Gross Margin
The gross margin is the difference between sales and direct production costs, divided by sales and expressed as a percentage. It shows how much of sales remains after deducting the cost of goods or services.
Net Margin
The net margin is the profit after deducting all costs, including operating costs, taxes and interest, divided by sales and expressed as a percentage. It indicates how much of the turnover actually remains as profit after all deductions.
Operating Margin
The operating margin is the difference between sales and operating costs (excluding interest and taxes), divided by sales and expressed as a percentage. It shows the Rate of Return of a company's core business.