Net foreign exchange income refers to a country's net income in international trade, that is, the difference between income and expenditure. It can help the government understand the country's trade situation, so as to better formulate economic policies. This paper will introduce the calculation formula of net foreign exchange income and discuss its importance to the development of national economy.

1, the calculation formula of net foreign exchange income

Net foreign exchange income refers to a country's net income in international trade, that is, the difference between income and expenditure. The calculation formula of net foreign exchange income is: net foreign exchange income = export income-import expenditure.

Export income refers to the total income of export goods or services, including sales income of export goods and services income. Import expenditure refers to the total expenditure of imported goods or services, including the purchase expenditure of imported goods and services.

2. The importance of net foreign exchange income

Net foreign exchange income is an important indicator of a country's international trade balance, which can help the government understand the country's trade situation and formulate better economic policies.

The symbol of net foreign exchange income can reflect a country's trade situation. If the net foreign exchange income is positive, it means that the country's export income is greater than its import expenditure, and the country's trade balance is in good condition. If the net foreign exchange income is negative, it means that the country's import expenditure is greater than its export income, and the country's trade balance is in an unfavorable situation.

The symbol of net foreign exchange income can also reflect a country's economic development. If the net foreign exchange income is positive, it means that the country's economy is developing well. If the net foreign exchange income is negative, it means that the country's economic development is poor.

To sum up, the calculation formula of net foreign exchange income can reflect a country's trade and economic development, so it is very important for the country's economic development.

This paper introduces the calculation formula of net foreign exchange income and discusses its importance to the development of national economy. Net foreign exchange income can reflect a country's trade and economic development, so it is very important for the country's economic development.