When the Reserve Bank of India cut the repo rate by 50 basis points in 2025, reducing it to 5.50%, investors who had positioned themselves in gilt funds were among the biggest beneficiaries. Bond prices rose, NAVs climbed, and gilt funds quietly delivered strong returns while equity markets remained volatile.

Yet many retail investors in India still think of gilt funds as niche or complicated instruments. They are neither.

A gilt fund is a type of debt mutual fund that invests primarily in government securities, commonly called G-Secs, issued by the Central Government or state governments. These securities carry near zero credit risk because the Government of India backs them. The word "gilt" traces back to British financial history, when government bonds were printed on certificates with gold-coloured edges, giving them the name gilded edge or gilt securities.

In India today, gilt funds are regulated by SEBI and must invest a minimum of 80% of their assets in government securities. They are open-ended debt schemes, which means you can invest or redeem at any time without a fixed lock-in.

This article explains what gilt funds are, the two SEBI-defined types, the key benefits, the risks every investor must understand, how taxation works, and who should consider these funds as part of their portfolio.

How Does a Gilt Fund Work?

The process is straightforward once you understand the chain of events.

When the Central or State Government needs funds to finance its expenditure, it borrows from the market through the Reserve Bank of India. The RBI conducts auctions and issues Government Securities to participants, which include banks, insurance companies, primary dealers, and mutual funds.

Gilt fund managers subscribe to these securities on behalf of investors. The fund earns regular interest (also called coupon income) on these bonds, which accrues daily into the fund's NAV. When the securities mature, the fund receives the principal back and reinvests it into new government securities.

The crucial mechanism every investor must understand is the relationship between interest rates and bond prices. When interest rates fall, existing bonds that carry higher coupon rates become more valuable in the market, pushing their prices and the fund's NAV upward. When interest rates rise, the opposite happens. This inverse relationship between rates and bond prices is at the core of how gilt fund returns are generated beyond just the interest income.

The Two SEBI-Defined Types of Gilt Funds

SEBI officially classifies gilt funds into two distinct categories under its mutual fund categorisation framework.

Fund Type	Mandate	Duration Profile	Interest Rate Sensitivity
Gilt Fund	Minimum 80% in G-Secs across any maturity	Flexible; fund manager decides	Moderate to high depending on portfolio duration
Gilt Fund with 10-Year Constant Maturity	Minimum 80% in G-Secs; must maintain Macaulay duration of 10 years	Fixed at ~10 years	Very high

Gilt Fund (Flexible Duration) This category allows the fund manager to invest across short, medium, and long-term government securities. The manager can adjust the portfolio's maturity profile based on the interest rate outlook. When rates are expected to fall, the manager may tilt toward longer-duration bonds to capture greater price gains.

Gilt Fund with 10-Year Constant Maturity This category is stricter. The fund must maintain a Macaulay duration of approximately 10 years at all times. Because of this fixed long duration, these funds are significantly more sensitive to interest rate movements. They tend to deliver higher returns when rates fall sharply but can also fall more than other debt funds when rates rise. They are best suited for investors with a longer horizon and a clear view on the interest rate cycle.

Key Benefits of Gilt Funds

Zero Credit Risk Gilt funds invest only in government securities. The Government of India cannot realistically default on its domestic borrowings because it has the sovereign authority to manage its finances. This makes gilt funds one of the safest debt instruments from a credit risk standpoint, unlike corporate bond funds where an issuer can downgrade or default.

Higher Returns in Rate Cut Cycles During periods when the RBI reduces rates, gilt funds that hold longer-duration bonds tend to deliver strong returns. Historically, when the RBI cut rates sharply between 2019 and 2020, long-term gilt funds delivered annualised returns in the range of 11% to 13%. In the ongoing rate cut cycle that began in February 2025, gilt funds have again attracted renewed investor interest.

Portfolio Diversification Gilt funds behave differently from equity and even corporate bond funds. During equity market stress, bond yields often soften, which benefits gilt fund investors. Including gilt funds in a portfolio adds a layer of stability and reduces overall portfolio volatility.

