SME IPO Means What? How SME IPOs Differ From Mainboard Issues

What does SME IPO mean? Put simply, an SME IPO is an initial public offering by a small or medium enterprise that lists on an exchange’s dedicated SME platform, either NSE Emerge or BSE SME, instead of the main board. Smaller companies get to raise money from the public under lighter listing requirements. Investors, in return, put up bigger minimum amounts, deal with thinner trading and take on more risk.

SME IPOs have caught on in a big way in India. Some pull in eye-popping subscription numbers and huge listing gains; others leave investors holding shares nobody wants to buy. Here we look at how SME IPOs work, where they part ways with mainboard IPOs, the rules SEBI tightened in 2025, and what we’d check before applying.

SME IPO means: the basics

A company going public in India has two routes to pick from:

• Mainboard IPO: lists on the main NSE and BSE platforms. These tend to be bigger companies with longer track records, and they face the full set of SEBI ICDR requirements.
• SME IPO: lists on NSE Emerge or BSE SME. These are smaller companies, usually raising far less money, under a separate chapter of the SEBI rules written for small issuers.

The SME platforms exist because plenty of growing businesses are too small for a mainboard IPO but still need equity capital to expand. A listing also gives promoters and early investors a market for their shares, and it lifts the company’s standing with lenders and customers.

Where SME IPOs part ways with mainboard IPOs

1. How big the company and the issue are

SME issuers are small, and their issues usually raise a fraction of what mainboard IPOs do. One handy marker comes from SEBI’s 2025 amendment. According to Financial Express, if further issues are likely to push an SME-listed company’s post-issue paid-up capital above ₹25 crore, it can raise that money without migrating to the main board, as long as it follows the LODR rules that apply to main-board companies.

2. The minimum you have to put in

The minimum bid in an SME IPO is a lot higher than in a mainboard issue. Take this week’s mainboard issues: one lot costs ₹14,700 for Tonbo Imaging and ₹14,650 for Bonfiglioli Transmissions at the upper band. SME IPOs have always had much bigger lot sizes, and under SEBI’s 2025 changes the minimum application is two lots. The idea is to keep casual punters out.

3. Market making and liquidity

SME stocks trade thinly, so SME issues normally appoint a market maker who has to quote buy and sell prices for a period after listing. Even then, volumes are often low, and in many SME stocks you can only trade in large lots. Getting out can take a while, especially when the market is falling.

4. Disclosure and review

SEBI reviews mainboard IPO documents. SME draft documents, on the other hand, have traditionally been cleared by the exchange. Since the 2025 changes, the SME draft red herring prospectus (DRHP) has to be open for public comments for 21 days, backed by newspaper announcements and a QR code so people can find it easily.

The biggest risk in an SME IPO usually isn’t the listing day. It’s the day you want to sell and discover how few buyers there are.

SEBI’s 2025 SME IPO reforms

After a flood of SME issues, SEBI notified a stricter framework on 4 March 2025. Financial Express (PTI) reported these as the main changes:

• Profitability test: SMEs need an operating profit (EBITDA) of at least ₹1 crore in at least two of the three previous financial years.
• OFS cap: the offer-for-sale portion can’t exceed 20% of the total issue size, and selling shareholders can’t sell more than 50% of what they already hold.
• Phased promoter lock-in: promoter holding above the minimum promoter contribution is released in two halves, one after a year and the other after two years.
• Minimum application of two lots, with NII allocation brought in line with the mainboard method.
• Use of proceeds: general corporate purposes are capped at 15% of the issue or ₹10 crore, whichever is lower, and the money can’t go towards repaying loans from promoters, the promoter group or related parties.
• Related party transactions: SME-listed companies have to follow the same RPT norms as main-board companies.

Financial Express also quoted primedatabase.com data showing that about 240 SMEs raised over ₹8,700 crore in 2024, close to double the ₹4,686 crore raised in 2023. That boom is what the tighter rules were responding to.

