Abstract. The elaboration of some coherent strategies of development of the long term firms requires the existence of material resources which ensures, besides other necessary competences, the development and the pereniality of the firm. The enterprise has multiple choices of financing its activities: the credit lines, the treasury lines, the discount of the commerce effects, factoring, and leasing and investment credits. Tasking into account the Romanian market, one notices that the most important financing source at which the enterprises appeal to is represented by the nongovernmental credits. The main purpose of the article is to determine how the modification of the rate of interest can influence the structure of the capital and which are the particularities of this dependency for the Romanian market.

Keywords: rate of interest; degree of indebtedness; credits; termanent capital.