How does inflation erode cash savings?

As prices rise over time, each dollar buys fewer goods and services. At 3.5% inflation, the purchasing power of $10,000 is halved in approximately 20 years.

Updated: August 2026 • Verified v1.2

Historical Inflation & Purchasing Power Calculator

Finance & MathPopular

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Future_Cost = Amount * (1 + Rate/100)^Years; Purchasing_Power = Amount / (1 + Rate/100)^Years

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Understanding Your Results

Calculates equivalent future costs, remaining purchasing power of cash, cumulative inflation percentage, and milestone multi-decade comparisons.

Practical Guidance & Next Steps

Over 20 years at a 3.2% historical inflation rate, cash loses approximately 47% of its real purchasing power.

What is this?

A financial planning utility that projects future purchasing power and price increases under compound inflation.

How does it work?

1. Enter initial dollar amount (e.g. $10,000). 2. Set expected annual inflation rate (default 3.2%) and time horizon in years. 3. View equivalent future cost, purchasing power loss, and decade milestone tables.