Despite the fact that the National Police Service (NPS) is mandated to protect the lives and properties of the people as stipulated in the Kenyan constitution, it continues to face unprecedented pressure to improve its services to the public. Despite several changes being witnessed in the recent past, including annual recruitment of personnel, increased recruit training duration, acquisition of sophisticated weapons, advancement in technology, and most recently the merger of KPS and APS officers to increase personnel , no significant changes have been witnessed when it comes to efficiency in their service delivery. According to Kenya crime rates and statistics, there has been a sharp increase in crime rates in Kenya for 2020–2021, with an 8.21 percent increase. The general objective of this study was to establish the effect of monetary reward strategies on the delivery of services for the National Police of Nairobi's devolved government. The study adopted a descriptive survey research design. The NPS staff population in Nairobi County is 9530, of which 400 were sampled with a turnout of 338. Primary data was obtained using questionnaires. Descriptive and inferential statistics were conducted. The results of this research were useful not only to the county of Nairobi but also to the government of Kenya and all stakeholders once it was undertaken. For instance, for the county of Nairobi, the research would help meet their strategic plan on sustainable security. For the government of Kenya, the research would be very important in helping it meet its 2030 vision and, hence, provide security to its citizens. The findings were that monetary reward strategies had a significant positive effect on the delivery of services by the NPS in Nairobi County. Therefore, the null hypothesis was rejected (t=3.427, p<0.05). The NPS should prioritize the adoption of financial changes that will improve service performance. There should be focus on the needs and desires of police officers, create individualized efforts, and create positive relationships between senior officers and their subordinates. Officers should have access to higher salaries, savings co-ops, and enhanced allowances, and be inspired by honoring the best-performing officers.