Defining: Consumption, Investment and Saving

In macroeconomics, consumption, saving, and investment are key ways households and firms use their income.

Consumption is the use of disposable income to purchase goods and services to satisfy current wants. For example, Mr. Thompson and his family regularly spend on groceries, clothing, and entertainment—items that are used up in the present and provide immediate satisfaction. These everyday expenses illustrate typical household consumption, which fulfills current wants without generating future returns.

Saving is the portion of income not spent on current consumption. Suppose the Thompsons earn two thousand dollars a month and spend one thousand seven hundred. The remaining three hundred dollars is savings—money set aside for future use.

Conversely, investment refers to spending on assets that boost future production. For instance, Mr. Thompson, who runs a tailoring shop, decides to expand his business by purchasing a new sewing machine. Investment also includes additions to business inventories that support future sales.

Ultimately, consumption, saving, and investment are interconnected, shaping household decisions and the economy.