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Purchasing Power

Shows how inflation erodes what a sum can buy over time.

Interactive inputs coming โ€” use the formula and example below.

Worked example

Cash loses value in real terms as prices rise.

How to use it

  • Use the formula below with your own figures.

The formula

Future power = amount รท (1 + inflation)โฟ.

Worked example

Cash loses value in real terms as prices rise.

Frequently asked questions

Why hold less cash?

Inflation quietly erodes it.

What protects power?

Assets that grow at or above inflation.

Tips

  • Compare money across years in real terms.
  • Hold assets that grow at or above inflation.
  • Cash quietly loses value when prices rise.

Key terms

CPI
A price index for a basket of goods.
Real return
Return after inflation.
Purchasing power
What a sum can actually buy.