The base currency of the United States is the U.S. dollar. Since 1946 it has been
printed in seven denominations: $1, $2, $5, $10, $20, $50, and $100.
Learn about American money. ... American Money. The United States issues
paper currency and coins to pay for purchases, taxes, and debts.
Explore the security features of U.S. currency. Video ... Learn about U.S. currency
security features. ... Videos. View our videos to learn more about U.S. currency.
From the colonies to the 21st century, this interactive timeline shows the history of