What Caused the 1970s Stagflation Crisis? (And Could It Happen Again?)

For a whole generation, economists taught one iron rule: an economy could have high inflation or high unemployment, but never both at once. Then came 1974, and both ran high and rising at the same time.

The one rule every textbook agreed on — drawn as the Phillips Curve, named for a New Zealand economist — simply broke in half. Economists needed a new word for the wreckage, and the one they chose was ugly on purpose: stagflation. A stagnant economy and inflation running together. This is not about what stagflation felt like. It is about what caused it. Because "the 1970s were inflationary" is not an answer; it is a fog. Behind the fog sit three specific causes, stacked one on top of another: first, too many dollars; second, an oil shock that struck twice; and third, a wage-price spiral that fed on itself, and that the government's own cure quietly made worse. You can watch every one of them land in a single household budget — one paycheck, one family of four, a spiral notebook on the kitchen counter where the month's costs were written down and, year after year, stopped adding up.

Start with the dollars, because inflation, at its root, is a story about money. The economist Milton Friedman put it in one sentence: inflation is always and everywhere a monetary phenomenon. Too many dollars, chasing the same goods. So where did the dollars come from? On a Sunday night, August 15, 1971, President Richard Nixon closed the gold window. Until that evening a foreign government could hand the United States $35 and receive an ounce of gold — a promise that had anchored the world's money since 44 nations met at Bretton Woods, New Hampshire, in 1944. Nixon cut that anchor, and a currency backed only by trust can be printed. Across the decade the broad money supply, the measure economists call M2, grew about two and a half times. The Federal Reserve, under chairman Arthur Burns, kept money cheap when it should have tightened, because tightening would have cost jobs. So the dollars kept coming.

In the notebook that looked ordinary at first. A loaf of bread that ran about a quarter early in the decade cost close to 50 cents by the end. A pound of ground beef went from about 65 cents toward $1.80. The shelf had not changed; the dollars had multiplied, and it took more of them to lift the same bag of groceries. Then comes the line that fools people: the family's paycheck doubled too. The median family earned about $9,900 in 1970 and about $21,000 by 1980 — ten years of raises on paper. But the Consumer Price Index doubled in step, so the fatter paycheck bought nothing extra. That is what too many dollars does first. It hides inside a bigger number that feels like progress.

The second cause did not come from Washington. It came from the Persian Gulf, and it arrived twice. In October 1973, in retaliation for American support of Israel in the Yom Kippur War, the Arab oil producers — acting as OAPEC — cut off oil to the United States, and crude roughly quadrupled, from about $3 a barrel to nearly $12. Six years later, in 1979, revolution in Iran choked supply again, and crude ran from around $14 toward $35. This differed from the first cause. Too many dollars is demand-pull: money pulls prices up from below. An oil shock is cost-push: the price is shoved up from the supply side, whether anyone spends a dollar more or not. And oil is underneath almost everything — every good that travels by truck, every fertilizer that grows the food, every synthetic fiber, made at the bottom out of petroleum. One barrel of crude reached a hundred lines in that notebook that never once said the word oil. That is the quiet cruelty of a cost-push shock: you cannot shop your way around it, because it hides inside the price of the shopping itself.

Now the third cause, the one the textbooks under-tell, because it turned a bad few years into a long decade. When people come to expect that prices will rise, they change what they do. A worker asks for a raise to cover the higher prices he knows are coming; the employer grants it, then lifts his own prices to cover the higher wage, which raises the cost of living, which justifies the next raise. Economists call it the wage-price spiral, and the dangerous word in it is expectation. And here is the dark part: the government tried to help and loaded the spring instead. On that same night in 1971, Executive Order 11615 froze wages and prices for 90 days. A freeze does not remove pressure; it holds the lid down while the pot keeps heating. The controls dragged on until they expired in 1974, and when the lid came off, the held-back prices leapt at once. The price of food alone rose about 14.5 percent in 1973 and again the year after. The freeze had not stopped inflation. It had delayed it, concentrated it, and taught every household to expect the jump — exactly the expectation that feeds the spiral.

You can put a number on the misery. The economist Arthur Okun added the inflation rate to the unemployment rate and called the sum the misery index. In 1974 it stood near 17; by 1980 it reached about 21, the worst in postwar memory. In the ledger, the spiral shows up as the cruelest line of all: the cost-of-living raise that was not a raise. The number on the paycheck went up, the family felt briefly rescued, and by the time the notebook was balanced the rescue had already been eaten.

So how did it end? Not gently. In 1979 a new Federal Reserve chairman, Paul Volcker, went after the money with everything he had, pushing the federal funds rate toward 20 percent. The 30-year mortgage, around 7 percent at the decade's start, reached 18.63 percent in October 1981, the highest in the record. It threw the country into a hard recession, with unemployment climbing toward 11 percent. But it worked: inflation, which peaked at about 13.5 percent in 1980, was back to about 6 percent for 1982. Breaking the fever meant strangling the dollars, which tells you which of the three causes was the engine, and which two were only the fuel.

Which brings us to the question you actually came for: could it happen again? The honest answer is that it could not happen the same way. The first cause, the monetary break, was a one-time event — Nixon could close the gold window because there was still a gold window to close, and that door is already shut. The second cause, a supply shock, can absolutely return, whether from oil, a microchip, or a failed harvest; it is a permanent feature of the world. The third cause, the spiral, lives entirely inside expectations, which are now the single thing every central banker watches most closely. Two of the three are structurally different today. One is not. That is not advice and not a forecast. It is a map — it tells you where to look, not what to do.

The decade has a name among the people who study it. They call it the Great Inflation. Its causes were three, they were specific, and they were never really a mystery. They were a collision. This is When Money Broke, where we decode how households survived economic crises through their real budgets and prices. If you want the next collision decoded the same way, cause by cause, in the numbers households actually lived — this is where it happens.