Value Added Tax (VAT) system – Information System IT IS EU. This system completed in pursuit to improve the VAT payer registration by empowering easy and user friendly e-services development. The system was dedicated for computerized workplaces which are local and geographically distant. The automatized VAT payer’s registration electronic service was created. The project has helped to ensure the tax payer data security and transparency, operative and effective information transfer and exchange between public administration institutions and tax payers.