Most credit cards have either “up to 44 days” or “up to 55 days” interest-free. But, be wary. It doesn’t mean you get 44 or 55 days interest-free from the moment you buy something. The “44/55 days” refers to from the start of your statement cycle to your statement’s due date. This is what we mean by “up to”. So you could get between a week interest-free or a maximum of 44 or 55 days.

Paying your closing balance in full is the best strategy. Remember if you don’t pay it in full each month, you don’t get your interest-free period.
Unpaid balance transfers mean no interest-free days.
If you haven’t repaid a balance transfer, all other purchases will earn interest immediately. There are no interest-free days. Only once you’ve repaid a balance transfer will your interest-free days resume normally.

One of the cards on offer now is: Amplify Platinum Card from St George Bank:
30,000 bonus Qantas or Amplify Points on a new card, when you spend $2500 within 90 days from card approval. Exclusions apply.
0% p.a. for up to 6 months on purchases from card approval.
0% p.a. for 18 months on balance transfers, requested at card application1

Your choice of rewards programs, with Platinum extras
All the benefits of Amplify plus:
Double points on international spend
A range of complimentary insurance covers – including overseas travel insurance and extended warranty on purchases as set out in the policy
24/7 Visa Concierge service
All for a low annual fee of $99.
Existing St.George customers can also enjoy a $0 annual fee for the first year.