21. The Investment Programme Level Assessment should be carried out as part of the development of an individual project's Initial Gate Business Case (IGBC). HMT requires that the Investment Programme Level Assessment tests the potential value for money of procurement options when overall investment decisions are made, to ensure PFI is used only in those sectors where it is appropriate and where there is a good value for money case. It also requires that departments provide sufficient budget flexibility to accommodate subsequent decisions not to use PFI.