You may not stop to think about money because it’s a part of our everyday life, but there are lots of fascinating facts about currency. Learning some interesting tidbits may change how you think about money and even come in handy the next time trivia night rolls around.
Read on for 21 fun facts about money.
Key Points
• Money facts can build understanding of our financial system and be fun to learn and share.
• The highest bill denomination ever issued by the U.S. was the $100,000 bill.
• Only 8% of the world’s currency is physical money.
• The U.S. Secret Service was originally founded to combat counterfeiting.
• A penny costs more to make than it’s worth.
Surprising Things You Probably Didn’t Know About Money
Maybe you already know only two non-Presidents grace the front of U.S. bills (Alexander Hamilton on the $10 bill and Benjamin Franklin, the $100 bill). But did you know our paper currency isn’t really made out of paper? And that no living person can appear on a U.S. coin or dollar bill? It’s true! Here, learn more intriguing money facts.
1. Each Dollar Amount Has Its Own Lifespan
Money doesn’t last forever, but some dollar bills have a longer life cycle than others.
According to the U.S. Currency Education Program, a $10 bill has the shortest lifespan while a $100 bill has the longest. Here’s the estimated lifespan of the different denominations:
• $1: 6.6 years
• $5: 4.7 years
• $10: 5.3 years
• $20: 7.8 years
• $50: 12.2 years
• $100: 22.9 years
2. A Banknote Can Be Folded 4,000 Times
Our currency is pretty durable. The Bureau of Engraving and Printing, the sole producer of U.S. paper currency, says it would take 4,000 double folds, forward and backwards, for a dollar bill to tear. It might be because paper money isn’t actually made of paper. It’s actually a blend of 75% cotton and 25% linen with tiny blue and red synthetic fibers of various lengths evenly distributed throughout the bill.
3. There’s a Reason US Dollars Are Green
Dollar bills weren’t always green. Colonial money for example, was tan with black or red ink. It wasn’t until the Civil War the government started using green ink to print paper money where it got the name greenbacks. The color was selected because the ink didn’t fade or easily decompose, which protected against counterfeiting.
4. A Coin Can Last Around 30 Years
Coins stay in circulation for about 20 to 30 years, which is when they become too worn to use. At that time, the Federal Reserve takes them out of circulation and melts them down to use for other purposes.
Recommended: How Do Federal Reserve Banks Get Funded?
5. The Highest Bill Denomination Issued by the US Was $100,000
Printed in 1934 and featuring President Woodrow Wilson, this $100,000 bill was a gold certificate currency that was never intended for public use, such as being deposited into a checking account. Instead, it was meant only for official transactions between Federal Reserve Banks. The last time this banknote was printed was in 1945, and it can’t be legally held by collectors.
6. A Penny Costs More to Make than It’s Worth
A recent report says it costs almost 3.1 cents to make a penny as of 2023. Why the increase? Part of the rise could be the higher prices of copper and zinc, both of which are used to make pennies.
7. Money Is Dirtier Than You Think
Both paper currency and coins can carry viruses and bacteria that can live on the surfaces and easily transfer to your skin or onto other objects after touching it. Research has found physical currency can change hands up to 110 times a year or almost twice a week. One recent study found banknotes made with cotton or linen fibers, such as U.S. dollar bills, present increased areas for germs and the capacity to retain moisture, which can make it an easier place for bacteria to thrive.
8. The Dollar Sign Was First Used in 1785
Here’s another fun money fact: The official adoption of the dollar sign in the U.S. can be traced back to 1785, when it evolved from the Spanish symbol for pesos. It’s believed the $ originated from the abbreviation PS, which was used to indicate Spanish pesos in the Americas. Gradually the “S” came to be written over the “P,” eventually morphing into the dollar sign we know today.
9. Martha Washington Is the Only Woman to Appear on a US Bill
America’s first First Lady, Martha Washington, is to this day, the only woman to have her likeness appear solo on a U.S. paper currency note. Her image appeared on the $1 Silver Certificate, first issued in 1886 and discontinued in 1957. It was the country’s second-longest issued paper money.
10. America Isn’t the Only Country that Uses the US Dollar
Besides the United States and its five inhabited territories, 11 countries in the world also use the U.S. dollar, the world’s reserve currency, as their official currency: The British Virgin Islands, Timor-Leste (or East Timor), Bonaire, Ecuador, El Salvador, Federated States of Micronesia, Marshall Islands, Palau, Sint Eustatius, Saba, and Turks and Caicos.
