A credit card contract looks simple — a credit limit, an interest rate, an annual fee — but the cost of using one is driven by mechanics that are easy to miss. How interest is calculated, when an interest-free period actually applies, how a balance transfer offer ends, and what counts as a cash advance all change the real price of the card. Australian law requires lenders to set this out clearly, including in a standardised Key Facts Sheet, so the information is there; the trick is reading it before the card arrives.
What is a Interest and Fees?
A credit card contract is a continuing credit arrangement under which a lender extends revolving credit up to a limit. The contract, supported by a Key Facts Sheet, sets out the annual percentage rate for purchases and for cash advances, the annual fee, the interest-free period and the condition for getting it, the minimum repayment, and the fees for late payment, over-limit transactions, foreign currency use, and balance transfers. Australian credit cards are regulated consumer credit, governed by the National Credit Code, so lenders must disclose these terms and lend responsibly.
Red flags to watch for
The advertised interest-free days usually vanish entirely if any balance is carried; you can then be charged interest on new purchases from the day you make them.
Cash advances — including some transactions that do not look like cash withdrawals — attract a higher rate with no interest-free period and often a separate fee.
A 0% balance transfer offer ends after a set period, after which the remaining balance is charged at a high revert rate; many also charge an upfront percentage fee.
Although the law requires payments above the minimum to go to the highest-rate balance, you should confirm how the lender allocates payments so a transferred balance is not kept alive.
Paying only the minimum can mean paying a balance off over many years and several times over in interest; the statement must show how long that would take.
Individually small fees add up; a card with a fee for every kind of activity can cost far more than its headline rate suggests.
Your legal rights
Australian credit cards are regulated as consumer credit under the National Credit Code, which is Schedule 1 to the National Consumer Credit Protection Act 2009. Lenders must give you a Key Facts Sheet in a prescribed form when you apply, disclose all interest rates and fees in the contract, and comply with responsible lending obligations administered by ASIC, including assessing a credit card limit on your ability to repay it within a reasonable period. Reforms require that payments above the minimum be applied to the highest-interest portion of the balance first, ban backdated interest where a closing balance is largely repaid, and require lenders to provide a way to cancel or reduce a card online. The Australian Consumer Law also prohibits unfair terms in standard-form consumer contracts, and disputes can be taken to the Australian Financial Complaints Authority.
Questions to ask before you sign
- 1What is the purchase interest rate, and what exactly must I do to keep the interest-free period?
- 2What is the cash advance rate, what counts as a cash advance, and is there a separate fee?
- 3If there is a balance transfer offer, how long does it last, what is the revert rate, and is there a transfer fee?
- 4How does the lender allocate my payments across different balances?
- 5What is the minimum repayment, and how long would it take to clear the balance paying only that?
- 6What are all the fees — annual, late payment, over-limit, foreign transaction — and when do they apply?
- 7Can I reduce my limit or cancel the card easily, and how?
Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.