SME IPOs have become very popular in India because many small and medium companies have delivered strong listing gains in recent years. But SME IPOs are not the same as normal mainboard IPOs. The biggest difference is the minimum investment amount. A mainboard IPO may allow a retail investor to apply with a small amount, often around ₹10,000–₹15,000 per lot, but an SME IPO now requires a much higher application size. This means SME IPOs are not meant for casual investors who want to apply with a small amount just for listing gain.
From July 2025, SME IPO bidding rules became stricter. The old “Retail Individual Investor” category has been replaced by the Individual Investor category for SME IPOs. NSE’s circular says the minimum bid size for an Individual Investor must be 2 lots, with a minimum application size of above ₹2 lakh. It also says that cut-off price bidding is not available in SME IPOs under the new process.
What Is the Minimum Investment in an SME IPO?
The minimum investment in an SME IPO is now generally above ₹2 lakh for individual investors. But this does not mean you can apply for any amount slightly above ₹2 lakh. You must apply according to the IPO’s lot size.
Every SME IPO has a fixed lot size. The lot size means the minimum number of shares you must apply for. Under the new rule, an individual investor must apply for at least 2 lots. So, the minimum application amount is calculated like this:
Issue price × shares per lot × minimum 2 lots
For example, suppose an SME IPO has an issue price of ₹100 per share and one lot contains 1,200 shares. One lot would cost ₹1,20,000. Since the minimum requirement is 2 lots, you must apply for 2,400 shares. Your total application amount becomes ₹2,40,000.
So, in this case, you cannot apply for only one lot, even if one lot itself is above ₹1 lakh. The rule is 2 lots and application size above ₹2 lakh.
Why Did the Minimum Amount Become Higher?
SME IPOs carry higher risk than mainboard IPOs. These companies are smaller, have limited operating history, lower liquidity, smaller balance sheets and sometimes higher business concentration. SEBI and exchanges want SME IPO participation to come from investors who understand the higher risk and can block a larger amount.
This change also separates SME IPOs from regular retail-style investing. In mainboard IPOs, BSE’s general IPO FAQ describes retail individual investors as those investing not more than ₹2 lakh in an issue. But in SME IPOs, the new individual investor application itself must be above ₹2 lakh. That is why SME IPOs now behave more like serious capital participation rather than small-ticket retail applications.
No Cut-Off Price Option in SME IPOs
In mainboard book-built IPOs, retail investors often apply at the cut-off price. This means they agree to buy at the final discovered issue price. It is simple and safer for small investors.
But in SME IPOs, the cut-off price option is not available. NSE’s SME IPO circular clearly says placing bids at cut-off price shall not be applicable or available to any bidding category.
This means you must select the bid price yourself. If the IPO has a price band, investors usually apply at the upper price band to keep the bid valid, especially when demand is strong. But this also means you must be more careful before applying. You cannot treat SME IPO bidding as casually as a mainboard IPO.
Can You Modify or Cancel an SME IPO Bid?
This is another important change. NSE’s circular says downward modification and cancellation shall not be applicable to any category of bidding in SME IPOs.
So, once you apply, you should not assume that you can easily reduce the quantity, lower the price or cancel the application later. This makes preparation very important. Check the price band, lot size, total amount, bank balance and risk before submitting the bid.
Last-Day Bidding and UPI Mandate Timing
Under the new SME IPO bidding process, bidding for all categories on the last day closes at 4:00 PM. UPI mandate acceptance or confirmation is available up to 5:00 PM on the last day of bidding.
This timing matters because many investors wait until the final day to check subscription numbers. That is understandable, but risky. If your broker app is slow, your bank server is busy, or the UPI mandate does not come on time, your application may fail.
For SME IPOs, where the application amount is larger, do not wait for the final few minutes. Apply early enough and approve the mandate immediately.
Rules for Employee, Shareholder and Policyholder Categories
Some SME IPOs may have reserved categories, such as employees, shareholders or policyholders. NSE’s circular says employees must apply for a minimum of 2 lots with an application size above ₹2 lakh, and the application can be in multiples of lot size but not exceeding ₹5 lakh. For shareholder and policyholder categories, the minimum is also 2 lots with application size above ₹2 lakh.
This means even reserved categories are not small-ticket categories in SME IPOs. They also follow a higher minimum application requirement.
What About QIB and NII Categories?
Qualified Institutional Buyers and Non-Institutional Investors must apply for more than 2 lots in SME IPOs. For normal individual investors, the main point is simple: if you are applying as an individual, your minimum application is 2 lots and above ₹2 lakh. If you apply for more, your amount can go much higher depending on the lot size and issue price.
Why Retail Investors Must Be Careful
The higher application size means your risk is also bigger. If an SME IPO lists weakly or liquidity dries up after listing, exiting may not be easy. SME stocks often have lower trading volume than mainboard stocks. Sometimes there may be a wide gap between buyer and seller prices.
Before applying, read the prospectus carefully. Check revenue, profit, debt, promoter background, customer concentration, use of IPO funds, valuation and pending legal cases. Do not apply only because of GMP or social media hype.
Final View
The minimum application size for SME IPOs is now much higher than before. An individual investor must generally apply for at least 2 lots, and the application size must be above ₹2 lakh. There is no cut-off price option, and bid cancellation or downward modification is also restricted under the new SME IPO process.
The simple rule is this: SME IPOs are not small retail IPOs. They are high-ticket, higher-risk IPOs. Apply only when you understand the company, can block the required money comfortably, and are ready for liquidity risk after listing.
