Two data collection methods, digital and research, have been used to study the topic of this paper. The central part of the paper is divided into nine chapters, each of which deals with the relevant subject matter. The topic „The Project of electronic office business in the Republic of Croatia" was chosen in order to find out more about what electronic government (e-Government) is and how it functions in Croatia. Writing this paper leads to many conclusions about e-Government. New concepts have been recognised and the subject matter itself makes it evident that the Republic of Croatia is devoting ever greater attention to e-Government and is trying to build a system through which the citizens would be able to obtain information most easily. What has also been studied in detail are the results of a study on the presence of citizens on the Internet that focused on four segments, namely economic presentation via the Internet, doing business via the Internet, democracy via the Internet and business Internet organisation systems. Furthermore, since e-Government also presupposes certain IT equipment (computers, Smartphone’s etc.) and the citizens' ability to use these programmes, the persons finding it hardest to adapt themselves to this system are the elderly and retirees. As a result, in order for this whole system to be efficient and more citizen-friendly, it is necessary to take certain steps. The treatment of these topics casts light on how the foundations of e-Government in the Republic of Croatia were laid and what provisions regulate the matter, what the degree of development of e-Government In particular countries depends on and what this entails, including which countries have gone the farthest in this respect, and what the EU requirements in respect of governance are. Two strategies allow ing for a better understanding of the overall topic of the paper as well as their purpose are explained and the preconditions which a country is required to fulfil in order to be able to build both the entire system of e-Government and its essential components are defined. Treating this topics allows one to better grasp the electronic office business project itself and the process of its introduction. This paper also deals with both the principles of e-Government and the principles relating to the latest action plan for the development of e-Government in the EU for the 2016-2020 periods and I hope it will be possible to implement it as envisaged.