Your dollar bought less at the grocery store this year than last. The Federal Reserve added trillions to the money supply. These facts are connected, but understanding how requires grasping one of economics’ deepest puzzles: why does money have value at all when it cannot directly satisfy our needs?
You hand a bill to a merchant in exchange for bread. This simple act, repeated billions of times daily, reveals a profound mystery. The paper in your wallet feeds no one, yet everyone accepts it. Why?
For most of human history, money was a tangible commodity: precious metals, cattle, salt, shells—goods with inherent utility. Gold and silver served as money for millennia because people valued them as ornaments before anyone thought to use them in trade. Modern fiat currency—unbacked paper declared valuable by government decree—is a recent innovation spanning barely a century.
When the Federal Reserve chairman announces another round of monetary expansion, he acts on assumptions about money’s nature that would have seemed absurd to every generation before ours. Understanding what actually makes money valuable—and what happens when authorities manipulate it—reveals truths central to the current inflation debate.
Supply and Demand: The Foundation
Like any good, money’s value is determined by supply and demand. When the money supply increases while demand remains constant, each unit becomes less valuable—its purchasing power declines. This is not a complex theory, it is simple economics applied to money.
But what exactly is the “price” of money? It is purchasing power—the array of goods and services that money can buy. If a dollar purchases five pounds of rice or twenty minutes of labor, these exchange ratios constitute money’s price.
Yet money is no ordinary commodity. Unlike rice or labor, money’s utility lies solely in its exchange value. This creates consequences that central bankers consistently ignore.
The Special Nature of Money
Money differs fundamentally from other goods: it appears on one side of every transaction. This creates a counterintuitive effect that confounds monetary authorities. While more wheat feeds more people, more money merely dilutes the value of each unit. When the Fed doubles the money supply, prices increase unevenly. No new wealth is created.
Understanding this principle demolishes the notion that monetary expansion creates prosperity. The size of the money supply matters less than how the market adjusts to changes in its purchasing power. Yet policymakers act as if printing money were to generate real resources.
Understanding Subjective Value
Economic value originates in individual minds, shaped by personal preferences. You might value a family photograph more than your calculator, but you cannot quantify that difference. Value rankings are ordinal—first, second, third, etc.—not cardinal measurements with precise numbers.
Yet something remarkable happens in the marketplace. Market prices emerge as objective measures born from countless subjective valuations. Prices expressed in money become cardinal units—objective exchange ratios that anyone can observe and use in calculation.
This transformation from subjective preference to objective price is money’s essential function. When the Fed distorts the value of money through expansion, it corrupts this crucial information system.
The Puzzle of Money’s Value
Here we encounter a problem that troubled economists for generations. For most goods, we explain market value by supply and demand. People demand bread because it satisfies hunger, for example. People demand steel because it is used to build structures.
Money presents a different case. People demand money, not for direct consumption, but to exchange it for other goods. Money derives its value from its exchange value—its ability to be traded for things people actually want.
An apparent circularity emerges: Money is demanded because it offers purchasing power. But purchasing power means “value in exchange.” We seem to be explaining money’s value by reference to its value—circular reasoning that explains nothing.
This puzzle matters practically. If we cannot explain where money’s value comes from, how can we understand what happens when the Federal Reserve creates trillions of dollars from nothing?
The Regression Theorem: Breaking the Circle
Ludwig von Mises solved this puzzle with the regression theorem. Today’s demand for money depends on yesterday’s purchasing power. Today’s money value relies on what it could buy yesterday, and yesterday’s value depended on the day before. This chain eventually reaches solid ground. By regressing through time, we arrive at a point when money was an ordinary commodity used in barter, with value established through direct use rather than exchange. On the day a commodity first becomes money, it already has established purchasing power through voluntary barter.
Gold provides the clearest example. Before becoming money, gold was valuable as jewelry, decoration, etc. Its physical properties—durability, divisibility, portability, recognizability, etc.—facilitated its gradual adoption as a medium of exchange. As more people accepted gold, its monetary role expanded, always rooted in its original commodity value.
This foundation explains why credit money—promises to pay commodity money—could function effectively. Medieval merchants accepted bills of exchange because they represented claims on gold or silver.
Modern fiat currency attempts to sever this connection entirely. The dollar’s value today rests on its value yesterday, which ultimately traces back to 1971 when it was still (nominally) tied to gold. We are living on borrowed legitimacy—the fading memory of commodity backing.
Each quantitative easing program, each trillion-dollar expansion, further strains that connection. The Federal Reserve operates as if money’s value is whatever it declares, ignoring the historical foundation on which even fiat currency depends.
Objective Exchange Value: A Market Phenomenon
Money’s purchasing power arises from four factors: the supply and demand for goods and the supply and demand for money. These arise from voluntary choices by individuals to exchange goods and services—not from central bank declarations.
If a dollar buys five stamps for one person, it buys five stamps for anyone. Personal preference remains subjective, but the dollar-stamp ratio is objective and observable. This objective exchange value rests on subjective foundations—prices emerge from interactions of buyers and sellers, each acting on their own valuations.
When the Federal Reserve manipulates the money supply, it disrupts this organic market process—purchasing power changes not through voluntary adjustment but through imposed expansion.
The Dynamics of Money’s Value
When the money supply increases, individuals hold more money relative to their demand for it. They have a relative surplus of money and a relative shortage of goods.
As more people hold extra money, its marginal utility declines. They become stronger buyers, willing to pay more, which raises prices and reduces the money’s exchange value. The process unfolds gradually as new money circulates.
Critically, this does not affect all prices simultaneously or proportionally. Those who receive new money first—government contractors, financial institutions, asset holders, etc.—benefit by purchasing at old prices. Those who receive it later—wage earners, pensioners, savers, etc.—suffer, facing higher prices before their incomes adjust.
This is not a side effect, it is how monetary expansion works. The mechanism that transmits new money through the economy necessarily creates winners and losers. When you hear that the Fed “stimulated the economy” with monetary expansion, understand that it redistributed wealth from ordinary Americans to those closest to the monetary spigot.
This dynamic applied when Roman emperors debased silver coins. It applies when the Federal Reserve adds zeros to bank reserves. The principle remains constant: increasing supply redistributes wealth from late receivers to early receivers.
Conclusion
Current inflation is not mysterious. When the Federal Reserve expanded the money supply by trillions, it set in motion the exact process described by Austrian theory a century ago: Prices rise unevenly, asset holders benefit early, workers and savers suffer the consequences.
When you hand over money for goods—whether analyzing today’s dollar or reflecting on historical gold—you participate in a sophisticated social institution that evolved through countless individual choices. Money’s value reflects not only today’s supply and demand but also the accumulated history of human cooperation.
The regression theorem reveals why money’s value cannot be sustained by decree alone. Supply-and-demand analysis shows that monetary expansion creates redistribution rather than prosperity. The non-neutrality of money explains why the effects of inflation are never evenly distributed.
This understanding reveals why sound money matters: not as an abstract preference, but as the foundation of honest exchange and economic coordination. When authorities manipulate money’s value, they corrupt the price system, redistribute wealth through inflation, and strain the historical legitimacy on which even fiat money depends.
The Federal Reserve operates as if these principles do not apply. The persistence of inflation suggests otherwise. Understanding why money has value at all is the first step toward understanding why its manipulation causes the economic pain we see today.
