Way to the further perfection and decrease in expenses Annually through SWIFT passes 2 5 billion payment orders. The given service allows the financial organisations to connect to the SWIFT network of the big clients correspondents branches and affiliated structures and also to establish for them rules of realisation of calculations. The Service bureau is the non-financial organisation created under direct control and annual audit by SWIFT (Belgium). The integrated package of administered services of transfer of the formalized messages SWIFTNet FIN gives access to FIN service by means of SWIFTNet using IP connections. Infrastructure of SWIFTNet includes a set of completely administered services of safety of the information constructed on the basis of technology PKI. To large corporations besides traditional advantages of SWIFT (reliability speed safety and financial responsibility) usage of the given service allows to apply a principle of "a unite window at work with several banks.