The purpose of the article is to substantiate the theoretical and applied aspect of ensuring the effectiveness for the strategy of financing the working capital at the enterprise. Methodology of research. The achievement of the purpose set in the article is carried out with the help of the following research methods: logical generalization and scientific abstraction, structural analysis, analytical method. Findings. The optimization of the capital structure at the enterprise on the basis of identification of the need for incoming and outgoing cash flows is offered; compliance with the rules of working capital formation at the enterprise (golden rule of financing, golden rule of balance); the choice of sources of financing the assets at the enterprise and taking into account the criteria of minimizing the level of financial risk and the timing of raising capital. The need for replenishment of working capital is determined and the conditions of observance of the optimal structure of working capital are offered. It is proved that the result of the proposed approaches is increased forecast values of financial ratios, which are aimed at improving the level of financial stability, liquidity and solvency of the enterprise. Optimization of the capital structure is the basis for ensuring the effectiveness of the working capital financing strategy. Practical value. The basis for ensuring the effectiveness of the working capital for financing strategy of PRJSC “KREMENCHUG DAIRY PLANT” (PRJSC “DANONE KREMEZ”) is proposed to adhere to a conservative approach to financing. This involves the use of equity and longterm liabilities to form non-current assets and half of the variable part of current assets, including cash, other current assets and deferred expenses. The need to attract additional working capital is proved and the optimal capital structure is proposed: financing of 80 % of equity by 20 % of debt. This approach helps to ensure financial independence from external sources of financing, hedge financial risks and preserve the financial stability of the company. The use in practice of the proposed theoretical and applied approaches will increase the effectiveness of the strategy of working capital financing in the enterprise. Keywords: formation rules, choice of funding sources, risk minimization, effectiveness, strategy, working capital, structure, optimization. REFERENCES 1. Deineka, O.V. & Yurchenko, K. M. (2012). Optymizatsiia struktury dzherel formuvannia oborotnoho kapitalu pidpryiemstva [Optimization of the structure of sources of working capital of the enterprise]. Innovatsiina ekonomika - Innovative economy, 3, 257–260 [in Ukrainian]. 2. Koshelok, H. V., Koval, V. V. & Belik, D. O. (2015). Teoretychni osnovy optymizatsii struktury oborotnykh koshtiv pidpryiemstva [Theoretical bases of optimization of structure of working capital of the enterprise]. Zovnishnia torhivlia: ekonomika, finansy, pravo – Foreign trade: economics, finance, law, 1, 50–57 [in Ukrainian]. 3. Maiboroda, O. V. & Khlopkova, S. Yu. (2018). Optymizatsiia struktury kapitalu ta yoho vplyv na finansovyi potentsial pidpryiemstva. [Optimization of capital structure and its impact on the financial potential of the enterprise]. Efektyvna ekonomika – Efficient economy, 12. Retrieved from http://www.economy.nayka.com.ua/?op=1&z=6763 (accessed 29 July 2020) [in Ukrainian]. 4. Parkhomenko, O. P. (2012). Oborotnyi kapital v umovakh hlobalnykh vyklykiv: formuvannia ta vykorystannia [Working capital in the context of global challenges: formation and use]. Luhansk: Vyd-vo “Noulidzh” [in Ukrainian]. 5. Khromushyna, L. A. Finansova rivnovaha pidpryiemstva: metodolohichnyi ta praktychnyi aspekt otsinky [Financial balance of the enterprise: methodological and practical aspect of evaluation]. Retrieved from http://www.confcontact.com/2017pecproekt/%D0%95%D0%9A8_Hromushina.htm (accessed 19 July 2020) [in Ukrainian]. Published: 2021-05-27