The cost-volume-profit analysis (CVP analysis) stage of knowledge is presented in this research, along with its goals, concepts, and applicability to the cost control of Bangladeshi water produc- -ing companies. Determining the connection between cost and profitability is the paper's primary goal. In order to accomplish the primary objective of the study, we tackled concepts like costs, sales, production volume, profit, decision making, and what-if analysis required by management to create many scenarios on production volume, cost, and sales price that result in definitive decisions in the near future. The research approach is limited to an archival study pertaining to a literature evaluation and aligns with the research objective. The water production company served as the research's foundation, and we examined how CVP analysis affected their operations. The primary data for the study was gathered using an online survey and a quantitative methodological approach. The manufacturing company in Bangladesh is the target market. The data came from 90 respondents who were employed by manufacturing companies' finance and accounting divisions. The social science statistical software SPSS (version 21) and the regression method of data analysis were used to analyze the data. Findings: The study demonstrated how crucial cost-volume-profit analysis is to any production company's decision-making process. The findings also demonstrate a strong correlation between total income and managerial decision-making, as well as a positive correlation between unit variable cost and managerial decision-making. These results imply that while making managerial decisions, manufacturing companies should apply their knowledge of cost volume profit analysis. In order to achieve an effective profit, the researchers concluded by recommending that manufactu- -ring companies examine their CVP analysis, which is made up of unit variable cost and total revenue, and do a thorough examination of it before making managerial decisions. Additiona Additionally, they recommended using the findings of a company's cost volume analysis to make sure the business doesn't waste money on production