The Finance Algorithm

Minimum Payment Calculator

See how long it takes to pay off debt with minimum payments only

Updated October 2026Built and checked by MaverickHow it's calculatedReport an error

Your numbers

Updates as you type
$
$5k
%
21.24%

Purchase rate from your statement. RBA average for standard cards: 21.24%

%
2%

From your statement or key facts sheet. Moneysmart says it's typically 2% or 2.5%

$
$20

The dollar minimum that applies when the percentage is less. Moneysmart says it's usually around $20

$
$100

Additional amount above minimum

The button asks our AI to explain these figures in words.

Minimum payment trap

Min only - years

Never

$26,576 interest

With extra

3.9 yr

+$100/mo extra

Interest saved

$24,505

553 months faster

Initial minimum

$102/mo

decreases as balance falls

Interest cost at different extras

Each extra $50 a month cuts both the interest and the time it takes.

$26,576Min onlynever pays off$3,793+$5086 mo$2,072+$10047 mo$1,102+$20024 mo$585+$40013 mo

Path with +$100/mo extra

Adding even a small extra payment steepens the early curve.

$0$1,250$2,500$3,750$5,000Mo 0Mo 10Mo 18Mo 28Mo 36Mo 46
Minimums are a trap. Banks engineer the % minimum to keep you in revolving debt for decades. On a 2%-of-balance minimum at 20% rate, you can spend more than twice the original balance in interest. Any fixed amount above the minimum makes a big difference, even $50 extra is worth thousands.

How it works

A credit card's minimum repayment is a small share of the balance, so paying only the minimum leaves most of the debt accruing interest for years. Enter your balance, rate and your card's minimum repayment rule to see how long the card takes to clear at the minimum, the interest it costs, and how much an extra amount each month saves.

  1. 1Enter your current credit card balance
  2. 2Add your card's purchase rate
  3. 3Enter the minimum repayment rule from your statement: a percentage of the closing balance and a dollar minimum
  4. 4Optionally add an extra monthly payment
  5. 5Compare payoff time and interest

The figures today

As of 7 November 2026, the lowest credit card purchase rate is 7.49%, from Unity Bank's Low Rate Visa Credit Card, while the typical best across 51 institutions is 12.49%.

Worked examples

$5,000 at the Minimum

$5,000 balance at 20% a year. The minimum is 2% of the closing balance or $20, whichever is more, so it starts at about $102 and falls as the balance falls.

Current balance
$5,000
Interest rate
20%
Minimum repayment (% of closing balance)
2%
Minimum repayment in dollars
$20
Extra monthly payment
$100

Paying only the minimum takes 547 months, over 45 years, and costs $19,345 in interest. Adding $100 a month to the minimum clears it in 46 months with $1,894 in interest.

Questions people ask

Why are minimum repayments so low?
The minimum is set as a small percentage of the balance, typically 2% or 2.5% according to Moneysmart. At credit card rates, a large share of that goes on interest, so the balance falls slowly and the minimum falls with it.
What happens if I only pay the minimum?
The balance takes a long time to clear and you pay interest the whole time. At 20% a year, a $5,000 balance paid at 2% of the balance (or $20 if more) takes over 45 years and costs more than $19,000 in interest.
How much more should I pay?
That depends on your budget. The extra-payment bars show the payoff time and interest for $50, $100, $200 and $400 a month above the minimum, and the payoff calculator works out the payment that clears the card by a date you choose.

The terms, in plain English

Minimum Repayment
The least you must pay each month, usually a percentage of the closing balance or a set dollar amount, whichever is more.
Closing Balance
What you owe at the end of the statement period, including that month's interest and fees.
Principal
The amount you owe before interest. Only the part of a repayment left after interest reduces it.

Official sources