Abstract
<jats:p>The monograph is one of the first scientific studies in Russia devoted to the legal justification of using an insurance contract as an unnamed way of securing an obligation using the example of a leasing agreement. In the course of the research, the author examines the relations between leasing entities that arise in the process of fulfilling a leasing obligation, qualifies the risks affecting the interests of the parties to the leasing agreement, determines the possibility of transforming the identified risks into insurance risks and suggests using only those types of insurance that best meet the needs of the parties to protect the property interests of the parties to the leasing agreement. The monograph formulates the signs of a legal relationship (accessory) that arise between the lease agreement and the insurance agreement, which creates the prerequisites for continuing further research on the use of the insurance agreement as an unnamed way to ensure the fulfillment of obligations. The publication has been prepared according to the legislation as of February 2025. The work is recommended to teachers, graduate students and students of legal and economic educational organizations, practicing lawyers, employees of insurance and leasing companies, as well as those who are interested in this topic.</jats:p>