Fiscal impact studies evaluate the impact new growth has on local budgets. The question "Does growth pay for itself?" is of increasing concern in many communities across the country. A GIS has been developed and linked to a customized fiscal impact model utilizing the case study marginal cost approach. What-if scenarios can be drawn on a map and instantly analyzed. Tischler and Associates, Inc. (TA), has conducted over 300 fiscal analyses with their proprietary software systems. This paper focuses on TA's new GIS fiscal impact system.