Corporate Social Responsibility (CSR) is increasingly recognized as a vital element of business
operations, especially in the manufacturing sector. In Nigeria, with its challenges of poverty,
illiteracy, poor infrastructure, and environmental degradation, there is an urgent need for
businesses to contribute to addressing societal issues. This study evaluates how CSR is
strategically integrated into business operations, with a focus on environmental and social
considerations. An ex post facto research design were employed, data was gathered from the
audited annual financial reports of five consumer goods manufacturing firms listed on the
Nigerian Exchange Group, covering the period from 2020 to 2024. A purposive sampling
technique was employed to select firms with readily accessible financial reports. Descriptive
and inferential statistics were used to analyze the data, with panel regression analysis
assessing the impact of external and internal environmental costs on return on assets (ROA),
and Pearson Product Moment Correlation (PPMC) evaluating the relationship between these
environmental costs and equity. The findings revealed a significant relationship between
environmental costs and profitability, with external environmental costs negatively impacting
profitability, while internal environmental costs had a positive correlation. it was concluded
that CSR disclosure positively and negatively correlated to the profitability of manufacturing
firms in Nigeria. It recommends that firms adopt strategies to mitigate external environmental
costs, such as improving operational efficiencies or passing costs onto consumers, to enhance
profitability