How Mutual Funds Make Money

Key Takeaways

• A mutual fund scheme generates returns from three sources: a rise in the price of its holdings, interest from bonds and dividend from shares.
• The returns from all three sources show up in the scheme’s Net Asset Value (NAV), which is published once every business day.
• The scheme’s running costs, called the expense ratio, are adjusted within the NAV. you are not billed for them separately.
• Equity, debt, hybrid and index funds depend on different sources of return, so their risk and return pattern differs.
• Mutual fund returns are not guaranteed. They move with market conditions.

Mutual funds are widely used by investors who want to participate in the financial markets without selecting and managing individual securities. But how does a mutual fund actually generate returns?

Before choosing a scheme, it helps to know where its returns come from, because this shapes how the scheme behaves and the risks you take on as an investor. This guide explains how a mutual fund scheme generates returns, how these returns are reflected in its Net Asset Value (NAV), and which factors can affect them.

What is a Mutual Fund?

A mutual fund pools money from investors and invests it in a portfolio of securities which may include shares, government securities, corporate bonds and other permitted assets. Professional fund managers run the portfolio, and the scheme operates under SEBI regulation. In return for your money, you receive units of the scheme. The value of one unit is its Net Asset Value (NAV), which is calculated at the end of every business day.

How Does a Mutual Fund Make Money?

A mutual fund generates returns based on the performance and income of the securities held in its portfolio. The exact sources depend on the scheme's investment objective and asset allocation. There are three main sources of returns.

Capital Appreciation

Capital appreciation means the price of an investment rises over time. An equity mutual fund, for instance, holds shares of different companies. When the prices of those shares go up, the value of the fund’s portfolio rises too, and this can push the NAV up.

Debt funds can benefit in a similar way. When interest rates fall, the prices of existing bonds generally rise, which can increase the value of a debt fund’s holdings.

When the price of an investment rises above what the scheme paid for it, the scheme has a gain on paper. If the fund manager sells it at that higher price, the gain is actually earned. Either way, the gain is already included in the NAV, because the NAV changes whenever the market value of the scheme’s investments changes. Selling does not add an extra return.

Example: suppose an equity mutual fund buys shares worth ₹10 lakh across different companies. If the market value of these shares rises to ₹12 lakh, the ₹2 lakh increase is the capital appreciation, before expenses.

The reverse is true as well. If the market value of the holdings fall, the value of the portfolio and NAV falls too.

Interest Income

Interest income is the main source of returns for debt mutual funds. These funds invest in fixed income instruments such as:

• Government securities
• Corporate bonds
• Treasury bills
• Certificate of deposits
• Commercial papers

Debt instruments can generate returns in two ways. Government securities and corporate bonds pay interest, either at a fixed rate or at a rate that changes over time, depending on their terms. Treasury bills are bought at a price lower than the amount repaid on maturity, and the difference is the return. Commercial papers and certificates of deposit can work either way, depending on how they are issued.

Both the interest earned and this price difference add to the scheme’s returns. The actual return also depends on changes in the market price of these instruments and on the scheme’s expenses.

Example: Suppose a debt mutual fund invests ₹5 lakh in a bond that pays 7% interest a year. That works out to about ₹35,000 a year, as long as the fund holds the bond and the interest is paid as promised. This interest becomes part of the scheme’s assets. The scheme’s actual return will also depend on its expenses and on changes in bond prices.

Interest income does not make debt fund returns guaranteed. Bond prices generally fall when interest rates rise, and the company or government that issued the bond may delay or miss payments. Both can affect the value of the bonds the scheme holds, and with it the NAV.

Dividend Income

Equity mutual funds invest in shares of companies listed on stock exchanges. Some of these companies share a portion of their profits with shareholders as dividends. When a company in the scheme's portfolio pays a dividend, the scheme receives its share, which becomes part of the scheme's assets and contributes to its performance.

However, not every company pays dividends, and companies are not obligated to declare them regularly. The amount and frequency can vary. For most equity funds, dividends are therefore one possible source of income, and generally a smaller part of the return than price movement.

While equity funds primarily benefit from capital appreciation and dividends, debt funds generate returns through interest income and changes in bond prices. Hybrid and index funds have their own return patterns depending on their underlying investments. Let us look at how different types of mutual funds generate returns.

How do different types of mutual funds generate returns?

Not all mutual funds generate returns in the same way. The assets a fund holds and its investment strategy determine the possible sources of its returns. Here is a simple breakdown:

Each type has a different risk and return pattern. The actual returns depend on the securities held, market conditions, the fund's strategy and its expenses.

Although different types of mutual funds generate returns through different sources, these returns are reflected in the scheme's NAV. Let us understand how NAV captures the changes in a mutual fund's value.

How Does NAV Reflect Mutual Fund Returns?

