ABSTRACT
The importance of implementing e-Government in an organisation cannot be overestimated as it plays a major role in offering direction, control and purpose towards achieving goals of the organisation within a limited time. This study is designed to assess the implementation of e-Government on the performance of Nigerian Immigration Service Headquarters Abuja. The work adopted a survey method while its theoretical framework is Systems Theory. After which it was discovered that the effects of e-Government on the accountability of Nigerian Immigration Service Headquarters Abuja has enhanced operations of the service as the adoption of e-Government improved service delivery. Although, Cyber-crime and inadequate manpower to manage the service has been the factor militating against the use of e-Government for service delivery in the organisation. The study suggested that Nigerian Immigration Service should upgrade its current e-Government plan by providing the necessary infrastructure that will aid the successful implementation of the policy in the organization, which will help it improve on its digital and internet access among staff and the general public in order to continue achieving their organisational goals which will further enhanced the operations of the service.
Key-words; e-government, accountability, immigration service, performance and efficiency.