Everyday Money
How did money begin, why do so many prices end in 99, what are banknotes made of? How money works in everyday life, from inflation to compound interest.
- Everyday Money
Where Did Money Come From? The Barter Myth, Debt and the First Coins
Anthropologists have never found an economy based purely on barter. The oldest records point to accounts and credit in Mesopotamia; coins came later in Lydia, and paper money in China.
November 4, 2026 - Everyday Money
Where Did the Dollar Sign Come From? The Answer Starts With Spanish Pesos
The most widely accepted explanation is that the dollar sign grew out of a handwritten abbreviation for pesos, the Spanish silver coin. The Pillars of Hercules and U-over-S stories lack documentary support.
November 4, 2026 - Everyday Money
What Are Banknotes Made Of? Cotton, Linen and Plastic
U.S. dollars, euros and Brazilian reais are not printed on ordinary paper: they use cotton fibers, and the dollar adds linen. Australia pioneered banknotes made of polymer, a type of plastic.
November 4, 2026 - Everyday Money
What Is Inflation and Why Do Prices Go Up? CPI, Causes and the 2% Target
Inflation is the rate at which prices for goods and services rise over time, so the same money buys less. It is tracked by indexes such as the CPI, and central banks steer it toward targets.
November 4, 2026 - Everyday Money
What Is Compound Interest? How "Interest on Interest" Adds Up
Compound interest is charged or earned on both the principal and the interest already added. See a worked example against simple interest, the Rule of 72 and why the same math applies to debt.
November 4, 2026 - Everyday Money
Why Do So Many Prices End in .99? The Left-Digit Effect Explained
Prices ending in .99 exploit the weight we give the first digit. See what research on the left-digit effect shows, when it works and why the origin of the habit is still uncertain.
November 4, 2026 - Everyday Money
How to Tell if Money Is Fake: Security Features of the Dollar, Euro and Real
Watermark, security thread, color-shifting ink and raised printing: how to check dollar, euro and Brazilian real notes according to their central banks, and what to do with a suspect bill.
November 4, 2026 - Everyday Money
Why Is the U.S. Dollar the World's Reserve Currency? From Bretton Woods to Today
The dollar leads thanks to the size of the U.S. economy, deep financial markets and the legacy of Bretton Woods. See what a reserve currency is and the latest IMF reserve data.
November 4, 2026
