Meaning of Marginal Costing
Marginal Costing is a Cost Accounting technique that studies the relationship between cost, sales volume, and profit. It is mainly used for managerial decision-making by distinguishing variable costs from fixed costs. Under this method, only variable costs are charged to products, while fixed costs are treated as period costs and are charged against the profit of the accounting period.
Marginal Costing helps management understand how changes in sales volume, selling price, costs, and production levels affect the profit of the business.
Exam Point: Under Marginal Costing, only variable costs are charged to products, while fixed costs are treated as period costs.
Cost-Volume-Profit (CVP) Analysis
An important part of Marginal Costing is Cost-Volume-Profit (CVP) Analysis. It is the systematic study of the relationship between selling price, sales volume, production volume, costs, expenses, and profit.
CVP Analysis provides valuable information for management and helps in making business decisions quickly and accurately. According to the provided content, this analysis is useful for determining selling prices, selecting the most profitable product mix, choosing suitable marketing strategies, and evaluating how changes in costs affect profits.
In today’s competitive business environment, managers must make timely and correct decisions. Therefore, the importance of Cost-Volume-Profit Analysis continues to increase.
Exam Point: CVP Analysis studies the relationship among Cost, Volume, and Profit and supports managerial decision-making.
Objectives of Cost-Volume-Profit Analysis
Cost-Volume-Profit Analysis helps management understand the financial impact of business decisions. It assists in pricing decisions, product mix selection, marketing strategy formulation, and profit planning. It also enables managers to estimate how changes in costs or sales volume will affect the profitability of the business.
Contribution Margin
The Contribution Margin is one of the most important concepts in Marginal Costing. It represents the excess of Sales Revenue over Variable Costs.
In simple words, the contribution margin is the amount available to first cover fixed costs, and after fixed costs have been recovered, the remaining amount becomes operating profit.
Formula
Contribution Margin = Sales − Variable Costs
Exam Point: Contribution Margin = Sales − Variable Costs
Example of Contribution Margin
According to the provided content, Company X has the following income statement:
| Particulars | Amount ($) |
|---|---|
| Sales | 1,000,000 |
| Less: Variable Costs | 600,000 |
| Contribution Margin | 400,000 |
| Less: Fixed Costs | 300,000 |
| Income from Operations | 100,000 |
From the above statement:
Contribution Margin = $1,000,000 − $600,000 = $400,000
The contribution margin first covers the fixed costs of $300,000, leaving an operating income of $100,000.
This example shows that contribution is the amount available to recover fixed costs and generate profit.
Contribution Margin Ratio (Profit-Volume Ratio)
The Contribution Margin Ratio, also known as the Profit-Volume (P/V) Ratio, expresses the contribution margin as a percentage of sales.
It indicates the percentage of each sales rupee or dollar that is available to cover fixed costs and generate operating profit.
Formula
Contribution Margin Ratio = (Sales − Variable Costs) ÷ Sales
or
Contribution Margin Ratio = Contribution Margin ÷ Sales
For Company Fusion, Inc.,
Contribution Margin Ratio = ($1,000,000 − $600,000) ÷ $1,000,000
= $400,000 ÷ $1,000,000
= 40%
Exam Point: Contribution Margin Ratio = Contribution Margin ÷ Sales
Importance of Contribution Margin Ratio
The Contribution Margin Ratio helps management estimate the effect of changes in sales on operating profit.
For example, according to the provided content, if Company Fusion receives additional sales orders worth $80,000, the expected increase in operating income can be calculated using the Contribution Margin Ratio.
Increase in Operating Income = Additional Sales × Contribution Margin Ratio
= $80,000 × 40%
= $32,000
Thus, obtaining additional sales of $80,000 is expected to increase operating income by $32,000.
Exam Point: Increase in Operating Income = Additional Sales × Contribution Margin Ratio
Income Statement after Additional Sales
After receiving additional sales orders, the company’s income statement becomes:
| Particulars | Amount ($) |
|---|---|
| Sales | 1,080,000 |
| Less: Variable Costs (60%) | 648,000 |
| Contribution Margin (40%) | 432,000 |
| Less: Fixed Costs | 300,000 |
| Income from Operations | 132,000 |
The increase in operating income is:
$132,000 − $100,000 = $32,000
This confirms the calculation obtained through the Contribution Margin Ratio.
Relationship Between Variable Cost Ratio and Contribution Margin Ratio
According to the provided content, the Variable Cost Ratio is equal to:
100% − Contribution Margin Ratio
Since the Contribution Margin Ratio is 40%, the Variable Cost Ratio becomes:
100% − 40% = 60%
Therefore,
Variable Costs = Sales × 60%
For sales of $1,080,000,
Variable Costs = $1,080,000 × 60% = $648,000
Similarly,
Contribution Margin = $1,080,000 × 40% = $432,000
This confirms the figures shown in the income statement.
Exam Point: Variable Cost Ratio = 100% − Contribution Margin Ratio
Importance of Marginal Costing
Marginal Costing helps management understand the relationship between sales, costs, and profits. It supports decision-making regarding pricing, sales planning, product selection, marketing strategies, and profit forecasting. By separating variable costs from fixed costs, management can easily evaluate the financial effect of changes in production or sales volume.
Key Formulae
| Formula | Expression |
|---|---|
| Contribution Margin | Sales − Variable Costs |
| Contribution Margin Ratio (P/V Ratio) | (Sales − Variable Costs) ÷ Sales |
| Variable Cost Ratio | 100% − Contribution Margin Ratio |
| Increase in Operating Income | Additional Sales × Contribution Margin Ratio |
Key Points for Examination
Marginal Costing is a Cost Accounting technique that focuses on variable costs and treats fixed costs as period costs. It uses Cost-Volume-Profit (CVP) Analysis to study the relationship between selling price, sales volume, costs, and profit. The Contribution Margin is calculated as Sales minus Variable Costs and is used first to recover fixed costs and then generate profit. The Contribution Margin Ratio, also called the Profit-Volume (P/V) Ratio, measures the percentage of sales available to cover fixed costs and operating profit. According to the provided example, Company Fusion has a Contribution Margin Ratio of 40% and a Variable Cost Ratio of 60%. Additional operating income can be estimated by multiplying the Contribution Margin Ratio by the increase in sales.
Quick Revision Summary
Marginal Costing separates variable costs and fixed costs and helps management analyse the relationship between Cost, Volume, and Profit (CVP). The Contribution Margin = Sales − Variable Costs, while the Contribution Margin Ratio = Contribution Margin ÷ Sales. The Variable Cost Ratio = 100% − Contribution Margin Ratio. Contribution first covers fixed costs, and the remaining amount becomes profit. Marginal Costing is widely used for pricing decisions, product mix selection, profit planning, marketing decisions, and evaluating the effect of changes in sales or costs on profitability.