Unlike in other States such as Maharashtra and Karnataka, where economic activity is concentrated in a couple of cities, Tamil Nadu has been witnessing dispersed development.
Besides Chennai, the State has other urban centres — Coimbatore, Madurai, Tiruppur, Tiruchi, Vellore, and Salem — contributing significantly to its economy and helping bridge the urban-rural divide.
The spread of activity can be seen from the location of a host of spinning mills in the western district of Tiruppur.
It accounted for 55% of the country’s knitwear exports to the tune of ₹30,690 crore in 2023-24, providing jobs to six lakh persons.
Calendar- and cracker-making units in the southern district of Virudhunagar, cement production in the central district of Perambalur, and beedi-making and mat-weaving in Tirunelveli are also a testament to this fact.
Tamil Nadu is the most urbanized State in the country, with close to 50% of the population living in urban areas, according to the 2011 Census.
The State not only had the first-mover advantage during the ‘License Raj’ in creating a solid base in manufacturing, but also did not lag behind others in taking to information technology (IT) and IT-enabled services (ITES) in the post-1990 ‘economic reforms’ era.
In the Sustainable Development Goals (SDG) India Index 2023-24 published by the NITI Aayog in 2024, Tamil Nadu emerged as a frontrunner, reflecting the State’s dedicated efforts and comprehensive policies on sustainable development.
The composite score for Tamil Nadu rose to 78 in the edition in question — a remarkable rise from 66 in 2018.
The State ranks second in low infant mortality and low birth rate, and third in the Health Index.
It is known for its innovative welfare schemes such as the noon-meal scheme — twice revived in 1956 and 1982.
The old-age pension scheme was introduced in April 1962 in this state with improvements made over the previous versions.
Within two years of freedom, it set up the Tamil Nadu Industrial Investment Corporation (TIIC) to handle long-term financing.
The TIIC’s presence came in handy during the period of K. Kamaraj, who was Chief Minister of the State from 1954 to 1963.
He enabled the Corporation to participate in the share capital of private enterprises.
The State, in the mid-1980s, opened up higher education to the private sector, facilitating the formation of a number of engineering and medical colleges.
As of now, there are 22 self-financing private medical colleges, four private universities, and 13 colleges affiliated with deemed-to-be universities.
In engineering and architecture, there are 429 self-financing colleges, apart from 11 government colleges.
Accounting for 4% of India’s land area and 6% of the country’s population, Tamil Nadu contributed 9.21% to the national GDP in 2024-25, ranking second only to Maharashtra.
Its Gross State Domestic Product (GSDP) at constant prices (2011-12 series) reached about ₹17.23 lakh crore, reflecting the real economic growth of 11.19% over the previous year.
In fact, the State was the only one to register a double-digit growth rate in the year in question, besides having the growth rate in double digits after a gap of 14 years.
Broadly, the respective shares of the primary (agriculture and allied activities), secondary (industry), and tertiary (services) sectors in the GSDP of the State are 13%, 34%, and 53%.
At the time of Independence, Tamil Nadu’s economy was essentially agrarian.
The Supreme Court judgment of February 2018 on the Cauvery dispute states that prior to 1924.
In 1924, the inter-State agreement was signed between Tamil Nadu, the lower riparian State, and Karnataka, the upper riparian State.
The area under irrigation in the former (Tamilnadu) was about 15 lakh acres, whereas the latter’s coverage (Karnataka) was hardly one-third of that.
The delta region is regarded as the rice bowl of the South.
It accounts for about one-third of paddy cultivation in the State.
It accounts 18 lakh acres out of a total of 52 lakh acres.
Needless to say, paddy has been the primary crop of the farmers in Tamil Nadu.
It was during the immediate post-Independence period that Tamil Nadu found that there were not many irrigation schemes for the drought-prone areas in the western belt — Coimbatore, Tiruppur, and Erode districts.
This led to the birth of the Parambikulam-Aliyar Project (PAP) after an inter-State understanding with Kerala in 1958 over the diversion of west-flowing rivers to irrigate the western region of Tamil Nadu.
C. Subramaniam was a towering figure of the Congress, who hailed from the region.
He played a key role in getting the project off the ground.
He occupied high positions both in the State government — Finance Minister (1952-62) — and at the Centre — Minister for Steel, Food and Agriculture, Planning and Finance (1962-67 and 1971-77).
Now hailed as a symbol of inter-State cooperation, the PAP irrigates about 4.2 lakh acres.
