Editorial

The Minimum Payment Trap: How Banks Keep You in Debt for a Decade

The minimum payment is not a debt repayment plan. It is the smallest amount the issuer will accept without marking the account late. The two are not the same thing, and the difference is measured in years.

Worked example

$5,000 at 22% APR. Pay the interest-plus-1% minimum.

Months to clear: 19 yr 2 mo
Total interest: $8,100
Total amount paid: $13,100

The $5,000 of stuff you bought costs $13,100.

Section I

Why the minimum is designed this way

Credit card issuers are not legally required to minimise your interest cost. They are required to keep accounts current, send accurate statements, and disclose the maths. The minimum payment formula sits exactly at the line where the bank's interest is fully covered, the customer's principal nudges down a little, and the loan can be allowed to run for years.

The Credit CARD Act of 2009 nudged this in the consumer's direction. It killed double-cycle billing, restricted certain rate hikes, and required the now-familiar Minimum Payment Warning box on every statement. It did not change the formulas themselves. The maths the box describes is the same maths the banks are still using.

None of this is illegal, hidden, or even particularly sneaky. It is just slow. Slow is the trap.

Section II

The first twelve months, line by line

Below is the actual month-by-month split of an interest-plus-1% minimum payment on $5,000 at 22% APR for the first twelve statements. Notice how much of every payment is interest, and how slowly the balance moves.

Month	Balance	Min payment	Interest	Principal	New balance
1	$5,000	$142	$92	$50	$4,950
2	$4,950	$140	$91	$50	$4,901
3	$4,901	$139	$90	$49	$4,852
4	$4,852	$137	$89	$49	$4,803
5	$4,803	$136	$88	$48	$4,755
6	$4,755	$135	$87	$48	$4,707
7	$4,707	$133	$86	$47	$4,660
8	$4,660	$132	$85	$47	$4,614
9	$4,614	$131	$85	$46	$4,568
10	$4,568	$129	$84	$46	$4,522
11	$4,522	$128	$83	$45	$4,477
12	$4,477	$127	$82	$45	$4,432

Calculated using daily compounding approximated on a monthly basis at the issued APR. Floor of $25 not yet binding at this balance.

Section III

Time and total cost across balance sizes

The trap is not unique to the $5,000 case. Every balance size above the floor amount produces the same shape of amortisation. The bigger the balance, the longer the run and the larger the absolute interest figure.

Balance	APR	Months at min	Total interest	Total paid
$1,000	20%	5 yr 6 mo	$650	$1,650
$2,500	21%	13 yr 3 mo	$3,333	$5,833
$5,000	22%	19 yr 2 mo	$8,100	$13,100
$8,000	23%	23 yr 3 mo	$14,243	$22,243
$12,000	24%	26 yr 9 mo	$22,887	$34,887
$20,000	25%	31 yr 2 mo	$40,532	$60,532

All scenarios use the interest-plus-1% method with a $25 floor. Real-world figures vary by your card's specific formula, fees, and timing of payments. Verify against your cardholder agreement.

Section IV

Does paying the minimum hurt your credit score?

Strictly: no. Paying the minimum on or before the due date is an on-time payment. It does not generate a late mark, does not appear in your payment-history file with any negative flag, and does not directly drop your score.

Indirectly: yes. Credit utilisation (your balance divided by your credit limit) is the second-largest input to a FICO score after payment history. Minimum payments do not move the balance much, so utilisation stays high, so the score sits lower than it would if the balance were being aggressively reduced. Paying more than the minimum lifts the score not because it is more virtuous, but because it shrinks the utilisation ratio faster.

Section V

The CFPB box you have already been ignoring

Find your most recent statement. Scroll to the table that looks something like this:

Minimum Payment Warning

If you make only the minimum payment each period, you will pay more in interest and it will take you longer to pay off your balance. For example: paying off a balance of $5,000 at minimum payments will take approximately 19 years, and you will pay around $8,100 in interest.

If you would like to pay off this balance in 3 years, your monthly payment would be approximately $190, and you will pay around $1,860 in interest.

That box is on every statement, every month, by law (12 CFR § 1026.7(b)(12)). It already gives you the same numbers this calculator gives you. Most cardholders never read it. Read it.

Way out

The fix is not necessarily paying more

Lock the first month's minimum and never let it shrink. On the $5,000 case above, that single behaviour change cuts payoff to about 4 years 10 months and saves roughly $4,990 in interest, with no extra dollars committed up front.

For five concrete strategies (including the lock and the 0% balance transfer), see how to pay off faster.

Questions

Frequently asked

Is it bad to only pay the minimum on a credit card?

Bad in the financial sense, not in the credit-score sense. Paying the minimum on time keeps the account current and protects your payment history. It does not protect your wallet: a $5,000 balance at 22% APR using the interest-plus-1% method takes about 19 years to clear and costs more in interest than the original balance.

How long does it take to pay off credit card minimum payments?

On a typical $5,000 balance at 22% APR using the interest-plus-1% method, payoff takes about 19 years 2 months. With a flat 2% method at high APRs, the math runs into negative amortisation: the minimum barely covers the interest, so the balance lingers for decades. The exact timing depends on your starting balance, APR, and which formula your card uses.

What happens if you only pay minimum on credit card?

Three things, simultaneously. (1) Most of every payment goes to interest, especially in the first few years. (2) The balance shrinks slowly because principal reduction is tiny. (3) The minimum itself drops as the balance falls, which extends the payoff timeline further.

Does paying minimum hurt your credit score?

Not directly. Payment history is intact as long as you pay at least the minimum on time. Credit utilisation is the indirect drag: a high balance against your credit limit suppresses your score, and minimum payments barely reduce utilisation.