Bank of America Sent 60,000 Unsolicited Credit Cards to Fresno in 1958. Here Is What the Minimum Payment Became.
In September 1958, residents of Fresno, California opened their mailboxes to find unsolicited credit cards from Bank of America. No application had been filed, no credit check requested. The bank had simply mailed 60,000 plastic cards to the city and arranged for 300 local merchants to accept them. Bank of America called it a "drop." The project became the template for modern consumer credit.
The BankAmericard, which would eventually become Visa, introduced something that earlier charge cards like Diners Club had not offered to the mass market: revolving credit. You did not have to pay the balance in full each month. You could pay a minimum, carry the rest, and the bank would charge you interest on what remained. The idea was presented to consumers as flexibility. In structural terms, it was a debt perpetuation mechanism built into the payment design.
Americans now carry an average credit card balance of $6,715, according to Experian's 2024 data. Total revolving credit card debt in the United States has crossed $1.25 trillion. These figures are not produced primarily by irresponsible borrowers. They are significantly produced by the design of minimum payments.
The Origins of Revolving Credit in America
The Fresno Drop was not an immediate success. Bank of America reportedly lost approximately $20 million in the first year as cardholders defaulted and fraud went unchecked. The bank had no effective fraud controls in place and underestimated default rates among the mass population it had reached. A senior vice president, Joseph Williams, later recalled that the program was nearly shut down in its early months.
Bank of America persisted and the model proved profitable at scale. The BankAmericard began licensing the system to other banks in 1966, expanding the network nationally. In 1976, the licensee banks reorganized the program and rebranded it as Visa. Simultaneously, a competing network founded by several large banks in 1966 had become Mastercard. By the late 1970s, revolving credit was normalized across American consumer finance.
The legal framework around these cards changed significantly in 1974 when Congress passed the Fair Credit Billing Act, which gave cardholders rights to dispute billing errors and required creditors to provide certain disclosures. The Credit Card Accountability Responsibility and Disclosure Act of 2009, passed during the financial crisis, added more substantive requirements. One of its most significant provisions required credit card statements to show how long it would take to pay off the current balance if the cardholder paid only the minimum each month, and how much interest would be paid in total. The act also required statements to show what monthly payment would pay off the balance in three years. These disclosures, mandated by the Credit CARD Act and implemented starting in 2010, were the first time many cardholders saw the actual cost of their repayment pace in print.
How the Minimum Payment Trap Works
A minimum payment is calculated as a small percentage of the outstanding balance, typically 1 to 2 percent plus interest charges, or a flat minimum of $25 to $35, whichever is greater. The structure creates a self-defeating dynamic. As the balance falls, the required minimum falls with it. A smaller required payment means less principal is cleared each month. The debt shrinks slowly at first, then almost imperceptibly.
Credit card interest is typically calculated on a daily basis using a daily periodic rate, which is the annual percentage rate divided by 365. On a balance of $6,715 at a 20% APR, the daily rate is approximately 0.055%. Each day, interest accrues on whatever the current balance is. When only the minimum is paid, the payment covers most of the accumulated interest and only a small fraction of principal. As the balance decreases by small amounts, the daily interest charge decreases slightly, but the reduction is slow.
A $6,715 balance at 20% APR, paid only at the minimum, takes roughly 27 years to pay off. Total interest paid exceeds $9,000. The original purchase has been paid for three times over.
The Credit CARD Act disclosures were intended to make this visible, but research on their effectiveness has been mixed. A 2016 study in the Journal of Public Policy and Marketing found that disclosures increased awareness but had modest behavioral effects for consumers already under financial pressure, who often have limited flexibility to increase their payments regardless of what the statement shows.
The Anchoring Effect of Stated Minimum Payments
Behavioral economists have identified a specific problem with minimum payment disclosures that may partially counteract their intended benefit. When a statement displays a minimum payment prominently, that number serves as a psychological anchor for what an acceptable payment looks like. Research published in the Journal of Marketing Research by Stewart (2009) found that stating a minimum payment on a credit card statement caused some cardholders to pay less than they otherwise would have, because the stated minimum anchored their payment decision downward.
This anchoring effect means that the mandatory disclosure of the minimum payment may simultaneously inform cardholders of their minimum obligation and constrain them to it more firmly than if no figure had been stated. The design tension is real: any number stated prominently on a bill becomes a reference point, and reference points shape behavior in predictable ways.
The Avalanche and Snowball Methods
For cardholders with multiple debts, the payoff sequence matters. Two strategies dominate popular advice.
The avalanche method directs all extra payments above minimums to the highest-interest-rate debt first. Once that debt is cleared, the freed-up payment capacity moves to the next highest rate. This sequence minimizes total interest paid over the full repayment period. On a portfolio of debts with varying balances and rates, the difference between an optimized avalanche sequence and an unoptimized one can reach thousands of dollars.
The snowball method, popularized by personal finance writer Dave Ramsey, directs extra payments to the smallest balance first regardless of interest rate. This generates faster account closures and measurable psychological momentum. Research by Katy Milkman and colleagues at the Wharton School suggests that the sense of progress from clearing accounts can improve follow-through for some borrowers, making the snowball method more effective in practice for people who struggle with motivation.
The mathematically optimal strategy is the avalanche. The behaviorally optimal strategy depends on the individual. A debt payoff calculator that models both gives a complete picture of the trade-offs, including the interest cost of choosing the snowball over the avalanche on a specific debt portfolio.
Conclusion
The contrast between minimum payments and accelerated repayment is large enough to change how a financial situation looks entirely. A $6,715 balance paid at $250 per month instead of the minimum clears in about 34 months, with total interest under $2,000. The difference in interest is over $7,000. The difference in time is more than 24 years.
Run your balance and interest rate through ToolHQ's debt payoff calculator to see the actual payoff timeline under different monthly payment amounts. The minimum payment result is useful to see once so you understand exactly what the default trajectory costs.
Frequently Asked Questions
How long does it take to pay off $5,000 in credit card debt?
At a 20% APR paying only the minimum, it takes over 20 years and costs more in interest than the original balance. Paying $200 per month clears it in about 29 months with under $800 in interest.
What is the average credit card interest rate?
As of 2024, the average credit card APR for accounts carrying a balance is around 20-22%, according to Federal Reserve data. Rates vary by card type and creditworthiness.
Why does paying more than the minimum make such a big difference?
Extra payments reduce the principal faster, which reduces the interest charged each month. The compounding effect works in reverse: smaller balance means less interest accrues, which means more of each payment goes to principal.
Is it better to pay off debt with the highest interest rate or the smallest balance first?
Paying the highest interest rate first (avalanche method) minimizes total interest paid. Paying smallest balance first (snowball method) provides psychological momentum. The avalanche method saves more money mathematically.