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The minimum payment shrinks every month because it is calculated as a percentage of the falling balance. On a $3,500 balance at 22.9% APR, the minimum at 2% starts at $70. After one month the balance falls slightly and so does the minimum, perhaps to $69.50. This continues for years, with the payment gradually approaching the monthly interest charge. In the final years of the repayment the minimum is so close to the interest that almost none of it reduces the principal. The total payoff time can exceed 20 years on a balance most people think of as manageable.

The most effective strategies are: pay a fixed amount each month rather than the declining minimum; use a 0% balance transfer card to stop interest accruing; or consolidate into a lower-rate personal loan. Of these, the fixed payment approach costs nothing to set up and requires no credit application. Simply decide what the balance will be next month if you add no new spending, divide by how many months you want to pay it off in, and pay that amount every month regardless of what the minimum statement says.

No. Paying more than the minimum never hurts your credit score. It typically helps by reducing your credit utilisation ratio, which is the proportion of your credit limit in use. Lower utilisation generally improves your score. The only payment behaviour that matters negatively is missing payments or paying less than the stated minimum, both of which will appear on your credit file. Paying in full each month is the highest utilisation signal to bureaus.

If your savings interest rate is lower than your credit card APR, paying off the card first provides a better guaranteed return than saving. A credit card at 22.9% APR costs more per year than almost any savings account pays. The exception is an emergency fund: holding three to six months of essential expenses in cash protects you from needing to use the credit card again if something unexpected happens. Beyond the emergency fund, surplus money almost always works harder paying down high-rate credit card debt than sitting in a low-yield savings account.

If new spending is added each month, the balance never falls and may grow. The minimum payment is calculated on the higher balance, so the absolute amount paid increases slightly, but because spending also increases the balance, the net principal reduction can be zero or even negative. This is the most dangerous pattern because it can continue for years without the cardholder realising how large the total balance has become. This calculator models a closed balance with no new spending. If you continue spending, the true payoff timeline is even longer than shown.