OPINION I MINT

Tamil Nadu and Kerala are among India’s most socially advanced states, with new governments ready to take charge. These states are faced with a more sophisticated problem than many parts of the world, still grappling with basic developmental deficits. How do they maintain prosperity, create more economic resilience and generate the next generation of opportunity?

The numbers have a powerful story to tell. Tamil Nadu and Kerala are two different but relatively successful development models of the most prosperous part of India, southern India. Southern India accounts for almost 30% of India's household disposable income, while it has about 24% of its households. The region is also home to 28% of India’s middle-class households, making it India’s most vibrant consumption economy.

Tamil Nadu and Kerala are glowing in this southern success story for different reasons. Tamil Nadu has strength in terms of economic size and industrial depth. The state contributes 8.5% of all rich households in India, the highest share in southern India. About 31% of its households are middle class, up from 28% five years ago. The share of rich households has also risen from 2.8 per cent in 2015-16 to 6.2 per cent in 2025-26.

Urbanisation and manufacturing have driven this transformation. Urban households now constitute more than half of the state’s. Tamil Nadu has developed one of India’s widest ecosystems for industry, covering everything from automobiles and electronics to textiles, renewable energy and services. It is also one of the top exporters of automobiles and auto components in India.

But there is a new worry behind this success: the momentum is waning. Tamil Nadu is no longer among the fastest-growing states in terms of affluent household growth despite its industrial base. It has been surpassed by Telangana and Andhra Pradesh in many rich household categories. This suggests that the model of Tamil Nadu, though stable, could be entering a mature phase where marginal gains become harder to get.

Another structural issue is the dependence on Chennai. Almost a third of the wealthiest households of Tamil Nadu are in the capital. Take away Chennai’s contribution, and the state’s economic standing drops dramatically. Cities such as Coimbatore, Hosur, Tirupur, Madurai and Tiruchirappalli have become secondary growth hubs, but the economic gravity of Chennai is overwhelming.

It is not merely a statistical concentration. It puts a premium on migration, investment and infrastructure. At the same time, several rural and semi-urban districts languish as Chennai continues to siphon off disproportionate flows of talent and capital. In fact, nearly 71% of the state’s poor households remain in rural areas.

And that means the challenge for the next government is not just growth but distribution of growth. Tamil Nadu needs to shift from a Chennai-centric model towards a networked economy driven by multiple urban engines.

Kerala’s story is remarkably different. The social base of the state is the strongest in India. Kerala has a middle class of about 47% households, far higher than Tamil Nadu’s 31% and one of the highest in India. The poor households constitute only 6% of the total households, one of the lowest proportions in the country.

Kerala’s achievements in literacy, health care and life expectancy are known throughout the world. Its human development indicators are more comparable to those of middle-income countries than those of Indian states.

But Kerala is also an economic paradox. Socially, Kerala is the most successful state among the big southern states and has the lowest number of rich households, even less than Andhra Pradesh. In a few segments, the growth in high-income households has also been below the national average.

The reason is well known. The prosperity of Kerala is closely related to remittances from overseas workers, especially in the Gulf. That outside income has supported consumption, housing, healthcare and education expenditure for decades. It is precisely because of these flows of remittances that Kerala has one of the highest income shares in southern India relative to its population size.

But this model is beginning to creak. Migration flows are changing. The Gulf economies are localising labour markets, oil-dependent economies are diversifying, and younger Keralites are increasingly looking for opportunities elsewhere. A strategy of development based on foreign income inflows cannot forever take the place of domestic economic dynamism.

The industrial base in Kerala is shallow. Large-scale manufacturing has always been a challenge due to high labour costs, land constraints and regulatory complexity. Tourism and services have partially filled the gap, but they are vulnerable to economic shocks, as the pandemic demonstrated.

Kerala’s model of urbanisation also presents a unique opportunity at the same time. Kerala, in contrast to Tamil Nadu’s metro-centric structure, is characterised by dispersed urbanisation with a chain of interlinked small towns and semi urban clusters. Some 65% of households are urban, but most urban dwellers live in towns of less than a million people.

This opens the prospect of a decentralised growth model based on healthcare, education, digital services, tourism, logistics and knowledge industries rather than heavy manufacturing.”

The next decade in both states will be defined by demographics. Tamil Nadu is industrially robust but ageing. Kerala is socially progressive but economically dependent. Both are faced with declining fertility rates, rising costs of health care and increasing welfare obligations. The challenge is no longer just to reduce poverty, but to sustain productivity in aging societies.

Human capital will therefore be critical. Both states have long invested heavily in education, but future competitiveness will depend less on literacy and more on advanced skills. Investment flows will be increasingly defined by semiconductor manufacturing, artificial intelligence, clean energy, robotics, biotechnology and digital services.

India’s new economic geography will be determined by states that succeed in aligning education systems with these sectors. Also implicit in the trajectories of Tamil Nadu and Kerala is a bigger political lesson. Both states have enjoyed relatively stable governance structures and strong state institutions. These are the states where the benefits of continuity have been shown, rather than the regions where political volatility is a barrier to growth.

But continuity is no longer sufficient. Tamil Nadu has to be wary of complacency. Kerala has to prevent dependency. The next governments of both states inherit working systems. Their real task is harder: to redesign those systems for a world where old-growth engines are failing, and new ones are still emerging.

For Tamil Nadu, the emphasis should be on scaling up innovation beyond Chennai and fast-tracking industrial transformation. For Kerala, it is building domestic engines of wealth creation that are complementary rather than dependent on remittances. Both states have already achieved stability. They will need to generate momentum over the next decade.