Inflation
The tax nobody votes for
Description
In 1970, a US dollar could buy a gallon of gasoline, a pound of bread, and leave some change. In 2025, the same three items cost roughly nine dollars. The dollar did not get worse at buying things because the things became harder to produce; most of them became much easier to produce over the same period. The dollar got worse at buying things because there are now about ten times as many dollars in circulation as there were in 1970, chasing the same basic set of goods. This is inflation the progressive loss of purchasing power of a currency over time and it is one of the most consistent features of modern economic life.
Inflation is unlike most economic phenomena in that it affects every household, every wage, every savings account, every price in the economy simultaneously. A person who pays no attention to macroeconomics is still paying, in full, for whatever the inflation rate happens to be. A household saving money in a checking account is losing purchasing power every year at a rate set by the combined decisions of central banks, legislators, and global commodity markets. The mechanism is invisible to most people who are affected by it, which is part of why it functions politically as a tax one that generates revenue for governments and distributes losses across the population without ever being voted on.
Understanding inflation is prerequisite to making good financial decisions. The nominal return on an investment that does not keep up with inflation is a real loss. A savings account paying one percent interest during a five-percent inflation year is losing four percent of purchasing power annually. A fixed-rate thirty-year mortgage becomes dramatically cheaper to repay as inflation erodes the real value of the debt. A pension paying a fixed amount becomes progressively worthless as inflation compounds. Every major financial decision is implicitly a decision about what inflation will do over the relevant period, and most people make these decisions without recognizing that they are doing so.
The question we're asking: what is inflation, why does it happen, and why does it matter for ordinary people?
What we'll see: the underlying mechanism, the policy tools that control it, the distributional consequences it produces, and why it has become politically contested again.
Table of contents
01The mechanism
The simplest explanation is that prices rise when more dollars chase the same goods. If a year's goods are worth a trillion and the money supply is a trillion, prices are roughly stable. If the money supply doubles while goods stay at a trillion, prices eventually double. The specific mechanism is complex and contested, but the basic arithmetic has held across most historical periods.
The sources of extra money are several. Central banks have the legal authority to create money and do so for various reasons to stimulate economies during recessions, to finance government deficits, to maintain stability during crises. Commercial banks also create money through lending. Government spending financed by new debt, if the debt is ultimately bought by the central bank, increases the money supply. Each channel can drive inflation if money creation runs ahead of the production of goods and services.
02The policy tools
Modern inflation management is primarily the responsibility of central banks. The Federal Reserve, the European Central Bank, and their counterparts have a mandate for stable prices, usually defined as two percent annual inflation. When inflation exceeds target, central banks raise interest rates to cool the economy making borrowing more expensive, reducing consumption and investment, eventually slowing price growth. When inflation falls below target or the economy weakens, central banks lower rates to stimulate activity.
The interest-rate mechanism works with lags. A rate increase today affects borrowing over following months, economic activity over a year or two, and the full inflation response over something like two years. Central banks are always setting policy on forecasts of future conditions rather than current reality, and the forecasts are frequently wrong. The 2021-2022 episode was a significant forecasting failure the Fed called the increases transitory and was slow to raise rates, which allowed inflation to compound. The subsequent rate-hiking cycle was then more aggressive than needed had the initial response been faster.
03The distributional consequences
Inflation is not a neutral tax; it redistributes wealth in specific ways. The clearest winners are fixed-rate debtors. A homeowner with a thirty-year fixed-rate mortgage benefits substantially because nominal payments shrink relative to inflated wages. Governments with fixed-rate debt benefit similarly. The clearest losers are holders of cash and fixed-rate bonds. Someone with savings in a checking account loses purchasing power at the full inflation rate. A retiree on a fixed pension loses real income every year.
The effect on wages depends on bargaining power. Workers in strong labor markets or with collective bargaining can demand wages matching inflation, preserving purchasing power. Workers without low-wage, non-union, in cost-cutting firms often see wages lag inflation for years, amounting to real wage cuts. The distributional effect depends heavily on labor-market institutions and individual bargaining, which means inflation often widens existing inequalities rather than reducing them.
04Why inflation has become contested again
From roughly 1985 to 2020, inflation was a largely solved problem in developed economies. Central bank independence, credible inflation targeting, and the disinflationary effects of globalization and technology kept annual inflation in the two-to-three percent range for decades. A generation of economists and policymakers came of professional age believing that the inflation problem had been diagnosed and was being competently managed. The post-COVID inflation surge of 2021-2023 overturned this comfortable consensus and produced a new round of debate about what went wrong, what the right policy response is, and whether the pre-2020 framework was actually correct.
One view is that the 2021-2023 episode was primarily a supply-shock event the pandemic disrupted global supply chains, Russian aggression disrupted energy markets, and these shocks produced price increases that the standard monetary framework was not well-designed to address. On this view, the central-bank framework mostly worked; the specific shocks were unusual, and the framework's response was roughly appropriate given the information available. The inflation problem has largely been resolved, and the framework can continue.
05Conclusion
Inflation matters as a subject because it is the ambient tax that every household pays regardless of their attention to it, and because the specific choices about how to manage it have enormous distributional consequences. Households that understand inflation and can structure their financial lives accordingly owning real assets, borrowing at fixed rates, indexing their incomes where possible preserve their wealth through inflationary periods. Households that do not understand it lose wealth at the full rate of whatever inflation happens to be. The knowledge asymmetry is one of the meaningful contributors to wealth inequality, and it is one of the places where basic financial literacy produces substantial practical differences.