Why Central Banks Want a Little Inflation, Not None
Falling inflation means prices climb more slowly, not that they come back down. Most economists prefer it that way, and the reasons are less obvious than they sound.
In short
What happened. A wave of inflation that began in mid-2021 peaked in the United States and the eurozone in the second half of 2022 and fell sharply in 2023. Prices did not fall back.
What it means. Falling inflation means prices rise more slowly, not that they drop. Most economists do not want zero inflation. They prefer a low, steady rate, and the US Federal Reserve targets 2%.
Risks and impact. Anyone holding cash or waiting for a yearly pay rise loses buying power between adjustments. Where food drove the rise, low-income households had to cut spending on other goods.
What can be done. Look up your central bank’s target and the latest official inflation figure. Compare them with your last pay rise and the interest on your savings. Knowing the gap is the useful part.
What to watch. Whether the official rate settles near the central bank’s target over the coming year, or drifts away from it again.
Shown as a summary because of your reading settings.
What happened
Inflation is a rise in the average price of goods and services. It is measured with a price index, usually a consumer price index (CPI). When the general price level rises, each unit of money buys less. The inflation rate is the yearly percentage change in that index.
The last big wave began in mid-2021, after the COVID-19 pandemic. Many countries saw their highest rates in decades. The US peak was its highest since 1981. The eurozone’s was the highest since its records began in 1997. Russia’s invasion of Ukraine in early 2022 pushed up the prices of oil, gas, fertiliser and food. In the US, fuel prices rose 49% between January and June 2022. In countries where food made up much of the rise, low-income households had to cut spending on other goods.
Central banks answered by raising interest rates hard. The Bank of Japan was the exception: it held its rate at −0.1% until 2024. Inflation in the US and the eurozone peaked in the second half of 2022 and fell sharply in 2023. As of July 2025, US inflation stood at 2.7%, against the Federal Reserve’s target of 2%.
What the evidence supports
Where the sources agree: inflation has more than one engine. The Inflation article lists growth in the money supply, swings in demand, supply shocks such as energy crises, sharp cuts in interest rates, and expectations, which can fulfil themselves. The 2021–2023 article finds several of these at work at once: broken supply chains, pandemic stimulus, the energy shock and, possibly, housing shortages.
What rests on a single source: researchers at the Federal Reserve Bank of San Francisco estimated that $5 trillion of US aid spending added 3 percentage points to inflation by the end of 2021. The same researchers argued the spending was still necessary, because deflation would have been harder to manage. That is one team’s estimate, not a settled figure.
What is still disputed: how much price gouging contributed, and whether the pressure was ever “transitory”, the word Fed chair Jerome Powell used in 2021. Both pages are encyclopedia summaries. They record the argument; they do not settle it.
How the story is being framed
“It’s always about printing money.” Milton Friedman said in 1963 that inflation “is always and everywhere a monetary phenomenon.” The view fits the great historical cases: Roman coins diluted with cheaper metal, or the Yuan dynasty printing money to pay for its wars. It fits recent data less well. The broad money measure M2 grew about 45% from 2010 to 2015, yet inflation declined. In December 2021, Powell said the old link between money and prices “ended about 40 years ago.”
“It was supply, not demand.” In June 2022, BlackRock’s chief executive Larry Fink argued that US demand had stayed steady and that overseas supply problems were the main cause. The pattern of November 2021 supports part of this: US durable goods prices were up 14.9%, services only 3.8%. It underplays the stimulus estimate above. Like most voices in this debate, he speaks from somewhere.
“A little inflation is useful.” This is the mainstream view and the least intuitive one. Most economists prefer a low, steady rate rather than zero. The Inflation article gives the reasons: it helps the job market adjust, encourages lending and investment over hoarding cash, and leaves a central bank room to act. Its weak point is the person living on a fixed income, for whom “a little” adds up every year.
The background
Start with the word. It comes from the Latin inflare, to blow into. Physicists later borrowed it: Alan Guth proposed cosmic inflation in 1979, an early universe in which distances doubled every 10⁻³⁷ seconds. Economic inflation is gentler, but the idea is similar. Everything stretches at once.
That “at once” matters. If people buy more cucumbers than tomatoes, cucumbers get dearer and tomatoes cheaper. The Inflation article is clear that this is a change in taste, not inflation. Inflation concerns the money itself.
So why would anyone want it? Two of the article’s reasons are worth unpacking. The first is “nominal wage rigidity”: pay is rarely cut in money terms. With mild inflation, a struggling firm can hold wages still while their real value slips, instead of laying people off. The second is room to act. Central banks fight downturns by cutting interest rates, and rates already near zero leave little to cut. Low positive inflation lowers the risk of a “liquidity trap”, where monetary policy stops working.
Since the 1980s, inflation has been held low and stable in countries with independent central banks. Economists call that period the Great Moderation. The cost still lands somewhere: the Inflation article notes that workers lose purchasing power between pay contracts.
Now the arithmetic. At a steady 2%, prices double in about 35 years. Cash left in a drawer for ten years at 2% buys about 18% less. And economists cited in the 2021–2023 article say a return to pre-pandemic prices would need a period of deflation, usually associated with recession. Lower inflation slows the climb. It does not reverse it.
The deeper story
The question under inflation is not really about prices. It is about trust. A banknote is a promise that it will buy something tomorrow. Inflation is the slow renegotiation of that promise, usually without anyone signing anything.
Rome renegotiated by stealth. When Nero became emperor in AD 54, the denarius was more than 90% silver. By the 270s hardly any silver was left. Each coin looked the same and said the same; it simply held less. The government gained, and whoever held the coins paid.
Centuries before Nero, the prophet Isaiah used that very picture for Jerusalem: “Your silver has become dross, your best wine mixed with water” (Isaiah 1:22). In the next verse he turns to rulers who love bribes. The image is of something that keeps its appearance while losing its substance. The book of Proverbs states the ordinary rule of the market plainly: “A false balance is an abomination to the Lord, but a just weight is his delight” (Proverbs 11:1).
Neither text was written about central banking, and neither says what an inflation target should be. A modern 2% target is also not debasement by stealth. It is announced in advance and measured in public every month. That difference is real.
What the old texts keep asking is narrower, and still current. Does the measure stay honest? And does the person with the least power know what is happening to their money? A published inflation figure is, in its way, a weight laid openly on the scale.
Something to sit with
When did you last compare what your savings earned with what prices did over the same year?
If a promise loses value slowly enough that nobody notices, has it been kept?
Try this today: find your country’s latest official inflation figure and write it next to your last pay rise.
Sources
- Wikipedia — Inflation — https://en.wikipedia.org/wiki/Inflation
- Wikipedia — 2021–2023 inflation surge — https://en.wikipedia.org/wiki/2021–2023_inflation_surge
- Wikipedia — Cosmic inflation — https://en.wikipedia.org/wiki/Cosmic_inflation
We report facts from the sources above in our own words and link to the originals. Interpretation is ours, not theirs.
According to economists cited in the article, what would usually be needed for prices to return to pre-pandemic levels?
The 2021–2023 inflation surge article says a return to pre-pandemic prices would require a deflationary period, which is usually associated with recession. Hitting the target only slows the rise.
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