The aim of this study is to try to identify the impact of the application of Value Added Tax on the development effectiveness of the knowledge economy under the vision of 2030. The problem of the study lies in trying to answer the main question; What is the impact of applying Value Added Tax on the development effectiveness of the knowledge economy in Vision 2030? The study concluded that there is a reciprocal and complementary relationship between the imposition of value added tax and the development effectiveness of the knowledge economy. Value added tax has economic effects on both the business sector and tax administration and on government revenues. The researcher reached a proposed framework to activate the role of Value Added Tax on the development effectiveness of the economy Knowledge: This framework is based on five axes: to examine the reality of the application of value added tax, to study the chances of success, to know the challenges facing the application of value added tax, to determine the nature of the relationship between Value Added Tax and effective The development mechanism of the knowledge economy, to determine the requirements of the success of Value Added Tax to achieve its development goals, and adopted the researcher descriptive analytical approach in dealing with the subject of research.

The oil market has become in recent years more volatile risking the oil-exporting countries’ internal and external financial balances to serious imbalances, which in turn threaten their economic development process. To confront those challenges, those countries including Algeria have to find alternatives which enable them to diversify their economies and exit from the excessive oil dependency. The aim of this paper is to explore the potential alternatives that can enable Algeria to diversify its economy and achieve the desired take-off. Among those alternatives is to promote the benefit from the existing Arab economic integration institutions and bodies, in view of the advantages that the integration can offer to Arab countries to explore the human and natural resources and promote intra-trade and investment.

In the light of global changes and new environmental challenges, the green economy emerged as new paradigm to provide solutions to these crises. The green economy aims to achieve economic development through environmentally friendly projects and using new technologies in the field of renewable and clean energies. In this context many countries seek to develop a vision for launching an economy based on the strategy of transition to green economy, and this study aims to reveal the green economy projects in Arabic countries and aims to clear the concept of green economy as a new paradigm, and to identify the economic and social benefits of green economy and show the most important projects in this area. Finally we given some proposals to achieve this goals.