The value representing the difference between a nation’s total export of goods and services and its total import of goods and services is a key indicator in international trade. Specifically, this metric is calculated by subtracting the total value of imports from the total value of exports. A positive value indicates that a country exports more than it imports, resulting in a trade surplus. Conversely, a negative value signifies that a country imports more than it exports, leading to a trade deficit. For example, if a country exports goods and services worth $500 billion and imports goods and services worth $400 billion, the difference, or $100 billion, represents this calculated value.
This figure serves as a crucial component in determining a country’s gross domestic product (GDP). As part of the expenditure approach to calculating GDP, it reflects the contribution of international trade to a nation’s economic output. A trade surplus generally contributes positively to GDP growth, suggesting increased demand for domestic goods and services from foreign markets. A trade deficit, on the other hand, can detract from GDP growth, indicating a greater demand for foreign goods and services within the domestic market. Historically, nations have strived to maintain favorable trade balances, as they often correlate with economic strength and competitiveness.