IPO Lot Size Calculator
Calculate the minimum investment amount for any IPO instantly. Enter price band and lot size to get started.
How to Use This Calculator
Enter the upper price band of the IPO (cut-off price)
Enter the lot size — number of shares per lot from the IPO prospectus
Enter number of lots you want to apply for (1 lot = best for retail)
Click Calculate — see minimum investment amount instantly
What is IPO Lot Size?
In an IPO, investors cannot apply for any random number of shares. They must apply in fixed multiples called lots. A lot is the minimum number of shares an investor must apply for.
For example, if an IPO has a lot size of 46 shares and price band of ₹304-₹321, the minimum investment is 46 × ₹321 = ₹14,766.
Retail investors can apply for a maximum of 13-14 lots (up to ₹2 lakh investment). Beyond ₹2 lakh, the application falls under the NII (HNI) category.
Why Does Lot Size Matter?
Lot size determines how much money an investor needs to participate in an IPO. SME IPOs typically have larger lot sizes requiring ₹1-2 lakh minimum investment, while mainboard IPOs are usually around ₹14,000-₹15,000 minimum investment.
Allotment and Lot Size
In an oversubscribed IPO, retail investors can receive a maximum of 1 lot through the lottery system, regardless of how many lots they applied for. This is why applying for just 1 lot is the recommended strategy for retail investors.
Example IPO Calculations
Example 1
Typical Mainboard IPO
Example 2
Mid-size Mainboard IPO
Example 3
Typical SME IPO
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