When a loss bundle is created a utilisation rate is calculated for it. This determines the rate at which the losses contained in the bundle can be used to offset assessable income for that bundle.
After a bundle has been created, there are five events that require the utilisation rate to be recalculated. For instance when a new entity joins the group bringing loss bundles with it, the utilisation rate needs to be recalculated. Each of these events has a fraction that is applied to the current utilisation rate in order to adjust it for the event that has occurred.
Tax employs a calculator screen to determine the utilisation rate. The values entered are not retained once the calculator screen is closed. They are simply used to determine the available fraction that is applicable to the bundle. There are 6 events that can cause the available fraction of a loss bundle to be recalculated.