Case: The Great Inflation and the Volcker Disinflation

How an anchor is lost, in order

The great inflation is best read as a sequence rather than a single event, because each step is a decision that makes the next one harder. It begins with a shock that raises the price level directly — the oil embargoes of 1973 and 1979 are the famous ones, but the fiscal expansion of the late nineteen-sixties and the collapse of the fixed-exchange-rate anchor in 1971 had already loosened the nominal moorings. The second step is that households and firms revise their expectations of inflation upward, which is rational when the shocks keep arriving and the policy response keeps retreating. The third is that wage demands are indexed to that expectation, through formal cost-of-living clauses and through bargaining that takes the last two years of price increases as its starting point. The fourth is that firms grant the wages and reprice to protect margins, so the cost increase is passed on and the expectation is validated. The fifth step is the one that matters most: long-run expectations move, and once they move the process is self-sustaining, because the expectations themselves are now a source of inflation rather than a forecast of it. The sixth step is the policy decision, and it is the one that turned a shock into a decade. A framework that believed in a permanent trade-off between inflation and unemployment would tolerate inflation to protect employment, tighten when inflation became politically intolerable, and ease again when unemployment rose — the stop-go pattern that left the anchor drifting and taught everyone that the central bank would ultimately accommodate. That is the credibility problem in its purest form: not that the bank could not tighten, but that everyone had learned that it would not persist. Accommodation was not a mistake of analysis, it was a rational response to the framework the committee believed, and the framework was wrong about the trade-off. The resolution is the mirror image, and its cost is the subject of the arithmetic. Rebuilding the anchor requires that expectations actually move, and they only move when the policy is believed — which means the tightening must persist through a recession rather than stop at the first sign of one. That is why the disinflation of the early nineteen-eighties ran policy rates into the high teens, produced the deepest recession of the postwar period to that point with unemployment above ten percent, and still took about three years to bring inflation to the low single digits. The output cost was the price of the anchor, and it was paid in one instalment precisely because the anchor had been spent slowly over the preceding decade. What the anchor cost — 1980s: inflation 9.5% → 3.5%: a disinflation of 6.0 percentage points · 1980s: cumulative output loss: about 19% of a year’s GDP in this stylised accounting · Sacrifice ratio: 19.0 / 6.0 ≈ 3.2 — about three points of a year’s output per point of disinflation ← · 2022–2026: 9.1% → 2.9% with the anchor intact: a 6.2-point disinflation at roughly 0.5% of a year’s output · Ratio of the two costs: roughly 39×, for the same size of disinflation The comparison is not an argument that the recent episode was handled perfectly, and it is not a claim that the cost was zero. It is an argument about the state of the anchor: the same disinflation is a different purchase depending on whether expectations have to be rebuilt or merely maintained.

What the two episodes do and do not prove

The first lesson is that the anchor is cheaper to maintain than to rebuild, and the asymmetry is severe. Maintaining it costs nothing visible: it is the difference between a disinflation that arrives through the supply channel and one that has to be driven through the labour market. Rebuilding it costs the output that a decade of accommodation deferred, and it is paid at the worst possible moment, because the tightening that rebuilds it is the one that has to be held through a recession. That asymmetry is the argument for tightening early against a shock you hope is temporary, and it is the argument that is hardest to make politically because the cost of inaction is invisible until the anchor has already moved. The second lesson is that the anchor is an observable rather than a belief. It shows up in the long-run expectations series, in the term structure of traded break-evens, in the behaviour of wages relative to productivity, and in whether indexed contracts spread. That is what makes the recent episode explicable rather than lucky: long-run expectations stayed near target through the largest inflation shock in four decades, wages did not incorporate the energy spike, unit labour costs lagged the price move rather than leading it, and the disinflation therefore cost a fraction of what the historical relationship implied. The lesson is not that the shock was handled by cleverness; it is that the framework had spent forty years earning an asset and then drew on it. The third lesson is the one that connects to the fiscal and the balance-sheet subjects. An unanchored inflation is expensive to end partly because of what the disinflation does to the debt arithmetic: the same tightening that restores credibility raises the interest burden, and a government that has financed itself with long-dated debt at low rates faces the refinancing wall exactly as the disinflation bites (MR11 and MR16 for the two halves). And the instrument mix matters, because a tightening delivered through the policy rate and a tightening delivered through the balance sheet act on different terms of the same yield (MR15): the 1970s had no balance sheet to speak of and had to do all of it with the rate, which is one reason the cost looked the way it did. Read the case as a statement about what an anchor is worth, and then read the current data to see whether the anchor is still there — because that is the input that decides the price of the next disinflation, not the size of the next shock. • The anchor is cheaper to maintain than to rebuild, and the asymmetry is severe. • Rebuilding it requires holding the tightening through a recession, which is why it is politically expensive. • The anchor is observable — long-run expectations, break-evens, wage behaviour, indexation. • The recent disinflation was cheap because expectations never moved, not because the shock was small. • A disinflation and its debt arithmetic have to be read together: the refinancing wall bites at the same time.

