Tata Steel Ltd (Tata Steel) is a diversified steel producer with integrated operations in mining, steelmaking, and downstream processing. It has downstream manufacturing facilities for wires, tubes, bearings, agricultural equipment, pig iron, ductile iron pipes, and various industrial by-products. Tata Steel serves industries such as automotive, construction, packaging, and heavy equipment, providing products such as flat and long steel, wires, tubes, bearings, and agricultural equipment. Tata Steel's business portfolio includes mining operations with collieries in Jharia and West Bokaro, and iron ore mines in Noamundi, Katamati, Joda East, Khondbond, Vijaya II, and Koida in India. Internationally, it operates iron ore assets in Labrador and Northern Quebec, Canada. Tata Steel Nederland manufactures flat steel products, while Tata Steel UK is transitioning to an electric arc furnace-based production method. Tata Steel Thailand operates three manufacturing facilities, specializing in bars, rebars, wire rods, and small sections. The company serves customer segments, including auto & ancillaries, retail, construction, and infrastructure. The company classifies its operations into seven reportable operational segments: Tata Steel India, Neelachal Ispat Nigam Limited, Other Indian Operations, Tata Steel Europe, Other Trade Related Operations, South-East Asian Operations, and Rest of the world. As of March 2025, the company operated with a steelmaking capacity of 35 million tonnes per annum (MTPA) across India, the Netherlands, the UK, and Thailand. Tata Steel operates major manufacturing facilities in Jamshedpur and Gamharia in Jharkhand, and Kalinganagar and Meramandali in Odisha, with an overall capacity of 26.6 MTPA. Tata Steel operates 76 plants and 143 offices in India, and 39 plants and 20 offices outside India. The company has a downstream presence in the US, France, Germany, and other countries. It has 58 steel processing centres.

Tata Steel has undertaken various R&D initiatives focused on technology and innovation to enhance long-term competitiveness. The company has invested over INR16,000 million in R&D over the past five years, leading to significant advances in product innovation and operational excellence. Its key initiatives include the development of advanced such as CP780 steel and X65H line pipe steel for hydrogen transport, supporting clean energy and infrastructure sectors. The company is also committed to sustainability, with projects including the green hydrogen initiative and a two-step alternative technology for ferro manganese production that reduces CO2 emissions. Tata Steel has collaborated with institutions and involved in projects to support greener steel production and innovative product development. The R&D unit of Tata Steel is responsible for ongoing enhancement in products and processes, collaborating with external partners, and focusing on strategic technology roadmaps. Tata Steel has multiple R&D centers and has been granted over 270 patents. The company has developed more than 180 new products and has major technology alliances with institutions such as Imperial College London, the Henry Royce Institute UK, and IIT-ISM Dhanbad. In FY2025, the company spent INR9160.6 million on R&D, which as a percentage of revenue stood at 0.3%.