The Long History of Inflation and Why Governments Always Cause It

In 301 AD, the Roman Emperor Diocletian issued the Edict on Maximum Prices, a sprawling price-control decree that listed legally permitted maximum costs for everything from a pound of pork to the daily wage of a sewer cleaner. The punishment for charging more was death. Within months, merchants had vanished from markets across the empire. Goods disappeared from shelves. The edict became one of history’s most spectacular policy failures — not because Diocletian was unusually foolish, but because he was doing exactly what rulers always do when their monetary mismanagement creates inflation: blaming the price signal rather than the money supply.

That episode crystallizes something essential about the relationship between governments and inflation. It is not a modern phenomenon, not a product of central banking, not a consequence of financialization or global supply chains. It is the oldest economic story there is, and its plot never changes: rulers need more money than their citizens will willingly give them, so they manufacture it, and the result is always the same.

The Mechanics Are Ancient, Not Modern

The Roman denarius began the first century AD as a silver coin containing roughly 3.4 grams of pure silver. By the reign of Gallienus in the 260s, it contained perhaps 2 percent silver — the rest was bronze with a thin silver wash that wore off in a season’s worth of handling. This was not accidental degradation. It was a deliberate policy of debasement, conducted by successive emperors who needed to pay legions, fund wars, and maintain the bloated administrative apparatus of a continental empire.

The process was straightforward. The mint would take in old coins, melt them, add base metal, and strike more coins from the resulting alloy. A hundred pounds of silver became two hundred pounds of coin. The emperor could pay twice as many soldiers. The soldiers spent their coins, merchants noticed the metal content was lower, prices rose, and the real purchasing power of the next pay cycle had already shrunk. To maintain the same real wage bill, the emperor debased again. The spiral was self-reinforcing.

This is not analogous to modern money printing. It is identical to it. When a central bank buys government bonds by crediting reserve accounts — the process called quantitative easing — it is creating new monetary units from nothing and injecting them into circulation in exchange for government obligations. The mechanism differs in its technical details. The underlying logic is Diocletian’s: convert a future liability into a present payment and let the money supply absorb the difference. The holders of existing currency pay through purchasing power erosion. They just do not see it the way a Roman merchant felt the lightness of a new denarius.

What makes the modern version harder to see is precisely its abstraction. You cannot hold a bank reserve account and notice it has less metal than last year. Inflation statistics lag the money supply by months or years, and they are compiled by the same governments that benefit from the delay. By the time the price signal arrives in consumer goods, the political credit for the original spending has long since been collected.

Why Governments Are Structurally Incapable of Resisting It

The incentive structure facing any government is permanently biased toward monetary expansion. Spending produces immediate, concentrated, visible benefits — a bridge is built, a war is won, a constituency is paid. Taxation produces immediate, concentrated, visible costs — a taxpayer notices exactly what was taken from them. Inflation spreads its costs diffusely across all holders of the currency, with a time lag, through a mechanism most citizens cannot directly observe or attribute.

Given this structure, it would be extraordinary if governments did not inflate. The rational political actor, maximizing present power while discounting future costs, will always prefer inflation to taxation when the choice is available. The historical exceptions — periods of genuine price stability — are the anomalies that require explanation, not the inflationary norm.

Medieval Florence presents an instructive case. The Florentine florin, introduced in 1252, maintained its gold content almost exactly for two and a half centuries. It became the reserve currency of medieval European commerce. The reason was not virtue but constraint: Florence’s merchant oligarchs, unlike monarchs, could not compel taxation by force, and their commercial credit depended absolutely on a stable unit of account. Their economic survival required sound money. The moment you give a governing entity both the power to create money and the ability to avoid short-term political accountability for doing so, the florin story ends and the denarius story begins.

This is why the independence of central banks, when it exists and when it is meaningful, matters enormously — and why it is always politically contested. An independent central bank imposes a constraint on the government’s ability to monetize deficits. That constraint is experienced by the executive as interference. Every government in history that has faced a serious fiscal crisis has found a way to subordinate its central bank, whether by legislation, by appointment, by informal pressure, or by simply ignoring the institution’s stated preferences.

The Inflation Tax and Who Actually Pays It

Inflation functions as a tax, and like all taxes, its incidence falls unequally. The group that pays most severely is the one with the least ability to reposition: holders of fixed-income obligations, long-term savers in cash or nominal bonds, workers whose wages lag price adjustments, and pensioners on defined-benefit schedules that adjust imperfectly to real costs.

