Households and firms depend on each other in the circular flow of income in case of a two-sector model. Participants of the
two-sector economy are households and producers. Flow of money from
producers to households as payments for the purchase of factor services
has been a continuous process. So, there has been the flow of money from
households to producers as payments for the purchase of consumer goods
and services, This non-stop continuity of inter-sectoral flows is called
'circularity of flows'. Hence, total consumption by households is always equal to total production by the producers.