In the planning period of the European Regional Development Fund (hereinafter – ERDF) the State Revenue Service (hereinafter – SRS) plans to implement the project “Modernisation of Tax Information Services”, which consists of four sub-projects to be implemented. On implementation of sub-project 1 “Modernisation of Tax Information Services at the MAIS core” 13.03.2017. The SRS concluded an agreement with the Central Finance and Contract Agency on implementation of the European Union Fund Project No.2.2.1.1/16/I/002. The project “Modernisation of Tax Information Services (Payment Accounting and Savings Principle)” is sub-project 2 of the project “Modernisation of Tax Information Services”, which continues the work initiated in Sub-project 1 on the development of an effective, modern technology-based solution, within which it will be developed with the domestic taxes and the principle of saving of SRS will be developed in terms of the number of payments related to fees administered by the SRS. Implement the accrual principle;M2: Introduce a single tax account;M3: As a result of the Movement of the Management Information System (hereinafter referred to as MAIS), the Movement of the Management Information System (hereinafter referred to as MAIS) will be developed as a result of the existing Tax Information System.The design of the following functionality will be developed as a result of the Motion of Taxes. Results of the final project: 1.At the end of the project 12 have been improved and 1 new SRS core activity process was established:1) the creation, organisation and maintenance of cases of a tax payer (hereinafter – NM); 2) Acceptance of tax declarations, processing of data and quality examination according to competence;3) work with non-submitters of tax and informative declaration according to competence;4) accounting of administered taxes, duties and other state compulsory payments according to the competence;3) the work with the non-subscribed tax submitters according to the competence;4) accounting of administered taxes, duties and other state mandatory payments according to the competence;3) the treatment of tax and informative tax submissions according to the competence;4) accounting of administered taxes, duties and other state compulsory payments according to the competence;3) the treatment of tax and information declarations according to the competence;4) accounting of administered taxes, duties and other mandatory payments according to the competence;3) the treatment of tax and informative statements according to the competence;4) accounting of administered taxes, duties and other mandatory payments according to the competence;3) accounting of the tax due (surmounted tax payments) according to the responsibility of the tax and informative tax returns;4) accounting of the administered taxes, duties and other mandatory payments according to the competence;3) The accounting of the tax and informative tax statements according to the competence;4) accounting for administered taxes, duties and other state mandatory payments according to the competence;3) The treatment of tax and information returns according to the competence;4) accounting of administered taxes, duties and other state payments according to their respective competence;3) accounting for the tax and information declarations according to the competence;4) accounting of administered taxes, duties and other state compulsory payments according to the competence;3) The treatment of the tax and informative tax returns according to the competence;4) accounting of administered taxes, fees and other state mandatory payments according to the jurisdiction;3) the treatment of tax and information returns according to the competence;4) accounting of administered taxes, duties and other state payments according to the