Revenue is an important financial term that is often used in business. This discussion will focus on understanding what revenue is and how it is calculated in simple terms.Revenue is the total amount of money a business earns from its activities. It can be calculated by subtracting the cost of goods sold from the total sales. Revenue is the top line of a business's income statement, and it is used to measure the financial performance of a business. Revenue is important because it is used to measure the profitability of a business and can be used to make decisions about the future of the business.