Glossary/Economics

Inflation

Also known as Price inflation

Inflation is a sustained rise in the general price level that reduces the purchasing power of money. It differs from a one-time increase in an individual price.

Editorially reviewed 2026-07-30

Why inflation matters

Inflation changes real returns, interest rates, wages, company margins, bond values, and household spending. Its effect depends on whether it is expected and whether income or asset cash flows adjust.

How it is applied

Investors compare price indices, wages, expectations, commodity costs, rents, and policy. Portfolio scenarios distinguish demand, supply, currency, and fiscal sources.

Portfolio example

An investment earns 7% while consumer prices rise 4%. Its approximate real return is 3%, before tax and compounding precision.

How to interpret it

Falling inflation is disinflation, while a falling overall price level is deflation. Moderate inflation can coexist with asset losses if rates rise unexpectedly.

Limitations and common misconceptions

Indices differ, personal inflation varies, and hedges are unreliable over short horizons. Regime changes make historical relationships unstable.

Sources and further reading