Net income (NI) is the measure of an individual’s or an organization’s financial performance, and it is the difference between total revenues and total expenses. In order to calculate net income, revenues are subtracted from company costs including expenses, interest, and taxes. Net income is imperative for months-end, quarter-end, and yearly calculations in order to evaluate an organization’s profitability; moreover, investors and analysts use net income to gain a sense of a company’s financial health. Although net income can be a helpful gauge of financial performance, investors should always review the actual numbers backing up an organization's profit calculation to identify income sources and potential discrepancies.

Net income is also known as the bottom line, net profit, or net earnings, and it is calculated using the equation revenues - expenses = net income (NI). While net income can be viewed on its own, more detailed analyses may be broken down by subtracting further expenses such as taxes and interest. Interest payments for loans can be a major expense for some companies, which will affect the company’s net income calculations. Interest payments are subtracted from total revenues; therefore, it can be especially critical for investors to identify loans and related interest payments to understand an organization’s financial health.

Revenues can be difficult to comprehend because they may be categorized in ways that don't clearly explain their sources. For example, accounting methods may include trends like bundling services together, which makes it difficult to identify how much money is actually coming into the organization. These accounting methods can prove beneficial for the company, as it can lead to higher reported profits. This can be helpful to increase net income, but it's important to be aware of differences between actual and reported revenues. If discrepancies arise, analysts or investors should thoroughly analyze financial documents, and they should attempt to identify which expenses or incomes are either hidden or falsely reported.

When considering taxes, an individual’s taxable wages can be deducted from gross income to evaluate the pre-tax earnings. For example, an individual's gross income may be $50,000, but their taxable salary could only amount to $40,000 after relevant deductions. Therefore, the individual's net income would be calculated using $40,000 in pre-tax earnings. Other deductions should also be factored in such that income taxes, FICA taxes, health insurance premiums, and retirement plan contributions can all be accounted for when calculating net income.

Net income is incredibly important for individuals and corporations alike. It can help investors gain a better understanding of a company’s financial institution, but it also gives an individual a sense of how much money they will see in their paycheck. To get an accurate assessment of net income, revenues and expenses need to be assessed both on the surface and carefully. Net income can be an important contributor to financial success, and its calculation should be evaluated by a multitude of stakeholders.