
Unit sold 1000 800 1100
Unit produced 1000 1300 900
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13. Required:
Prepare absorption and marginal costing
statements for the three months
13
17. January February March
$ $ $
Sales 100000 80000 110000
Less: Variable cost of good
sold ($35) 35000 28000 385500
Product contribution margin 65000 52000 71500
Less: Variable selling overhead4000 3200 4400
Total contribution margin 61000 48800 67100
Less: Fixed Expenses
Fixed factory overhead 30000 30000 30000
Fixed selling overheads 1000 1000 1000
Net profit 30000 32800 30100
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18. Wk1:
Standard fixed overhead rate
= Budgeted total fixed factory overheads
Budgeted number of units produced
= $30000
1000 units
= $30 units
Wk 2:
Production cost per unit under absorption costing:
$
Direct materials 20
Direct labour 10
Fixed factory overhead absorbed 30
Variable factory overheads 5
65
Back
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19. Wk 3:
(Under-)/Over-absorption of fixed factory overheads:
January February March
$ $ $
Fixed overhead 30000 39000 27000
Fixed overheads incurred 30000 30000 30000
0 9000 (3000)
1000*$30 1300*$30 900*$30
Wk 4: No fixed factory overhead
Variable production cost per unit under marginal costing:
$
Direct materials 20
Direct labour 10
Variable factory overhead 5
Back 35 19
21. Absorption costing Marginal costing
Treatment for Fixed Fixed manufacturing
fixed manufacturing overhead are treated
manufacturing overheads are as period costs. It is
overheads treated as product believed that only the
costing. It is variable costs are
believed that relevant to decision-
products cannot be making.
produced without Fixed manufacturing
the resources overheads will be
provided by fixed incurred regardless
manufacturing there is production or
overheads not
21
22. Absorption costing Marginal costing
Value of High value of Lower value of
closing stock closing stock will be closing stock that
obtained as some included the variable
factory overheads cost only
are included as
product costs and
carried forward as
closing stock
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23. Absorption costing Marginal costing
Reported If the production = Sales, AC profit = MC Profit
profit
If Production > Sales, AC profit > MC profit
As some factory overhead will be deferred as
product costs under the absorption costing
If Production < Sales, AC profit < MC profit
As the previously deferred factory overhead
will be released and charged as cost of goods
sold
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25. Compliance with the generally accepted
accounting principles
Importance of fixed overheads for production
Avoidance of fictitious profit or loss
During the period of high sales, the production is
small than the sales, a smaller number of fixed
manufacturing overheads are charged and a higher
net profit will be obtained under marginal costing
Absorption costing is better in avoiding the
fluctuation of profit being reported in marginal
costing
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27. More relevance to decision-making
Avoidance of profit manipulation
Marginal costing can avoid profit manipulation by
adjusting the stock level
Consideration given to fixed cost
In fact, marginal costing does not ignore fixed costs
in setting the selling price. On the contrary, it
provides useful information for break-even analysis
that indicates whether fixed costs can be converted
with the change in sales volume
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29. Definition
Breakeven analysis is also known as cost-
volume profit analysis
Breakeven analysis is the study of the
relationship between selling prices, sales
volumes, fixed costs, variable costs and
profits at various levels of activity
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30. Application
Breakeven analysis can be used to
determine a company’s breakeven point
(BEP)
Breakeven point is a level of activity at
which the total revenue is equal to the total
costs
At this level, the company makes no profit
30
31. Assumption of breakeven point
analysis
Relevant range
The relevant range is the range of an activity over
which the fixed cost will remain fixed in total and the
variable cost per unit will remain constant
Fixed cost
