A business case is regarded as the everyday expression of rational decision-making. It provides an objective look at the costs and benefits of a project to decide whether to proceed. It is recommended that as well as the numbers, you need to build organisational and political support for your business case. This ensures that the argument for your business case resonates with those that will be making the final decision, that your stakeholders are united in calling for the project to go ahead, and that it is supported as a solution to the bigger picture issues of the day.