Au siècle dernier, la Turquie moderne a adopté les principes de démocratie et de laïcité. Parvenue à la stabilité politique, elle connaît aujourd’hui une croissance économique stable et pérenne qui lui permet de jouer sa partition au niveau international. La Turquie est passée du modernisme inhérent à l’idéologie ataturkienne à un modernisme qui s’inspire aujourd’hui des principes occidentaux en les adaptant à sa conjoncture économique et à ses valeurs sociales. En matière d’imposition des bénéfices des entreprises, la législation fiscale joue un rôle essentiel. L’accroissement des échanges économiques de la Turquie avec les pays étrangers, notamment ceux de l’Union européenne, amène le législateur fiscal turc à donner une dimension internationale à la fiscalité d’entreprise. Il témoigne de sa volonté de modernisme et de ses préoccupations internationales en accordant, depuis le début des années 2000, une importance toute particulière aux exigences de l’OCDE et de l’Union européenne. Il s’applique à faire de la fiscalité d’entreprise une fiscalité compétitive au service du développement économique et à garantir les droits des entreprises afin qu’elles bénéficient d’une sécurité juridique réelle. Par voie de conséquence, la perception du contribuable turc à l’égard de l’État évolue, passant d’une conception ad nominam – qui accorde la primauté à ceux qui dirigent le pays – à une conception ad valorem – qui accorde la primauté à la valeur des dispositions fiscales. / Last century, Turkey adopted the principles of democracy and secularism. It has reached political stability and is now experiencing a stable and durable economic growth that enables it to play a role on an international scale. Turkey has gone from a modernism inherent to the Ataturk ideology to a modernism inspired by Western principles, adapting them to its economic situation and its social values. As regards taxation on firm profits, fiscal legislation plays an essential part. The increase of economic exchanges between Turkey and foreign countries, especially those belonging to the European Union, leads Turkish fiscal laws to give an international standing to the firm tax system. It has shown its will of modernism and its international preoccupations by attaching a specific importance to the requirements of the OECD and the European Union since the beginning of the 2000s. It makes every effort to turn firm taxation into a competitive tax system serving the economic development and to guarantee the rights of the firms so that they have a real juridical security. As a result, the collection of Turkish taxpayers to the state is evolving, going from a conception ad nominam – prioritizing the leaders of the country – to a conception ad valorem – prioritizing the value of fiscal measures.

Many low-income countries desire to implement and adopt digital government as a springboard for economic and social development but face many challenges. The United Nations identifies that Africa has especially lagged consistently in digital government development and adoption. Most scholars largely attribute the challenges to infrastructure and skills, and often rhetorically cite culture as playing a strong role. This study specifically examined the role of indigenous African culture (‘spirituality’, ‘communalism’ and ‘respect for authority and elders’) and internet access on the adoption of digital government services (e-filing and e-payment of taxes) by Small and Micro Enterprises (SMEs) in Zambia, with the Unified Theory of Acceptance and Use of Technologies (UTAUT) as the underpinning theoretical lens. Data analysis was done using Structural Equation Modelling with principal attention given to the moderating and mediating influence of indigenous African culture. The influence of internet access on the intention to adopt digital government was also examined. The findings from the cross sectional study of 401 tax registered SMEs suggests that ‘spirituality’, ‘African communalism’ and ‘respect for authority and elders’ have significant negative moderating effects on the adoption of e-filing but not on e-payment; and ‘spirituality’, ‘African communalism’ and ‘respect for authority and elders’ are all significant mediators of the intention to adopt both e-filing and e-payment. This means that indigenous African culture plays a significant role in explaining Africa’s position in digital government development and adoption. The findings also showed a negative influence of internet access on the intention to adopt digital government services despite the measures that government has put in place. These results make a novel contribution to Information Systems (IS) theory in identifying a critical yet often overlooked indigenous cultural influence on the adoption of digital innovations in low-income countries. The findings also calls for finding new or adapted IS theories that take into account such unique cultural constructs. The thesis recommends that the research is extended to other low-income countries as well as other contexts that exhibit strong indigenous cultural values. / School of Computing / Ph. D. (Information Systems)