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💳 Loans & Debt

Credit Card Interest

See how much interest your credit card charges and how long it takes to clear the balance.

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This Month's Interest
Interest per Year
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Months to Clear
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Total Interest
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Total Repaid
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About This Credit Card Interest Calculator

This free credit card interest calculator shows how much interest you are charged this month and over a year if the balance stays the same, plus how long it would take to clear the balance at a fixed monthly repayment. Credit card interest is charged daily on the outstanding balance and added monthly.

This is general information only and not financial advice. If credit card debt is becoming hard to manage, free confidential help is available from the National Debt Helpline on 1800 007 007.

Frequently Asked Questions

Why is credit card interest so high?+
Credit cards are unsecured revolving credit, so rates are higher than secured loans — often around 18–22% APR in Australia.
How do I avoid paying credit card interest?+
Pay your closing balance in full by the due date each month. Within the interest-free period, purchases then attract no interest.
I'm struggling with card debt — where can I get help?+
Free, confidential financial counselling is available from the National Debt Helpline on 1800 007 007. This calculator is general information only, not financial advice.

Related Tools

→ Debt Payoff Calculator→ Loan Calculator→ Emergency Fund

RELATED GUIDE

How Credit Card Interest Really Works

A clear guide to credit card interest: how it is charged, what the interest-free period really means, why minimum payments are a trap, and how to escape it.

Read the full guide →