The aim of this paper is to investigate the process of long term planning of sustainable business support system from the perspective of stakeholders involved in the process of planning. The research is based on the case study of the planning process of the support system to support sustainable business development in Jelgava municipality till 2028. Findings are based on the analysed results of working groups (focus groups), that were organised in Jelgava city and Jelgava municipality during years 2016-2017. The findings of this research reveal that main challenges of long- term planning support systems for sustainable business is closely related to limited abilities to see the planning perspective which is longer than 4 years and poor understanding of the concept of sustainability. The assumptions of reasons of key challenges have been presented. The conclusions consist of considerations that need to be considered in order to achieve the long-time strategy for establishment of the sustainable business support system.