Political Glossary

Inflation

Inflation is the rate at which the general level of prices for goods and services rises over a given period, reducing the purchasing power of a unit of currency. It is typically measured by indexes such as the Consumer Price Index (CPI).

Economy
Updated Jun 18, 2026
In plain English

Inflation means your money buys less than it used to because prices have gone up.

Simple example
U.S. inflation peaked at about 9.1% in June 2022, according to the Bureau of Labor Statistics, before easing in the following years while prices remained above pre-2021 levels.
Why it matters
What the term actually changes.
Erodes Paychecks

When prices rise faster than wages, households can afford less even if their income stays the same.

Uneven Burden

Inflation hits lower- and middle-income households hardest because essentials like food, rent and gas take up a bigger share of their budgets.

Shapes Politics

Voter perceptions of inflation often influence elections and drive debates over government spending, taxes and trade.

How it works
The mechanics, in practice.
Measured By Indexes

Government agencies track price changes in a basket of common goods and services, producing monthly figures like the CPI.

Prices Stay Higher

Even when the inflation rate slows, prices that already rose typically do not return to earlier levels — they just rise more slowly.

Many Causes

Inflation can stem from strong consumer demand, higher production costs, supply shortages, or expansion of the money supply.