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Money Market Mutual Funds: Meaning, Features, and How They Work

Last updated: Jul 14, 2026 3 min

Money market mutual funds are SEBI-defined debt funds that invest in short-term fixed-income instruments with maturities of up to one year. These instruments include Treasury Bills, Certificates of Deposit, Commercial Papers, Call Money, and Repo agreements, issued by governments, banks, and high-rated corporates. Returns are generated through interest accrual reflected in the fund’s Net Asset Value (NAV): for example, if a fund portfolio yields around 6–7% annually, the return over a short holding period depends on prevailing rates and the holding duration. These returns are not fixed and vary with market conditions.

Why Money Market Funds Matter

Short maturity reduces interest rate sensitivity
Since these funds invest in instruments with maturities of up to one year, their sensitivity to interest rate changes is relatively lower compared to longer-duration debt funds. This helps maintain relatively stable NAV movements across market conditions.

High credit quality focus
Money market funds predominantly invest in high-rated instruments, typically A1+ rated securities, reflecting strong short-term creditworthiness. The DSP Savings Fund illustrates a portfolio constructed around high-quality money market instruments with a structured maturity profile.

Liquidity for short-term needs
These funds typically offer T+1 redemption, meaning funds are credited within one business day. The short maturity of underlying instruments helps align portfolio liquidity with redemption requirements.

Role in short-term allocation
Money market funds are often used to manage capital over shorter horizons, typically ranging from a few days to several months, depending on liquidity needs and investment objectives.

Portfolio Construction Approaches

Money market funds may follow different portfolio construction strategies:

Roll-down strategy: instruments are held until maturity, allowing portfolio duration to reduce gradually before being reset

Active duration management: portfolio maturity is adjusted periodically based on interest rate expectations

Credit-focused allocation: emphasis on maintaining high credit quality across issuers

These approaches influence yield stability, reinvestment patterns, and overall portfolio behaviour.

How Money Market Mutual Funds Work

Money market funds pool investor capital and allocate it across a diversified set of short-term instruments. Each instrument earns interest, which accrues daily and is reflected in the NAV. As instruments mature, proceeds are reinvested into new securities based on prevailing market rates and the fund’s strategy.

In roll-down structures, instruments are typically held until maturity, reducing the need for frequent rebalancing and providing a relatively predictable accrual pattern. Returns are influenced by interest earned on underlying instruments, changes in short-term interest rates, and portfolio reinvestment decisions.

Money Market Funds vs Liquid Funds vs Fixed Deposits

Feature Money Market Fund Liquid Fund Fixed Deposit
Max maturity Up to 1 year Up to 91 days Fixed tenure
Interest rate sensitivity Low Very low Not applicable
Liquidity T+1 T+1 (instant up to limits) Penalty on early withdrawal
Returns Market-linked Market-linked Fixed
Capital protection No No Insured up to ₹5 lakh

Money market funds extend portfolio maturity up to one year compared to liquid funds, which are limited to 91 days. This longer horizon allows slightly higher accrual potential but with marginally greater interest rate sensitivity.

Risks in Money Market Fund Investing

Credit risk: possibility of default or downgrade in underlying instruments

Interest rate risk: limited but present, especially for instruments at the longer end of the 1-year range
Liquidity risk: generally low but may arise during market stress
Inflation risk: returns may not keep pace with inflation over certain periods

While risk levels are relatively lower within the debt category, they are not eliminated.

Taxation of Money Market Mutual Funds

Money market funds are classified as non-equity funds for taxation purposes.

• Gains are taxed at the investor’s income tax slab rate
• Applicable regardless of holding period
• No indexation benefit under current rules

Taxation is applied at the time of redemption and is subject to regulatory changes.

Common Misconceptions About Money Market Funds

"Money market funds and liquid funds are the same."
They differ in maturity limits. Liquid funds invest in instruments up to 91 days, while money market funds can invest up to one year.

"Money market funds are risk-free."
They carry lower risk but still face credit and interest rate risks, and returns are not guaranteed.

Exploring Money Market Mutual Funds Through DSP

DSP offers mutual fund schemes across short-duration debt categories, including money market funds that focus on investing in high-quality, short-term instruments. You can review scheme details, portfolio strategy, and category definitions on the DSP debt mutual funds page.

To begin investing, visit the DSP Invest portal.

Key Takeaways

  • Money market mutual funds invest in short-term instruments with maturities up to one year
  • They offer relatively stable NAV movement due to lower duration
  • Returns are market-linked and depend on short-term interest rates
  • Suitable for managing short-term liquidity within a portfolio
  • Taxed at the investor’s income tax slab rate under current rules

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Frequently Asked Questions

Are money market mutual funds safe?

They invest in high-quality short-term instruments but still carry credit and market risk.

How are they different from liquid funds?

Money market funds can invest in instruments up to one year, while liquid funds are limited to 91 days.

How are money market funds taxed?

They are taxed at the investor’s income tax slab rate under current rules.

What is the typical investment horizon?

They are generally used for short-term horizons ranging from a few days to several months.

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Disclaimer

DSP Mutual Fund – SEBI Registration No.: 036/97/7

This email/note is for information purposes only. The recipient of this material should consult an investment/tax advisor before making an investment decision. In this material DSP Asset Managers Pvt. Ltd. (the AMC) has used information that is publicly available, including information developed in-house and is believed to be from reliable sources. The AMC nor any person connected does not warrant the completeness or accuracy of the information and disclaims all liabilities, losses and damages arising out of the use of this information. Past performance may or may not be sustained in the future and should not be used as a basis for comparison with other investments. There is no assurance of any returns/capital protection/capital guarantee to the investors in above mentioned scheme.

For complete details on investment objective, investment strategy, asset allocation, scheme specific risk factors and more details, please read the Scheme Information Document, and Key Information Memorandum of the scheme available on ISC of AMC and also available on www.dspim.com.

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