Recommended: Examining the Value of the U.S. Dollar
11. You Can Make Your Money Crisp by Ironing It
Ready for a surprising money fact that involves a little bit of fabric know-how? If you’ve got a creased, crumpled, or wrinkled dollar bill, you can make it look new by pressing it with your iron. As mentioned earlier, U.S. dollars are 75% cotton and 25% linen, so it’s actually fabric. To iron the money, dampen the dollar bill slightly with a spritz bottle, sprinkle water by hand, or use the spray function on the iron itself. Set the iron to a low heat, put a towel under the bill and another on top of it, then iron the money in a circular motion. Set aside to air dry. Presto! You should have a nice flattened bill, ready to stick in a gift card or slide into an ATM en route to your savings account.
Recommended: How to Write a Check
12. The Oldest Currency Still in Use Is the British Pound
The British pound dates back to 775 AD and was called the pound sterling, when Anglo-Saxon kings used silver pennies, or sterlings, as money. Today, this foreign currency is the fourth most traded in the foreign exchange market, after the U.S. dollar, the euro and the Japanese yen.
Recommended: Here’s What You Can Do with Leftover Foreign Currency
13. 13. There Are 1.2 Billion $2 Bills Still in Circulation
The first $2 bills were printed in 1862. Although they originally featured Alexander Hamilton, they were later redesigned to feature Thomas Jefferson. The bills are still in circulation (1.2 billion of them in fact) and are considered to be the rarest currency denomination in the U.S. Some people believed $2 bills were bad luck and would rip off the corners of the bill to “reverse the curse,” making them unusable.
14. The First Universal Credit Card Was Introduced in 1950
Credit cards originated in the U.S. back in the 1920s, but were issued by individual firms, such as oil companies and hotel chains, to their customers, specifically for purchases made at company outlets. It wasn’t until 1950 when Diners Club founders Ralph Schneider and Frank McNamara issued a card that could be used at a variety of establishments. The Diners Club card sparked the modern credit card era. Others soon followed, such as American Express, which debuted their card of this type in 1958.
Recommended: 10 Credit Card Rules You Should Know
15. There’s an ATM on Every Continent on Earth
One interesting money fact involves how we access it. There are more than 3 million cash machines around the world today. You can get or deposit cash at ATMs in the most remote of places including in the most remote of places including Easter Island and McMurdo Station in Antarctica!
16. The Secret Service Originally Fought Counterfeiting
Today we typically think of the U.S. Secret Service as protection for certain political leaders, including the President and Vice-President and their immediate families. But the agency was founded for a very different reason. By the end of the Civil War, fake money was a significant problem, with nearly one-third of all U.S. paper currency in circulation being counterfeit. As a result, the financial stability of the country was in jeopardy, so in 1865, the Treasury Department established the Secret Service to suppress the counterfeiting. They didn’t start protecting the President until 1901, after the assassination of President William McKinley.
17. Most Americans Hoard Their Spare Change
One landmark survey by MyBankTracker.com found 55.5% of people do nothing with the loose change they’ve accumulated. Interestingly, 60.3% of the male respondents said they’re more likely to leave their extra coins untouched compared to 51% of the female respondents.
Another survey from Coinstar, conducted a few years ago, found that people estimated they had about $28 in change at home but typically took $56 in change to Coinstar machines.
Recommended: 7 Tips to Managing Your Money Better
18. Only 8% of the World’s Currency Is Physical Money
Interesting money fact: With mobile banking and electronic payments becoming more and more common, people are earning and spending money without having to even touch it. Economists estimate only 8% of the world’s currency is literal cash with the rest existing on computer hard drives in electronic bank accounts.
19. Coins Didn’t Always Say “In God We Trust”
The original American penny, reportedly designed by Benjamin Franklin, features a motto he popularized, “Mind Your Business.” The message wasn’t literally telling people not to be nosy. Instead, it was meant as a literal instruction about business and commerce, to keep focused on your livelihood.
