How much debt is too much for Tamil Nadu?

The debt-GSDP ratio compares a state’s outstanding public debt with the size of its economy. It shows how large the debt burden is relative to the income-generating capacity represented by GSDP. A lower or stable ratio generally suggests that economic growth is keeping pace with debt growth, but it does not capture every fiscal risk.

Tamil Nadu’s ratio was 21% in 2018-2019, rose to about 29% in 2021-2022, and declined to 27% in 2024-2025. It is estimated at 26.7% in the 2025-2026 revised estimates. In that year, nominal GSDP grew 13%, while outstanding debt grew 11.5%.

The 26.7% figure matters because it shows improvement after the pandemic shock. Yet pressure remains: 43% of debt matures within seven years, and interest payments absorb a fifth of revenue. A stable ratio can therefore coexist with shrinking fiscal flexibility.

Debt maturity shows when the government must repay borrowed money. If a large share comes due soon, the state may need to refinance it or find resources for repayment. Interest payments are another recurring burden because they use revenue that could otherwise support public services or investment.

Tamil Nadu has about 43% of its public debt maturing within seven years. Interest payments accounted for 21% of revenue receipts in 2024-2025 and are estimated to take up a fifth of revenue in 2026-2027. The state also used 28% of public-debt receipts for repayment.

These figures make the debt profile more demanding than the headline ratio suggests. Even with debt at 26.7% of GSDP, near-term repayments and interest costs can limit new spending. They also increase refinancing risk, especially if borrowing costs rise or revenue growth weakens.

A debt-GSDP ratio measures debt relative to the economy, not the government’s immediate cash pressures. The ratio can remain stable when economic growth matches debt growth, while repayments, interest costs and routine spending still consume available funds. Fiscal space means the room left for new priorities after existing obligations are met.

Tamil Nadu’s debt-GSDP ratio was 27% in 2024-2025, below the indicative ceiling of 29%, and debt stabilization has been positive since 2021-2022. Yet 43% of public debt matures within seven years. Interest payments took 21% of revenue receipts, while 34% of public-debt receipts funded revenue expenditure.

This combination can squeeze development spending without immediately worsening the ratio. A smaller share of borrowing is creating new assets, and more supports revenue costs or repayment. Future management therefore depends on growth, interest costs, primary deficits and the productivity of borrowing.

Comparing debt-GSDP ratios places Tamil Nadu’s position among other major states. Tamil Nadu’s estimated 26.7% ratio is substantial, but it is below the levels reported for several states. Such comparisons show relative scale, though they do not by themselves reveal differences in interest costs, maturities or borrowing quality.

The article lists Punjab at 45.2%, Rajasthan at 38%, West Bengal at 37.52%, Bihar at 37.1%, Andhra Pradesh at 36%, Kerala at 34.26% and Telangana at 28.3%. Madhya Pradesh stands at 32.2%, while Uttar Pradesh is at 27.6%.

Tamil Nadu is therefore below many highly indebted states and slightly below Uttar Pradesh, but above Odisha, Gujarat and Maharashtra, whose ratios are below 20%. Its relative position does not remove its own refinancing pressures. The use and productivity of borrowing remain central to judging sustainability.

The Domar condition is a debt-sustainability test. It examines nominal economic growth, the interest rate on government debt and the primary deficit, which is spending minus income before interest payments. Debt becomes harder to control when interest costs and the primary deficit are high relative to economic growth.

For Tamil Nadu’s 2025-2026 revised estimates, the primary-deficit-GSDP ratio is 1.5%, nominal growth is 14.4%, and the interest-to-debt ratio is 7.2%. Using these values, the article calculates an implied sustainable debt-GSDP ratio of 23%. The article’s estimated debt ratio is 26.7%.

The 23% result is above the 20% norm recommended by the fiscal responsibility and budget management review committee, but it still signals a need for caution. The article says annual borrowing should remain below 3% of GSDP as a guideline, not a rigid rule. Growth and fiscal control remain decisive.

Accounting labels do not always show whether borrowing benefits the economy. Revenue expenditure usually covers ongoing costs, while capital expenditure is linked to creating assets. But productive capacity also depends on skills, health, technology, maintenance and effective public institutions. These benefits may appear in revenue accounts.

The article gives several examples. Salaries for teachers and public-health personnel, preventive healthcare, learning support and timely irrigation maintenance can improve people’s capabilities and keep systems working. By contrast, a poorly chosen capital project, an unfinished building or a facility few people use may create little economic value.

This is why the article favours distinguishing productive from non-productive borrowing. Tamil Nadu’s borrowing should be judged by whether it improves infrastructure, skills, health, technology or public institutions. That approach gives policymakers a better guide than simply checking whether expenditure is classified as capital.

Governments borrow to finance development and build the foundations for future growth. Productive borrowing can improve infrastructure, people’s skills and health, technology and public institutions. If these investments raise capacity and economic activity, growth can help the government manage its debt over time.

Tamil Nadu’s borrowing pattern shows the risk of a different outcome. In 2015-2016, 53% of borrowed funds went to capital expenditure and 34% to revenue expenditure. More recently, 62% of borrowed resources have gone to revenue expenditure and debt repayment, leaving only 32% for capital creation.

This shift means borrowing is less directly funding new assets. It can leave the state with continuing interest and repayment obligations but fewer growth-enhancing investments. The forward priority is productive borrowing, while controlling the primary deficit, refinancing needs and the share of revenue used for interest payments.