Highlights

  • Understand how mutual fund units represent proportional ownership in a scheme’s portfolio and how to purchase them
  • Learn the NAV formula and how it determines your unit allocation on every investment
  • Discover how fractional units ensure complete utilisation of every rupee in SIP investments

Introduction

India’s mutual fund industry manages ₹73.73 lakh crore in assets as of March 31st, 2026. Behind this number lie billions of mutual fund units owned by investors like you. Yet many investors buy units without understanding what they actually own or how their investment amount translates into units.

Units are the building blocks of your mutual fund investment. Knowing how they work helps you verify allocations, plan redemptions, and make informed decisions about fund selection.

What are Mutual Fund Units?

Mutual fund units are ownership shares in a mutual fund scheme. According to SEBI, each unit represents a proportional stake in the fund’s underlying securities portfolio. When you invest ₹10,000 in a fund, you’re buying units at the prevailing Net Asset Value, not stocks directly.

Think of units like shares in a company, except here you own a piece of the entire portfolio the fund manages.

How are Units Calculated?

Your unit allocation follows a simple formula:

Number of Units = Investment Amount ÷ NAV on Allotment Date

Example calculation:

  • You invest: ₹10,000
  • NAV on allotment date: ₹50
  • Units allocated: ₹10,000 ÷ ₹50 = 200 units

Understanding NAV and Unit Value

The Net Asset Value (NAV) of a mutual fund scheme represents the price per unit at which investors buy or redeem units of the scheme. Since the market value of the underlying assets changes daily, the NAV is updated and disclosed by the fund every day. Tracking the NAV over time helps investors assess the scheme’s performance across different periods and understand how its value has evolved.

Net Asset Value (NAV) determines your unit price. The formula is:

NAV = (Total Assets – Total Liabilities) / Total Outstanding Units

Updated daily for open-ended schemes, NAV reflects the fund’s per-unit market value after accounting for all holdings and expenses.

Fractional Units in SIP Investments

Indian mutual funds allow fractional units up to four decimal places, ensuring every rupee works for you in Systematic Investment Plans.

Consider this SIP scenario:

  • Monthly SIP: ₹5,000
  • NAV on investment date: ₹52.30
  • Units allocated: ₹5,000 ÷ ₹52.30 = 95.6052 units

Without fractional units, you’d receive only 95 whole units, leaving ₹31.65 unutilised. The four-decimal precision means zero wastage; your entire ₹5,000 is invested.

Over years of SIP investing, these fractional units accumulate significantly, maximising your wealth creation.

How to Purchase Mutual Fund Units

Complete KYC First

Before investing, you must complete KYC (Know Your Customer) as required by SEBI.
This involves submitting:

  • PAN card
  • Address proof
  • Identity verification (online video KYC or in-person verification)

Choose How You Want to Invest

You can buy mutual fund units through:

a) AMC Website (Direct Plans)
Visit the mutual fund company’s official website and invest directly. This usually has lower expense ratios.

b) Online Investment Platforms / Apps
Platforms like Share.Market allow easy investing and tracking.

Select the Scheme

Choose based on:

  • Investment goal
  • Risk level
  • Time horizon
  • Fund category (equity, debt, hybrid, etc.)

Decide Investment Mode

You can invest through:

Lump Sum Investment

  • Invest a one-time amount
  • Units allotted based on the current NAV

SIP (Systematic Investment Plan)

  • Invest fixed amounts regularly (monthly/weekly)
  • Units allotted at different NAVs over time

Make Payment

Pay via:

  • Net banking
  • UPI
  • Debit mandate (for SIP)

Once payment is processed, units are allotted based on the applicable NAV, and they appear in your folio and CAS (Consolidated Account Statement).

Tracking Your Units

You can track the number of units through the platform or the AMC website that you have invested through.

To access your complete unit holdings through the Consolidated Account Statement from NSDL or CDSL. CAS shows:

  • All mutual fund folios across AMCs
  • Units held in each scheme
  • Transaction history with dates and NAVs

How to get CAS:

  • Email request to NSDL/CDSL with registered email ID
  • Download from the depository websites
  • Automated monthly email if transactions occurred

The Foundation of Your MF Portfolio

Mutual fund units are the foundation of your investment in any mutual fund scheme, representing your proportional ownership in the fund’s portfolio. Understanding how units are allotted, how NAV affects their value, and how taxation applies at redemption helps you make more informed investment decisions rather than investing blindly.

Whether you invest through lump sum or SIP, track your holdings via CAS, or switch between schemes, knowing how units work ensures you can verify allocations, evaluate performance accurately, and plan withdrawals efficiently. A clear grasp of mutual fund units ultimately helps you invest with confidence, transparency, and better long-term discipline.

FAQs

1. What are units in a mutual fund?

Units are ownership shares in a mutual fund scheme, similar to stock shares. Each unit represents proportional ownership of the fund’s underlying securities portfolio. When you invest, you buy units at the prevailing NAV.

2. How is the number of units calculated in mutual funds?

Units equal Investment Amount divided by NAV on allotment date. For example, investing ₹10,000 at NAV ₹50 gives you 200 units. Fractional units up to four decimals ensure full utilisation of the invested amount.

3. Can I have fractional mutual fund units?

Yes, Indian mutual funds allow fractional units up to four decimal places. This ensures every rupee in SIPs is fully invested without any amount remaining unutilised.

4. What happens to my units when I redeem?

During redemption, your specified units are sold at the applicable NAV. Capital gains tax applies based on the holding period.

5. Is higher NAV better in mutual funds?

No, a higher NAV doesn’t mean a better fund. Returns depend on NAV growth percentage, not absolute NAV value.