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Jun 27, 2026  |  10 min read  |  By Simplegence

What Is a Debt Mutual Fund — Types, Returns, and Taxation

Gajanand Sharma
Gajanand SharmaFounder & CEO, Simplegence · LinkedIn ↗Published 26 June 2026

Lower Risk, Lower Return — But Still Not Risk-Free

Debt mutual funds are the lower-risk counterpart to equity funds. They invest in bonds, government securities, and money market instruments — earning interest income plus some price appreciation when interest rates move favourably.

Two events fundamentally changed how Indian investors should think about debt funds: the Franklin Templeton winding-up in April 2020 (which showed debt funds are NOT risk-free) and the 2023 Finance Act (which removed the LTCG tax benefit).

This guide covers all 16 SEBI debt fund sub-categories, duration vs credit risk, post-2023 tax changes, the Franklin Templeton lesson, and how to choose debt funds for emergency parking, short-term goals, and capital preservation.

What Is a Debt Mutual Fund?

A debt mutual fund invests in fixed-income securities issued by governments, corporates, banks, and other institutions:

Returns come from two sources: interest income (coupons paid by the bonds) and capital gains (price changes when interest rates move).

SEBI's 16 Debt Fund Sub-Categories — Organised by Duration

Sub-CategoryMacaulay DurationTypical Use
Overnight Fund1 business daySweep accounts, ultra-safe parking
Liquid FundUp to 91 daysEmergency fund, idle cash
Ultra Short Duration3-6 monthsShort-term parking
Low Duration6-12 months3-12 month goals
Short Duration1-3 years1-3 year goals
Medium Duration3-4 years3-4 year goals
Medium to Long Duration4-7 years4-7 year goals
Long Duration7+ yearsLong-term debt allocation
Money Market FundUp to 1 year (MM only)Money market exposure
Corporate Bond FundMin 80% AAA corporatesQuality corporate exposure
Credit Risk FundLower-rated bondsHigher yield, higher risk
Banking & PSU FundMin 80% bank/PSUQuality + duration
Gilt FundMin 80% G-secs (any duration)Zero credit risk
Gilt Fund - 10-Year Constant DurationMaintains 10-yearPure duration bet
Floater FundMin 65% floating rateRising-rate environment
Dynamic Bond FundActive duration managementManager judgment-driven

Duration Risk vs Credit Risk — The Two Big Risks

Duration Risk

The longer a debt fund's duration, the more its NAV moves when interest rates change. Rough rule: a 1% rise in interest rates causes a ~1% NAV drop for every 1 year of duration. A 7-year duration fund could lose ~7% if rates rise 1%; gain ~7% if rates fall 1%.

Credit Risk

The risk that a borrower defaults on interest or principal. AAA-rated bonds (HDFC, Reliance, top PSUs) have very low default risk. AA and below have meaningful risk. BB and below are junk. Credit Risk Funds and high-yield Ultra Short Duration funds can hold low-rated paper to chase higher yield — but face concentrated default risk.

The Franklin Templeton 2020 Lesson:

Franklin's 6 wound-up schemes had heavy exposure to low-rated corporate bonds (Vodafone Idea, Yes Bank perpetual bonds, distressed credits). When COVID hit and redemptions spiked, they couldn't sell the illiquid paper to honour withdrawals. Investors got most of their money back over 2020-22 through staggered repayments — but the experience showed clearly that debt funds with credit risk can freeze entirely in crises. Today, prefer AAA-only corporate bond funds and G-sec/gilt funds for safety-first allocation.

The 2023 Finance Act — Tax Treatment Changed Forever

Effective 1 April 2023, debt mutual funds lost their LTCG tax benefit. The change applies to investments made on or after that date.

Tax Treatment by Investment Date and Redemption Date

Two legislative events — the 2023 Finance Act and Budget 2024 — created three distinct treatment paths depending on when you invested and when you redeem:

Implications

The change eliminates the structural tax advantage debt funds had over fixed deposits for long-term investors. For most investors, the choice between debt funds and FDs now depends on:

For short-term parking (under 1 year), liquid funds remain the standard choice due to higher yield and intraday liquidity. For 3+ year horizons, the math is now closer to neutral vs FDs.

