Mercantilism was the set of economic ideas and policies that dominated Western Europe from roughly the sixteenth to the late eighteenth century. Its central belief was that a nation's wealth and power depend on running a trade surplus, selling more abroad than it buys, so that gold and silver flow in. To achieve this, states taxed or banned imports, encouraged exports and domestic manufacturing, and built colonial empires to supply raw materials and captive markets.
Mercantilism was less a single theory than a practice shared by rival monarchies, written up by merchants and officials. It came before modern economics and was the main target of Adam Smith and classical economics, which argued for free trade instead. The word is still used today, often critically, for policies that treat trade deficits as losses and surpluses as victories.
Mercantilism in plain terms
Imagine a family that judges how well it is doing purely by how much cash is in the safe. Every purchase from a shop counts as a loss, every sale of homemade jam counts as a win, and the family tries to make everything itself and buy almost nothing. The safe fills up, but the family lives less comfortably than it could.
Mercantilist states thought about nations in a similar way. Gold coming in meant strength, gold going out meant weakness, and trade was a contest in which one country's gain was another's loss. Later economists argued that a country's real wealth is what its people can produce and consume, not the metal in its vaults.
Core ideas and policies
- Bullion as wealth. Early thinkers, sometimes called bullionists, equated wealth with precious metals; Spain, enriched by American silver, restricted their export.
- Favorable balance of trade. Later writers such as the English merchant Thomas Mun, whose England's Treasure by Forraign Trade was published in 1664, argued that the overall balance mattered more than individual transactions.
- Protection of industry. High tariffs on manufactured imports, bans on exporting raw materials and machinery, and subsidies and monopolies for domestic producers.
- Colonies and shipping. Colonies were to supply raw materials and buy finished goods from the home country. England's Navigation Acts, starting in 1651, required much colonial trade to use English ships.
- Chartered companies. State-backed monopolies such as the English East India Company (1600) and the Dutch East India Company (1602) combined trade, finance and military power.
In France, Jean-Baptiste Colbert, chief minister of finances under Louis XIV from 1665, built state-run manufactures, roads and a navy, giving rise to the term Colbertism for state-directed development.
The classical critique
David Hume's 1752 essay on the balance of trade set out the price–specie flow mechanism. A country that ran a surplus would gain gold, raising its money supply and prices; its goods would become dearer and its imports cheaper by comparison, eroding the surplus. A permanent hoard of gold was therefore impossible, and inflation would be the main result. The same self-correcting logic later underpinned thinking about the gold standard.
Adam Smith coined the phrase "mercantile system" in The Wealth of Nations (1776) and attacked it at length. He argued that wealth lies in goods and productive labor, that trade benefits both sides through specialization and the division of labor, and that tariffs and monopolies serve merchants at the expense of consumers. David Ricardo's comparative advantage completed the case that trade is not a zero-sum contest.
Legacy and neo-mercantilism
Mercantilist policies helped finance state-building, navies and early industry, and some historians argue they played a part in Britain's rise. Their colonial side involved forced labor, slavery and the extraction of resources from conquered territories, which modern accounts treat as central rather than incidental. John Maynard Keynes, in his General Theory (1936), argued that the mercantilists had a point about the effect of trade surpluses on employment and interest rates when economies have idle resources, a view linked to Keynesian economics.
"Neo-mercantilism" describes modern strategies that seek persistent trade surpluses through undervalued exchange rates, export promotion, large foreign exchange reserves and support for national champions. Critics have applied the label at various times to Japan, Germany and China, and some see echoes of it in the return of protectionism since the late 2010s. Most economists reject the core mercantilist idea that a surplus is always good and a deficit always bad, noting that the balance of payments reflects saving and investment decisions as well as competitiveness.