The Nixon Shock & the Birth of Fiat

Last lesson we left the world in a clever-but-doomed arrangement: the dollar pegged to gold at $35 an ounce, and every other major currency pegged to the dollar. Gold was the anchor; the dollar was the chain; the rest of the world was the boat. And the Triffin dilemma was the leak — the world needed more and more dollars to trade, but the United States held only so much gold to back them. You can’t print more gold. You can print more dollars. Sooner or later those two facts collide. This lesson is the collision: the Sunday night in 1971 when the chain was cut and money floated free of metal forever.

Pretest: place your bet

The run on Fort Knox

A bank run is what happens when too many people show up demanding their money at once and the vault can’t satisfy them all. What unfolded in the late 1960s was a country-sized bank run — except the depositors were foreign governments, the “deposits” were dollars, and the vault was Fort Knox.

Here’s how it built up. The U.S. was spending heavily on the Vietnam War and President Johnson’s Great Society welfare programs — and largely paying for it by printing money rather than raising taxes. More dollars chasing the same goods means inflation (a general rise in prices), and U.S. inflation climbed through the late 1960s. Foreign holders did the math: the dollar was clearly losing purchasing power, yet they could still legally swap each $35 for a guaranteed ounce of gold. Gold suddenly looked like the better deal. France’s President Charles de Gaulle led the charge, openly redeeming France’s dollars for U.S. gold and even sending warships to ferry it home. Others followed.

Worked example: the math that broke the promise

The promise was simple: any official dollar could be turned into gold at $35 per ounce. Watch what that promise required.

By 1971 the U.S. held roughly 8,000 tonnes of gold — down from about 20,000 tonnes in the early 1950s — while foreign governments held dollar claims worth several times the value of that remaining gold. Put it in one number: if everyone holding dollars had lined up at the window at once, the vault would have emptied long before the line did. A promise you can only keep if nobody asks is not a promise. It’s a bluff. And by 1971 the world had called it.

When it matters

This is the universal anatomy of a confidence crisis — and it’ll recur all over finance. Whenever the claims on an asset can grow faster than the asset itself (bank deposits vs. cash reserves, a stablecoin vs. its backing, a fund vs. its liquid holdings), you’ve recreated 1971 in miniature. The trigger is never “we ran out”; it’s “everyone tried to leave at once.” Spotting that pattern early is half of risk management.

August 15, 1971 — closing the gold window

So Nixon pulled the plug. On a Sunday evening, August 15, 1971, he went on national television and announced he was “suspending temporarily the convertibility of the dollar into gold.” In plain English: the United States would no longer hand out gold for dollars at any price. The window where central banks queued to swap paper for metal — slammed shut. (It was billed as “temporary.” It is now over fifty years temporary.)

He bundled it with two other shocks to soften the blow at home: a 90-day freeze on wages and prices (to fight inflation by decree) and a 10% surcharge on imports (to pressure other countries into letting the dollar fall). Markets reeled. The press dubbed the whole package the Nixon shock.

This is the hinge of the entire course. For thousands of years, money had been something — a coin of silver, a claim on gold in a vault. After this address, the world’s reserve currency was a claim on nothing physical at all. Money had cut its last anchor to metal.

Press “Close the gold window” and watch gold drift off and the currencies float loose. That snap is the single most important event in this course — everything afterward, including the cash in your pocket today, lives on the right-hand side of that button.

There was one last attempt to glue it back together. The Smithsonian Agreement of December 1971 tried to rebuild fixed rates, devaluing the dollar to $38 and later $42 per ounce of gold — Nixon called it “the most significant monetary agreement in the history of the world.” It lasted about a year. The pressures hadn’t gone anywhere, and by 1973 the major currencies were floating for good. The age of fixed pegs to gold was over.

What “fiat, floating” actually means

Two ideas got married in 1973, and people blur them, so let’s split them apart.

Fiat is about backing: the money isn’t redeemable for any commodity (we defined this last course — value from trust + decree + network). Floating is about price: what one currency costs in another isn’t fixed, it’s set by a live market.

A fixed (pegged) exchange rate is one a government promises to hold at a set level — like $35/oz, or “we’ll keep our currency at exactly 2 marks to the dollar.” A floating exchange rate lets the price move freely as buyers and sellers trade the currencies; in practice most are managed floats, where a central bank mostly lets the market decide but occasionally nudges. Today, currency prices update minute by minute, like share prices.

Worked example: why EUR/USD wiggles

“EUR/USD = 1.10” means one euro costs $1.10. That price is just the meeting point of everyone wanting to buy euros and everyone wanting to sell them.

• Suppose European interest rates rise, so parking money in euros now pays more. Investors worldwide want euros, so they buy them — more demand, fewer sellers. The price gets bid up: EUR/USD drifts from 1.10 toward, say, 1.15. The euro strengthened; the dollar weakened.
• Now imagine Europe slides toward recession. Money flees euros, sellers pile in, demand dries up. The price sinks toward 1.05. The euro weakened.

Nobody decreed any of this. It’s a continuous auction — same supply-and-demand machine that prices apples, just with currencies. That’s a float.

When it matters

Every time you see a holiday exchange rate move, an importer complain about a “strong dollar,” or a country’s currency “collapse,” you’re watching the float in action. And the fixed-vs-floating choice is one of the biggest decisions a country makes: a peg buys stability but can shatter spectacularly (you’ll meet currency crises later); a float absorbs shocks gently but hands you volatile prices. Neither is free.

