What does the circular flow model conclude about national income national expenditure and national output? National income- the total income (wages rent interest & profit) earned in an economyNational expenditure- the total spending by households on goods and servicesNational output- the total value of goods and services produced by firms in an economyAccording to the circular flow:National income=National expenditure=National outputAs all 3 are equivalent often the term national income is used for all three. Therefore a common defintion of national income is the total value of the output expenditure and income in any economy over a period of time.