How Minimum Payments Affect Debt Repayment

A minimum payment keeps an account in good standing. It is not designed to clear the balance quickly. This guide shows how issuers set the minimum and what a change in approach does to the timeline.

How issuers set the minimum

Card issuers use one of a few formulas. Your cardholder agreement names yours.

• Percentage of balance. Often 1% to 3% of the statement balance, with a dollar floor.
• Interest plus 1%. The month's interest and fees plus 1% of the principal.
• Flat floor. A fixed amount, commonly $25 to $35, when the formulas give less.

Installment loans such as car loans and student loans work differently. Their payment is fixed at the start so that the loan ends on a set date. The problem described here belongs mainly to revolving accounts like credit cards.

Why a falling minimum is a trap

When the formula is tied to the balance, the required payment shrinks as you pay down the debt. A smaller payment means a smaller share goes to principal, and the tail gets long.

Example: a $5,000 card at 22% APR. The first-month minimum is about $143 under an interest-plus-1% formula with a $25 floor. Here is what happens under four approaches:

Computed from a $5,000 balance at 22% APR, monthly compounding, no new charges.

Paying the falling minimum takes about 19 years and costs more in interest than the original balance. Holding the payment at the first month's $143 cuts the time to under 5 years and saves $4,899.20. Paying $250 finishes in just over 2 years.

The disclosure on your statement

U.S. rules require a credit card statement to show how long it would take to pay the balance with only minimum payments, and what monthly payment would clear it in three years. Use that box. It is the issuer's own estimate of the cost of minimums.

Minimums in a debt snowball

• Pay every minimum, always. The plan sends extra money only to the target debt.
• Use your fixed total, not a falling one. The calculator keeps the monthly budget constant: minimums plus extra stay the same, even as individual minimums drop.
• Freed minimums roll forward. When a card is paid off, its minimum goes to the next target.
• Enter the current minimum. If your issuer's minimum changes, update the input and re-run the estimate.

Practical steps

1. Set your payment to a fixed amount higher than the minimum, not a percentage of the balance.
2. Turn off the option that lowers the automatic payment as the balance falls.
3. Compare a fixed-payment plan to the statement's minimum-only estimate.
4. See how extra dollars change the result in How Extra Payments Change a Payoff Timeline.

Try your own balance and rate in the Debt Snowball calculator to see the difference between a minimum-only plan and a fixed plan.

Related guides

• How Credit Card Interest Is Calculated
• How Extra Payments Change a Payoff Timeline
• What Is the Debt Snowball Method?
• How to Build a Monthly Debt Payoff Budget
• Calculation Methodology