determining the effective factors on financing the optimal capital structure in oil and gas companies

Companies have access to a variety of financial resources to implement available profitable investment projects, to settle overdue debts, to increase working capital, and to pay dividends to shareholders. these resources include cash from operating activities and the sale of assets (as intra-organizational sources of financing), borrowing loans from the bank, issuance of bonds, and issuance of new shares (as outside the organization sources of financing). financing and its effects on the returns and risk of the company choose sources that minimize financing costs. then, to prioritize the parameters, the hierarchical method, topsis, and anp were used. the results of this study indicated that the factors of efficiency, cost, sustainability, being operational, fairness, and transparency have been the most important criteria for choosing the financing method, as well as forming sub-consortia, receiving facilities, issuing participation bonds, establishing investment companies, presence in the securities market, creating a shareholder plan, and finally attracting foreign capital have been identified as financing methods. also, the transparency of the financing method in the surveyed companies to identify the appropriate financing method had the least importance.