The Circular Flow Model

The Circular Flow Model Overview

  • The circular flow model depicts the continuous, repetitive flows of goods, services, resources, and money in a simplified market economy with no government sector.

  • Economic decision makers are divided into households and businesses, while markets are divided into the resource market and the product market.

The Circular Flow Diagram

Key Decision Makers

  • Households:

    • Defined as one or more persons occupying a housing unit, comprising about 123 million123\text{ million} households in the U.S. economy.

    • Own all economic resources directly or indirectly, including all labor, land, capital, and entrepreneurial ability.

    • Sell resources in the resource market to generate income (wages, rents, interest, and profits) and buy goods and services in the product market.

  • Businesses:

    • Commercial establishments that aim to earn profits by offering goods and services for sale, comprising about 30 million30\text{ million} businesses in the U.S.

    • Range from large corporations like Walmart (with 20202020 sales of $559 billion\$559\text{ billion} and 2.2 million2.2\text{ million} employees worldwide) to single-person sole proprietorships with sales of less than $100\$100 per day.

    • Buy resources in the resource market (incurring costs) and sell finished goods and services in the product market to earn revenue.

Key Markets

  • Resource Market:

    • The market where households sell resources to businesses.

    • Productive resources flow from households to businesses, while money flows from businesses to households as wages, rents, interest, and profits.

  • Product Market:

    • The market where households purchase the goods and services produced by businesses.

    • Household consumption spending flows to businesses as revenue in exchange for finished products.

Mechanics of Economic Flows

  • Resource and Product Flow: A counterclockwise flow carries productive resources from households to businesses and finished products from businesses to households.

  • Money Flow: A clockwise flow carries money income from businesses to households and consumption expenditures from households to businesses.

  • Invisible Hand: Competition directs individuals and firms to promote the overall social interest as if guided by an invisible hand.