Abstract: The general objective of this study was to analyze the effect of financial planning practices on the financial performance of non-profit making health organizations in Kiambu County, Kenya. The specific objectives of the study were: to assess the effect of budgeting practices on financial performance of non-profit making health organizations in Kiambu county, to evaluate the effect of cash planning on financial performance of non-profit making health organizations in Kiambu county, to analyze the effect of inventory planning on financial performance of non-profit making health organizations in Kiambu county and to assess the effect of working capital management on financial performance of non-profit making health organizations in Kiambu county. This study adopted a descriptive survey design.