The politics of disinflation

Disinflation is cheap in a model and expensive in a democracy, and the difference is the reason the 1970s case belongs in a macro curriculum rather than only in a history of monetary policy. The cost is concentrated, visible and attributable; the benefit is diffuse, delayed and claimed by everyone. That asymmetry, not a lack of understanding, is what produced the decade. The pattern was not ignorance but interruption. Each tightening raised unemployment, and each time the political cost arrived the policy was reversed before inflation had fallen durably. The result was a sequence in which the level ratcheted upward: stop-go, with the go phase arriving at a higher starting point than the previous one. A central bank that repeatedly halts a tightening does not merely fail to reduce inflation; it teaches everyone that the tightening is temporary. That teaching is the mechanism that made the eventual disinflation expensive. Once wage bargainers and price setters expect each attempt to be abandoned, they set wages and prices with the expectation built in, which reduces the real effect of any given rate level while leaving the inflation in place. Breaking it therefore required a move large enough and long enough to change the expectation rather than merely to cool demand — which is why the credible disinflation began with an explicit acceptance of a severe recession rather than with a cleverer policy. The credibility was purchased, and the purchase price was the recession. This is the argument for the institutional furniture that followed: an explicit mandate, a numerical target, independent decision-makers with terms longer than an electoral cycle, and a preference for acting early because the cost of being late rises non-linearly. Each is a commitment device for a policy whose near-term popularity and long-term success point in opposite directions. Seen that way, independence is not a technical arrangement, it is a solution to a political problem. The same asymmetry is worth recognising in a portfolio, because it is not confined to central banking. Any plan that requires a temporary loss for a durable gain — a de-risking, a hedge that costs a premium, a drawdown tolerance, staying out of a crowded trade while it keeps working — will be tested exactly at the point where abandoning it is most expensive to reverse. The 1970s lesson for an investor is less about inflation than about what happens to a commitment when its own success arrives late. The honest caveat: the decade does not establish that every inflation is expectations-led. The episode that followed the pandemic ran partly on supply shocks and demand, with unit labour costs lagging the price move — a different mechanism that the earlier reads in this subject examine directly. What transfers is not a single causal story but the observation that a policy abandoned at the first cost is abandoned while it is working. • The cost of disinflation is concentrated and immediate; the benefit is diffuse and deferred. • Repeated halts ratchet the level up and teach that tightening is temporary. • Credibility was purchased with a deliberately accepted recession, not with a cleverer rule. • Independence and targets are commitment devices for an unpopular short run. Worth carrying as a general test: for any plan with a delayed payoff, ask what the interim cost looks like and whether the plan will still be in force when it arrives. The answer is usually the difference between a policy and an intention.

Sources

• The great inflation: causes, policy framework and the role of expectationsStandard Federal Reserve and academic histories of the 1965–1982 inflation; Meltzer, “A History of the Federal Reserve”
• The October 1979 operating-procedure change and the disinflationFederal Reserve historical materials on the reserve-targeting regime; Volcker-era FOMC records
• The sacrifice ratio: measurement and historical estimatesStandard Phillips-curve literature; Ball (1994) on what determines the sacrifice ratio
• The 2021–2026 disinflation and the anchored expectationPost-2021 disinflation literature; Federal Reserve commentary on labour-market and inflation dynamics