Transparency Because the fund invests only in government securities that are publicly listed and regulated, the portfolio is highly transparent. There are no surprises from low-rated corporate exposure or undisclosed credit bets.

No Lock-in Period Most gilt funds do not have a mandatory lock-in period. Investors can redeem their units on any business day at the prevailing NAV.

Risks You Must Understand Before Investing

Interest Rate Risk This is the dominant risk in gilt funds and should not be overlooked. If the RBI raises rates, the NAV of a gilt fund can fall significantly, especially in funds with long duration. A gilt fund with a 10-year constant maturity can see its NAV drop more sharply than a corporate bond fund with a shorter duration profile during a rising rate environment.

Duration Risk Longer the duration of the fund, greater the sensitivity to rate changes. This means higher potential returns when rates fall, but also steeper losses when rates rise. Investors who do not match their investment horizon to the fund's duration could end up selling at the wrong time and booking a loss.

Returns Are Not Guaranteed Gilt funds are market-linked instruments. The NAV fluctuates daily. A fund that delivered excellent returns during a rate cut cycle may underperform or even give negative returns during a rate hike phase.

Not Ideal for Very Short Horizons If you need your money within a few months, a liquid fund or overnight fund is a better fit. Gilt funds are designed for a 3 to 5 year or longer horizon to allow the interest rate cycle to play out in your favour.

Investment decisions should be based on individual financial goals, risk appetite, and thorough research.

How Gilt Funds Are Taxed in India

This is where many investors are caught off-guard. Following the Finance Act 2023 and the Finance (No. 2) Act 2024, the tax treatment for gilt funds changed materially.

Gilt funds are classified as "Specified Mutual Funds" under Section 50AA of the Income Tax Act because they invest more than 65% of their assets in debt and money market instruments.

Investment Date	Tax Treatment
Units purchased on or after 1 April 2023	All capital gains taxed at your income tax slab rate, regardless of holding period
Units purchased before 1 April 2023, sold on or after 23 July 2024	Long-term gains (held over 24 months) taxed at 12.5% without indexation
IDCW (dividend) payouts	Added to total income and taxed at slab rate; 10% TDS if payouts exceed Rs 5,000 per AMC per year

The key implication is that for new investments made after 1 April 2023, there is no LTCG benefit, no indexation, and no distinction between short-term and long-term holding periods. All gains are added to your income and taxed at your applicable slab rate, which makes gilt funds relatively less tax-efficient for investors in higher income brackets compared to equity-oriented funds. Budget 2025 and Budget 2026 made no changes to these rules.

Let's Understand This With an Example

Suresh, a government employee in Nagpur, has Rs 5,00,000 in savings that he does not need for the next 4 years. He is risk-averse and wants to avoid equity but feels fixed deposits no longer suit him because rates have been falling.

In March 2025, he invests Rs 5,00,000 in a fictional fund called "Bharat Gilt Fund" when the 10-year government bond yield was around 6.80%.

Over the next two years, the RBI cuts rates by a cumulative 75 basis points. The 10-year yield falls to around 6.00%. Bond prices in the fund's portfolio rise in response. Assume the fund delivers an annualised return of 8.5% over this period.

His corpus after 2 years: approximately Rs 5,88,000, a gain of Rs 88,000.

This gain is added to his total income and taxed at his applicable slab rate (say 20%), which means a tax of approximately Rs 17,600. His post-tax gain is around Rs 70,400, or roughly 14% absolute return over 2 years.

Compared to a bank fixed deposit at 6.5%, where he would have earned Rs 67,600 before tax and paid the same slab rate on interest income annually, the gilt fund delivered a similar or better post-tax outcome while also offering daily liquidity.