Moving up to the main board

Lots of SME companies hope to shift to the main board once they’ve grown. Migration generally means meeting the main board’s eligibility conditions, such as size, track record and shareholder approval. Moving up can improve liquidity and bring in a wider set of investors, which is partly why some investors go looking for fast-growing SME names. But nothing guarantees a migration, and companies that stall can stay illiquid for years. And with SEBI’s 2025 change letting companies raise more capital without migrating, subject to main-board LODR compliance, some may simply sit on the SME platform longer than they used to.

What happens on listing day

SME stocks list once shares are allotted and credited, just like mainboard IPOs. Because the floating supply is tiny, listing-day moves can be wild in either direction. If you get an allotment, make up your mind beforehand: are you selling on day one or holding for the long run? The lot-size rules carry on after listing too, so selling usually means selling a full trading lot. If buyers vanish, the market maker’s quotes may be about the only liquidity around, and the gap between buy and sell prices can be wide.

Why investors chase SME IPOs

• Listing gains: some SME IPOs have listed at big premiums, which brings in heavy subscription.
• Getting in early: investors buy in at an early stage of a company’s growth, sometimes before it moves to the main board.
• Niche businesses: SME platforms carry companies from sectors and regions the main board barely covers.

The risks of SME IPOs

• Liquidity risk: low volumes and big lot sizes make it hard to get out.
• Information risk: smaller companies get less analyst coverage and file simpler disclosures, so their business is harder to check.
• Governance risk: SEBI tightened the related-party and use-of-proceeds rules in 2025 precisely because of worries here.
• Valuation and price risk: heavy subscription can push listing prices well past fundamentals, and SME stocks can drop hard afterwards.
• Grey market influence: grey market premiums for SME IPOs are unofficial and often unreliable. Our explainer on what GMP in an IPO means covers this.

How to apply for an SME IPO

It works the same way as a mainboard IPO. You apply through your broker’s IPO section with UPI, or through ASBA in your bank’s net banking. Since the minimum is two lots, look at the total amount before you bid; it’s usually far more than a mainboard application. Once the issue closes, check your result with the methods in our IPO allotment status guide.

What to check before you apply

1. Read the RHP. Concentrate on the business, at least three years of financials, debt, related-party transactions and the objects of the issue.
2. Test the profitability. Is the company properly profitable, or did profits turn up just ahead of the IPO?
3. Look at the OFS share. A big OFS means existing holders are cashing out, not the company raising money to grow.
4. Compare valuation. Set the issue’s price-to-earnings against listed peers, bearing in mind that SME companies deserve a discount for their size and liquidity.
5. Check the lead manager’s record. Past SME issues from the same merchant banker can tell you plenty.
6. Treat it as a high-risk bet. Put in only what you could hold for a long time, or lose, without denting your finances.

Treat every SME IPO as a small-company investment first and a listing-day trade second. If you wouldn’t own the business for two years, think twice about bidding.

SME IPO vs mainboard IPO: quick comparison

• Platform: NSE Emerge / BSE SME vs the main NSE and BSE boards
• Company size: small and medium vs larger, established companies
• Minimum application: two lots, usually a much larger sum, vs one lot of about ₹15,000
• Liquidity: thin, with market makers vs generally deep
• Draft document review: exchange plus 21-day public comments vs SEBI review
• Risk: higher vs relatively lower

One last word on taxes and costs. Gains on SME shares are taxed like gains on any other listed equity, as short-term or long-term capital gains depending on how long you hold. Brokerage and statutory charges kick in when you sell. And because SME positions tend to be large in rupee terms, a few percent of slippage on the way out can eat noticeably into your real return, so build it in when you estimate likely profits.

Bottom line

An SME IPO is a public offering by a smaller company on a dedicated exchange platform. You get early access to growing businesses, but you also get large minimum bids, thin liquidity and more risk. SEBI’s 2025 reforms raised the bar on profitability, OFS size and use of proceeds, yet the homework is still yours to do. For a full framework to judge any public issue, read our pillar guide to IPO investing in India, and catch this week’s mainboard issues in our reviews of Tonbo Imaging and Bonfiglioli Transmissions.

This article is for education only and is not investment advice.