Impact on Profit under Marginal and Absorption Costing Technique
The concept of Marginal & Absorption costing plays a significant role in the field of management accounting. The
main difference between marginal costing and absorption costing lies in how
they treat fixed manufacturing overhead costs. This difference can lead to
varying profits for a company under the two techniques, particularly when there
are changes in production volume and inventory levels. Let us discuss the
impact on profit under both techniques:
Under
marginal costing, fixed manufacturing overhead costs are treated as period
costs and are not allocated to products. Only variable manufacturing costs
(direct materials, direct labor, and variable manufacturing overhead) are
considered as part of the product cost.
Profit
is calculated as the difference between total revenue and total variable costs
(both direct and variable overhead costs).
The
closing stock value is valued at its variable production cost only (i.e.,
direct materials, direct labor, and variable overhead).
Marginal
costing provides a clearer view of the contribution margin of each product and
helps in making short-term decisions, as it isolates the impact of changing
production levels on profitability.
2.
Absorption Costing:
Under
absorption costing, both variable and fixed manufacturing overhead costs are
included in the product cost. Fixed overhead costs are absorbed into the cost
of units produced.
Profit
is calculated as the difference between total revenue and total cost of goods
sold (which includes both variable and fixed manufacturing costs).
The
closing stock value includes both variable and fixed production costs.
Absorption
costing is required for external financial reporting purposes and is often used
for inventory valuation.
Impact
on Profit:
In
periods of stable production and sales levels, both methods generally yield the
same profit result.
·
If there is an increase
in production levels and inventory builds up (closing stock increases),
absorption costing typically results in higher reported profits compared to
marginal costing. This is because fixed overhead costs get spread over more
units, reducing the cost per unit.
·
On the other hand, if
production levels decrease and inventory reduces (closing stock decreases),
absorption costing may report lower profits than marginal costing due to the
higher fixed overhead costs being allocated to fewer units.
·
If a company faces a
temporary downturn in sales and has a buildup of closing stock, absorption
costing may show higher profits compared to marginal costing, as fixed overhead
costs get absorbed into closing stock, reducing the expense in the income
statement.
In
summary, the choice between marginal costing and absorption costing can
significantly impact reported profits, especially when production levels and
inventory levels change. Companies should be aware of these differences and use
the appropriate costing method based on their reporting needs and the
decision-making context. Absorption costing is generally used for external
financial reporting, while marginal costing is useful for internal decision-making and short-term planning.
Difference
between marginal costing and absorption costing
Marginal
costing and absorption costing are two different methods of cost accounting
used to determine the cost of production, valuation of inventory, and calculation
of profit. The main difference between the two lies in the treatment of fixed
manufacturing overhead costs. Let's explore the key distinctions between
marginal costing and absorption costing:
1.
Treatment of Fixed Manufacturing Overhead:
Marginal
Costing: Under marginal costing, fixed manufacturing overhead costs are
considered as period costs and are not allocated to products. These costs are
treated as expenses in the period they are incurred, and they do not form a
part of the product cost. Only variable manufacturing costs (direct materials,
direct labor, and variable overhead) are considered as product costs.
Absorption
Costing: In absorption costing, both variable and fixed manufacturing overhead
costs are included in the product cost. Fixed overhead costs are absorbed into
the cost of units produced and are considered as part of the inventory
valuation. As a result, fixed overhead costs are recognized as expenses only
when the finished goods are sold.
2.
Inventory Valuation:
Marginal
Costing: Closing stock (ending inventory) is valued at variable production cost
only, which includes direct materials, direct labor, and variable manufacturing
overhead.
Absorption
Costing: Closing stock (ending inventory) is valued at both variable and fixed
production costs, including direct materials, direct labor, variable
manufacturing overhead, and the allocated fixed manufacturing overhead.
3.
Profit Calculation:
Marginal
Costing: Profit is calculated as the difference between total revenue and total
variable costs (both direct and variable overhead costs). Fixed manufacturing
overhead costs are not included in the cost of goods sold.
Absorption
Costing: Profit is calculated as the difference between total revenue and total
cost of goods sold, which includes both variable and fixed manufacturing costs.
4.
Decision Making:
Marginal
Costing: Marginal costing is useful for short-term decision-making and
determining the contribution margin of each product. It helps in assessing the
impact of changes in production volume on profitability.
Absorption
Costing: Absorption costing is typically used for external financial reporting
purposes and is required for inventory valuation under accounting standards. It
may not provide the most relevant information for short-term decision-making
due to the impact of fixed overhead costs on inventory valuation.
5.
Cost Behavior Analysis:
Marginal
Costing: Marginal costing segregates costs into fixed and variable components,
making it easier to analyze cost behavior and perform cost-volume-profit (CVP)
analysis.
Absorption
Costing: Absorption costing does not clearly distinguish between fixed and
variable costs within the product cost, which can make cost behavior analysis
more complex.
In
summary, the primary difference between marginal costing and absorption costing
lies in the treatment of fixed manufacturing overhead costs and the resulting
impact on inventory valuation and profit calculation. Each method has its
advantages and is suited to different purposes. Marginal costing is more
focused on short-term decision-making and cost behavior analysis, while
absorption costing is essential for external financial reporting and inventory
valuation compliance.
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