Merchants have to pay credit card transaction fees each time a card is swiped

American Express charges merchants more than other card companies to accept AmEx, making Visa a more accessible option for many merchants.

Each card network charges merchants a discount rate, which is a fee merchants pay to accept cards. American Express charges higher discount fees than competitors like Visa and Mastercard as the business is more reliant on fees for operation.

Credit card companies make money through interest, annual fees, and more

They also profit from interchange fees, the fee the retailer has to pay the credit card network in order to facilitate a transaction. The fee is typically between 1% and 3% of the transaction amount.

American Express runs on a 'spend-centric' model, using perks and merchant fees to drive profit

American Express cardholders tend to spend more money per transaction than other credit card users, which makes the interchange fees merchants have to pay to accept American Express cards worth it while incentivizing other companies to pay the interchange fee as well.

Watch a video that visualizes what really happens inside a credit card network when you make a purchase.

Every tap sets off a lightning-fast relay. When someone buys coffee with their Visa, a tiny "runner" races between the coffee shop's bank, Visa's network, and their bank—all in under a second. The catch? No money has actually moved yet. Here's what really happens behind that instant "Approved."

Card issuers are financial institutions that open credit to customers, while card networks facilitate purchases between merchants and customers

Card issuers give customers credit cards, set rate limits, and collect payments. Card networks, on the other hand, dictate where credit cards can actually be used by managing relationships between the network and merchants. These networks make money on interchange fees, which merchants pay to accept a specific card network at their stores.

Roughly 39% of Visa's revenue comes from data processing fees.

Visa gets roughly 0.13% to 0.14% of each transaction. About 32% of its revenue stems from the money banks pay Visa to use its services, and roughly 26% of its revenue comes from international transaction fees.

In 2018, the Supreme Court sided with American Express in a case that significantly changed antitrust regulation.

The US Department of Justice sued Visa, Mastercard, and American Express in 2010 over alleged anticompetitive contracts with merchants. While Visa and Mastercard settled out of court, American Express went to trial and had its case taken all the way up to the Supreme Court—which ruled that both sides of a transaction business must be analyzed to determine a monopoly.

Charge cards are different from credit cards

Unlike credit cards, charge cards often don’t have a preset credit limit, but cardholders need to pay off the entire balance every month.

Financial institutions check for lots of things before authorizing a purchase

Before authorizing a purchase, card issuers consider whether or not the cardholder has a high enough available credit limit to make the purchase, where the purchase is being made in order to reduce fraud, and more.

Gap and Sephora now accept BNPL, despite paying up to 8% per sale

Despite these merchants paying roughly 2% to 8% of each sale's cost (more than they pay for most credit card processing fees), they're signing on, in part, because BNPL can help them improve their conversion rates at checkout.

Microchips in payment cards improve security by generating unique transaction codes

Magnetic strips store unchanging data that is easily cloned, but microchips act as miniature computers that encrypt sensitive data. They also resist fraud by creating data unique to each transaction, preventing duplication.

Managing too many credit cards can be costly if they have annual fees

However, canceling cards must be strategic if it becomes necessary, as it can negatively impact your credit score. Before canceling, experts suggest asking if it's possible to downgrade to a no-annual-fee version in order to keep the account open, thus preventing potential hits to your credit score.

Some banks derive half of their income from overdraft fees on checking accounts

The fees are incurred when a customer withdraws more money than is left in the account, typically around $35 per overdraft. One in 11 Americans pays more than $350 a year in such fees, generating tens of billions of dollars each year for banks..

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Mutual funds come with a few fees

Since many mutual funds are actively managed, investors will have to pay regular fees to fund this service. Plus, there are exchange fees, purchase fees, marketing fees, and many more.

Fintech companies made it easier for merchants to request tips, leading to fatigue

In recent years, companies such as Square and Toast have created touch screen technologies prompting customers at coffee shops and casual restaurants to tip upwards of 25%. Despite the interesting psychological conundrum this presents to consumers, one tech columnist argues that shoppers don’t need to succumb to the pressure.

Gas stations top the list of riskiest places to use a debit card

Unlike credit cards, debit cards withdraw funds directly from your checking account, and federal laws provide fewer consumer protections against debit fraud. Gas station "skimmers" and long periods of separation from the card at restaurants are some of the more vulnerable spots for use.

