Working capital is nerve system of the company. Working capital management is important for firm’s profitability. The objective of financial management i.e. to maximize the wealth of the shareholders cannot be attained if the operations of the firm are not optimized, thus every firm must have adequate working capital. We will hardly find a business firm which does not require any amount of working capital, indeed firms differ in their requirements of working capital. The present paper examines the working capital performance of NMDC (National Minerals Development Corporation) limited during the period of 2012 to 2016. Financial ratios are applied to measure the working capital performance of the company.