SME IPO Rules: How SME Listings Differ From Mainboard IPOs

An SME IPO is a public issue by a small company that lists on an SME platform, NSE Emerge or BSE SME, instead of the main board. Your minimum bid is two lots, and it must be worth more than ₹2 lakh. A mainboard IPO starts at ₹10,000 to ₹15,000. SEBI does not issue observations on an SME offer document; the stock exchange vets the draft.

Key facts

All SME rules above come from Chapter IX of the SEBI (Issue of Capital and Disclosure Requirements) Regulations, 2018, as amended on 8 March 2025. The mainboard rules come from Chapter II of the same regulations.

What an SME IPO is and where it lists

A company can use the SME route if its post-issue paid-up capital is up to ₹10 crore. Companies with paid-up capital above ₹10 crore and up to ₹25 crore may also choose it. The shares then list on a separate platform: NSE Emerge or BSE SME. Each exchange adds its own conditions to SEBI’s.

NSE Emerge, for example, asks for a three-year track record, positive net worth and positive free cash flow to equity in at least 2 of the 3 years before applying. It also rules out issues whose proceeds would repay loans from promoters or related parties.

For how IPOs work in general, see our explainer on what an IPO is. This page covers only where SME issues differ.

Lot size and minimum application

SEBI raised the SME entry ticket in March 2025. The minimum application is now two lots, and its value must be above ₹2 lakh. Lot sizes follow a standard SEBI table that depends on the price band. SEBI’s board note says one lot works out to ₹1,00,100 to ₹1,60,000, so two lots cost ₹2,00,200 to ₹3,20,000.

You can bid for more only in whole lots: three, four, five and so on. SEBI kept the trading lot the same as the application lot, so after listing you also buy and sell in lots.

Because every bid is above ₹2 lakh, the old “retail individual investor” label no longer fits. The regulations now reserve at least 35% of the net offer for “individual investors who apply for the minimum application size”. At least 15% goes to non-institutional investors (NIIs). Qualified institutional buyers (QIBs) can get up to 50%.

Within the NII share, one third is kept for bids above two lots and up to ₹10 lakh. The other two thirds go to bids above ₹10 lakh. Each NII who is allotted shares gets at least the minimum NII application size, if enough shares are available.

Disclosure and SEBI oversight

SEBI’s role in an SME issue is lighter. The company files its offer document with SEBI, but SEBI “shall not issue any observation” on it. The draft goes to the SME exchange, with the lead manager’s due-diligence certificate and site-visit report.

Since March 2025, the public can also comment on an SME draft:

• The draft must stay on the websites of the company, the exchange and the lead manager for at least 21 days.
• Within two working days of filing, the company must announce the filing in English, Hindi and regional newspapers.
• From 21 March 2026, a draft abridged prospectus must be filed and hosted with the draft.

The March 2025 amendment also tightened several rules for the company:

• Selling shareholders cannot offer more than 50% of their pre-issue holding.
• General corporate purposes are capped at 15% of the amount raised or ₹10 crore, whichever is less.
• Half of the promoters’ holding above the minimum contribution is locked in for two years, and the other half for one year.
• A credit rating agency must monitor use of the money if the fresh issue exceeds ₹50 crore.

Lighter review means you rely more on your own reading of the prospectus. Check the objects of the issue, related-party dealings and the lead manager’s past issues before you bid.

Applying and allotment

You apply for an SME IPO the same way as for any IPO: through ASBA in net banking or a UPI mandate in a broker app. UPI works for individual bids up to ₹5 lakh, so a two-lot SME bid usually fits. Our guide on how to apply for an IPO has the steps.

1. Find the issue on the NSE Emerge or BSE SME public issues page, or on our IPO calendar.
2. Read the red herring prospectus, including the risk factors and the market maker’s name.
3. Check that your bank account can block at least two lots at the upper end of the price band.
4. Place the bid for two lots, or a higher multiple of the lot size.
5. Approve the UPI mandate before 5 pm on the closing day.
6. Check allotment status after the issue closes.

An SME IPO must stay open for at least three working days and no more than ten. The company cannot allot shares if fewer than 200 people would receive them.

Market making and liquidity

Every SME issue must be fully underwritten, and the lead manager must take up at least 15% of the issue on its own account. A market maker, a broker appointed by the company, must quote buy and sell prices for at least three years after listing.

The market maker must hold an inventory of at least 5% of the shares being listed. If your holding is worth less than the minimum trading lot, the market maker must buy all of it in one go. Even so, trading volumes in many SME shares are thin, and you may not find a buyer at the price you want.

On listing day, SME shares go through the same special pre-open session as mainboard IPOs. For SME IPOs, the exchanges cap orders in that session at 90% above the issue price and do not relax the cap, according to a SEBI consultation paper of May 2026. Our guide to IPO listing day covers timings and selling.

Migration to the main board

An SME company with paid-up capital above ₹10 crore and up to ₹25 crore may move to the main board. Its shareholders must pass a special resolution by postal ballot. Non-promoter votes in favour must be at least twice the non-promoter votes against. The company must also meet the main board’s own listing criteria.

Since March 2025, a company whose paid-up capital would cross ₹25 crore through a rights, preferential or bonus issue can raise that capital without migrating. It must then follow the listing rules that apply to main board companies. Your shares carry over unchanged if a company migrates, and it then trades in the normal market.

Gains on SME shares are taxed like gains on other listed shares; see taxation of stocks.

Frequently asked questions

What is the minimum investment in an SME IPO?

Two lots, and the value must be above ₹2 lakh. Depending on the price band, two lots cost roughly ₹2,00,200 to ₹3,20,000.

What is the difference between NSE Emerge and BSE SME?

Both are SME platforms that follow SEBI’s Chapter IX rules. Each exchange sets its own extra eligibility conditions, such as NSE Emerge’s free cash flow test.

Does SEBI approve SME IPOs?

No. SEBI receives the offer document but issues no observations on it; the SME exchange reviews the draft.

Can I sell SME IPO shares on listing day?

Yes, once normal trading starts after the special pre-open session. You can sell only in multiples of the trading lot.

Is there a retail quota in SME IPOs?

At least 35% of the net offer is reserved for individual investors who apply for the minimum two-lot size. SEBI dropped the “retail” label because every bid is now above ₹2 lakh.

Why do SME IPOs have market makers?

SEBI requires a market maker for at least three years to give buy and sell quotes, because trading in small companies is often thin.

Can an SME company move to the main board?

Yes, if its paid-up capital is above ₹10 crore and up to ₹25 crore, shareholders approve by postal ballot, and it meets the main board’s criteria.

Sources

• SEBI (ICDR) Regulations, 2018, last amended 21 March 2026 — SEBI (checked 16 Sep 2026)
• SEBI (ICDR) (Amendment) Regulations, 2025 — SEBI (checked 16 Sep 2026)
• Review of SME framework under SEBI (ICDR) Regulations, board memorandum — SEBI (checked 16 Sep 2026)
• Eligibility criteria, public issues on Emerge — NSE (checked 16 Sep 2026)
• Special pre-open session — NSE (checked 16 Sep 2026)
• FAQs on UPI in public issues — SEBI (checked 16 Sep 2026)
• Consultation paper on price discovery in the pre-open call auction for IPO and re-listed scrips — SEBI (checked 16 Sep 2026)