If you hold a CFD position overnight you may be liable for a financing charge or benefit. If you are long on a Share, Index or Sector CFD overnight you may pay a financing charge to your CFD broker, while if you hold a short position you may receive a financing benefit from your CFD provider. In summary, if you have a long CFD position you will have to pay interest (normally at the official interest rate set by the RBA + a profit margin (around 1-2%)) and if you have a short position you will get paid the interest into your trading account (which is usually the interest rate minus the profit margin for the CFD broker).
If you are day trading with the CFD and you close all your positions by end of trade and effectively don’t hold the Share, Index or Sector CFD position overnight, you will not be charged a financing fee or be paid a financing benefit. Trading forex attracts a financing charge called a Rollover.