What Is Inflation
Last updated: March 31, 2026
Key Facts
- The US Federal Reserve targets 2% annual inflation
- Inflation is measured by CPI (Consumer Price Index)
- Hyperinflation exceeding 50%/month has hit Zimbabwe and Venezuela
- Deflation (falling prices) is generally worse than moderate inflation
- The highest US inflation was 23.7% in June 1920
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
- Winners: Borrowers, asset owners, governments
- Losers: Savers, fixed-income earners, lenders
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.
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Sources
- Wikipedia — InflationCC-BY-SA-4.0
- BLS — CPIpublic_domain