Minimum Payment Calculator

What the minimum payment on a card is

Every card statement shows a minimum payment, and most people read it as the amount they are supposed to pay. It is not. It is the smallest amount the issuer will accept before the account counts as past due, and it is built to keep the balance alive for a long time.

The formula most issuers use has two parts: a percentage of the balance, usually 1% to 3%, plus the interest charged that month. Some add fees. A floor of $25 or $35 catches small balances, so a $200 balance still asks for $35 instead of $2.

The Credit CARD Act of 2009 requires each statement to show how long the balance would take to clear if you paid only the minimum, and that disclosure exists because the answer is usually shocking. A 2% minimum on a normal card rate means a decade or more, not a few months.

How the calculator runs each month

Each month the calculator does the same four things a card company does.

• Charges interest on the balance: balance times APR divided by 12
• Sets the minimum: the larger of the floor and the percentage of the balance plus that interest
• Applies your payment, extra included
• Carries what is left into the next month

The loop stops when the balance reaches zero, and the month count is the answer. Interest is charged before the payment lands, which is why a payment that looks generous does less than people expect. On a $5,000 balance at 24%, a $200 payment sends $100.00 to interest and $100.00 to principal. Half the money does nothing for the debt.

Two details matter for reading the result. The minimum falls as the balance falls, so the payment shrinks every month instead of staying level. And the floor takes over near the end, which is why the last payments are small and the final one is a few dollars.

Worked example: $5,000 at 24% APR

Take a $5,000 balance at 24% APR with a 2% minimum and a $35 floor, no new charges.

Month one: interest is $5,000 x 24% / 12 = $100.00. The minimum is 2% of $5,000 plus $100.00, or $200.00. After the payment the balance is $4,900.

Month two: interest is $4,900 x 2% = $98.00, the minimum is $196.00, and the balance is $4,802. The balance drops 2% a month, and 2% a month needs 122 months to reach zero. That is 10 years and 2 months on a debt most people plan to clear in two or three.

Total interest across the run is $4,475.10 and total payments are $9,475.10. The final payment is $9.62, a number almost nobody sees, because by then the statement has been ignored for years. Notice that the interest bill is 89.5% of the original balance: you borrow $5,000 and hand over $9,475 to be rid of it.

One percent, two percent, three percent

Minimum percentages vary by issuer and by credit history, and the same balance behaves differently across the range. This is the same $5,000 at 24% with a $35 floor, changing only the percentage.

One point of minimum is worth thousands. At 1% the balance runs 201 months, almost 17 years, and the interest bill is $8,441.75, or 168.8% of what you borrowed. At 3% it runs 91 months and the interest is $3,069.51. Same debt, same rate, $5,372.24 of difference in interest, all of it decided by the issuer's formula rather than by you.

That is the trap in the design. The lower the minimum, the more the issuer earns, and the friendlier the payment looks on the statement.

When the interest passes the balance

The interest bill crosses the principal on most cards once the minimum sits at 1%. On $5,000 at 24% the 1% minimum costs $8,441.75 in interest against $5,000 of principal, so you pay $1.69 for every dollar you spend.

Small balances at high rates get there sooner in percentage terms. $3,000 at 29.99% with a 1% minimum runs 161 months and costs $5,773.37 in interest, close to twice the balance. At 2% the same $3,000 takes 100 months and $3,148.33, which is still 104.9% of the principal.

Compare that with a card at 18%. $5,000 at 18% with a 2% minimum takes 118 months and costs $3,315.53 in interest, against $4,475.10 at 24%. Four months of payoff time for $1,159.57 of interest: the rate barely moves the calendar but it moves the bill.

What an extra payment does

An extra payment goes straight to principal, because the interest for the month was already charged. That is why a small extra amount beats a small rate cut, and why the effect compounds.

Fifty dollars a month clears the $5,000 in 52 months instead of 122 and cuts interest from $4,475.10 to $2,263.28. That is 70 months and $2,211.82 for the price of a streaming bundle, and the money is not spent, it is the same debt retired sooner.

Twenty-five dollars does most of the work already: 71 months and $2,959.86. If $50 is not in the budget, $25 set up as an automatic transfer on payday is still worth doing. The point is to stop the balance from setting the payment.

Which lever to pull first

Three levers exist: the balance, the rate and the minimum percentage. The table shows the first two on a 2% minimum with a $35 floor.

Payoff time barely reacts to the rate. On $5,000, going from 18% to 29.99% adds seven months but adds $2,331 of interest, because the minimum is a percentage of the balance plus interest, so the principal falls at the same 2% a month whatever the rate. The rate decides what the debt costs. The percentage decides how long it lives.

The balance is the strongest lever of the three. Moving from $5,000 to $10,000 adds 34 months and exactly $5,000 of interest at 24%. That cuts both ways: every $1,000 you pay down early removes roughly $1,000 of future interest on this schedule, which is why a tax refund or a bonus aimed at the balance does more than a rate negotiation.

Routes out that are not the minimum

The minimum is a floor, not a plan. Four routes get out faster than paying it.

• Balance transfer. A 0% offer for 12 to 21 months stops the interest clock but charges a 3% to 5% fee. Moving $5,000 at a 3% fee costs $150, and $5,150 over 18 months is $286 a month. Compare that with 122 months of minimums.
• A personal loan. $5,000 at 11% over 36 months is about $164 a month with roughly $900 of interest. It converts a revolving balance into a fixed one, which is the real benefit.
• A hardship plan. Call the issuer and ask for the hardship or debt management department. Rates can drop to 6% to 10% and the card closes, which stops new charges.
• Stop adding to the balance. A card that carries a balance and takes new charges every month can run forever, because the minimum is calculated on a balance that keeps refilling.

Nonprofit credit counseling agencies offer debt management plans that negotiate rates across all cards at once, and the CFPB credit card guides explain what a servicer may and may not charge. The CFPB answers page covers minimum payment rules by issuer type, and the Federal Reserve publishes the consumer credit data behind the national averages.

This is an estimate for planning, not financial advice. Issuers change minimum formulas, floors and grace periods, so check your own statement terms before you rely on a number.