NAV represents the per unit value of a mutual fund scheme. It is calculated by dividing the scheme’s net assets by the total number of outstanding units. In other terms:

NAV = (Total Assets-Total Liabilities) ÷ Total Outstanding Units

The scheme’s assets include its investments, cash and any income it has earned but not yet received. Its liabilities include expenses and other amounts it has to pay. Subtracting the liabilities from the assets gives the scheme’s net assets. Dividing the net assets by the total number of units gives the NAV per unit.

Example: Suppose a mutual fund scheme has net assets worth ₹100 crore and 10 crore outstanding units. Its NAV would be 100 ÷ 10 = ₹10 per unit.

Now, assume the value of the net asset increases to ₹110 crore, while the number of units outstanding remains the same. Then the NAV would be 110 ÷ 10 = ₹11 per unit.

This means the NAV has increased from ₹10 to ₹11, a 10% rise in the scheme's per-unit value. This is a simplified illustration that assumes no change in outstanding units and does not account for any other portfolio movements or factors. In the same way, the NAV can fall if the value of the net assets falls.

Now that we have seen how NAV reflects returns, let us look at the factors that can raise or lower them.

What factors affect mutual fund returns?

Although mutual fund schemes may generate returns through different sources, their performance is influenced by several market and fund-related factors. Understanding these factors can help investors develop realistic expectations.

1. Market performance

Market movements can raise or lower a scheme's NAV. Equity funds are influenced by stock market movements, company performance and economic conditions, while debt funds are affected by interest rates, bond prices and the financial health of issuers.

2. Interest rate movements

When interest rates rise, the prices of existing bonds generally fall, and when rates decline, their prices may rise. The effect is usually larger for bonds with a longer time left before repayment.

3. Credit quality of investments

If a bond issuer's ability to pay weakens, the market value of its bonds may fall, and payments may sometimes be delayed or missed. Such a fall can reduce a debt scheme's returns.

4. Expenses

Every scheme has a running cost, called the Total Expense Ratio (TER), expressed as an annual percentage of the assets it manages. The cost is not charged as one lump sum. It builds up every day and is reflected in the daily NAV, so investors are not billed separately. If two schemes earn the same income and gains, the one with higher costs shows a smaller rise in NAV.

From 1 April 2026, the expense disclosure framework has been revised. The Total Expense Ratio (TER) comprises the Base Expense Ratio (BER), brokerage costs, transaction costs and applicable statutory levies, including GST. The BER represents the base expenses charged for operating and managing the scheme. Investors should refer to the latest TER disclosures published by the mutual fund  The TER also differs between Regular and Direct plans of the same scheme. We have explained this in our guide on Regular vs Direct plans and trail commission.

Mutual fund returns are not guaranteed, and a scheme's past performance does not indicate how it will perform in the future.

What should you check before investing?

Before choosing a scheme, it helps to look at a few things:

• The scheme's objective and the asset classes it invests in
• The Riskometer, which SEBI requires every mutual fund scheme to display, indicates the scheme's risk level on a six-level scale ranging from Low to Very High.
• The expense ratio and the plan type (Regular or Direct)
• The scheme's portfolio and how long it has been running
• Your own goal, time horizon and comfort with ups and downs

The scheme's offer documents and factsheet carry all of this information.

Conclusion

A mutual fund scheme generates returns from three sources: a rise in the price of its holdings, interest from bonds and dividends from shares. These come together in the scheme’s NAV, which is calculated at the end of every business day, after the scheme’s running costs are deducted. How much each source contributes depends on the type of fund, and the actual outcome is shaped by market movements, interest rates, the credit quality of the bonds held and expenses.

Understanding these sources helps you read a scheme’s NAV and compare funds with realistic expectations. Returns are not guaranteed, so it is worth checking a scheme’s objective, riskometer and expense ratio, and reading its offer documents before you invest.

FAQ

1. How do mutual funds generate returns?

A mutual fund generates returns through a rise in the price of its holdings, interest from bonds and dividends from shares. These are reflected in the scheme's NAV after expenses.

2. Are mutual fund returns guaranteed?

No. Mutual fund returns depend on market conditions and on what the scheme invests in. Equity funds are exposed to ups and downs in the stock market. Debt funds can be affected by changes in interest rates and by bond issuers who delay or miss payments. Hybrid funds carry the risks of both the shares and the bonds they hold. No mutual fund scheme guarantees returns.

3. Why can the NAV fall even when a fund earns interest or dividends?

The NAV reflects the total market value of the portfolio. If the prices of the holdings fall by more than the income the scheme earns, the NAV can go down.

4. Is the expense ratio charged separately?

No. The expense ratio is adjusted in the NAV daily, so the NAV you see is already net of expenses.

5. How does an investor earn from a mutual fund?

An investor’s gain is linked to the change in NAV between buying and selling units. If the scheme pays out money under the IDCW option, that payout is not an extra return on top of the scheme’s performance. It comes from the scheme’s assets, so the NAV generally falls by the amount paid, subject to applicable adjustments. For taxes on these gains, you can refer to our guide on mutual fund taxation.