“…In the literature studies conducted, which examines the relationship between capital structure and financial performance "Güneysu, Atasel and Şeker (2021), Ngoc,Tien and Thu (2021); Le and Phan, 2017;; ; ; Salim and Yadav (2012); by " found a negative relationship between capital structure and ROA and ROE. While in the mentioned studies, the relationship between capital structure and financial performance was examined, in this study, the effect of cost of debt on financial performance was examined.…”