Mercantilism
What is Mercantilism?
Mercantilism was an early economic doctrine that a nation's wealth comes from accumulating gold and running trade surpluses through protectionism.
It favored exports over imports, tariffs, and colonies to amass precious metals. Adam Smith and later economists rejected it, showing that voluntary trade based on comparative advantage benefits both sides.
Mercantilism: a worked example
A mercantilist kingdom exports 400 bolts of cloth at 3 gold coins each, taking in 1,200 gold, and imports 500 casks of wine at 2 gold each, paying out 1,000 gold, for a surplus of 200 gold. The chancellor imposes a 1-gold tariff per cask. Foreign sellers hold their price at 2 gold, so the price to domestic buyers rises to 3 gold and quantity demanded falls to 300 casks. Only 2 gold per cask still leaves the country, so imports now drain 600 gold. The recorded surplus jumps to 1,200 minus 600, or 600 gold, and the treasury collects 300 gold in tariff revenue. The chancellor calls that a double win. The price-specie-flow mechanism supplies the sting: the 600 gold arriving each period swells the domestic money supply, domestic prices rise, and the kingdom's cloth grows dearer abroad until the surplus closes itself.
The mistake students make with mercantilism
Students score the tariff the way the chancellor does, by a surplus that tripled from 200 to 600 gold and 300 gold of fresh revenue, and call it a success. Both numbers come out of domestic pockets. Wine drinkers pay the full 1-gold tariff on each of the 300 casks they still buy, so the treasury's take is a transfer from subjects rather than a levy on foreigners, and the 200 casks nobody buys anymore are gone with nothing recorded against them. A mercantilist ledger counts the metal and never counts the wine.
Mercantilism questions
Why did Adam Smith reject mercantilism?
Adam Smith argued that a nation's wealth is its annual production of goods and services, not its stock of gold, so hoarding metal through tariffs and monopoly charters made a country poorer in the things people actually consume. He also showed that voluntary exchange is positive sum: both sides trade only when each values what it receives more than what it gives up. Mercantilist policy, on his reading, enriched protected merchants at the expense of everyone who bought their products.
What is the difference between mercantilism and protectionism?
Mercantilism is a full doctrine about what makes a nation rich, namely precious metals accumulated through permanent trade surpluses, and it prescribes colonies, navigation laws, export subsidies, and tariffs as the means. Protectionism is just one of those means, a policy of shielding domestic producers from foreign competition. A country can be protectionist for reasons that have nothing to do with mercantilism, such as an infant-industry argument or national defense, so the two words are not interchangeable on an exam.
Do modern economies still use mercantilist policies?
Mercantilist thinking shows up whenever a government treats a trade surplus as a scoreboard and manages tariffs, export subsidies, or its currency to keep that number positive. The vocabulary has changed, so the argument arrives as protecting strategic industries or defending jobs rather than as amassing bullion, but the underlying claim is the same one Smith attacked: that selling more than you buy is the aim of trade. Economists still answer that consumption, not the surplus, is the measure of gain.
Related terms
Common comparisons
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