Total fixed cost are assumed to be constant in total
Variable cost
Total variable cost will increase with increasing
number of units produced
31
32. Sales revenue
The total revenue will increase with the
increasing number of units produced
32
33. Cost $
Total cost
Variable cost
Fixed cost
Sales (units)
Total Cost/Revenue $
Sales revenue
Profit
Total cost
BEP Sales (units) 33
37. Calculation method
Contribution is defined as the excess of
sales revenue over the variable costs
The total contribution is equal to total fixed
cost
37
38. Formula
Breakeven point
Fixed cost
=
Contribution per unit
Sales revenue at breakeven point
= Breakeven point *selling price
38
39. Alternative method:
Sales revenue at breakeven point
Contribution required to breakeven
=
Contribution to sales ratio Contribution per unit
Selling price per unit
Breakeven point in units
Sales revenue at breakeven point
=
Selling price
39
40. Example
Selling price per unit $12
Variable cost per unit $3
Fixed costs $45000
Required:
Compute the breakeven point
40
41. Breakeven point in units = Fixed costs
Contribution per unit
= $45000
$12-$3
= 5000 units
Sales revenue at breakeven point = $12 * 5000 = $60000
41
42. Alternative method
Contribution to sales ratio $9 /$12 *100% = 75%
Sales revenue at breakeven point
= Contribution required to break even
Contribution to sales ratio
= $45000
75%
= $60000
Breakeven point in units = $60000/$12 = 5000 units
42
44. Formula
No. of units at target profit
Fixed cost + Target profit
=
Contribution per unit
Required sales revenue
Fixed cost + Target profit
=
Contribution to sales ratio
44
45. Example
Selling price per unit $12
Variable cost per unit $3
Fixed costs $45000
Target profit $18000
Required:
Compute the sales volume required to achieve
the target profit
45
46. No. of units at target profit
Fixed cost + Target profit
=
Contribution per unit
$45000 + $18000
=
$12 - $3
= 7000 units
Required to sales revenue = $12 *7000
= $84000
46
47. Alternative method
Required sales revenue
Fixed cost + Target profit
=
Contribution to sales ratio
$45000 + $18000
=
75%
= $84000
Units sold at target profit = $84000 /$12 = 7000 units
47
49. Margin of safety
Margin of safety is a measure of amount by
which the sales may decrease before a
company suffers a loss.
This can be expressed as a number of units
or a percentage of sales
49
50. Formula
Margin of safety
= Budget sales level – breakeven sales level
Margin of safety
= Margin of safety *100%
Budget sales level
50
52. Example
The breakeven sales level is at 5000 units.
The company sets the target profit at
$18000 and the budget sales level at 7000
units
Required:
Calculate the margin of safety in units and
express it as a percentage of the budgeted
sales revenue
52
53. Margin of safety
= Budget sales level – breakeven sales level
= 7000 units – 5000 units
= 2000 units
Margin of safety
= Margin of safety *100 %
Budget sales level
= 2000 *100 %
7000
= 28.6%
The margin of safety indicates that the actual sales can fall by
2000 units or 28.6% from the budgeted level before losses are
incurred.
53
55. Example
Selling price per unit $12
Variable price per unit $3
Fixed costs $45000
Current profit $18000
55
56. If the selling prices is raised from $12 to
$13, the minimum volume of sales required
to maintain the current profit will be:
Fixed cost + Target profit
Contribution to sales ratio
$45000 + $18000
=
$13 - $3
= 6300 units
56
57. If the fixed cost fall by $5000 but the
variable costs rise to $4 per unit, the
minimum volume of sales required to
maintain the current profit will be:
Fixed cost + Target profit
Contribution to sales ratio
= $40000 + $18000
$12 - $4
= 7250 units
57
59. Limitations of breakeven analysis
Breakeven analysis assumes that fixed
cost, variable costs and sales revenue
behave in linear manner. However, some
overhead costs may be stepped in nature.
The straight sales revenue line and total
cost line tent to curve beyond certain level
of production
59
60. It is assumed that all production is sold.
The breakeven chart does not take the
changes in stock level into account
Breakeven analysis can provide
information for small and relatively simple
companies that produce same product. It is
not useful for the companies producing
multiple products
60
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