Government of Tamil Nadu Bonds: Structure, Yield, Rating & Key Risks Explained
28 January 2026

Introduction
State government–linked bonds form an important segment of India’s fixed-income market. These instruments allow state governments and their public sector undertakings to raise long-term capital for infrastructure, utilities, and public services. Among these, Government of Tamil Nadu bonds are often issued through state-owned entities operating in sectors such as power, transport, and urban development.
Searches for government of tamil nadu bonds typically indicate interest in understanding how these bonds are structured, how their yields work, and how they differ from central government securities or corporate bonds.
This article provides a purely educational explanation of Government of Tamil Nadu bonds, using the Tamil Nadu Generation and Distribution Corporation Limited (TANGEDCO) bond as a reference example.
What Are Government of Tamil Nadu Bonds
Government of Tamil Nadu bonds generally refer to debt instruments issued by state-owned or state-controlled entities rather than bonds issued directly by the state treasury. These entities are created to deliver essential public services and are owned by the state government.
Such bonds:
Are issued to finance infrastructure and utility projects
Offer periodic interest payments
Have defined or conditional maturity structures
Are usually listed for secondary market trading
They are legally obligations of the issuing entity, even though they may carry state-level association or guarantees.
Issuer Structure: Tamil Nadu Generation and Distribution Corporation Limited
Tamil Nadu Generation and Distribution Corporation Limited (TANGEDCO) is a state-owned electricity utility under the Government of Tamil Nadu. It is responsible for power generation and electricity distribution across the state.
Key issuer characteristics include:
Ownership: Government of Tamil Nadu
Industry: Energy and utilities
Role: Power generation and electricity distribution
Nature: Public sector undertaking
Bonds issued by TANGEDCO are obligations of the corporation itself, though certain series may include credit enhancement mechanisms.
Key Features of Government of Tamil Nadu Bonds
The following features describe the TANGEDCO bond (ISIN INE340M08178):
Issuer: Tamil Nadu Generation and Distribution Corporation Limited
ISIN: INE340M08178
Instrument Type: Non-Convertible Bond
Issue Size: ₹73.1 crore
Date of Issue: 27 March 2017
Maturity Date: 27 March 2027
Face Value: ₹10,00,000 per bond
Coupon Rate: 9.25 percent (fixed)
Interest Payment Frequency: Semi-annual
Tax Treatment: Taxable
Credit Rating: A(CE) by India Ratings
Security: Unsecured
Seniority: Senior
Listing Status: Listed (BSE)
Mode of Issue: Private placement
These attributes define the financial and contractual structure of the bond.
Bond Instrument Structure Explained
The bond is structured as a listed, unsecured, non-convertible bond issued by a state-owned utility. Key structural aspects include:
Unsecured Nature: No specific collateral backing
Senior Status: Priority over subordinated obligations
Fixed Coupon: Interest rate remains unchanged
Non-Convertible: No equity conversion feature
Although state-owned, the bond’s repayment depends on the issuer’s financial position and any credit enhancement mechanisms disclosed in the offer documents.
Coupon Rate, Yield and Cash Flow Mechanics
Coupon Rate
The bond carries a fixed coupon rate of 9.25 percent, calculated on the face value of ₹10,00,000. Interest is paid semi-annually, resulting in two interest payments per year.
Yield Considerations
The coupon rate reflects the contractual interest obligation. Actual yield in the secondary market may vary based on:
Purchase price
Remaining time to maturity
Prevailing interest-rate environment
Yield metrics are market-derived and not guaranteed.
Face Value, ISIN and Listing Details
Face Value
The face value of ₹10,00,000:
Forms the base for interest calculation
Represents the principal repayable as per redemption terms
ISIN
The bond is uniquely identified by ISIN INE340M08178, enabling:
Accurate identification of the instrument
Trading and settlement through recognised systems
Access to disclosures and rating reports
Listing
The bond is listed on BSE, which improves transparency but does not ensure liquidity.
Credit Rating and Credit Enhancement Explained
The bond carries a rating of A(CE) from India Ratings and Research.
A rating: Indicates adequate credit quality
CE (Credit Enhancement): Suggests additional structural support
Credit enhancement does not eliminate credit risk and should be evaluated through detailed disclosures. Ratings are opinions, not guarantees, and may change over time.
Maturity, Perpetual Nature and Embedded Options
Maturity
Scheduled maturity date: 27 March 2027
Perpetual Reference
Some documentation references perpetual characteristics, which may relate to:
Partial redemption features
Embedded call or put options
Embedded Options
Call Option: Available
Put Option: Available
These options allow early redemption under specified conditions, as detailed in the offer document.
Liquidity and Secondary Market Trading
Although listed, liquidity in state-utility bonds can vary depending on:
Issue size
Market participation
Time remaining to maturity
Interest-rate environment
Secondary market prices may fluctuate independently of coupon payments.
Risks Associated With Government of Tamil Nadu Bonds
Key risks include:
Credit Risk: Dependence on issuer’s financial health
Interest Rate Risk: Bond prices may decline if rates rise
Liquidity Risk: Limited trading volumes may affect exit
Structural Risk: Unsecured nature and reliance on issuer cash flows
Regulatory Risk: Changes in power sector policies
State ownership does not remove these risks.
Comparison With Other State Government Bonds
Compared with State Development Loans (SDLs):
PSU bonds typically carry higher credit risk
Yields may be higher
Liquidity may be lower
Compared with corporate bonds:
State-owned issuers may benefit from implicit government association
Legal obligations remain issuer-specific
Common Misconceptions
Common misconceptions include:
All state-owned PSU bonds are fully guaranteed
High coupon rates imply low risk
Listing ensures easy exit
Credit ratings prevent default
Understanding issuer structure helps clarify these assumptions.
Conclusion
Government of Tamil Nadu bonds, particularly those issued by state-owned utilities like TANGEDCO, represent a distinct category within India’s bond market. Their structure, coupon, credit rating, and risk profile differ from both central government securities and private corporate bonds.
A clear understanding of issuer structure, credit enhancement, coupon mechanics, and risks is essential to interpret how these bonds function within the broader fixed-income landscape.
Disclaimer
This blog is intended solely for educational and informational purposes. The bonds and securities mentioned herein are illustrative examples and should not be construed as investment advice or personal recommendations. BondScanner does not provide personalized investment advice through this content.
Readers are advised to independently evaluate investment options and seek professional guidance before making financial decisions. Investments in bonds and other securities are subject to market risks, including the possible loss of principal. Please read all offer documents and risk disclosures carefully before investing.
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