How is net income defined?

Net income is defined as the amount of profit that remains after all expenses, including taxes, have been subtracted from total revenues. This figure represents the company's profitability during a specific period and is a critical indicator of financial health. It reflects the effectiveness of a company's management in controlling costs and maximizing revenues.

In contrast, total revenue before expenses would only tell you how much money the company brought in, without accounting for any costs associated with generating that revenue. The gross profit before tax provides information on profitability after direct costs of goods sold are deducted, but it does not consider operating expenses and taxes. Lastly, revenue generated from investments refers specifically to income from assets or investments, rather than overall business operations. Therefore, the most accurate definition of net income is indeed the revenue remaining after all costs have been deducted.