Automating government services is often one of the steps toward achieving e-government. Automating services sometimes requires integrating information from various government entities to improve electronic services' effectiveness, efficiency, and accessibility. With this, government entities can integrate their data through electronic channels without being confined by time or location. In the absence of preventive measures, this could result in privacy violations and data misuse. In contrast, the government of Oman, for example, has started enacting regulations that protect information. They require service providers to embed privacy rules and policies into integrated services' design specifications and architecture to make it a key enabler of data protection. Furthermore, trust is one of the most critical factors determining a person's willingness to take advantage of electronic government services, and protecting personal information can affect trust. Despite its significance, most previous studies have focused on the factors leading to trusting such services from a theoretical perspective without considering the technical aspects. Consequently, more effort is needed in the current debate on the effect of preserving privacy on trust within integrated e-government services. Specifically, this study aims to develop a privacy-preserving framework for integrated e-government services by investigating the challenges of designing an e-government architecture using the optimal business tool and the most efficient service design approach to protect privacy from misuse. A literature review indicates some drawbacks to current privacy frameworks, and most of them preserve privacy abstractly, while privacy tools are missing. To fill those gaps, this study interviewed 14 experts and managers involved in the Oman e-government initiative and familiar with integrating various government entities. The results show a need for some technical, organizational, and situational requirements (instruments) that can be used to design the required framework. Additionally, 420 respondents were asked to participate in this study and were familiar with using e-government services in Oman. Results indicate that several factors related to protecting personal information from misused can influence service trust, including privacy lifecycle protection, privacy controls, impact assessments, and preventive monitoring. Furthermore, the specifications and designs of each of these instruments have been validated using Q-sorting, reliability, and normality, and a conceptual framework has been developed after hypothesizing the correlations between dependent and independent instruments. Several methods are utilized in this study to assess the proposed framework. An experimental evaluation is conducted using validated data to test the conceptual framework as a first method. The results indicate that all instruments in this study perceive privacy as a factor that positively influences service trust. A second evaluation method is to apply the proposed framework to one of the government entities by redesigning one of its key service schemas and testing it with 14 test cases and 73200 test requests to evaluate the impact of the implementation of the proposed framework. Results indicate that implementing the framework will enhance service delivery using less memory, more threads, and fewer request statistics. Lastly, the framework results have been compared with the most related frameworks. This comparison shows that the proposed framework is superior to those currently available. By filling the gaps in the literature, this study contributes theoretically by examining the impact of privacy-preserving instruments on trust within integrated e-government information. It also contributes to regional knowledge since few empirical studies have been conducted on trust factors in Arab countries like Oman. This study extends existing knowledge by highlighting the relationship between privacy-preserving instruments and trust for integrated e-government services. In contrast, this study contributes practically by improving citizens' trust, creating a culture of openness by enabling them to provide accurate information and encouraging them to utilize e-government services. Accordingly, this study emphasizes the need for government entities to use and implement the proposed framework to increase citizen trust and provide better service.