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Short answer: An IPO is not automatically a mainboard IPO, and an SME IPO is not simply a cheaper version of one. On the NSE, a mainboard issue and an NSE Emerge SME issue follow different issuer tests, application categories and trading conventions. For SME issues opening on or after July 1, 2025, an Individual Investor must bid for exactly two lots and apply for more than ₹2 lakh; the shares and rupee value in those lots vary by issue. That application threshold is not a universal trading-lot value, and neither an SME listing nor an allotment guarantees liquidity or a profit.
This guide separates issuer eligibility from investor bidding rules, explains what the NSE criteria actually say, and gives a practical way to assess an issue’s cash commitment, market depth and issuer-specific risks. The exchange figures and bidding rules are current to October 13, 2026; verify the live issue documents and current NSE/SEBI requirements before applying.
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What “IPO” and “SME IPO” mean
An initial public offering is the first public sale of a company’s shares. In India, the important distinction is the platform and route on which those shares are admitted to trading. A mainboard IPO seeks admission to the NSE mainboard (or another mainboard route), while an SME IPO is admitted to an SME platform such as NSE Emerge.
“Eligibility” has two different meanings:
- Issuer eligibility: whether the company satisfies the exchange and securities-law conditions to bring an issue and list.
- Investor eligibility and bidding: which category you fall into, how many lots you must apply for, how funds are blocked and when a bid can be changed.
The thresholds below are NSE criteria. They are not a complete statement of SEBI’s ICDR regulations, BSE rules or the terms of a particular offer document. A company meeting an exchange threshold has not thereby become a good investment.
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NSE mainboard IPO eligibility
NSE’s public-issue criteria set minimum size and operating-history conditions, alongside compliance and investor-protection requirements. The principal figures are:
| Test | NSE mainboard requirement | How to read it |
|---|---|---|
| Post-issue paid-up equity capital | At least ₹10 crore | The capital must meet the threshold after the issue, not merely before it. |
| Post-issue equity capitalization | At least ₹25 crore | NSE describes capitalization as the issue price multiplied by post-issue shares. |
| Track record | At least three years through the applicant, promoter/promoting company, or, in specified circumstances, a converted partnership | Read the exact route and continuity in the offer document. |
| Net worth | Positive net worth, subject to a stated exception for proposed issues above ₹500 crore | The exception does not remove the need to examine the company’s financial position and applicable rules. |
| Other conditions | Compliance with applicable laws, investor-grievance arrangements, payment-default and rejection-history conditions, among others | These are eligibility and governance screens, not a forecast of returns. |
The ₹25 crore capitalization figure is not the amount an investor must pay. It is a post-issue company-level calculation based on the offer price and the number of post-issue shares. The minimum application amount for a particular mainboard issue comes from its prospectus and lot size.
NSE Emerge SME IPO eligibility
NSE Emerge uses a different route designed for smaller issuers. The exchange page places a ceiling on post-issue paid-up capital and adds profitability, cash-flow and track-record tests:
| Test | NSE Emerge criterion | Qualification |
|---|---|---|
| Post-issue paid-up capital | Must not exceed ₹25 crore | This is a ceiling for the SME route; it is not a minimum issue size. |
| Track record | Three years through specified applicant/promoter routes or a converted firm | The exact continuity and conversion conditions must be checked in the current criteria and offer document. |
| Operating profit | EBITDA of at least ₹1 crore from operations in any two of the three preceding financial years | “Any two” means the test is met in two years, not necessarily all three. |
| Net worth | Positive net worth | Review audited statements, adjustments and the latest available period. |
| Free cash flow to equity | Positive in at least two of the three preceding financial years | Cash generation is a separate test from accounting profit. |
| Offer-for-sale limit | SME IPO offer for sale cannot exceed 20% of the total issue size | Apply the percentage to the issue as structured in the offer document. |
| Selling-shareholder limit | A selling shareholder cannot sell more than 50% of that shareholder’s holding | Check the pre-issue holding and the disclosed sale. |
| Other conditions | Insolvency and winding-up status, regulatory action, merchant-banker requirements, issue-proceeds and disclosure conditions, among others | These conditions require issue-specific verification. |
The SME route is therefore not defined only by a company being “small” or “new.” It combines a capital ceiling with operating-profit, net-worth, cash-flow and conduct requirements. Conversely, passing those tests says nothing about valuation, competitive strength, governance quality or the ease of selling after listing.
