Contribution Margin

 The **contribution margin** is a financial metric that represents the difference between sales revenue and variable costs. It shows how much revenue is available to cover fixed costs after covering variable costs. The contribution margin can be expressed as a total, per unit, or as a percentage. 

### Formula:

\[

Contribution\: Margin = Sales\: Revenue - Variable\: Costs

\]

To calculate the contribution margin ratio, divide the contribution margin by sales revenue:

\[

Contribution\: Margin\: Ratio = \frac{Contribution\: Margin}{Sales\: Revenue}

\]

### Uses:

1. **Profitability**: It helps determine the profitability of products or services.

2. **Decision-Making**: The contribution margin informs pricing, production decisions, and cost management strategies.

3. **Break-Even Analysis**: It helps in calculating the break-even point, where total revenue equals total costs.

A higher contribution margin indicates a company can cover its fixed costs more efficiently and generate profit after those costs are covered.