Skip to content

NISM-Series-V-A: Mutual Fund Distributors · Concept and Role of a Mutual Fund

Concept and Structure of a Mutual Fund Explained

Updated 11 October 2026 · Fact-checked

A mutual fund is a trust that pools money from many investors, invests it in securities such as shares and bonds through a professional fund manager, and gives each investor units. Returns and costs are shared in proportion to the units held. Solve questions by tracing money, units, NAV and ownership.

Understand Concept and Structure of a Mutual Fund

A mutual fund is a collective investment vehicle. Many investors put money into one pool. A professional team invests that pool in securities such as equity shares, bonds, money market instruments, gold or other permitted assets. You do not own the securities directly. You own a share of the pool.

Your share is measured in units. When you invest, you receive units at the Net Asset Value (NAV) applicable on that day. Every unit of a scheme carries equal rights. If you hold 1% of the units, you have a 1% claim on the scheme's net assets, its income and its gains. Your share of expenses is also proportional.

The pool belongs to the investors, not to the company that manages it. In India, a mutual fund is set up as a trust under the Indian Trusts Act, 1882 and registered with SEBI. The structure has a sponsor who sets up the fund, trustees who hold the property for unit holders and oversee the fund, and an Asset Management Company (AMC) that manages the schemes. A custodian keeps the securities safe and a registrar and transfer agent maintains unit holder records.

The fund does not guarantee returns. Value moves with the market. The investor bears the investment risk. If the securities rise in value, NAV rises. If they fall, NAV falls. Units are the link between the investor and the pool, and NAV is the price of one unit.

Benefits come from pooling: professional management, diversification across many securities even with a small amount, and low minimum investment. These are why small investors use mutual funds.

Key formulas to remember

Units allotted
Units = Amount invested ÷ NAV applicable
Ignore loads and charges unless the question states them. Check whether the amount is net of any charge.
Value of holding
Value = Units held × Current NAV
Your value changes only because NAV changes, unless you buy or sell units.
Investor's share of the scheme
Share % = (Units held ÷ Total units outstanding) × 100
Income, gains and expenses are shared in this proportion.
Net Asset Value per unit
NAV = (Market value of assets − Liabilities) ÷ Units outstanding
Liabilities include accrued expenses. This is the unit price basis.
Structure rule
Sponsor sets up → Trust (trustees) → AMC manages → Custodian and RTA support
The AMC manages the schemes. The trustees hold the trust property for unit holders.

How to solve Concept and Structure of a Mutual Fund questions

Use this method for both concept and numerical questions on how a mutual fund works.

  1. 1Read the question and identify what is asked: a definition, a role in the structure, or a calculation.
  2. 2For a concept question, link it to pooling, units, professional management or proportional ownership.
  3. 3For a role question, match the function to the right party: sponsor sets up, trustees oversee, AMC manages, custodian holds securities, RTA keeps records.
  4. 4For a calculation, write down amount, NAV and units. Use Units = Amount ÷ NAV.
  5. 5For a share question, divide your units by total units outstanding.
  6. 6Check whether the question mentions loads, expenses or a guarantee. Remember returns are never guaranteed.
  7. 7Eliminate options that say the fund owns the investor's money outright, guarantees returns, or gives unequal rights per unit.
  8. 8Recheck the arithmetic and the units in your answer.

Quickest way: Three-word check: Pool, Units, Proportion

When to use it: Use it on any theory question about the basic idea of a mutual fund when time is short.

  1. Pool: does the option say money from many investors is combined?
  2. Units: does it say each investor gets units at NAV?
  3. Proportion: does it say returns and costs are shared per unit held?
  4. Reject any option with guaranteed returns, fixed income promise or ownership by the AMC.
  5. For numbers, do Amount ÷ NAV first, then multiply by a new NAV if needed.

Common mistakes in Concept and Structure of a Mutual Fund

  • Thinking the AMC owns the pooled money

    The AMC manages the money, so it feels like the owner.

    Fix: The trust property is held by trustees for unit holders. The AMC only manages schemes.

  • Believing mutual funds guarantee returns

    Students confuse them with bank deposits.

    Fix: Returns depend on market values. The investor bears the risk. Treat any guarantee option as wrong.

  • Mixing up the roles of sponsor, trustee and AMC

    The terms sound similar and all relate to the fund.

    Fix: Sponsor establishes the fund. Trustees protect unit holders' interests. AMC manages investments. Learn them in that order.

  • Dividing by the wrong number when finding units

    Students multiply amount by NAV instead of dividing.

    Fix: Units = Amount ÷ NAV. Sense-check: a lower NAV gives more units.

  • Thinking a rise in units means a rise in return

    Students confuse units held with value.

    Fix: Units stay the same unless you transact. Return comes from NAV change.

Worked examples

Example 1

Meera invests ₹50,000 in a scheme when the applicable NAV is ₹25. There is no load. Later the NAV is ₹30. What is the value of her holding?

Show the solution
  1. Units = 50,000 ÷ 25 = 2,000 units.
  2. Value = 2,000 × 30 = ₹60,000.
  3. Check: NAV rose from 25 to 30, which is a 20% rise. 50,000 × 1.2 = ₹60,000.

Answer: ₹60,000

Example 2

A scheme has 10,00,000 units outstanding. Rohan holds 25,000 units. The scheme earns an income of ₹8,00,000 that is distributable. What is Rohan's proportionate share of that income?

Show the solution
  1. Share = 25,000 ÷ 10,00,000 = 0.025, or 2.5%.
  2. Rohan's income = 2.5% × ₹8,00,000.
  3. 2.5% of 8,00,000 = ₹20,000.

Answer: ₹20,000

Exam tips

  • Expect plain definition questions: pooling, units, trust structure and no guaranteed return. Know them word for word.
  • Questions often ask which party performs a function. Learn one function per party.
  • In NAV and unit calculations, divide for units and multiply for value. V-A has no negative marking, so always attempt every question.
  • Watch for options that give investors unequal rights per unit. All units of a scheme carry equal rights.

Practice questions from Concept and Role of a Mutual Fund

Concept and Structure of a Mutual Fund in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Concept and Structure of a Mutual Fund: frequently asked questions

What is a mutual fund in simple terms?

It is a pool of money collected from many investors and invested by professionals in securities. Each investor gets units and shares the gains, losses and costs in proportion to units held.

How does a mutual fund work in India?

A sponsor sets up a SEBI-registered trust. An AMC manages the schemes, a custodian holds the securities and a registrar keeps unit records. Investors buy units at NAV and bear the market risk.

Who owns the money in a mutual fund?

The unit holders own the scheme's assets in proportion to their units. The trustees hold the property in trust for them. The AMC does not own it.

Does NISM Series V-A have negative marking?

No. NISM-Series-V-A has 100 questions for 100 marks in 2 hours, with a pass mark of 50% and no negative marking. Attempt every question.