This text deals with the issues of the financing of the political parties in Slovakia. We are coming out of the assumption that the Slovak system of the political party funding is based on the multi-funding, but the contributions from the government budget will form the most dominant source of the income. This system negatively affects the stability of the political parties and the party system because it does not equally contribute to building a party structure at the regional and local levels. Except earnings, we are also paying our attention to the questions that are connected with the expenditure of the political parties. Our consideration is based on the assumption that the well – institutionalized political parties spend a significant part of their budget for the financing of their organizational structures, i. e. they use their funds for the personnel costs and administrative costs. Regarding the nature of the income that is concentrated at the party in public office (or at party in central office), the majority of the party costs will be spent on the promoting of the party elite (during the election campaign), not on the building of the party structures.