Legal Definition
Net income is the profit realized by a company or individual after deducting all operating expenses from the gross revenue. It represents the true profitability of an entity, calculated by subtracting the costs incurred to generate the revenue from the total revenue generated.
Plain-English Translation
It's the money you actually keep after paying for all the bills and costs to run a business. It shows how much money is left over after you pay for everything that makes the business run.