Credit institutions (banks) involved in the calculations as operators (agents) are professional intermediaries in monetary engaged in banking operations, the remuneration for the performance of which is one of the articles of their income as «burdening the activity of a person obliges him to compensate for time spent and strength»[84].
To increase their competitiveness and attractiveness, credit institutions form a network of branches and representative offices, is one of the options for resolving the issue. Another is the result of the expression «do not have a hundred rubles, and a hundred friends» through the establishment of correspondent relations and opening of accounts Loro and Nostro lenders time keeping remains at the required volumes, can meet the customer need to transfer funds within the framework of international economic cooperation in light of its of interest. However, one should consider the risks of interbank loans, the level of which is usually lower than on loans to customers[85].
For the calculation of commercial banks – one of the main areas of activity[86]. Development of International Settlements is the ratio of static models taken from the overall dynamics of the use of tools and execution of financial obligations in the framework of international economic cooperation.
Payment method is a method of performance, and its choice depends on several factors caused, first of all the aspirations of the parties and their level of interaction. In mathematical science is the concept of «+» infinity and «-» infinity, which are impossible to achieve the aspiration of a point. In organizing the settlement of relations among the parties such aspirations. At the same psychology of their actions is as follows.
The motive for the entry into the relationship and the cause of their activity is originated and unmet need. One side needs to be in the product or service, and another, being able to provide a service or product having wished to implement their own capacity for adequate compensation, and preferably in the form of «silver, which goes from the merchants»[87] accounting currency. Although depending on the arrangements and the needs of the parties in practice meets the set of combinations of forms of payment. However, the essence remains the same one of the parties expects the execution of financial obligations, and agrees to comply with it is different with the appropriate correspondence.