Abstract. Although seen as a sector with a high degree of inertia and conservatism the public administration system determines the public institutions to record a set of influences both from the internal and external environment. The public administration system is influenced by the frequent legislative changes and recently by the requirements claimed by the European Union. Given the complexity and dynamics of the competitive environment the approach of strategic management tools at the level of public administration becomes more and more important and necessary. One of the main types of exercise of strategic management is represented by financial planning moulded into policies, strategies, plans and programmes whose generation is based on multiannual budgets.

Keywords: economic-mathematical modelling; multiannual budgeting; regression; income sources for the local budget; determinants.