Debt Fund

A debt fund is a SEBI-categorised mutual fund scheme whose investable universe consists exclusively of fixed-income and money-market instruments — government securities (G-Secs), state development loans (SDLs), corporate bonds, certificates of deposit (CDs), commercial paper (CP), treasury bills, and repo/reverse-repo positions. Debt funds were formally categorised by SEBI Circular SEBI/HO/IMD/DF3/CIR/P/2017/114 (6 October 2017), which split the earlier catch-all "income fund" universe into 16 distinct sub-categories based on credit quality, Macaulay duration band, or both.

What sits in the portfolio

SEBI 2017 circular mandates that each debt sub-category maintains a defined portfolio characteristic — either a Macaulay duration band (e.g., 3–6 months for ultra-short duration), a credit quality floor (e.g., ≥80% in G-Secs for gilt funds), or both. Common instruments across the broader debt fund universe include:

• Government securities (G-Secs): Central government dated bonds issued by RBI on behalf of the Government of India. Zero credit risk; carry duration risk.
• State Development Loans (SDLs): State government bonds auctioned weekly by RBI; typically 20–30 bps above G-Sec yields of comparable tenor.
• Corporate bonds: Rated instruments from PSU and private issuers; rated AAA to D by SEBI-registered credit rating agencies (CRISIL, ICRA, CARE, India Ratings).
• Certificates of Deposit (CDs): Short-term borrowing instruments issued by scheduled commercial banks and select financial institutions.
• Commercial Paper (CP): Unsecured short-term instruments issued by corporates and NBFCs; typically 30–365 days.
• Treasury Bills (T-Bills): Short-dated government obligations of 91, 182, or 364 days issued at a discount to face value.

AMCs must disclose the investment objective, maturity profile, and credit quality distribution in the Scheme Information Document (SID) and monthly factsheet. Duration positioning within the permitted band is the primary lever of active management.

Risk profile

Debt funds carry three primary risk dimensions, all of which are factual characteristics of fixed-income instruments:

• Duration (interest rate) risk: Bond prices move inversely to yields. A portfolio with Macaulay duration of 5 years will lose approximately 5% in NAV for each 100 bps rise in benchmark yields. Longer-duration funds (gilt, long-duration) are more sensitive to rate cycles than short-duration or liquid funds.
• Credit risk: The possibility that a bond issuer fails to meet scheduled coupon payments backed by issuer creditworthiness, or defaults on principal repayment. Lower-rated paper (AA and below) carries higher credit spreads and higher default probability. Credit events — such as the IL&FS (2018) and Franklin Templeton (2020) episodes — have historically caused sharp NAV drops in higher-yielding debt funds.
• Reinvestment risk: Coupon and maturity proceeds received during a falling-rate environment must be reinvested at lower prevailing yields, compressing realised returns relative to the portfolio's stated yield to maturity (YTM).
• Liquidity risk: Some lower-rated or illiquid bonds (e.g., unlisted NCDs) may not trade in secondary markets at fair value, limiting the fund manager's ability to exit positions without a price concession during stressed conditions.

Taxation (post-Finance Act 2023)

Finance Act 2023 (effective 1 April 2023) materially changed the tax treatment of debt mutual funds under Section 50AA of the Income Tax Act 1961. Key changes:

• All debt fund gains are now short-term capital gains (STCG), regardless of holding period. The earlier 36-month indexation benefit (20% LTCG with indexation) was withdrawn.
• Gains are taxed at the investor's applicable income tax slab rate — identical to fixed deposit interest taxation.
• The change applies to all mutual funds where domestic equity allocation is below 35% at any time, which covers the entire debt fund category.
• Funds purchased before 1 April 2023: Grandfathering provisions apply; check current CBDT guidance or the Finance Act text for transition rules applicable to pre-2023 units.

Source: Finance Act 2023, Section 50AA; Income Tax Act 1961 §2(42A) as amended.

Worked example

An investor in the 30% income tax slab invests ₹10 lakh in HDFC Corporate Bond Fund (AMFI scheme code: 119552) via direct plan, and redeems after 2 years. Illustrative NAV appreciation: ₹10 lakh → ₹11.40 lakh (net gain ₹1.40 lakh). Under post-April-2023 rules, the entire ₹1.40 lakh is treated as STCG and taxed at 30% slab rate (plus applicable surcharge and cess), yielding a post-tax gain of approximately ₹97,000 — identical to the treatment of FD interest. Note: actual returns depend on the fund's prevailing portfolio yield, duration positioning, and credit events; the above is a schematic illustration only, not a return projection.

See also

• Liquid Fund
• Gilt Fund
• Credit Risk Fund
• Total Expense Ratio (TER)
• Debt Funds in India — Complete Guide

Primary source

SEBI Circular SEBI/HO/IMD/DF3/CIR/P/2017/114 (6 October 2017) — Categorisation and Rationalisation of Mutual Fund Schemes: sebi.gov.in. Finance Act 2023, Section 50AA — Taxation of market-linked debentures and debt mutual funds: incometax.gov.in. AMFI scheme directory: amfiindia.com.

Past performance is not indicative of future returns. Mutual fund investments are subject to market risks. Read all scheme-related documents carefully. ARN-314872. APMI APRN-01658. Content is informational and not investment advice.