Can You Go Passive With Your Debt Fund Investments Too?

Many investors now use index funds for equity. So a fair question follows: can you do the same with debt funds? The answer is yes, but with limits.

Passive debt funds are growing fast in India. But they are not a copy of equity index funds. Their choice is narrow, and the rules for using them are different. This guide explains how they work, where they help and where they fall short. We checked each fact against current sources.

What is a passive debt fund?

A passive fund copies an index. An index is a list of bonds chosen by fixed rules. The fund buys the same bonds. It does not try to beat the index. Passive debt funds come in three main types:

• Target maturity funds: they hold bonds that mature near one fixed date.
• Debt index funds: they track a bond index, such as a gilt or SDL index.
• Debt ETFs: they trade on the stock exchange like a share. They include liquid, gilt and target maturity ETFs.

Many of these funds hold gilts and State Development Loans (SDLs). A gilt is a bond issued by the central government. An SDL is a bond issued by a state government. Some funds track AAA-rated company bonds instead. So always check the index before you invest.

Can passive debt funds replace active debt funds?

Not fully. Experts see the two as partners, not rivals. Here is how they compare:

Feature	Active debt fund	Passive debt fund
Who picks the bonds?	The fund manager	The index rules
Cost	Usually higher	Usually lower
Return certainty	Not fixed	Closer to the starting yield, if you hold target maturity funds to the end
Interest rate risk	The manager can change it	Follows the index, so you must pick the right one
Choice in India	Wide	Narrow, mostly target maturity funds

Experts also disagree. Some say passive works well for gilts and liquid ETFs. Others say active managers can choose from more bonds, especially in corporate bonds. A few distributors feel passive returns look much like fixed deposit returns.

How does a target maturity fund work?

A target maturity fund holds bonds until they mature. It then repays you around the fund’s end date. Yield to maturity (YTM) is the return you would earn if you hold every bond until it matures. The fund shows its YTM on its factsheet.

Worked example: ₹1,00,000 for 3 years

Say you invest ₹1,00,000 in a 3-year target maturity fund. The YTM at purchase is 7% a year. This is an example rate only. If you hold to maturity, your money could grow to about ₹1.22 lakh before costs and tax. The real figure can differ slightly because of tracking error.

Tracking error is the gap between the fund’s return and its index return. A small gap is good.

Now say you sell after one year, and interest rates have risen. The Net Asset Value (NAV), which is the price of one unit, can fall. You may then get back less than you expected. So match the maturity date to your goal date.

What are the risks of passive debt funds?

• Interest rate risk: bond prices fall when interest rates rise. Long-term gilt funds can give poor returns for years.
• No manager to react: a passive fund cannot shorten its bond maturity when rates may rise.
• ETF price gap: an ETF can trade away from its NAV when few people trade it or markets are stressed.
• Narrow choice: most options are target maturity funds. Corporate bond ETFs also face pricing and unit-creation problems.
• Credit risk: it is lower in gilt and SDL funds. It is not zero if the index holds company bonds.

SEBI asks debt funds to show a Potential Risk Class matrix. Credit risk runs from A (lowest) to C (highest). Interest rate risk runs from I (lowest) to III (highest). Check this grade on the factsheet.

How are passive debt funds taxed?

Debt funds that invest more than 65% in debt and money market instruments are taxed at your income tax slab rate. This applies whatever your holding period. There is no indexation. The 65% test applies from 1 April 2025. So passive and active debt funds get the same tax treatment.

For example, take the 3-year case above. The gain is about ₹22,500. At the 30% slab, tax is about ₹6,750 before cess. Your money after tax is about ₹1.16 lakh. Tax rules change often, so please verify the latest rules with the Income Tax Department or a Chartered Accountant.

How do you pick a passive debt fund?

1. Match the dates. Pick a maturity date close to when you need the money.
2. Check the index. See if it holds gilts, SDLs or company bonds.
3. Read the risk grade. Look at the Potential Risk Class matrix.
4. Compare tracking error first. If two funds track equally well, choose the lower cost.
5. Know your plan type. Regular Plans include distributor commission, so their expense ratio is higher than Direct Plans.

Debt fund returns are modest, so cost matters. Even 0.8% extra a year on ₹1,00,000 is about ₹800 a year.

Frequently asked questions

What are passive debt funds?

Passive debt funds follow a bond index instead of relying on a fund manager’s choices. The fund buys the same bonds as the index. The main types are target maturity funds, debt index funds and debt ETFs. They usually cost less than active funds. Their returns depend on the index and on interest rate changes.

Are target maturity funds safe?

No debt fund is risk-free. Target maturity funds often hold government bonds, so credit risk is relatively low. But their NAV moves with interest rates. Return certainty applies only if you hold the fund until maturity. If you sell early after rates rise, you may get back less than you expected.

Can passive debt funds replace all my active debt funds?

Not fully. In India, duration, money market and credit risk funds are available only as active funds. Passive options work best for gilts, SDLs and goals with a fixed date. Many investors use both. The right mix depends on your goal, time horizon and risk comfort.

How are passive debt funds taxed?

Funds that invest more than 65% in debt and money market instruments are taxed at your income tax slab rate. This holds whatever your holding period. There is no indexation. Active and passive debt funds get the same treatment. Please verify the latest rules with the Income Tax Department or a Chartered Accountant.

What is tracking error?

Tracking error is the gap between a fund’s return and its index return. A low tracking error means the fund follows its index closely. For passive funds, it is the main thing to compare. If two funds track equally well, choose the one with the lower expense ratio.

Should I choose a passive debt fund or a bank fixed deposit?

A bank fixed deposit gives a fixed rate. A debt fund’s return is not fixed, and its value can change. Both are taxed at your slab rate. So choose by goal, risk comfort and how soon you need the money. For short goals, a fixed deposit is often enough.

Where can you read more?

Read our home page at deepakwealth.com. For official guidance, visit SEBI, AMFI and the Income Tax Department.

Deepak Gokul holds the CWM® certification, is NISM-Series-XVII: Retirement Adviser Certified, and is an IRDAI Licensed Insurance Advisor. His firm, Deepak Wealth Framework Pvt Ltd, is AMFI Registered as a Mutual Fund Distributor. Deepak has over 19 years of experience helping families in Chennai and across India plan their money.

Mutual Fund investments are subject to market risks, read all scheme related documents carefully.