For both, an existing business, as well as one planned for the future, it is crucial to have exact calculations and prognoses for economic development and growth. Banks especially oftentimes require plausibility calculations. Those must be provided by independent sources, and often over a time frame of up to ten years, to aid the financial institutions in their decision making process during financing discussions and negotiations. In order to judge the sustainable economic development of a given project, it is important that general conditions, i.e. contract period as laid out in the agreement, are investigated. Also, management’s ability in designing and developing operational procedures as well as creative marketing plans should be examined. On the basis of monthly detailed plans, seasonal fluctuations and segment-specific demand changes must be evaluated as well.