The leasing and factoring sector fills a gap in the process of access to finance, which is of vital importance for companies today. In addition to its micro-level contributions such as access to financing, receivable collection, risk management, access to longer-term and cost-effective financing, it also provides a number of contributions at the macro level such as ensuring economic growth through the funds provided. In this context, the development of sectors is important in ensuring financial development and financial depth, which is an important part of the economic development process. This study aims to present the financial performance of financial leasing and factoring companies operating within the BIST between 2018 and 2022 in comparison with the sector averages by means of ratio analysis method, and to provide some suggestions for improving financial models in the development process. It has been concluded that the companies operating within the BIST exhibit higher performance in most of the performance items in the period preferred for the study. The direct effects of effective non-performing loan management, strong capital structure, effective income and expense management, and access to long-term and cost-effective funding sources with the effect of shareholding structures can be seen in achieving this result.