Creating a Project Budget

The actual process of developing a project budget is straightforward. The general challenges lie more with omissions and the foundation the budget is based upon. In this section, we will review the details of the develop budget and finalize budget steps that we have depicted in our general project planning process flow (see Figure 9.1).

Figure 9.1. The budget-focused planning steps.

 

Sources of Project Costs

The first step in building a project budget is to identify your costs. This sounds easy enough, right? Let's review the cost sources that need to be considered. These cost sources are summarized in Figure 9.2.

Figure 9.2. The budget costs to consider.

 

Develop Initial Budget

Once we have our resource requirements and work duration estimates, we can start to develop the budget. Like the estimates for work, it is best to estimate your costs at the work package level. By taking a bottom-up approach, you are in the best position to identify all of your resource needs and develop a more realistic budget. In addition, many industries and organizations have cost estimate models that can be leveraged, too. These models are best used during initial planning activities and as a cross-reference and validation tool for your detailing planning efforts.

Unless your organization has invested in an enterprise project management application with an emphasis on project costing or you have advanced skills in project scheduling software, I recommend the use of spreadsheet software (such as Microsoft Excel) for your project budget. I favor the spreadsheet approach for three principal reasons:

Most project scheduling software programs offer a resource schedule that will show the total hours (and total costs) that each resource incurs each over the desired time period. This feature can be very helpful to your budgeting process.

The two keys for setting up your project budget are to set a line item for each cost source and to use columns for each time phase (period) that will be tracked.

Finalize Budget

Once the schedule nears completion and the actual resources have been identified, we can finalize the project budget. Besides firming up rates on resources and estimates on other cost factors, there are several objectives to accomplish in this step.

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