BALANCE OF TRADE, a term in economics belonging originally to the period when the "mercantile theory" prevailed, but still in use, though not quite perhaps in the same way as at its origin. The "balance of trade" was then identified with the sum of the precious metals which a country received in the course of its trading with other countries or with particular countries. There was no doubt an idea that somehow or other the amount of the precious metals received represented profit on the trading, and each country desired as much profit as possible. Princes and sovereigns, however, with political aims in view, were not.
Emerich de Vattel, Le Droit des gens (Leiden, 1758).
INTREODUCTION
Classical economic doctrine holds that countries compete by producing and exporting what they make best, while importing from other countries those goods where they lack comparative advantage. The tally of exports and imports results in either a trade surplus, thought to be good, or a deficit, considered bad.
Today that 200-year-old theory is flawed and overly simplistic. And when policy makers insist on reducing the way that countries economically interact to a single figure - the trade balance - it is dangerous, especially when it unleashes a specter of protectionism.
FOREIGN TRADE BALANCE
The balance of trade forms part of the current account, which also includes other transactions such as income from the international investment position as well as international aid. If the current account is in surplus, the country's net international asset position increases correspondingly. Equally, a deficit decreases the net international asset position.
The trade balance is identical to the difference between a country's output and its domestic demand (the d ...