This study is sought to establish the impact of cash management practices on financial performance of Sri Lankan Manufacturing companies. The target population of the study was 39 manufacturing companies in manufacturing sector. A sample of 20 manufacturing companies was selected from the population. The selection of sample was made based on the availability of full data set for the period of five years from 2010/11 to 2014/15. The main objective of the study is to examine the impact of cash management on the financial performance of Sri Lankan manufacturing companies. It has consisted four sub objectives based on the proxies of independent and dependent variables. The independent variable of the study was cash management with the proxies of cash ratio and cash turnover ratio. The dependent variable of the study was financial performance with the proxies of Return on Equity (ROE) and Return on Assets (ROA) main hypotheses of the study was “There is an impact of cash management on the financial performance of the Sri Lankan manufacturing companies”. The study used secondary data and the research design used for this study were descriptive statistics such as mean, Standard deviation, Coefficient of variance and Inferential statistics such as correlation and regression analysis by using Statistical Package for Social Science(SPSS) version 23 package.  The findings revealed that Cash Ratio has negative impact with Return on Equity. Same as Cash Ratio negative impact with Return on Assets also. Therefore Cash Ratio is having negative impact on Return On Equity and Return On Assets. However Cash Turnover Ratio was insignificant with Return On Equity and Return On Assets. That mean Cash Turnover Ratio did not have any influence on Return On Equity and Return On Assets of the Sri Lankan Manufacturing companies. Therefore the main hypothesis of the study was partially accepted.

KEYWORDS: Cash Management, Cash Ratio, Cash Turnover Ratio, Financial Performance, Return on Equity, Return on Assets