Gilt mutual fund

A gilt mutual fund in India is an open-ended debt scheme that invests a minimum of 80% of its total assets in government securities (G-Secs) across maturities, under SEBI’s October 2017 scheme categorisation circular. The term “gilt” is borrowed from the British market, where government bonds were historically printed on gilt-edged paper. In India, gilt funds hold predominantly Central Government Securities (CG-Secs) and, to a lesser extent, State Development Loans (SDLs). Gilt funds carry zero credit risk (sovereign backing) but carry high interest rate risk due to the long average maturity of government securities portfolios.

Regulatory definition

SEBI circular SEBI/HO/IMD/DF3/CIR/P/2017/114 defined gilt funds as:

• Scheme type: Open-ended debt scheme investing in government securities.
• Minimum allocation: At least 80% of total assets in government securities across maturities.
• Duration constraint: No specified minimum or maximum duration (unlike gilt 10-year constant duration funds).
• Benchmark: Typically CRISIL Gilt Index, NIFTY All Duration G-Sec Index, or I-Sec Li-BEX.

The absence of a duration constraint gives gilt fund managers the flexibility to manage the portfolio’s duration actively based on their interest rate outlook.

Government securities universe

Eligible instruments for gilt funds include:

• Central Government Securities (CG-Secs): Fixed-rate bonds (the primary instrument), floating-rate bonds, capital-indexed bonds, and savings bonds issued by the Government of India through RBI auctions.
• State Development Loans (SDLs): Bonds issued by state governments, carrying a small yield premium over CG-Secs but also sovereign-backed.
• Treasury Bills (T-Bills): 91-day, 182-day, and 364-day T-Bills of the Central Government.
• Sovereign Cash Management Bills: Short-duration cash management instruments.

CG-Secs are the primary holding of most gilt funds. The Indian G-Sec market is one of the deepest in Asia, with outstanding stock exceeding ₹100 lakh crore, providing ample liquidity for gilt fund portfolio management.

Interest rate sensitivity (duration)

Gilt funds are the most interest-rate-sensitive category within the open-ended debt fund universe because:

1. Long average maturity: Government securities in India range from 91-day T-Bills to 40-year bonds. Gilt fund portfolios often have average maturities of 10 to 25 years, reflecting the long-duration portion of the G-Sec yield curve.
2. Duration risk: A gilt fund with a modified duration of 10 years will experience approximately 10% NAV decline for every 1% rise in interest rates, and approximately 10% NAV gain for every 1% fall in rates.
3. No credit risk offset: Corporate bond funds can partially hedge interest rate risk through credit spreads (credit risk premium tends to be counter-cyclical to duration risk). Gilt funds have no credit risk, so their NAV is purely driven by rate movements.

RBI monetary policy and gilt fund performance

Gilt fund returns are directly driven by the Reserve Bank of India’s (RBI) monetary policy decisions:

• Rate cut cycles: When RBI reduces the repo rate, G-Sec yields fall, G-Sec prices rise, and gilt fund NAVs increase. Gilt funds perform best during rate-easing cycles.
• Rate hike cycles: When RBI increases the repo rate, G-Sec yields rise, G-Sec prices fall, and gilt fund NAVs decline. Long-duration gilt funds can experience -5% to -15% annual returns during aggressive rate-hike cycles.
• Rate pause / sideways rates: Gilt funds earn the portfolio yield (coupon) but generate minimal or negative capital gains.

Historical gilt fund return patterns reflect this strongly: during RBI’s rate-cutting cycles (2014-2016, 2019-2020, 2020-2022), long-duration gilt funds generated 12% to 18% annualised returns. During rate-hike cycles (2022-2023), the same funds lost 2% to 8%.

Tactical versus strategic use

Strategic allocation: Investors who believe they can predict the direction of long-term interest rates allocate to gilt funds tactically ahead of anticipated rate cuts. This requires a view on monetary policy direction.

Strategic long-term allocation: Some investors use gilt funds for very long-term wealth creation, accepting the volatility in exchange for the near-zero credit risk and the long-run government bond return.

Liability matching: Insurance companies, pension funds, and provident funds use long-duration gilt funds to match their long-dated liabilities, accepting duration risk as a necessary feature rather than a risk.

Taxation

Gilt funds are debt-oriented funds and are taxed under the Finance Act 2023 framework.

For units purchased on or after 1 April 2023:

All gains are taxed at the investor’s slab rate regardless of holding period (STCG at slab).

For units purchased before 1 April 2023:

• Less than 3 years: STCG at slab rate.
• 3 years or more: LTCG at 20% with indexation.

Securities Transaction Tax does not apply to debt fund transactions. See capital gains tax in India and ITR-2 for reporting.

The abolition of the LTCG-with-indexation benefit for debt funds (Finance Act 2023) significantly reduced the post-tax attractiveness of gilt funds for long-term investors in higher tax brackets, who previously benefited from indexation reducing the effective tax rate on long-duration positions.

Comparison with adjacent categories

Gilt versus gilt 10-year constant duration fund

A gilt 10-year constant duration fund must maintain a Macaulay duration of 10 years at all times, rebalancing to restore duration after yield movements. A standard gilt fund has no duration target; managers may shorten or lengthen duration based on outlook.

Gilt versus corporate bond fund

A corporate bond fund holds at least 80% in AA+ or above-rated corporate bonds, which carry credit risk but yield a spread above government securities. Corporate bond funds have shorter average durations and lower interest rate sensitivity than gilt funds.

Gilt versus dynamic bond fund

A dynamic bond fund can invest in any mix of government and corporate securities with any duration, actively managed based on rate outlook. In practice, many dynamic bond funds are run similarly to actively managed gilt funds when rates are expected to fall.

Gilt versus banking and PSU debt fund

Banking and PSU debt funds invest primarily in debt of banks and public sector companies rather than government securities, carrying credit risk but shorter duration. Gilt funds are purely government-backed with longer duration.

Exemplar schemes

Established gilt funds include:

• HDFC Gilt Fund (HDFC Mutual Fund)
• SBI Magnum Gilt Fund (SBI Mutual Fund)
• Nippon India Gilt Securities Fund (Nippon India Mutual Fund)
• ICICI Prudential Gilt Fund (ICICI Prudential Mutual Fund)
• Kotak Gilt Fund (Kotak Mahindra Mutual Fund)
• Aditya Birla Sun Life Government Securities Fund (Aditya Birla Sun Life Mutual Fund)
• DSP Government Securities Fund (DSP Mutual Fund)

These are cited for reference only.

Suitability

Gilt funds are suitable for:

• Sophisticated investors with a strong view on the direction of interest rates who want to tactically benefit from rate cuts.
• Long-term investors (5+ years) who accept high interim volatility for zero credit risk.
• Institutional investors (insurance, pension) managing long-duration liabilities.

Gilt funds are not suitable for:

• Conservative investors who cannot tolerate large NAV swings.
• Investors without a clear interest rate view.
• Investors seeking stable, predictable returns.

Regulatory oversight

Gilt funds are regulated by SEBI under the SEBI (Mutual Funds) Regulations, 1996. The mutual fund industry in India framework governs operations. RBI’s G-Sec market framework governs the underlying instruments.

References

1. SEBI Circular SEBI/HO/IMD/DF3/CIR/P/2017/114, “Categorisation and Rationalisation of Mutual Fund Schemes”, 6 October 2017.
2. Finance Act 2023, Section 50AA.
3. RBI, Master Direction on Government Securities Transactions, updated 2023.
4. SEBI (Mutual Funds) Regulations, 1996, as amended.