Tariffs are typically paid by the importing company or organization to the US treasury

Tariffs levied on foreign countries are typically paid by the importer upon arrival of goods—for example, if Walmart imported a $100 pair of shoes, they would pay the US treasury an additional $15 under a 15% tariff rate. The degree to which these costs are passed onto consumers depends on real-world business agreements.

An explanation of dynamic pricing algorithms and the factors that impact them

Rather than static prices set by manufacturers or retailers based on the costs of goods, online businesses or box stores with electronic price tags can change prices in real time based on supply, demand, time, location, and competitor prices. These algorithms can be programmed to maintain or maximize profit margins based on shoppers' willingness to spend.

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.

A look at nodes and miners in managing bitcoin transactions

Each time a transaction involving bitcoin is carried out, the information must be relayed and recorded onto the currency’s blockchain. Multiple steps are involved, including the passage of the transaction to various nodes and miners who comprise multiple layers of verification and validation. See an illustrated guide to how these two crucial features of bitcoin processing work here.

Stablecoins now transfer more value than Visa or Mastercard.

Because stablecoins operate on public blockchains, transfers can occur nearly instantly without intermediaries, unlike traditional credit card networks. This has fueled stablecoins' adoption within the crypto world and in cross-border payments. Stablecoin transfer volume rose from about $3B in 2018 to roughly $18T in 2024, overtaking Visa's roughly $16T and Mastercard's $10T.

Marketplaces on the dark web provide eBay-like vendor feedback scores

An HP analysis found that 77% of cybercriminal marketplaces require vendors to purchase a license to sell their products, which can cost up to $3,000. About 92% of these marketplaces also use a third-party dispute-resolution service to handle customer service issues, thereby promoting "honor among thieves."

Federal law requires payday lenders to meet certain transparency requirements, but states have their own regulations

Federal law treats payday lending like other lines of credit, meaning it requires lenders to disclose the loan's interest rate and its "finance charge," a dollar amount expressing the full cost of the loan. But states have their own regulations around payday lending, hence why it isn't allowed in every state and why the industry looks so different across the country. These regulations are often part of a state's usury laws.

The term 'wedding tax' is often used to refer to the extra money that many wedding industry suppliers charge

According to wedding vendors, the "wedding tax"—the additional money charged for goods and services specifically intended for a wedding rather than another type of event—stems from the increased amount of time and attention that someone like a florist or makeup artist spends on a wedding versus any other type of event. Unlike other events, weddings are often planned a year or more in advance and require more detailed planning and hours of communication.

Congress mandated that the Fed streamline check payments

When it was first created in the 1910s, the Federal Reserve System became a crucial link between the nation's regional banks. The increasing number of checks used by the thousands of banks across the nation required a central operator, and the Fed was uniquely positioned to help. Learn more about the role the Fed played in the history of checks.

The long-lost art of coded postage stamps

In the 1800s, the postcard was a relatively new phenomenon, as was the post office. In the burgeoning system, recipients of mail had to sometimes pay prohibitively costly fees to receive it. So to get around the fees, a system of placing stamps on the envelopes in specific ways to communicate—a simple yes or no—was devised by clever mailers and expanded and codified by postcard companies into guides. Learn about the fascinating system here.

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.

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

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

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

Mark Twain spent decades feuding with the US Postal Service, convinced its costs and regulations were bureaucratic overreach.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Stars appear to twinkle because turbulence in the motion of molecules in Earth's atmosphere causes light to bend and wiggle rapidly on its way to the surface—a phenomenon called scintillation.

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

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

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

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Hurricanes, which rely on air consistently spinning in the same direction, cannot cross the equator because air curves in opposite directions north and south of it.

Play the role of a student in a game where you try to navigate college and remain debt-free, selecting different income levels, high school experience, race, ethnicity, and more.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.

When caught in the mouths of cardinal fish, seed shrimp release glowing, bioluminescent chemicals, which alert predators of the cardinal fish, prompting the shrimp's ejection.

Doctors differentiate between a phobia and fear by asking patients whether their fear interferes with their day-to-day activities.

To reduce wrinkles in clothing, research recommends gentle wash cycles with more water and tumble drying with smaller loads and longer times.

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 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.

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.

Track the location of the Voyager probes, currently between 13 and 15 billion miles away from Earth.