An agreement which has been appropriately drafted and executed, and which provides for the periodic payment of child support can be registered for collection with Services Australia-Child Support. Agreements for non-periodic payments (such as school fees) cannot be enforced by the Services Australia-Child Support.

Services Australia- Child Support cannot enforce verbal agreements.

An agreement cannot exclude collection of the liability by Services Australia – Child Support, even if expressed to do so. If the payments are not made voluntarily in accordance with the agreement, the payee can ask Services Australia-Child Support to commence collection of periodic payments.