Chennai's economy is highly diversified and forms a crucial pillar of India's overall GDP. It is consistently ranked among the top Indian cities by economic output, with an estimated metropolitan GDP exceeding $80 billion.
The economy is deeply anchored in manufacturing—particularly automobiles and auto components—as well as software services, hardware manufacturing, healthcare, and financial services. The city is a major exporter of IT services and business process outsourcing (BPO).
While the cost of living is rising, Chennai remains relatively more affordable than Mumbai or New Delhi. The median income has been steadily increasing, supported by the presence of numerous multinational corporations and a robust ecosystem of small and medium-sized enterprises (SMEs). Future economic development is heavily focused on expanding the IT corridors, enhancing port capacity, and developing green energy infrastructure.