Still, Tamil Nadu is regarded as one of the major States with productivity higher than the all-India average in oilseeds, groundnut, sugarcane, maize, and paddy.
It is according to the Agricultural Statistics at a Glance (2023) published by the Department of Agriculture and Farmers Welfare of the Union government.
Even though the State does not produce cotton in large quantities, it is home to the largest number of spinning mills.
In 1950s Madras was regarded as a benighted agricultural province, with little power, capital and infrastructure.
The provincial administration also lacked enterprise.
It refused to buy up the Madras Tramways which was closing down [in April 1953] for a sum as low as Rs. 19 lakhs.
Today, the Tamil Nadu Small Industries Development Corporation Limited (TANSIDCO) maintains 135 Industrial Estates spread over nearly 8,880 acres.
MSMEs have registered themselves with the Udyam portal of the Union MSME Ministry
As for the strength of MSMEs, there are about 33.6 lakh — around 70% of them being in services.
As an indication of Tamil Nadu’s model of inclusive growth, 30% of MSM entrepreneurs are women.
As of March 31, 2022, Other Backward Classes (OBCs) in the State owned around 3.37 lakh MSMEs, accounting for approximately 40%, and Scheduled Castes (SCs) owned 50,908 units, or about 6%.
Tamil Nadu has become the country’s most industrialized State with the highest number of factories (39,700), employing 2.8 million people.
It is the foremost exporter of electronic goods, accounting for over 30% of India’s electronic exports.
In terms of total exports from the State, the value was around $52 billion in 2024-25.
The country’s first hydrogen-powered train coach was tested in July 2025 in the Integral Coach Factory (ICF) in Chennai.
The Neyveli Lignite Corporation has power units of about 3,400 megawatts (MW) in Neyveli.
The State’s total installed electricity capacity from all sources of energy stood at close to 40 GW in 2024-25.
Of which the conventional sources accounted for 16.7 GW and renewable energy, 23 GW.
Again, a pioneer in tapping wind energy, the State’s installed wind capacity was 9.3 GW, and solar 10 GW.
Tamil Nadu Power Distribution Corporation has about 30.44 million consumers.
Like other States, the service sector plays a pivotal role in driving Tamil Nadu’s Gross State Value Added (GSVA).
In 2024-25, the services accounted for ₹8.13 lakh crore at constant prices (base year: 2011-12), contributing about 53% to Tamil Nadu’s total GSVA.
Placed next to Karnataka, Maharashtra, and Telangana in software exports, the State saw a steady increase in this segment of exports from ₹46,704 crore in 2019-20 to ₹73,969 crore in 2022-23.
It was according to the Tamil Nadu government’s Economic Survey for 2024-25.
The degree of heightened economic activity in the State can be observed from the credit-deposit ratio (CDR) with credit exceeding deposits.
The Survey points out that in 2023-24, Tamil Nadu disbursed credits of ₹15,82,851 crore, whereas it received deposits of ₹13,44,553 crore.
Naturally, it is among the top three States with regard to the CDR.
As regards the road sector, the total length of roads in the State is 74,955 km, including the National Highways’ share of 6,805 km.
It is a tribute to the political, administrative, and social environment of Tamil Nadu that there are about 130 global Fortune 500 companies in the State.
Nearly one-third ($6.8 billion) of the country’s exports in automotive and auto components comes from the State.
The State also produces 25% of the country’s passenger cars and 36% of two-wheelers.
However, the State is facing a number of challenges in all three broad sectors of the economy.
The Economic Survey captures some of these challenges — namely, climate change, demographic shifts, technological disruptions, and changing employment landscapes.
Inter-regional disparity is particularly glaring.
Although the State’s overall per capita income of ₹2.78 lakh (2022-23) is higher than the national average of ₹1.69 lakh, 30 of the 38 districts in the State have a lower per capita income than the State’s average.
Tamil Nadu also needs to concentrate on developing rural entrepreneurship to spread growth across all the districts of the State.
The State’s long coastline was extending for 1,076 km, and the extent of effective inland water resources are over 3.85 lakh ha.
In the dairy sector, there is enormous scope for improvement, as the State is placed 11th at the all-India level in milk production.
Southern districts, which represent 18.8% of the economy and 20.5% of the population in the State, have been lagging behind others.
The Survey points out that “despite having one of the highest Labour Force Participation Rates (LFPR) for women in India, there is still considerable scope to increase this rate.
The gross enrolment rate for women in tertiary education is one of the highest in the country, but the participation of such skilled women is relatively low.