The first reason why consumer spending is significant in macroeconomics is that it stimulates cash flow in the economy. When consumers spend, the economy is assured of proper circulation of money through cash flow from one individual to another.

Secondly, consumer spending is significant in indicating consumer confidence levels in the economy. Consumer confidence involves examining the consumer's views concerning the current and future economic circumstances, which is essential in showing an economy's overall state.

Finally, consumer spending is essential in macroeconomics because it governs the whole economy. This means that without consumer spending, the economy will be irrelevant. It is through consumer spending that the production and consumption of products and services are monitored.