What is Income?

Income is the inflow of money that a household receives over a given period. For most working Americans, the primary source is earned income—wages, salaries, tips, commissions, and self-employment earnings. Other common sources include investment income (interest, dividends, capital gains), retirement income (Social Security, pension payments, retirement account withdrawals), rental income, and government transfer payments (unemployment insurance, SNAP, disability benefits).

The IRS defines gross income broadly under Internal Revenue Code Section 61: all income from whatever source derived, unless specifically excluded. The Bureau of Labor Statistics tracks income data through the Consumer Expenditure Survey, publishing annual reports on before-tax and after-tax income by demographic group, region, and household composition.

Income stability and predictability matter as much as total amount. A worker earning $80,000 in steady W-2 wages has greater borrowing capacity and budgeting certainty than a freelancer whose annual gross is $80,000 but whose monthly income fluctuates between $2,000 and $12,000. The CFPB requires mortgage lenders to verify income continuity—typically two years of consistent earnings in the same line of work—as part of the ability-to-repay rule under Regulation Z.