The group that benefits is almost the mirror image: borrowers with fixed-rate debt, owners of real assets whose prices rise with or ahead of the general price level, and the government itself, whose outstanding debt stock is denominated in nominal terms and deflates in real value.

This distributional pattern is not incidental. It is structural, and throughout history the inflation-producing class — emperors, monarchs, post-war democracies, emerging-market governments — has overwhelmingly been a borrower and landowner class. When Henry VIII dissolved the English monasteries and debased the coinage simultaneously in the 1540s, he was not running two separate policies. He was running one: the concentration of real assets while diluting the nominal claims of creditors and the mercantile class. The price revolution that followed across the sixteenth century — long attributed to New World silver inflows — was significantly amplified by the competitive debasements of European monarchs who recognized the game Henry was playing and joined it.

The people who bear the inflation tax are rarely the people who voted for the spending it finances. This asymmetry is the political genius of monetary expansion. A new road in a swing constituency is a direct transfer from the entire money-holding population to that constituency’s voters, but it does not appear in any tax assessment and generates no organized opposition. The diffuseness of the harm is the policy’s greatest political asset.

The Velocity Problem and Why Inflation Is Never Smooth

Every account of inflation eventually confronts the question of velocity: why does new money sometimes produce rapid price rises and sometimes seem to disappear without inflationary consequence? The answer lies in where new money goes and how quickly holders choose to spend versus hold it.

When monetary expansion inflates asset prices rather than consumer prices, inflation is politically invisible even as it is economically severe. A central bank creating reserves that flow into equity markets, real estate, and financial instruments produces devastating price increases — for anyone trying to buy a house, acquire productive assets, or fund a pension — without showing up prominently in headline consumer price indices. This is not a feature of modern financial architecture that makes inflation more benign. It is a feature that makes it more politically durable by hiding its incidence in asset markets where the victims have less political voice than grocery shoppers.

The Weimar hyperinflation of 1921-1923 remains the canonical cautionary tale because its velocity was visible: prices doubled, then doubled again, within weeks. But the hyperinflation was not unusual in its cause — Germany printed money to pay reparations after World War I — only in its speed. The speed resulted from a collapse in confidence that triggered a simultaneous exit from the currency. Everyone tried to spend marks before they lost more value, which accelerated the loss of value, which accelerated the spending. The monetary expansion itself was the tinder; the velocity shift was the match. Slower inflations avoid the fire but not the fuel accumulation.

Japan since the 1990s demonstrates the opposite: massive monetary expansion with low consumer price inflation, because monetary velocity collapsed. Asset prices inflated in the 1980s, then deflated; subsequent money creation was absorbed by financial system repair and household deleveraging. The money went nowhere useful. The lesson is not that monetary expansion is harmless, but that its harms are channeled differently depending on where in the economy confidence has collapsed and where it survives.

What Sound Money Actually Requires

Monetary stability has been achieved historically in one of three ways: commodity backing that prevents expansion beyond physical supply, institutional independence robust enough to survive political pressure, or genuine fiscal balance that removes the government’s motive for monetary manipulation. The third is the most reliable and the rarest.

The gold standard, for all its rigidities, worked precisely because it imposed an exogenous constraint that no government could override without visibly abandoning it — which carried its own political cost. When countries left gold in the twentieth century, they did not do so by stealth. They announced it, usually in wartime, and the public understood that the anchor had been cut. Modern fiat systems have no equivalent moment of accountability. The central bank can adjust its inflation target, redefine its preferred index, extend its balance sheet, or alter its communication framework without any single act that a non-specialist can identify as the equivalent of leaving gold.

This is not an argument for a return to commodity money, which carries genuine costs in inflexibility. It is an observation about the structure of accountability. When the anchor is visible and specific, abandoning it is a legible political act. When the anchor is a target range defined by the same institution that sets it, maintained by appointees selected by the government that benefits from flexibility, the accountability mechanism is circular. The history of inflation is ultimately a history of principal-agent problems: someone is given the power to manage money and faces incentives to abuse that power, and the institutions designed to prevent abuse are always subordinate, ultimately, to the political entities they are supposed to constrain.

Diocletian’s edict failed because prices are information, and information cannot be repealed by decree. The Roman merchant hiding his goods rather than selling at a loss was not a criminal or a profiteer; he was reading the monetary system correctly and behaving accordingly. Every inflation in history has produced the same response — people exit the currency, seek real stores of value, and protect themselves individually from a systemic problem. The systemic problem never resolves itself without the underlying fiscal cause being addressed. It only transforms.