The Kenyan government has realized the importance of procurement planning in all public procurement, with all procurement activities being within the approved budgets of the procuring entity, through an annual procurement plan, and all procurements undertaken by an entity to be within the threshold set in the regulations. Procurement should also be handled by different offices in respect to initiation of procurement, processing and receipt of goods and services. There have been numerous attempts to reform and regulate Public Procurement, and this has seen the emergence of legislation such as the Public Procurement and Disposal Act of 2005, which was later revised in 2009 to set up the necessary procedures for acquisition as well as the disposal of unserviceable, obsolete and surplus equipment by government institutions. Study findings concluded that IFMIS had a significant relationship with public procurement performance, a significant relationship was also established between IFMIS control systems and public procurement performance, further it was also confirmed that online tendering had a significant relationship with public procurement performance, a conclusion was also reached that automated planning had a significant relationship with public procurement performance, and lastly it was found out that automated supplier engagement had a significant relationship with public procurement performance. The study concluded that IFMIS has influence on public procurement performance in Kiambu county government. Changing either IFMIS control systems, online tendering, automated planning and automated supplier engagement would significantly affect public procurement performance. This study recommends that county governments should put policies flexible enough to handle technological changes. Policies to strengthen the IFMIS platform should be put in place to ensure the systems control mechanisms are safeguarded.