Choosing Debt Mutual Funds For the Long Term

Published: September 15, 2014 at 10:36 am

Last Updated on

If my financial goal is 15-plus years away, PPF is an obvious and pretty good choice for a debt instrument while trying to put together a diversified portfolio.  ‘Which debt mutual fund should I choose for the same purpose, if my goal is less than 15 years away?’, is a question that is asked often enough.

The answer had presented itself to us earlier in an earlier post: Debt Mutual Fund Returns: How to expect when you are expecting!


I was quite astonished to see debt funds with high average maturity (typically medium and long-term gilt funds) had a 10 year CAGR comparable to liquid funds!

So why bother taking on volatility that does not pay? Why not be content with simple accrual type ultra-short term funds? As reader Deep pointed out in response to this graph, “no brainer to go for liquid funds as both credit risk and volatility risk are lowest”.

Let us now look at returns of all debt mutual funds categorized as per Value Research Online. The horizontal axis represents the number of mutual funds in each category and is not shown. Data is take from Value Research.

Last 10 year CAGR


Notice that liquid fund returns of all mutual funds are typically the same. So it does not matter which AMC you choose. What a relief! of course, this is just one data point. If we stare at  rolling returns, there will be some variation (see below).

Clearly funds with low average maturity  (liquid, ultra short-term and short-term) are less volatile across AMCs. Many comfortably best the  Debt-Income (including dynamic bond funds), Gilt-Short-term and Gilt-Medium and Long-term categories.

7 year average CAGR

Here is the average of the rolling 7 year CAGR.


Note:  It is unfair to include funds that hold bonds with maturity period greater than the duration over which we calculate returns. Therefore, when the duration is decreased the long-term funds lose relevance. However, I have included them in the graphs for an overall perspective.

Amusingly, this graph (and the ones to come) look similar to the 10Y return graph! The conclusions do not change!

5 year average CAGR

Average of the rolling 5 year CAGR.


Again, you can buy a liquid fund, liquid-plus fund or ultra short-term fund and relax!

3 year average CAGR

Average of the rolling 3 year CAGR.


Bottom Line

The next time an ‘expert’ says,  ‘match the average maturity of a debt fund with the duration of your financial goal’, Let us ignore them!

Let us now look at rolling returns of two funds: a long-term gilt fund and a liquid fund.

Long-term Gilt fund


Notice the progressive decrease in returns.  The 15 year returns are steady but not spectacular. Considering the volatility and associated emotional stress, I don’t think they are good enough.

Perhaps since the economy is supposedly reviving as we speak, interest rates will fall and the gilts will shine again!

However, 10+ years is more than one market cycle. So  what one gains when rate fall, one could lose when they rise again!  I am no expert, but I am willing to wager that this is the reason long-term gilt funds, if held for a long time, fail to impress.

 Liquid Fund

Liquid funds are not angels either! Their returns can vary quite a bit.


Please do not believe any ‘expert’ who says that liquid funds are better than fixed or recurring deposits. There is no guarantee that post-tax liquid fund returns would beat post-tax FD returns, irrespective of the duration. For ‘short time periods, liquid funds are suitable when the redemption date and amount are uncertain.

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About the Author Pattabiraman editor freefincalM. Pattabiraman(PhD) is the founder, managing editor and primary author of freefincal. He is an associate professor at the Indian Institute of Technology, Madras. since Aug 2006. Connect with him via Twitter or Linkedin Pattabiraman has co-authored two print-books, You can be rich too with goal-based investing (CNBC TV18) and Gamechanger and seven other free e-books on various topics of money management. He is a patron and co-founder of “Fee-only India” an organisation to promote unbiased, commission-free investment advice. He conducts free money management sessions for corporates and associations on the basis of money management. Previous engagements include World Bank, RBI, BHEL, Asian Paints, Cognizant, Madras Atomic Power Station, Honeywell, Tamil Nadu Investors Association. For speaking engagements write to pattu [at] freefincal [dot] com
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