Usage of SWIFT at realisation of calculations with corporate clients becomes an important direction in development of settlement infrastructures of banks. This is an effective decision which allows to focus financial streams. All Service bureaus passed certification are published on a site www.swift.com. Connection of new users occurs every month. Migration from connections to FIN on X.25 to SWIFTNet FIN will allow both to users and most SWIFT to cut the expenses by refusal of use of network X.25 and the out-of-date technologies accompanying the given protocol that already takes place in some countries. SWIFT - the co-operative society created under the Belgian legislation belongs to its members - more than to 9000 banks from 209 countries (2010). One SWIFT terminal established at the client is used for an exchange of internal and international messages with all serving banks.