What Is Inflation

Last updated: March 31, 2026

Quick Answer: Inflation is the rate at which prices rise over time, reducing the purchasing power of money. When inflation is 3%, something that cost $100 a year ago now costs $103. Central banks typically target 2% annual inflation as healthy.

Key Facts

Overview

Moderate inflation (1-3%) is normal and healthy — it encourages spending and investment. High inflation erodes savings and hurts fixed-income earners.

Causes

Demand-pull: Demand exceeds supply, prices rise.

Cost-push: Production costs increase, businesses pass costs to consumers.

Monetary: Money supply grows faster than economic output.

How It's Measured

The CPI tracks average price changes of common goods — food, housing, transport, medical care. Core CPI excludes volatile food and energy.

Winners and Losers

Related Questions

What is hyperinflation?

Inflation exceeding 50% per month. Prices double in days. Examples: Zimbabwe 2008 (79.6 billion percent monthly), Weimar Germany 1923.

How does inflation affect my savings?

Inflation reduces the purchasing power of money in savings accounts, meaning your dollars buy less over time. If savings earn interest below the inflation rate, you lose purchasing power in real terms. Investing in assets that outpace inflation helps protect wealth.

What is the difference between inflation and deflation?

Inflation is rising prices and declining purchasing power, while deflation is falling prices and increasing purchasing power. Though deflation seems beneficial, it often leads to economic stagnation, reduced spending, business failures, and unemployment.

Why do central banks target 2% inflation?

Central banks target 2% inflation because it encourages spending and investment while remaining low enough to avoid instability. This moderate rate discourages excessive cash hoarding, promotes economic growth, and provides a buffer against accidental deflation.

Sources

  1. Wikipedia — InflationCC-BY-SA-4.0
  2. BLS — CPIpublic_domain