> Thus income can not be treated as equivalent to GDP.
GDP is defined as total income, calculated in a certain way. There are also other equivalent definitions.
Income is the endpoint of economic activity. Your income contributes to the GDP when you earn it.
Your spending is largely unrelated to your income. In any period of time, you can spend more than you earn or less than that. Spending creates new economic activity. That activity contributes to the GDP, which by definition means creating new income.
> Thus income can not be treated as equivalent to GDP.
GDP is defined as total income, calculated in a certain way. There are also other equivalent definitions.
Income is the endpoint of economic activity. Your income contributes to the GDP when you earn it.
Your spending is largely unrelated to your income. In any period of time, you can spend more than you earn or less than that. Spending creates new economic activity. That activity contributes to the GDP, which by definition means creating new income.