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How investing works

Lesson 25 · Written for kid, teen, and little

Inflation: the silent thief

Why rising prices reduce what cash can buy.

The idea

Ever notice how candy and movie tickets cost way more than they used to? That slow rise in prices is called inflation, and it quietly shrinks what your money can buy. Cash hidden in a piggy bank loses buying power when prices rise. That's why investing — which can grow faster than inflation — matters for long-term money. 🎈

A

Words to know

6

Inflation

An increase in the general price level over time. When prices rise, the same amount of money buys less.

Buying power

How much stuff your money can actually buy — inflation eats away at it.

Nominal vs real return

Nominal return is the change before inflation. Real return adjusts for inflation: (1 + nominal return) ÷ (1 + inflation) − 1. Subtraction is only an approximation. Use rates expressed as decimals.

VOO / S&P 500

VOO is an index fund tracking the S&P 500 — about 500 of the biggest US companies.

HYSA

A high-yield savings account — a bank account that pays more interest than a normal one.

TIPS

Treasury Inflation-Protected Securities adjust their principal with inflation or deflation. Their market price can fluctuate; the maturity payment follows Treasury’s principal-protection rules.

Try it — no accountMake the call

Imagine prices rise 3% a year for 10 years. You have $1,000. Among the three constant-rate models below, which gives the highest projected buying power? These are hypothetical calculations, not a prediction or a choice that suits everyone.

In the full lesson

  1. 1Make the call

Vine has 107 lessons like this one, each written three ways so a 7-year-old and a 17-year-old both get a version that fits.

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