GDP (Gross Domestic Product) is the value of all final goods produced in a year: Y = C + I + G + EX – IM, where:
The trade balance is represented as EX – IM.
Rearranging terms:
If both (Sp – I) < 0 and (T – G) < 0, then EX – IM < 0, indicating a trade deficit. This deficit is linked to low savings by households or the government.
The trade balance is determined by the macroeconomic saving behavior of households and the government.