From the literature above we can conclude that both the pioneering theories (trade-off and pecking order) are not mutually exclusive and optimal leverage ratio can be obtained by few explanatory variables. According to trade-off theory, to reduce taxable income profitable firms tend to issue more debt. On the other hand, argument of pecking order model is different in a sense that profitable firms would try to reduce their debt level in accordance with the rule that internal funds must be chosen first, and when retained earnings are not adequate, policies must be switched to external financing. Evidence also supports the market timing theory that is; managers wait for the stocks‟ position to get better before new issuance