Interest calculator

How it works

Enter the amount, the due date and the date you are calculating to. In Queensland, choose the contract rate or the QBCC Act section 67P penalty rate for building contracts.

Under section 73 of the BIF Act, interest runs at the greater of the contract rate and the rate for a money order debt under the Civil Proceedings Act 2011 (Qld), or at the section 67P penalty rate where that section applies. NSW and VIC use the rates set under their own Acts.

The calculator gives an estimate. Check it against the contract and the Act.