The contract on the assignment of a monetary claim is governed by the provisions of Articles 80-89. of the Obligations Act, whereby the assignor transfers to the recipient a specific monetary claim that he has against a specific debtor, together with all secondary rights (right of first payment, mortgage, right of lien, right from the contract with the guarantor, interest, costs, contractual penalty, etc.) In legal transactions, this contract is often used in the activities of certain companies and financial institutions that deal with the purchase and sale of monetary claims. In order to collect such monetary claims secured by a lien on real estate, their owners, the lien creditors, appear in bankruptcy proceedings in which, according to the provisions of the Bankruptcy Act, they have the legal position of separate creditors, which enables them to be settled separately from the real estate on which they have a registered lien. During long-term bankruptcy proceedings, further assignment of monetary claims of different creditors is also possible. The presentation of several characteristic cases of assignment of monetary claims of different creditors in several bankruptcy proceedings will show the application of the described contract with its specific specificities. All of these examples have in common that the monetary claims that are the subject of the presented assignment agreements were created by the credit activity of the banks, and that the banks sold their outstanding claims against the loan beneficiaries to certain specialized companies dealing with the redemption of monetary claims, and that these companies then acted as recipients. of the assigned claims further assigned the same to other assignees with an agreed fee. These receivers either sold the assumed claims or took the necessary actions themselves in the bankruptcy proceedings as separate creditors in order to settle them. This type of contract can be considered an important legal instrument for achieving economic effects in order to achieve significant income, i.e. profit through realized differences between compensation for assigned claims and the amount achieved by settling the monetary claim itself in bankruptcy proceedings.