Monetarism

framework · economics · organizing-schema

Friedman's framework: inflation is everywhere a monetary phenomenon.

Monetarism is the macroeconomic tradition associated principally with Milton Friedman that places the quantity of money at the center of explanations for inflation, output fluctuations, and the business cycle. Its central propositions are that money is neutral in the long run but non-neutral in the short run, that the long-run Phillips curve is vertical at the natural rate of unemployment, and that discretionary monetary policy is more likely to destabilize than stabilize the economy — a critique that motivated Friedman's proposed k-percent money-growth rule. Empirically grounded in Friedman and Schwartz's monumental Monetary History of the United States (1963), monetarism shaped Volcker-era US disinflation but lost its central operational role when money-demand instability rendered monetary aggregates unreliable as policy targets, ceding that role to inflation targeting and the Taylor rule.

Originators

Milton Friedman; Anna Schwartz; Karl Brunner; Allan Meltzer high

Year / Decade

1956 (Friedman's restatement of the quantity theory); 1963 (Monetary History); 1968 (presidential address on the role of monetary policy) high

Primary sources

Friedman, M. (1956). 'The Quantity Theory of Money: A Restatement', Friedman, M. & Schwartz, A. (1963). A Monetary History of the United States, 1867-1960, Friedman, M. (1968). 'The Role of Monetary Policy', American Economic Review high

Core components

Quantity theory of money (MV=PY)
Long-run neutrality of money
Vertical long-run Phillips curve at natural rate of unemployment
Adaptive (later rational) expectations
Money-supply rule (k-percent rule)
Critique of activist demand management
Permanent income hypothesis (related Friedman contribution)

Primary use case

Foundation of monetary policy thinking through the 1980s; intellectual basis for Volcker disinflation and central bank independence; ongoing influence in inflation-targeting frameworks despite operational displacement of money-supply targets.

Common criticisms

Money demand became unstable from the 1980s, undermining money-supply targeting
modern central banks operate via interest rates rather than monetary aggregates
quantitative easing era complicated simple monetarist priors about money and inflation
the strong claim that 'inflation is always and everywhere a monetary phenomenon' is contested for cost-push and supply-side episodes (e.g., 2021-2022).

Lineage

Siblings: Keynesian Economics, Austrian School, Phillips Curve