Cost behavior analysis is essential for managers to make informed decisions regarding production and profitability.
Key areas to analyze include:
Cost-Volume-Profit Analysis: Understand how changes in costs, volume, and pricing affect profit. This includes determining:
Breakeven point: The sales volume needed to cover costs.
Changes in income due to new production methods or variations in sales price or volume.
Impact of changes in product sales mix on overall income.
Fixed Costs:
These costs remain constant regardless of production levels.
Examples include interest on long-term debt, rent, and insurance.
Variable Costs:
These costs fluctuate directly with production volume.
Examples: Direct labor costs increase as more hours are worked to produce additional products.
Mixed Costs:
Contain both fixed and variable components, e.g., utility costs that have a base fee plus usage charge.
Stepwise Costs:
Increase in steps rather than continuously; for example, labor costs that rise after reaching a certain production threshold.
Direct labor costs may remain stable until a specific production level is reached, at which point they rise significantly.
Tools for Analysis:
Scatter Diagram: Visual representation to track cost behavior over time based on production levels.
High-Low Method: Utilizes the highest and lowest production costs to estimate variable cost per unit:
Formula: (Cost at highest volume - Cost at lowest volume) / (Highest volume - Lowest volume)
Regression Analysis: A more complex statistical method to determine cost relationships, though often less critical for basic analysis.
Defined as the difference between selling price and variable cost.
Contribution Margin Per Unit:
Formula: Selling price per unit - Variable cost per unit.
Contribution Margin Ratio:
Formula: Contribution margin per unit / Selling price per unit.
The contribution margin assists in breakeven analysis and profitability determination.
Determines the number of units that must be sold to cover total fixed and variable costs:
Breakeven in Units:
Formula: Fixed costs / Contribution margin per unit
Breakeven in Dollars:
Formula: Fixed costs / Contribution margin ratio
Example calculations:
If fixed costs are $24,000 and the contribution margin per unit is $30, breakeven units would be 800.
If the contribution margin ratio is 30%, breakeven in dollars would be $80,000.
Factors that can lead to revised breakeven points include:
Fluctuations in sales prices or variable costs.
Changes in fixed costs (e.g., new equipment, increased rent).
Margin of Safety: Measures how much sales can drop before breakeven is reached:
Formula: Expected sales - Breakeven sales.
To achieve target income, the calculation incorporates:
Formula: (Fixed Costs + Target Income) / Contribution Margin Ratio
Understanding target income helps set realistic sales goals and pricing strategies.
For companies with multiple products, it's important to calculate:
Weighted average contribution margin based on sales mix percentages of various products.
Integration of contribution margins into decision-making helps identify profit potential and pricing strategies.
Managers must be well-versed in how to identify, measure, and analyze costs to make strategic financial decisions.
Understanding operational leverage can help predict how changes in sales will affect net income.