Ordinary income is the money you earn from working, running a business, or receiving certain payments—the foundation of what the IRS taxes each year. Unlike investment gains or other special income types, ordinary income gets taxed at your regular tax rate, which depends on how much you earn. Understanding what counts as ordinary income matters because it determines how much tax you owe and which deductions or credits might reduce that tax.

These articles explain how wages, self-employment earnings, rental income, and other common sources are treated by the tax system. You'll learn why the same dollar amount can be taxed differently depending on where it comes from, how ordinary income interacts with tax brackets, and what records you need to report it accurately on your return.