The dollar lost 97%, the pound 99.7%, the yen 99.9%: why fiat money loses value

Fiat currencies — money not backed by gold or any physical asset, but resting instead on trust in the issuing government — don't preserve purchasing power over time. They lose it gradually but relentlessly, and even currencies still in active circulation today have lost the overwhelming majority of their value over the past century.

The Numbers, Currency by Currency

• According to the Federal Reserve Bank of St. Louis, the US dollar has lost about 97% of its purchasing power since 1913 — the year the Fed was founded
• The British pound sterling has devalued by roughly 99.3-99.7% over the same period — the decline accelerated sharply after the UK abandoned the gold standard in 1931
• The Japanese yen has lost nearly all of its historical value — around 99.9% — with hyperinflation during and after World War II playing a decisive role: prices in Japan rose more than 200-fold between 1944 and 1950 alone

Dollar data source: Federal Reserve Bank of St. Louis (FRED)

Why This Happens

Unlike gold or bitcoin, the supply of fiat money has no hard cap — central banks can expand the money supply as needed, and since most major economies abandoned the gold standard by the mid-20th century, that mechanism is constrained by nothing but the regulator's own policy. Even the official inflation target in most developed economies — around 2% a year — compounds over decades into a dramatic loss of purchasing power: money set aside for 30 to 40 years loses most of its value simply through steady, "moderate" price growth, without any sharp crisis or hyperinflation involved.

What This Means for Anyone Just Holding Cash

The main practical takeaway: money that just sits in cash or in a low-yield account loses real value even when the economy looks stable and there's no currency crash happening. It's a slow, barely noticeable process that only becomes obvious when comparing prices for the same goods and services across decades, not individual months or years.

What This Means in Practice

This decades-long erosion of fiat purchasing power is exactly what underlies the case for hard-capped-supply assets — historically gold, and in recent years bitcoin — which many investors treat as a way to protect savings from long-term devaluation. That's not a guarantee of preserved value in the short term — both assets remain volatile — but a strictly limited supply, rather than habit or reputation, is the key structural difference from fiat currencies that explains the interest in them as a long-term alternative.

This material is for informational purposes only and is not investment advice.