Gilt Fund vs Corporate Bond Fund: A Quick Comparison

Parameter	Gilt Fund	Corporate Bond Fund
Underlying assets	Government securities only	High-rated corporate bonds
Credit risk	Near zero (sovereign backing)	Low to moderate
Interest rate risk	High (especially long duration)	Moderate
Returns in rate cut cycles	Tend to be higher	Moderate
Suitable horizon	3 to 5 years or more	2 to 4 years
Transparency	Very high	High

Key Takeaways

Gilt funds are SEBI-regulated open-ended debt mutual funds that invest at least 80% of their assets in government securities issued by the Central or State Government.
SEBI defines two types: flexible gilt funds where the fund manager controls duration, and gilt funds with 10-year constant maturity which are more rate-sensitive.
The main benefit is near-zero credit risk, combined with the potential for strong capital gains in a falling interest rate environment.
Interest rate risk is the primary risk: when the RBI raises rates, gilt fund NAVs can fall significantly, particularly for long-duration funds.
For units purchased on or after 1 April 2023, all capital gains are taxed at your income tax slab rate regardless of how long you hold, with no indexation benefit.
Gilt funds are best suited for conservative investors with an investment horizon of 3 to 5 years or more who want to benefit from the RBI's rate cut cycle.

Conclusion

Gilt funds occupy a unique position in the Indian mutual fund landscape: they eliminate credit risk entirely by investing only in government-backed securities, while still offering the possibility of meaningful returns during interest rate cut cycles.

However, they are not a set-and-forget investment. Interest rate risk is real and can lead to short-term losses if market conditions move against you. The tax changes since April 2023 have also made them similar to fixed deposits in terms of tax treatment, which means investors in higher brackets need to factor that into their calculations.

If you have a 3 to 5 year horizon, a conservative risk appetite, and want exposure to India's government bond market without picking individual securities, gilt funds deserve consideration as part of your debt allocation.

The MO Investor App from Motilal Oswal lets you explore and invest in gilt funds and a wide range of debt instruments based on your financial goals and risk profile.

Frequently Asked Questions (FAQs)

What is a gilt fund in simple terms?

A gilt fund is a debt mutual fund that invests at least 80% of its assets in government securities, offering near zero credit risk because the government backs all underlying bonds.

What are the two types of gilt funds in India as per SEBI?

SEBI classifies gilt funds into standard gilt funds with flexible duration across all maturities, and gilt funds with 10-year constant maturity that must maintain a Macaulay duration of approximately 10 years.

Are gilt funds completely safe?

Gilt funds carry virtually no credit risk since they invest in government bonds, but they are subject to interest rate risk, meaning NAVs can fall when the RBI raises rates.

How are gilt fund gains taxed in India for new investments?

For units purchased on or after 1 April 2023, all capital gains are taxed at your income tax slab rate regardless of the holding period, as gilt funds fall under Section 50AA of the Income Tax Act.

When is the best time to invest in gilt funds?

Gilt funds tend to deliver their best returns during periods when the RBI is actively cutting interest rates, as falling rates push up the prices of existing government bonds in the portfolio.

What is the difference between a gilt fund and a liquid fund?

Liquid funds invest in short-duration instruments maturing within 91 days and are designed for parking cash for a few weeks, while gilt funds invest in longer-duration government securities and suit a 3 to 5 year horizon.

Can gilt fund NAV fall and give negative returns?

Yes, gilt fund NAV can fall and deliver negative returns over certain periods, particularly when the RBI raises interest rates sharply, even though the underlying government bonds carry no default risk.

What is the ideal investment horizon for a gilt fund?

Gilt funds are best suited for investors with a horizon of at least 3 to 5 years, which allows enough time for the interest rate cycle to benefit the portfolio and recover from short-term NAV fluctuations.

Do gilt funds have a lock-in period?

Most gilt funds are open-ended schemes with no mandatory lock-in period, and investors can redeem their units on any business day at the current NAV.

How is a gilt fund different from a corporate bond fund?

Gilt funds invest only in sovereign government securities and carry near zero credit risk, while corporate bond funds invest in bonds issued by companies, carrying moderate credit risk but potentially offering higher yields.

/content/mofsl-website-adobe/fragments/pf-disclaimer