Hyperinflation
Hyperinflation is an extreme form of inflation in which prices rise very rapidly and confidence in the currency collapses, so money loses most of its value within months or even days.
How extreme is extreme?
There is no single official threshold, but a widely used academic definition, from the economist Phillip Cagan, describes hyperinflation as prices rising by more than 50 percent in a single month. At that pace, prices roughly double every couple of months and rise more than a hundredfold in a year.
At this stage money stops working as a store of value and often as a unit of account. Shops reprice daily, wages are spent the moment they arrive, and people switch to foreign currency, barter or goods.
What causes it
Hyperinflation almost always follows a government financing large deficits by having the central bank create money, often after a war, a collapse in production, heavy foreign-currency debt or political crisis. As prices rise, people try to get rid of the currency faster, which pushes prices up even more. Once trust breaks, the spiral is hard to stop without a credible reform, frequently a new currency.
Well-known examples
Germany in 1922 and 1923 is the classic case: by late 1923 prices were being quoted in billions of marks before a new currency stabilized things. Hungary after the Second World War, in 1946, experienced the most extreme hyperinflation on record. Zimbabwe in 2007 and 2008 saw prices rise so fast that it printed a 100 trillion dollar note and eventually abandoned its own currency. Venezuela went through hyperinflation in the late 2010s.
Hyperinflation and crypto
In countries with very high inflation, some people use cryptocurrencies, especially dollar stablecoins, to hold value outside the local currency and to receive payments from abroad. This can help, but it carries its own risks: crypto prices are volatile, stablecoins depend on their issuers, local rules may restrict access, and converting back into local cash can be costly or difficult.
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Frequently asked questions
What is the difference between inflation and hyperinflation?
Inflation is a general rise in prices, usually a few percent a year. Hyperinflation is an uncontrolled collapse of the currency with prices rising by tens of percent or more each month.
How does hyperinflation end?
Usually through a credible reform: stopping money-financed deficits, often combined with a new currency, a currency board or adopting a foreign currency such as the US dollar.
Can Bitcoin experience hyperinflation?
Bitcoin's issuance is fixed by protocol rules, so its supply cannot be expanded at will. Its price in fiat terms can still fall sharply, which is a different risk.
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