Credit Cards: How to Use Them Without Falling Into Debt
A credit card is a useful tool when paid off in full each month, and an expensive trap when it isn't — the difference comes down to a few habits, not luck.
Compare the Comparison Rate, Not Just the Headline Rate
Australian credit providers are required to display a 'comparison rate' alongside the headline interest rate, folding in most standard fees to give a more accurate picture of the true annual cost. Compare the comparison rate across cards, and always aim to clear the balance in full each month, since interest typically starts accruing immediately on new purchases if any balance is carried over from the previous statement.
Watch the Minimum Payment Trap
Paying only the minimum payment each month stretches out how long it takes to clear a balance and multiplies the total interest paid — often taking years and costing hundreds or thousands of dollars more than paying it off faster. Many card statements include an estimate of this cost; read it before assuming the minimum payment is a reasonable long-term plan.
0% Cards and When They Make Sense
0% purchase or balance transfer cards can be genuinely useful for a large planned expense or consolidating existing debt, provided you have a real plan to clear the balance before the promotional period ends and the standard interest rate kicks in — check the balance transfer fee too, since it can offset some of the saving. If you're not confident you'll clear the balance in time, the promotional rate can end up costing more than it saves.
Frequently Asked Questions
- What does 'comparison rate' mean on an Australian credit card?
- A rate that folds in most standard fees alongside the headline interest rate, giving a more accurate picture of the true annual cost — compare the comparison rate across cards, not just the advertised headline rate.
- Why is paying only the minimum payment a bad idea?
- It can take years to clear the balance and cost hundreds or thousands of dollars more in interest than paying more each month — check your statement's cost estimate before treating the minimum payment as a reasonable plan.
- Are 0% credit cards worth using?
- They can be, for a large planned purchase or debt consolidation, but only with a clear plan to pay off the balance before the promotional period ends, since the standard interest rate applies to any remaining balance afterwards.
- What should I check before getting a balance transfer card?
- The length of the 0% period, the balance transfer fee (which can offset some of the saving), and the standard interest rate that applies once the promotional period ends.
Informational content, not financial, tax, or legal advice. Verify amounts, limits, and current conditions directly with official sources (ATO, ASIC, APRA) before making a decision.
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