9 Feb 2026
Overnight Funds are a category of debt mutual funds that invest in securities with a maturity of one business day. Defined under the Securities and Exchange Board of India (SEBI)’s mutual fund classification framework these schemes are designed to offer investors a relatively low risk avenue for short term cash management, subject to market risks. They aim to provide liquidity and stability by investing primarily in high quality instruments such as tri-party repos (TREPs), government securities, or other money market instruments maturing the next day. While Overnight Funds are among the least volatile debt options investors should note that returns are market linked and not guaranteed.
Key Takeaways
- Overnight Funds invest in debt and money market instruments with a one day maturity
- They are designed for short term cash management and temporary parking of funds
- Typically, lower Interest rate and credit risks subject to market condition making them one of the most stable debt fund options
- These funds provide high liquidity allowing redemption on the next business day
- No exit load is applicable as per SEBI regulations
- Returns are market linked and not guaranteed
- Taxation follows the provisions applicable to debt mutual funds
- Suitable for corporates, HNIs and retail investors seeking short term liquidity management
What is an Overnight Fund?
An Overnight Fund is a category of open ended debt mutual fund that invests in overnight securities having a maturity of one day as defined by the Securities and Exchange Board of India (SEBI) under its mutual fund scheme categorization framework.
These funds typically invest in tri-party repos (TREPs), government securities and other money market instruments that mature on the following business day.
Since the portfolio resets every day, interest rate risk may be negligible and credit risk is minimal as most instruments are backed by high quality collateral or sovereign securities. However, given their short duration and low risk nature returns from Overnight Funds are generally stable but limited:
- Overnight Funds are suited for investors or institutions looking to invest surplus funds for very short periods while maintaining easy liquidity and low risk exposure
- They can be considered for temporary parking of idle cash, short term treasury management or as part of a liquid emergency corpus
- It is important to note that Overnight Funds do not guarantee returns and their performance is subject to market conditions and underlying portfolio quality
How Does an Overnight Fund Work?
Overnight Funds invest in debt and money market instruments that have a maturity period of just one day. At the end of each business day the securities in the portfolio mature and the fund manager reinvests the proceeds into new overnight instruments for the next day.
This daily renewal process ensures that:
- Interest rate risk remains minimal as the portfolio does not hold long duration securities
- Credit risk is limited since the underlying investments are generally made in high-quality, short-term instruments such as tri-party repos (TREPs) or securities backed by collateral
- Due to this structure Overnight Funds are relatively less sensitive to interest rate movements due to 1-day maturity from market volatility and are considered one of the stable categories within debt mutual funds, subject to market risks.
- However, like all market linked products they do not provide guaranteed returns and investors should review the Scheme Information Document (SID) before investing
Key Features of Overnight Funds
- Investment Horizon - Suitable for investors who wish to invest their money for a very short duration generally ranging from one day to a few days
- Maturity Period - The underlying instruments in the portfolio have a maturity of one business day
- Liquidity - Offers high liquidity making it suitable for short term cash management or temporary parking of surplus funds
- Credit Risk - Low as investments are made primarily in high-quality, short-term instruments such as tri-party repos (TREPs) and government backed securities
- Interest Rate Risk - Minimal as the securities in the portfolio mature within one day thereby reducing the impact of interest rate fluctuations on the fund’s value
- Returns - Aims to generate relatively low volatility returns aligned with short term market rates
- Taxation - Treated as a debt mutual fund for taxation purposes
Benefits of Investing in Overnight Funds
1. Low Risk Exposure - As the underlying securities mature within one day these funds have minimal exposure to interest rate volatility and limited credit risk
2. Efficient Cash Management - Overnight Funds can serve as an effective option for parking short term surplus funds allowing investors to utilize idle cash efficiently while retaining easy liquidity
3. No Exit Load - In accordance with SEBI guidelines Overnight Funds do not charge an exit load making them suitable for very short investment durations
4. Regulated and Transparent - Overnight Funds are regulated by SEBI and are required to disclose their portfolio and Net Asset Value (NAV) daily ensuring a high level of transparency and investor confidence
Risks Associated with Overnight Funds
While Overnight Funds are considered among the lowest risk categories within debt mutual funds investors should be aware of certain factors that may influence their investment experience:
Reinvestment Risk - Since the fund's investments mature and are reinvested daily, returns may fluctuate slightly based on prevailing short term market rates
Lower Return Potential - These funds are designed to provide stability and liquidity not high returns. Hence the return potential is limited compared to other longer duration debt funds
Who Should Invest in Overnight Funds?
Overnight Funds are suitable for investors seeking a low risk and highly liquid investment option for very short durations. They may be considered by
- Individuals or institutions wishing to temporarily park surplus cash for a few days
- Investors looking for a safe and convenient avenue to hold funds before deploying them into other investments
- Risk averse investors who prioritise capital preservation and liquidity over return potential
These funds can be effectively used by corporates, high net worth individuals (HNIs) and retail investors for short term liquidity management or cash flow planning
It is important to note that Overnight Funds do not provide guaranteed returns and investors should read the Scheme Information Document (SID) and consult their financial advisor before making investment decisions. Funds like the Kotak Overnight Fund are suitable for such needs, providing stability and flexibility without compromising liquidity.
Taxation on Overnight Funds
- Mutual fund taxation is subject to the latest provisions under applicable income tax laws.
- For the most accurate and updated information please refer to the latest Kotak Mutual Fund Tax Reckoner
Conclusion
Overnight Funds offer investors a low risk, highly liquid option for managing short term surplus money. Their one day maturity structure may help minimize both interest rate and credit risks while ensuring daily liquidity and transparency. These funds are particularly suitable for investors who value capital preservation and quick accessibility over high return potential.
While they are among one of the type of debt mutual funds, investors should remember that returns are not guaranteed and performance may vary with short term market conditions. As with all mutual fund investments it is advisable to read the Scheme Information Document (SID) carefully and consult a qualified financial advisor before investing.
FAQs
1. What is the maturity period of securities in an Overnight Fund?
Overnight Funds invest in debt and money market instruments that mature in one business day ensuring minimal interest rate and credit risk.
2. Are Overnight Funds safe?
Overnight funds are generally considered to be among the relatively lower risk categories within debt mutual funds as they invest in securities with a maturity of one day just one day However like all market linked investments, they are not completely risk free.
3. Can I withdraw my money anytime?
Redemption is typically processed as per applicable settlement timelines subject to cut off time, holidays and scheme specific provisions. Please refer to the SID/KIM for details.
4. Do Overnight Funds guarantee returns?
No, they do not offer guaranteed returns, but the fluctuations are minimal due to the daily maturity nature.
5. Who should invest in Overnight Funds?
Investors seeking a safe and liquid short term parking option for their surplus funds.
Disclaimers
Kotak Overnight Fund


Investors may consult their Financial Advisors and/or Tax advisors before making any investment decision.
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MUTUAL FUND INVESTMENTS ARE SUBJECT TO MARKET RISKS, READ ALL SCHEME RELATED DOCUMENTS CAREFULLY.