How to Choose Debt Funds — Use Case by Use Case

Use CaseRecommended Category
Emergency fund (3-6 months expenses)Liquid Fund
Goal in 0-3 monthsOvernight or Liquid Fund
Goal in 3-12 monthsUltra Short or Low Duration
Goal in 1-3 yearsShort Duration Fund
Goal in 3-7 years (conservative)Corporate Bond / Banking & PSU
Zero credit risk for any horizonGilt Fund
Tactical bet on falling ratesLong Duration / 10-Yr Gilt
Higher yield (with risk)Credit Risk Fund — caution
Default Choice for Most Investors:

Liquid Fund for emergency fund + short-term parking. Short Duration or Corporate Bond Fund for 2-4 year goals. Gilt Fund for 5+ year debt allocation if you want zero credit risk. This three-fund debt setup handles 95% of retail investor needs without complexity.

Common Debt Fund Mistakes

Next Step — Exit Load in Mutual Funds

Exit load is the small fee charged when you redeem early. Learn how it works, the typical thresholds, and how to avoid it.

Read: What Is Exit Load →

Frequently Asked Questions

A debt mutual fund invests in fixed-income securities — government bonds, corporate bonds, treasury bills, certificates of deposit, commercial paper, and money market instruments. Returns come from interest income and changes in bond prices. Debt funds offer lower returns than equity funds (typically 5-9% vs 11-15%) but with much lower volatility. SEBI classifies them into 16 sub-categories based on duration, credit quality, and strategy.
Post the 2023 Finance Act (effective 1 April 2023), debt mutual funds (Specified Mutual Funds — ≤35% in equity, per Section 50AA) are taxed at slab rate regardless of holding period — eliminating the previous LTCG benefit (which was 20% with indexation after 3 years). Investments made before April 1, 2023 have layered treatment: redemptions before July 23, 2024 follow the old rules (20% with indexation after 3 years); redemptions on/after July 23, 2024 follow Budget 2024's simplified rule — 12.5% without indexation after 24 months. Investments made on/after April 1, 2023: always slab rate.
In order of safety: (1) Overnight Fund — securities maturing in 1 business day, virtually zero risk; (2) Liquid Fund — up to 91-day securities, very low risk; (3) Gilt Fund — only government securities, no credit risk but interest rate risk exists. All three avoid corporate credit risk. For emergency funds and short-term parking, Liquid Funds are the standard choice. For longer parking with zero credit risk, Gilt Funds work but carry mark-to-market risk if rates rise.
Duration is a measure of a debt portfolio's sensitivity to interest rate changes. SEBI uses Macaulay Duration to categorise debt funds: Overnight (1 day), Liquid (up to 91 days), Ultra Short (3-6 months), Low Duration (6-12 months), Short Duration (1-3 years), Medium Duration (3-4 years), Medium-Long (4-7 years), Long Duration (7+ years). Longer duration funds gain more when rates fall and lose more when rates rise. For short-term needs, stick to short-duration funds to avoid rate-cycle losses.
In April 2020, Franklin Templeton wound up 6 of its debt schemes citing market illiquidity. The schemes (Ultra Short Bond, Low Duration, Short Term Income, Credit Risk, Dynamic Accrual, Income Opportunities) had heavy exposure to high-yield/low-rated corporate bonds. When COVID hit, redemption requests couldn't be met without forced sales at distressed prices. Investors eventually got most of their money back through staggered repayments over 2020-22, but it was a multi-year ordeal. The lesson: credit risk funds and ultra-short with junky portfolios are not 'safe debt' — they can freeze in crises.
It depends on your tax slab and horizon. Pre-2023, debt funds had a clear tax advantage (LTCG at 20% with indexation after 3 years) that beat FDs in higher tax slabs. Post-April-2023, debt funds are taxed at slab rate just like FDs — eliminating the structural tax edge. For short-term parking (under 1 year), liquid funds still offer slightly higher returns and intraday liquidity (vs FD premature withdrawal penalties). For 3+ year horizons, the choice between debt funds and FDs now depends mostly on whether you want slightly higher returns + slight risk (debt funds) or guaranteed sovereign-backed returns (FDs).

📖 New to finance terms? Our glossary covers 150+ Indian finance terms — plain English, no jargon.

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