Project finance is where project debt and equity is used to finance the project. This is frequently used in large infrastructures and industrial projects and does not require the sponsors of the project to put up their own balance sheets in order to obtain the necessary financing. In general, the project financing is built into the company budget and specific financing is requested based on a projected budget for a single project. 
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In order to ensure that the project is successful that the budgets are met, there are certain assumptions that are made at the beginning of the project. These often involve educated projections that are obtained from experts. When a plan is drawn up for a project, items that impact the project budget include the amount of people needed to successfully execute and complete the project, material needs of the project and equipment needs. In addition, the end product must also be valued to provide information such as depreciation which would be included in the project management budget. All of this is necessary for effective project cost management.