What Is Passive Income?
In the simplest terms, the IRS defines passive income as earnings from a trade or business in which you do not materially participate, or from a rental activity. This definition is primarily found in Internal Revenue Code (IRC) §469. It's distinct from active income, which comes from wages, salaries, or a business where you are actively involved, and portfolio income, which includes interest, dividends, annuities, and royalties (unless they arise from active trade or business activities).
The key to passive income is the concept of "material participation." The IRS sets out seven tests to determine if you materially participate in an activity during a tax year. If you meet any one of these tests, the income (or loss) from that activity is generally not passive. These tests typically involve spending a certain number of hours in the activity, or being the only person doing essentially all the work. For most rental activities, they are automatically considered passive activities, regardless of your participation, unless you qualify as a real estate professional under precise IRS rules.
Understanding this distinction is vital for small business owners. For instance, owning a share in a limited partnership is usually categorized as a passive activity because limited partners typically do not materially participate in the business's day-to-day operations. This classification has significant consequences for how losses from these activities are treated on your tax return.