Investing term
What is Purchasing power?
What your money can actually buy, adjusted for price changes.
Purchasing power is what your money can actually buy once you account for changing prices. It's the real measure of wealth: $100 is only worth the goods and services it commands, and as prices rise, that same $100 commands less. Two people with identical bank balances can have very different purchasing power if they live in eras — or economies — with different price levels.
Inflation steadily eats into purchasing power, which is why growing the number in your account isn't enough; you have to grow what it can buy. Investing exists largely to raise purchasing power faster than inflation erodes it. Money that merely holds its nominal value is, in real terms, quietly getting poorer.
Hold $100 as cash and inflation shrinks what it buys — about $74 of goods in ten years, $55 in twenty. Nominal dollars flatter; buying power is the truth.
For example
If prices rise 3% but your savings earn 1%, your purchasing power shrinks 2% that year — you can buy less despite having more dollars.
Learn it by doing
That's Purchasing power in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 1, Money, Goals & Your Financial Foundation).
Try the free lesson →Why it matters to you
Purchasing power is the honest yardstick for every long-term financial goal, because you'll spend your savings on real things — food, rent, healthcare — not on the dollar figure itself. Judging progress in nominal dollars flatters you and hides the erosion; judging it in purchasing power tells you whether you're truly getting ahead. It's the reason a "safe" pile of cash can leave you worse off than a portfolio that swung around but grew.
⚠ Confusing more dollars with more wealth
A balance that ticks upward can still be losing purchasing power if prices rise faster than it grows. Watching only the nominal number — "I have more than last year" — can mask a real decline in what that money buys. Always ask whether your money is growing faster than the cost of the things you'll spend it on.