Whalesbook
The Ascendancy of State Debt in India's Sovereign Profile
The Indian sovereign debt landscape is undergoing a significant transformation as state governments aggressively tap market borrowings to bridge widening fiscal deficits. State Government Securities (SGS) outstanding have expanded approximately fivefold since FY15, a pace far outstripping the 2.7-fold growth in central government debt over the same period. This rapid expansion means annual state borrowings are nearing parity with central government issuances, projected to reach around ₹12 lakh crore in FY2026E. This fundamental shift is reshaping demand-supply dynamics within India's bond market, signaling states' growing dependence on market financing. Historically, central government debt dominated sovereign borrowing, but this gap has narrowed substantially over the last decade.
Longer Maturities and Diminishing Liquidity
The surge in SGS issuance is accompanied by a strategic extension of borrowing tenors. The weighted-average maturity of SGS issuances is expected to reach approximately 16 years in FY26, a considerable increase from roughly 11 years in FY20, with over half of current issuances now exceeding 10 years. This strategy is partly driven by a desire to manage refinancing risks and opportunistically lock in lower yields during the current interest rate down-cycle for longer durations. However, this shift, combined with a proliferation of unique debt instruments (ISINs) and fragmented issuance patterns, is contributing to persistent illiquidity and elevated term premiums in the SGS market. Unlike the more liquid Government Securities (G-Secs), SGS volumes remain a fraction of G-Sec volumes, deterring active traders and positioning them as more suitable for buy-and-hold investors or those employing roll-down strategies. Investors face greater challenges in exit liquidity, necessitating meticulous state and tenor selection, alongside demanding adequate yield spreads to compensate for the inherent risks. The aggregate state debt remains sticky at around 28% of GDP, a level above the pre-pandemic figure of 25.3%.
Recommendations for Market Modernization
A report by Vedartha, the AIF & PMS brand under Bandhan AMC, outlines critical policy reforms to address the structural challenges within the State Government Securities market. A primary recommendation is the creation of a single, standardized yield curve for all states, potentially by the Reserve Bank of India (RBI) defining 8-10 benchmark maturities for mandatory issuance. The report also suggests limiting the creation of new ISINs to curb fragmentation and mandating that a significant majority (e.g., 60%) of state borrowing should come from reissuing benchmark securities to consolidate the market over time. To foster pricing transparency and encourage fiscal discipline, mandatory credit ratings for every state are proposed, which could lead to a published state credit spread index. Furthermore, structural consolidation, such as establishing a pooled SGS Consolidation Fund for buybacks and enabling structured switch auctions, is recommended to enhance market efficiency. While State Development Loans (SDLs) previously offered a yield premium over G-secs, this spread has narrowed, with a 10-year SGS and G-sec yield spread observed at 69 basis points in September 2025. The rising volume of state debt issuance is increasingly rivaling sovereign borrowing, potentially impacting the effectiveness of monetary policy transmission and making it harder for the RBI to lower borrowing costs despite rate cuts.
The Bear Case: Structural Weaknesses and Fiscal Strain
The increasing reliance on market borrowings by states, particularly for longer tenors, amplifies concerns regarding fiscal sustainability and market stability. States possess limited sources of tax revenue compared to the central government, making them more susceptible to cutting developmental spending to service higher interest expenses, a dynamic that poses a greater risk than similar trends in central government debt. While central government debt-to-GDP stands at 56.1% for FY2025-26, the inclusion of state debt pushes the general government debt-to-GDP ratio to 85.3%. Some states exhibit significantly higher debt-to-GSDP ratios, with Punjab at 40.35%, Nagaland at 37.15%, and West Bengal at 33.70% as of FY 2022-23, contrasting sharply with Odisha's 8.45%. The use of borrowing for current expenditure, rather than solely capital investment, by several states, as noted in a CAG report, exacerbates fiscal fragility. A notable concern is the potential for states to overtake the federal government in borrowing volumes in the coming years, further pressuring the bond market and potentially distorting the yield curve. Moreover, the regulatory environment remains complex, with historical instances of retroactive tax reassessments impacting specific sectors, and a general lack of transparency among states and related entities complicates risk assessment.
Future Outlook: Navigating Supply Pressures and Policy Interventions
The Indian bond market faces substantial absorption challenges due to an unprecedented fiscal supply. Total sovereign borrowing, encompassing central and state governments, is estimated to reach approximately ₹30.5 trillion in FY27, a significant increase year-on-year. This heavy supply is a primary driver of elevated yields, with the benchmark 10-year yield recently testing the 6.70% mark. Projections anticipate a further steepening of India's yield curve, with the 10-year benchmark expected to trade between 6.60%-6.80% in the coming months. While domestic spreads in certain segments remain attractive, the market must contend with these immense supply pressures and global economic headwinds. Successful management of these dynamics, coupled with the implementation of proposed policy reforms, will be crucial for stabilizing yields and ensuring the efficiency of India's debt market.