The average person uses revenue and income in interchangeable ways. But these terms refer to very specific, and different, concepts.All calculations on a company’s income statement begin with revenue, which is found at the top of the page. It’s the cash a company generates through selling its products or providing services that stem from its primary operation, minus returns and discounts. In example, a grocery store’s revenue comes from the sale of anything found in the store. Many companies have other streams of income that come from investments or the sale of other assets. This money is not counted as revenue because it’s not produced by the company’s main business. In a financial context, income almost always refers to the bottom line, or net income. That’s the money that remains from revenue after accounting for all expenses and extra income. That includes rent, payroll and the cost of goods sold, as well as additional funds earned through investments or selling other assets.