The króna circulates in a country of fewer than 400,000 people. The Jamaican dollar serves an island economy smaller than metropolitan Detroit. Botswana's pula, Bhutan's ngultrum, Paraguay's guaraní — dozens of nations with populations under ten million maintain their own currencies, complete with central banks, foreign-exchange desks, and the full apparatus of monetary sovereignty. The question is not whether they can afford it. The question is why they bother.
The costs are real and measurable. A small currency requires a central bank staff, a printing facility or contract, a payments infrastructure, and constant intervention to manage exchange rates. Iceland's króna crisis in 2008 saw the currency lose half its value in weeks; the Central Bank of Iceland burned through reserves trying to stabilize it. Small currencies are illiquid, expensive to trade, and vulnerable to speculative attack. Tourists complain. Importers hedge. Every international transaction carries a conversion tax.
Yet when economists propose dollarization — adopting the U.S. dollar or euro as legal tender — governments almost always refuse. Ecuador and El Salvador dollarized, and both gave up more than convenience.
The real value of a printing press
Monetary sovereignty means the power to respond to local shocks. When Iceland's banks collapsed in 2008, the króna's depreciation made exports competitive and tourism exploded; the economy recovered faster than Ireland, which was locked into the euro. When Jamaica faces a hurricane, the central bank can ease credit conditions without waiting for the Federal Reserve's next meeting. A sovereign currency is a shock absorber.
It also means seigniorage — the profit from issuing money. Small, but not trivial: when a central bank prints a 1,000-króna note that costs 30 krónur to produce, it captures the difference. For a small country, seigniorage can fund a percentage point of GDP. Dollarization hands that revenue to Washington.
More subtly, a national currency is a coordinating device. Prices, wages, taxes, and debts are all denominated in the same unit, which makes the economy legible to itself. Dollarization creates a split: locals earn in dollars but think in the old currency, leading to confusion and inflation illusion. The psychological cost is harder to measure but persistently cited by central bankers.
The political economy of the mint
Monetary sovereignty is also about sovereignty, full stop. A currency is a flag you can spend. It signals independence, appears on stamps and coins, and gives the central bank governor a seat at international meetings. Small countries guard this jealously, even when the economic case is ambiguous.
The counterfactual is not a frictionless dollar zone. Dollarized economies lose flexibility but do not eliminate currency risk — they simply import it. When the Fed tightens to fight U.S. inflation, dollarized Ecuador suffers a credit crunch it cannot offset. The currency is stable, but the business cycle is not.
The optimal currency area theory, articulated by Robert Mundell in the 1960s, predicts that regions with integrated trade, synchronized business cycles, and labor mobility should share a currency. By that standard, Iceland should use the euro and Jamaica the dollar. Yet Mundell himself noted that political boundaries matter: people tolerate adjustment costs more easily when they occur within a nation than when imposed by a foreign central bank.
Our take
The persistence of small currencies is not irrational. It reflects a judgment that monetary policy is worth paying for, even when the currency is volatile and the economy is tiny. The real puzzle is not why Iceland keeps the króna, but why so many economists are surprised that it does. Money is not just a medium of exchange. It is a tool of statecraft, a symbol of autonomy, and a buffer against external shocks. Small countries print their own money for the same reason they field their own Olympic teams: because sovereignty is not purely a matter of cost-benefit analysis. The króna may be inconvenient, but it is Iceland's inconvenience, and that matters more than the textbooks admit.