20. US Airports Make Big Money from Loose Change
According to the Department of Homeland Security, airline passengers leave behind thousands of dollars in coins each year at U.S. airport screening checkpoints. In 2023, the most recent year studied, the Transportation Security Administration collected almost $1 million in unclaimed money (mostly coins) from passengers who emptied their pockets while going through the security line. These funds get deposited into a special fund so that collection and spending can be easily tracked. After a period of
21. This Century Is Transforming Money
Online banking has recently transformed how people manage their personal finances, and technology continues to alter how money is handled.
New ways to pay for things continue to rise in popularity, including mobile payment technology like Venmo, PayPal and Google Pay.
Approximately 42.6% of people worldwide use mobile or digital wallets.
The Takeaway
Learning fun facts about money reveals that there’s more to it than its face value. Finding out some fascinating money trivia might even change the way you think about it. These facts can enrich your understanding of the history of our currency system, how it’s evolving, and its place in the global market.
Interested in opening an online bank account? When you sign up for a SoFi Checking and Savings account with eligible direct deposit, you’ll get a competitive annual percentage yield (APY), pay zero account fees, and enjoy an array of rewards, such as access to the Allpoint Network of 55,000+ fee-free ATMs globally. Qualifying accounts can even access their paycheck up to two days early.
Better banking is here with SoFi, NerdWallet’s 2024 winner for Best Checking Account Overall.* Enjoy 3.30% APY on SoFi Checking and Savings with eligible direct deposit.
Photo credit: iStock/bob_bosewell
SoFi Checking and Savings is offered through SoFi Bank, N.A. Member FDIC. The SoFi® Bank Debit Mastercard® is issued by SoFi Bank, N.A., pursuant to license by Mastercard International Incorporated and can be used everywhere Mastercard is accepted. Mastercard is a registered trademark, and the circles design is a trademark of Mastercard International Incorporated.
Annual percentage yield (APY) is variable and subject to change at any time. Rates are current as of 12/23/25. There is no minimum balance requirement. Fees may reduce earnings. Additional rates and information can be found at https://www.sofi.com/legal/banking-rate-sheet
Eligible Direct Deposit means a recurring deposit of regular income to an account holder’s SoFi Checking or Savings account, including payroll, pension, or government benefit payments (e.g., Social Security), made by the account holder’s employer, payroll or benefits provider or government agency (“Eligible Direct Deposit”) via the Automated Clearing House (“ACH”) Network every 31 calendar days.
Although we do our best to recognize all Eligible Direct Deposits, a small number of employers, payroll providers, benefits providers, or government agencies do not designate payments as direct deposit. To ensure you're earning the APY for account holders with Eligible Direct Deposit, we encourage you to check your APY Details page the day after your Eligible Direct Deposit posts to your SoFi account. If your APY is not showing as the APY for account holders with Eligible Direct Deposit, contact us at 855-456-7634 with the details of your Eligible Direct Deposit. As long as SoFi Bank can validate those details, you will start earning the APY for account holders with Eligible Direct Deposit from the date you contact SoFi for the next 31 calendar days. You will also be eligible for the APY for account holders with Eligible Direct Deposit on future Eligible Direct Deposits, as long as SoFi Bank can validate them.
Deposits that are not from an employer, payroll, or benefits provider or government agency, including but not limited to check deposits, peer-to-peer transfers (e.g., transfers from PayPal, Venmo, Wise, etc.), merchant transactions (e.g., transactions from PayPal, Stripe, Square, etc.), and bank ACH funds transfers and wire transfers from external accounts, or are non-recurring in nature (e.g., IRS tax refunds), do not constitute Eligible Direct Deposit activity. There is no minimum Eligible Direct Deposit amount required to qualify for the stated interest rate. SoFi Bank shall, in its sole discretion, assess each account holder's Eligible Direct Deposit activity to determine the applicability of rates and may request additional documentation for verification of eligibility.
See additional details at https://www.sofi.com/legal/banking-rate-sheet.
*Awards or rankings from NerdWallet are not indicative of future success or results. This award and its ratings are independently determined and awarded by their respective publications.
Financial Tips & Strategies: The tips provided on this website are of a general nature and do not take into account your specific objectives, financial situation, and needs. You should always consider their appropriateness given your own circumstances.
This content is provided for informational and educational purposes only and should not be construed as financial advice.
Third-Party Brand Mentions: No brands, products, or companies mentioned are affiliated with SoFi, nor do they endorse or sponsor this article. Third-party trademarks referenced herein are property of their respective owners.
SOBK-Q424-063
Read more
