Net Margin: Net margin is a profitability ratio that measures the percentage of revenue that a company retains as net income after accounting for all expenses, including cost of goods sold, operating expenses, interest, and taxes.
Operating Margin: Operating margin is a profitability ratio that measures the percentage of revenue that a company retains as operating income after accounting for the cost of goods sold and operating expenses, but before interest and taxes.
Contribution Margin: Contribution margin is the difference between a product's selling price and its variable costs, which represents the amount that each unit of a product contributes to covering fixed costs and generating profit.