--- title: "What Is Stagflation, and Why Do Central Banks Fear It?" description: "When prices keep rising while growth stalls and joblessness climbs, policymakers face an impossible choice. Here's what stagflation is, why it breaks the usual rules, and why economists watch for it with unease." category: "Economy" category_url: https://boursel.com/category/economy author: "Hannah Blackwood" published: 2026-06-26T21:30:00.000Z updated: 2026-06-26T21:30:00.000Z canonical: https://boursel.com/article/what-is-stagflation-and-why-do-central-banks-fear-it tags: ["stagflation", "inflation", "federal-reserve", "1970s", "economy"] --- # What Is Stagflation, and Why Do Central Banks Fear It? When prices keep rising while growth stalls and joblessness climbs, policymakers face an impossible choice. Here's what stagflation is, why it breaks the usual rules, and why economists watch for it with unease. *This is general information, not investment advice.* Most economic problems come one at a time. Stagflation is the rare case where two arrive together — and the usual cure for one makes the other worse. ## What it is **Stagflation** is the simultaneous combination of **stagnant growth** (or recession) and rising unemployment **plus persistent inflation** — a portmanteau of *stagnation* and *inflation*, coined by British politician Iain Macleod in 1965: "the worst of both worlds." Normally, inflation and unemployment move in **opposite** directions — a hot economy lifts prices but cuts joblessness; a weak one does the reverse. That inverse relationship, mapped by economist A.W. Phillips in a 1958 study, became known as the **Phillips curve** and underpinned postwar policy. Stagflation tears it apart, delivering high prices and high unemployment at once. ## Why it traps central banks This is the heart of why stagflation is feared. The Fed has two goals — stable prices and maximum employment — and one main tool, interest rates. In a normal downturn it **cuts** rates to revive growth; in an inflationary boom it **raises** them to cool prices. Stagflation destroys that symmetry: to fight inflation the Fed must **raise** rates, which deepens the weakness and joblessness already present; to fight unemployment it must **cut** rates, which fuels the inflation it's trying to suppress. Neither move fixes both. The central bank is forced to choose which patient to treat while the other gets worse — a paralysis the standard toolkit can't cleanly resolve (see our explainer on how the Fed sets rates). ## The textbook case: the 1970s The defining episode came in the 1970s, driven by two oil shocks. On **October 17, 1973**, Arab oil producers (OAPEC) embargoed exports to the US; crude nearly **quadrupled**, from about $3 to nearly $12 a barrel, [per Federal Reserve History](https://www.federalreservehistory.org/essays/oil-shock-of-1973-74), hitting an already-overheating economy. The second shock came with the **1979** Iranian Revolution, which knocked out roughly 4.8 million barrels a day (~7% of world supply) and roughly tripled prices. US inflation climbed above **13%** while unemployment rose; the **"misery index"** (inflation + unemployment, devised by economist Arthur Okun) topped 20 in 1980. The cure was brutal. Fed Chair **Paul Volcker**, appointed in 1979, [pushed interest rates to nearly 20%](https://www.federalreservehistory.org/people/paul-a-volcker) by 1981 — triggering back-to-back recessions and unemployment of **10.8%** in December 1982, the highest since the Great Depression. But it broke inflation, which fell back to about 2.5% by 1983. ## What causes it Three forces, usually combined: - **Supply shocks:** a sudden hit to a key input (classically energy) raises costs *and* cuts output at the same time — the 1973/79 embargoes are the model. - **Policy mistakes:** central banks that tighten too slowly let inflation expectations become entrenched, as in the 1970s. - **Wage-price spirals:** as prices rise, workers demand higher pay, firms raise prices again, and so on. The **IMF** found true wage-price spirals have actually been historically rare — but the risk grows when inflation expectations come "unanchored." ## How it's spotted — and today's debate Economists watch for elevated **CPI/PCE inflation** *and* rising **unemployment** *and* decelerating **GDP**, all at once (see our inflation, recession and GDP explainers). The diagnosis is genuinely hard in real time, because those features rarely peak together. Worries about stagflation tend to resurface whenever inflation stays high while growth cools — as in a period of energy-price shocks and tariffs. Boursel's own coverage this year has tracked exactly that tension: an inflation gauge running well above the Fed's 2% target alongside signs of slowing growth. But elevated inflation plus some softening is **not the same as stagflation**, and most economists frame it as a **risk to monitor, not a present diagnosis** — particularly while the labor market holds up. We present it as a debated scenario, not a verdict. ## What it means for households and investors Stagflation is uniquely corrosive: inflation erodes the real value of wages and savings even as the job market weakens, squeezing households from both sides. It's historically been hard on **markets too** — rising inflation eats into the real value of bonds while weak growth hurts corporate earnings and stocks, stripping away the usual benefit of holding both. The Volcker era showed stagflation *can* be beaten — but only at a steep price in jobs and growth. That history is why central bankers treat even the early signs with such caution. ## Sources - [Oil Shock of 1973–74](https://www.federalreservehistory.org/essays/oil-shock-of-1973-74) - [Paul A. Volcker](https://www.federalreservehistory.org/people/paul-a-volcker)