What is IPO Lot Size?

If you have applied for an IPO before, you would have noticed the term “Lot Size” in the application form. But do you know what an IPO Lot Size is and why it matters? I think we should find it out.

In simple words, IPO lot size is the minimum number of shares you can buy in one go when applying for an IPO. You cannot apply for any random number of shares — you have to apply in multiples of that lot size.

In this blog, we’ll explain what IPO lot size is, why it matters, how it is decided, and how you can calculate the minimum amount you need to apply.

An IPO is when a private company offers its shares to the public for the first time and becomes a listed company on the stock exchange. During this process, the company decides how many shares it wants to sell and at what price.

The lot size is the smallest “pack” of shares that investors can apply for. For example:

If the lot size is 50 shares, you can apply for 50, 100, 150, 200 shares, etc. (multiples of 50).
You cannot apply for 40 or 55 shares — only in full lots.

So, lot size is like a “unit” for IPO applications. It helps standardize how many shares each investor can buy and how shares are allotted later.

Why Does IPO Lot Size Matter?

Lot size is important for a few key reasons:

1. Standardizes the IPO Process

Without lot size, every investor could apply for any number of shares (like 1 share, 10 shares, 100 shares, etc.). This would make it very difficult to manage applications and allot shares fairly.

Lot size brings order — everyone applies in multiples of the same lot, making the process smooth and systematic.

2. Ensures Fair Allotment

SEBI (Securities and Exchange Board of India) wants as many small investors as possible to get at least one lot in an IPO, especially in the retail category.

If the lot size is too big, only rich investors can participate. If it’s too small, the number of applications becomes unmanageable. So, companies and regulators fix a lot size that balances accessibility and practicality.

3. Helps You Calculate Minimum Investment

Knowing the lot size and the issue price per share helps you quickly calculate how much money you need to apply.

For example:

Issue price = ₹100 per share
Lot size = 148 shares
Minimum investment = 148 × ₹100 = ₹14,800

So, you need at least ₹14,800 to apply for 1 lot.

Minimum vs Maximum Lot Size

In every IPO, there are two important limits:

1. Minimum Lot Size

This is the smallest number of shares you can apply for in one application.

It is fixed by the company issuing the IPO.
You must apply for at least 1 lot (or sometimes more, like 3 lots) to participate.
Example: If lot size is 50 shares and minimum requirement is 3 lots, you must apply for at least 150 shares.

2. Maximum Lot Size

This is the highest number of lots you can apply for in a single application.

It prevents any single investor from buying too many shares and “cornering” the IPO.
Example: If lot size is 50 and maximum lot size is 10 lots, you can apply for a maximum of 500 shares (10 × 50).

These limits help maintain fairness and ensure wide participation in the IPO.

How is Lot Size Decided in an IPO?

The company issuing the IPO, along with its merchant bankers and regulators (like SEBI), decides the lot size based on several factors:

1. Share Price

Higher share price → higher lot size (so that the minimum investment per lot is not too low).
Lower share price → lower lot size (to keep the IPO affordable for small investors).

2. Total Number of Shares Offered

If the company is offering a large number of shares, the lot size may be adjusted to manage the number of applications.

3. Regulatory Guidelines

SEBI has guidelines to ensure that the IPO is accessible to retail investors.
For retail investors, the minimum lot size is often set so that the minimum investment is around ₹14,000 to ₹15,000.

4. Market Conditions

Investor demand, market sentiment, and liquidity also influence the lot size.
In a very popular IPO, the company may keep the lot size small so that more people can participate.

5. Investor Participation

The goal is to make the IPO attractive and accessible to a wide range of investors, not just big institutions.

How to Calculate Minimum Investment in an IPO

Calculating the minimum amount you need to apply is very simple:

Minimum Investment = Lot Size × Issue Price per Share

Example:

Issue price per share = ₹100
Lot size = 148 shares

Minimum investment = 148 × ₹100 = ₹14,800

So, you need at least ₹14,800 to apply for 1 lot. If you want 2 lots, you need ₹29,600, and so on.

Examples of Lot Size from Recent IPOs

Lot sizes can vary a lot from one IPO to another. Here are some real examples from recent Indian IPOs:

Company Name	Lot Size
Travenues Technology (Ixigo)	214 shares
Bajaj Housing Finance	214 shares
Scoda Tubes Limited	100 shares
Accretion Pharmaceuticals Limited	1,200 shares
N R Vandana Tex Industries Limited	3,000 shares
Prostarm Info Systems Ltd	142 shares

As you can see, lot sizes can be as small as 100 shares or as large as 3,000 shares, depending on the company and price.

Conclusion

IPO lot size is a simple but important concept:

It is the minimum number of shares you can apply for in an IPO.
You must apply in multiples of the lot size.
It helps standardize the IPO process and ensures fair allotment.
You can easily calculate the minimum investment using:
Lot Size × Issue Price per Share

Before applying for any IPO, always check:

The lot size
The issue price
The minimum and maximum number of lots allowed

This will help you plan your investment and avoid mistakes in the application.

Learn More:

Frequently Asked Questions (FAQs)

Q1. What is IPO lot size?
IPO lot size is the minimum number of shares you can apply for in one application. You must apply in multiples of this lot size.

Q2. Can I apply for less than one lot?
No, you cannot apply for less than one lot. You must apply for at least 1 lot (or more, as specified in the IPO).

Q3. How is lot size decided?
Lot size is decided by the company issuing the IPO, based on share price, total shares offered, SEBI guidelines, and market conditions.

Q4. How do I calculate minimum investment in an IPO?
Multiply the lot size by the issue price per share.
Example: Lot size = 100 shares, price = ₹150 → Minimum investment = ₹15,000.

Q5. Why is lot size important?
Lot size standardizes the IPO process, ensures fair allotment, and helps small investors participate with a fixed minimum amount.

Q6. Can lot size be different for different investor categories?
No, the lot size is the same for all investors (retail, HNI, QIB). But the minimum and maximum number of lots allowed may differ by category.

What is IPO Lot Size?

What is IPO Lot Size?