The whole world is now fiat

Step back. As of 1973, every major currency on Earth is fiat and floating. There is no longer any government money you can redeem for a fixed amount of metal. The dollar, the euro, the yen, the pound — all of them are worth something for the three reasons we nailed down last course: trust that they’ll still buy things tomorrow, government decree that they’re money, and the network effect that everyone else takes them.

This handed humanity a genuine superpower and a genuine danger, and they’re the same coin.

• The superpower: when the economy stalls and people stop spending, a central bank can now create money and push interest rates down to revive it — no gold supply standing in the way. Under the gold standard, a slump could force you to do nothing while the economy sank. Fiat gave governments a fire extinguisher.
• The danger: the only thing that stopped a government from printing too much money used to be physics — you couldn’t conjure gold. Now? Nothing physical stops them. The brake is purely self-discipline. Over-print, and you get the slow theft of inflation — or, at the extreme, the wheelbarrows-of-cash horror of hyperinflation.

The 1970s were the world finding out, the hard way, what happens when you remove the limiter and don’t yet know how to drive.

The 1970s: the dollar falls, gold soars, stagflation bites

With the anchor gone, three things happened more or less at once.

The dollar fell against other currencies — exactly what a float lets it do once the market doubts it. Gold soared: freed from its $35 leash, the gold price climbed all the way to roughly $800 an ounce by 1980 — a more than twentyfold jump. (Gold didn’t get more valuable so much as the dollar got worth less; same event, two descriptions.)

And then the nasty surprise: stagflation. Economists had assumed inflation and unemployment moved in opposite directions — a hot economy has rising prices but lots of jobs; a cold one has falling prices and few jobs. The 1970s served up both miseries at once: stagnation + inflation = stagflation. U.S. inflation hit roughly 13% in 1979–80 while unemployment stayed high. The textbooks had no box for it.

Why it happened

Two forces collided:

• Oil shocks. In 1973 and again in 1979, oil prices spiked violently (an embargo, then the Iranian Revolution). Oil is an input to almost everything, so its price jump pushed up prices across the board (inflation) while simultaneously choking output and jobs (stagnation). This is a supply shock — costs rise even though demand hasn’t.
• Loose money. The newly unanchored central banks kept money cheap, trying to fight the unemployment side — which just poured fuel on the inflation side. Worse, people came to expect high inflation, so workers demanded big raises and firms pre-emptively raised prices, and the expectation became self-fulfilling. That feedback loop is the wage-price spiral.

Slide the chart around if you like, but the lesson is stark: at 13% a year, money loses about half its purchasing power every five-ish years. That is the danger half of the fiat coin, made painfully concrete.

When it matters

Stagflation is the nightmare scenario policymakers still dread, because the two cures conflict: fighting inflation means tightening (raising rates), which worsens unemployment; fighting unemployment means loosening, which worsens inflation. Any time you hear “the central bank is in a bind,” it’s usually some echo of this trap. The 1970s are the reason “anchored inflation expectations” is treated as sacred.

Taming it: the birth of modern monetary policy

Someone had to grab the wheel. In 1979 Paul Volcker took over the U.S. Federal Reserve and did the brutal, unpopular thing: he jacked the federal funds rate (the Fed’s main interest-rate lever) up to around 20% in 1980–81.

The logic: punishingly high interest rates make borrowing expensive, so people and businesses spend and invest less, demand cools, and prices stop spiraling. It worked — U.S. inflation fell from ~13% to under 4% by 1983 — but the medicine was savage: a deep recession and unemployment near 10%. Volcker took the political beating and broke the back of inflation anyway. The episode became the founding legend of modern central banking: a credible central bank willing to inflict short-term pain can kill inflation.

Out of that experience came two ideas that are now the global standard — and together they form the fiat era’s replacement for the gold anchor.

Central bank independence

Central bank independence means the institution that controls the money supply is shielded from day-to-day political control. Why does that matter? Politicians facing an election are perpetually tempted to print money for a feel-good boom now and let the inflation bill arrive later (ideally on someone else’s watch). An independent central bank can take away the punch bowl when the party gets too wild, precisely because it doesn’t have to win the next election.

Inflation targeting

Inflation targeting is a central bank publicly committing to a specific inflation number — almost universally about 2% per year — and then adjusting interest rates to hit it. New Zealand pioneered it in 1990, and country after country adopted it. The target is the new anchor: instead of promising “your dollar is worth a fixed weight of gold,” the central bank promises “your dollar will lose value at a slow, steady, predictable ~2% a year — and we’ll move heaven and earth to keep that promise.”

That predictability is the whole trick. If everyone believes inflation will be ~2%, they plan and price as if it will be — and the belief becomes self-fulfilling, the good twin of the wage-price spiral. A credible, independent central bank with a public target is the fiat era’s substitute for the gold standard: not a chunk of metal, but an institution’s hard-won reputation. The anchor went from physical to psychological.

When it matters

This is why, whenever inflation flares, headlines obsess over what the central bank will do and whether people still believe it. The entire stability of modern money rests on that credibility. It’s also why central-bank independence is fiercely defended — politicians leaning on the printing press is the exact failure mode the post-1971 system was rebuilt to prevent.

Sort the eras

Fill in the story

Recap

Key Takeaways