Inflation is a sustained rise in the general level of prices, which reduces the purchasing power of money over time. It is usually measured by the Consumer Price Index (CPI). A little inflation is normal — most central banks aim for about 2% a year.
What is inflation?
Inflation is the rate at which prices across an economy rise over time. When prices go up, each unit of currency buys less — so $100 does not stretch as far this year as it did last year. Economists track it mainly through the Consumer Price Index, which follows the average price of a fixed basket of goods and services that households buy.
What causes inflation?
There are two classic drivers. Demand-pull inflation happens when demand outstrips supply — too much money chasing too few goods. Cost-push inflation happens when the cost of producing goods rises, through higher wages, energy or raw materials, and firms pass those costs on to customers. Both push the general price level higher.
How much have prices been rising?
After a sharp spike earlier in the decade, inflation has cooled. In the United States, consumer prices rose 2.9% in 2024 and 2.7% in 2025 (US Bureau of Labor Statistics). Worldwide, the IMF expects global inflation to ease to about 3.7% in 2026. That is close to the roughly 2% that most central banks target as healthy.
Why inflation matters
Inflation quietly reshapes everyday life. It erodes savings and fixed incomes, because money loses value over time. It can also distort decisions if it is high or unpredictable. Yet mild inflation is generally seen as healthy: it encourages spending and investment and helps the economy avoid the opposite danger, deflation, when falling prices can stall growth. That is why central banks try to keep it low and steady rather than zero.
Key takeaways
- Inflation is a sustained rise in the general price level, reducing purchasing power.
- It is measured mainly by the Consumer Price Index (CPI).
- Its two main causes are demand-pull and cost-push pressures.
- Most central banks target about 2% inflation a year.
Frequently asked questions
Is a little inflation normal?
Yes. Most central banks aim for around 2% inflation a year, because mild, steady price rises support spending and wages while avoiding deflation, when falling prices can stall the economy. Very high inflation, however, is harmful.
Does inflation mean my money loses value?
Yes. As the general price level rises, each unit of currency buys fewer goods and services, so your purchasing power falls unless your income rises at least as fast as prices.
What is the difference between demand-pull and cost-push inflation?
Demand-pull inflation comes from too much demand chasing too few goods. Cost-push inflation comes from rising production costs, such as wages or energy, that firms pass on as higher prices. Both raise the overall price level.
Sources
- US Bureau of Labor Statistics, CPI 2025 in review — retrieved 2026-07-05 — bls.gov
- IMF, World Economic Outlook, October 2025 — retrieved 2026-07-05 — imf.org
- Encyclopaedia Britannica, Inflation — retrieved 2026-07-05 — britannica.com
Last updated: July 4, 2026
Leave a Reply