How banking works

From bartering to banking, temples to electronic transactions, here’s banking has evolved significantly since ancient times

A few historical facts about banking (like that one day, not long ago, certificates of deposit were physical pieces of paper) may not surprise you. But did you know that the church was the original lender? And that Julius Caesar himself invented foreclosure?

Bank runs, explained

A major feature of the modern financial system is trust: if an institution loses it, customers will quickly withdraw deposits and stockholders will sell their shares. This digestible animated video looks into the nature and history of bank runs and...

The Medicis of Italy innovated 'bills of exchange,' precursors to checks

At the time, lending money for interest (also known as usury) was banned in much of the Christian world. The enterprising Medicis developed bills of exchange to allow merchants to promise payment without cash or coin (with some discrete means of earning interest woven in). Learn more about how this family laid the foundation for modern banking.

Banks make money by loaning customer deposits and earning interest

This means the interest you earn on your deposits is lower than what the bank earns on the same amount. Banks often keep cash reserves (though a minimum requirement was rescinded in 2020) but generally invest in government bonds, corporate securities, and loans to other banks. During bank runs, depositors withdraw more than the bank has on hand.

Before the modern banking system, most lending resembled private credit

Before the creation of the modern banking system, the majority of loans were negotiated directly between the lender and the borrower—effectively making them private credit transactions.

What do investment bankers actually do?

Investment bankers organize large financial transactions at a high level. But what does that look like day to day? A video breaks down the specifics about the transactions and deals investment bankers work on, and which members of an investment banking team have eyes on each project.

How the Bank of Italy became Bank of America

Amid the devastation of the 1906 earthquake in San Francisco, Italian immigrant and local banker Amodei Giannini managed to keep hold of a substantial amount of currency. On a handshake, Giannini loaned needy locals money to rebuild. The enterprising banker would go on to form one of the first banks for the middle class, the Bank of Italy, which would go on to become the Bank of America in 1930. Read about the founder here.

What is the function of money?

Nearly everyone uses some form of money to facilitate day-to-day activities, but what is it, anyways? Economists define money as anything that can be accepted as final payment for goods and services. Shells, beads, corn, and a wide range of objects have acted as money throughout history—explore the common but deceptively abstract concept of money in this eight-minute podcast from the Federal Reserve.

Master the banking basics

Before deciding on a credit union, it’s important that you understand the basics. That way you can know exactly what’s happening with your hard-earned money behind the scenes. Flip through these flashcards to make sure you understand key terms like “deposit” and “checking account.” Then, you can read up on top banking products and start to find a credit union that works for you. Click here, then scroll down the page to find the cards.

Watch Ray Dalio explain how the economy works

Dalio describes the economy as a machine that runs on three main cycles: productivity growth, the short-term debt cycle, and the long-term debt cycle. Dalio says layering these three cycles on top of each other essentially creates a template for understanding changes in the economy.

How AI is revolutionizing banking

Generative artificial intelligence has left no industry untouched, and banking isn’t an exception. Experts estimate that gen AI could add as much as $340B in value to the banking sector each year. For consumers, this involves new features to prevent fraud and customer service chatbots. This report dives into the revolution underway and seeks to define a “full stack” AI bank of the future. Read more here.

The Erie Canal transformed New York City into America’s banking capital

By redirecting western trade through New York Harbor, the canal turned New York into the nation’s commercial hub. This surge in commerce shifted financial power from Philadelphia to Wall Street, establishing the city as America’s banking capital.

The shadow banking system is a group of intermediaries that operate outside of normal banking regulations

The nonbank financial intermediaries that make up the shadow banking system legally provide services that are similar to those of traditional commercial banks. Although the term isn't used as often as it once was, private credit firms are technically part of the shadow banking system, as are hedge funds, payday lenders, buy now, pay later companies, and more.

How art-backed loans work

Using your art collections—some of which are valued in the millions—to secure a loan is becoming more common among collectors. Here's a breakdown on how banks and private lenders are making best of the opportunity in liquidity.

How JPMorgan Chase became America's biggest bank

From the railroad and steel consolidations brokered by John Pierpont Morgan on Wall Street more than a century ago, to the repeal of Glass-Steagall, the financial crisis, and Jamie Dimon’s leadership, J.P. Morgan Chase has been at the center of finance for more than a century.

British economist John Maynard Keynes originally proposed a global currency called the bancor

Keynes—one of the chief architects of the Bretton Woods system—proposed establishing a global central bank that would issue a new international currency, the bancor, to settle trade imbalances. The idea was rejected in favor of the US dollar serving as the main currency of the international system.

The World Bank funds development in the world's poorest countries

Originally called the International Bank for Reconstruction and Development, the World Bank was established in 1944 to assist in rebuilding war-damaged countries and has since grown to finance long-term economic development worldwide.

The Fed can use quantitative easing to stimulate growth once it has lowered the federal funds rate as far as it can go

This involves purchasing large-scale assets from banks beyond just Treasury bills and bonds. This effectively gives banks much more liquidity, with the hope that they will actively lend it out at cheaper rates and expand the economy. But quantitative easing runs the risk of sparking inflation.

Bitcoin explained and made simple

Bitcoin, the most popular and well-known example of a cryptocurrency, came on the scene around 2010, with its evangelists proclaiming it would eventually displace government-backed traditional cash. While the concept of a digital currency may seem straightforward, the details can be deceptively simple. This quick video overview provides the foundation for a deeper dive into the world of decentralized currency.

The bond market is where bonds and other debt securities are traded

Bonds are fixed-income investments allowing individuals to lend a specific amount of money to a large entity, like a government or corporation, for a set amount of time in return for interest paid out over the life of the loan. The bond market is widely considered a key economic barometer.

The payments tool Zelle was created by big banks to compete with apps like Venmo

Zelle is an alternative to Venmo, where people can pay each other back for expenses like apartment utilities or dinner. But its origin story has more to do with big finance than small transactions.

Making sense of the parts of a check

Though individuals use checks sparingly if at all, half of businesses rely heavily on check-writing to pay suppliers and contractors. Get to know the parts of a check with this visual guide.

Anti-money laundering laws forcing banks to report data have become important foreign policy tools

Since the Bank Secrecy Act of 1970, which required banks to report transactions exceeding $10K and keep records on customers, anti-money laundering laws have become an important proxy for American foreign policy initiatives. Increased regulation via financial institutions helps curb drug and human trafficking, as well as destabilize the financial infrastructure for terrorist organizations.

Compound interest has been called the eighth wonder of the world

That's because it has the near-magical quality of helping financial investments grow exponentially. Rather than accruing a standard lump of simple interest annually, compound interest takes the previous year’s yield and reinvests it as part of the principal.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

How the soccer World Cup works

The World Cup is the biggest game in the world. Watch this video to learn how it works and how it came to be such a massive world event.

Watch this video that uses Lego bricks to explain how venture capital works.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

Roughly 43 million US borrowers owe roughly $1.7T in student debt, the second-largest source of consumer debt behind mortgages.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Watch what the Ebola virus does inside our cells and organs in order to spread and survive.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

The Brothers Grimm were lawyers before they were storytellers, but became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.