Financial institutions check for lots of things before authorizing a purchase

Credit card issuers determine your credit limit using your payment history, income, and more

Some credit card issuers also take your other payment obligations into account when determining your credit limit, such as the cost of your rent or alimony.

Algorithms built to detect credit card fraud can deny charges if they perceive the attempted purchase is unfamiliar or unusual based on historical data, even when a person has enough credit to make the purchase.

Since fraudulent charges are rare compared with the much greater number of transactions across purchase histories, these models have been shown to be overly sensitive, lacking sufficient training data on what legitimate fraud looks like. Models also perform less reliably for groups in low-income areas or communities of color, given less available data from which to build an accurate baseline.

An explanation of hard credit checks vs. soft credit checks

Some buy now, pay later services do a soft credit check rather than a hard credit check, like credit card companies would do when someone applies for a card. While hard credit checks can impact your credit score, soft pulls typically do not.

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."

Financial institutions use 'Know Your Client' standards to prevent money laundering

KYC standards include verifying customers' identities and conducting regular account checks for high-risk clients to avoid money laundering schemes. These standards obligate banks to report suspicious customers and activity.

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.

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.

Credit limits can be lowered as well as increased

Some common reasons for someone's credit limit being lowered include missed payments, an inactive account, and more.

Why there are microchips in credit cards

Credit cards have evolved significantly since their invention in 1950, but security lagged in the US for years. Despite handling only a quarter of global transactions, the US once accounted for half of all credit card fraud. The 2013 Target data breach helped push the adoption of chip cards, reducing fraud but shifting risks to online scams.

The Consumer Financial Protection Bureau is looking closely at BNPL

Given the lack of data around BNPL services in comparison to other financial products such as credit cards, the CFPB has conducted research to better understand BNPL products and how they could harm and benefit consumers.

Privacy concerns in the credit scoring system

Because credit scores use a lot of personal information (such as whether or not someone makes credit card payments on time), some worry their privacy is being compromised in the data collection process.

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.

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.

Payday lenders usually require borrowers to post-date a check or provide access to an electronic bank account

If borrowers can't pay back the loan, they can be subject to overdraft fees from their bank and other fees from the payday lender—further exacerbating the debt borrowers face.

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

AI could be increasing the opportunities for financial fraud

Systems that can reproduce near perfect counterfeits of legitimate financial documents are increasingly prevalent and sophisticated. The international Association of Certified Fraud Examiners estimate organizations lose about 5% of revenue to fraud each year.

Bank of America helped establish Visa as a global credit card network business after it rolled out its first credit cards.

At the time, those credit cards were called "BankAmericards." Today, Bank of America owns less than a 2% share of Visa—many other banks (as well as institutional investors) help govern and profit from the network.

Near-universal banking masks a large underbanked shadow system

FDIC data indicates 128 million households have a checking account, the vast majority (96% in 2024). But more than 14% of households are underbanked, meaning they have accounts but also rely on nonbank services such as check cashing, payday loans, or prepaid cards.

See an original Diner’s Club charge card

Before credit cards, there were charge cards from companies like Diner’s Club. While credit cards allow cardholders to carry a balance from month to month (potentially accruing interest), charge cards like Diner’s Club cards had to be paid off right away.

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.

Different CDs can have different term lengths, interest rates, and more

For instance, if a bank needs more deposits to fund loans, then it may offer high interest rates to attract deposits. Alternatively, a large bank with sufficient deposit reserves may have less incentive to grow its CD portfolio, offering lower rates as a result.

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.

A credit card’s grace period is a minimum of 21 days

Under federal law in the United States, an individual’s credit card payment due date must fall on the same day of each month, at least 21 days after the cardholder’s statement closing date.

US women got the right to open a credit card in their own name in 1974

Before that year, banks in the US were legally allowed to deny women credit or charge them higher interest if they failed to get a male cosigner.

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.

Visualize the 5,000-year history of consumer credit in one infographic

Consumer loans for agriculture were likely first used around 3500 BCE, but modern consumer credit took many more centuries to be established. England's credit reporting system, for instance, dates back to the early 1800s when a group of English tailors began swapping information about customers who failed to settle their debts.

Securitization has become common practice in home financing

When a homebuyer finances with a lender, they aren’t necessarily the one footing the bill. After a buyer secures a home loan, the lender can sell the loan to another financial institution or a private institution. That group can later sell that mortgage to investors. This is called securitization.

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.

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.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

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

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

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.

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

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

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

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.

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

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

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

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

Ebola infects and disables immune cells, triggering a cascade of events that leads to small blood clots throughout the body, weakening blood vessels and interrupting blood flow to key organs.

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.

See this overview of the firework rules across all 50 states, ranging from a complete ban on non-professional fireworks in Massachusetts to states with more lax rules like Indiana.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

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.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.