Formulas

Formulas 

Balance and trade 

Goods and services exports - goods and services imports

Trade deficit 

Imports > Exports

Trade surplus 

Exports > imports 

Informal way

Good exports + goods imports 

Balance of trade

Goods imports + service imports

Current account

Balance of trade + net investment + net transfer 

Capital account 

Foreign purchases of US assets + US purchases of assets abroad 

Official reserves 

Capital account balance + current account balance