Mainboard and SME criteria compared
| Question | NSE mainboard route | NSE Emerge SME route |
|---|---|---|
| Capital-size direction | Minimum ₹10 crore post-issue paid-up capital and ₹25 crore post-issue equity capitalization | Maximum ₹25 crore post-issue paid-up capital |
| Profit test stated by NSE | The cited mainboard page does not impose the same ₹1 crore-in-two-years EBITDA test described for Emerge | EBITDA of ₹1 crore from operations in any two of the prior three financial years |
| Cash-flow test stated by NSE | No equivalent Emerge FCFE test in the criteria summarized here | Positive free cash flow to equity in at least two of the prior three financial years |
| Track record | Three-year route through the applicant, promoter/promoting company or qualifying converted partnership | Three-year route through specified applicant/promoter or converted-firm paths |
| OFS restriction | Use the issue’s prospectus and applicable rules | OFS capped at 20% of total issue size; a selling shareholder’s sale capped at 50% of that holding |
| What the route proves | That the issuer has passed the applicable listing screens | That the issuer has passed the applicable SME listing screens |
Do not turn this table into a quality ranking. A larger company can have weak cash generation or governance, and a smaller issuer can have a sound business. The offer document, audited accounts, valuation and trading conditions remain decisive.
SME IPO lot sizes and the July 2025 bidding rule
Three numbers must be kept separate: the share lot (how many shares one lot contains), the rupee value of a lot at the issue price, and the minimum application category available to you.
Individual Investor category
For NSE SME issues opening on or after July 1, 2025, NSE replaced the former Retail Individual Investor category with Individual Investor. An Individual Investor application is for exactly two lots and must have a minimum application amount above ₹2 lakh. The issue’s price band and lot size determine the actual share count and amount. An application is not automatically ₹2 lakh, and a trading lot is not automatically worth ₹2 lakh.
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NSE’s FAQ classifies an application for more than two lots as Non-Institutional Investor (NII)–Individual. Qualified institutional buyers and NIIs apply for more than two lots under the applicable category rules. Reservation categories can have their own minimum-lot provisions, so use the live issue instructions rather than assuming that the Individual Investor rule applies to every applicant.
Bid changes and deadlines
The NSE circular for the revised SME process states that:
- Cut-off-price bidding is unavailable for SME issues.
- Downward modification and cancellation are unavailable.
- Bidding closes at 4:00 p.m. on the final bidding day.
- For UPI applications, mandate confirmation is available until 5:00 p.m.
Those times govern the circular’s process; an issue notice can contain operational instructions you must follow. Submit early enough to allow your broker, bank and UPI app to process the mandate.
How an SME application works
- Read the live issue details. Confirm the price band, one-lot share count, two-lot application value, opening and closing dates, category, reservation and the stated trading lot.
- Choose the correct category. Bid for exactly two lots if you meet the Individual Investor definition; a larger bid is treated as NII–Individual under the NSE FAQ.
- Enter the bid without a cut-off selection. SME issues do not offer cut-off-price bidding, so enter a permitted price within the band.
- Submit through ASBA or UPI as offered by your intermediary. Check the application number, PAN, demat details, bank account and UPI ID before submission.
- Approve the mandate before the deadline. A submitted form is not enough if the UPI mandate remains unconfirmed. NSE’s circular gives a 5:00 p.m. final-day mandate-confirmation time.
- Monitor allotment and funds. In ASBA/UPI, the application amount is blocked and only the amount due for allotted shares is debited; excess is unblocked after the process. The bank’s release timing can vary.
Because downward modification and cancellation are unavailable for the SME process described by NSE, treat the submitted quantity and price as a final decision. Check every field before authorizing the block.
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Mainboard IPO applications and lot sizes
There is no single current rupee lot value for all mainboard IPOs. The prospectus for each issue states its lot size, price band, category limits and bid deadlines. A mainboard application can therefore require materially less or more cash than another mainboard issue, and it cannot be compared fairly with an SME issue using a fixed example.
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ASBA and UPI generally block the requested funds in your bank account and debit only the amount required for the allotment; the balance is released. SEBI’s stated UPI limit for a retail individual IPO application is ₹5 lakh. That retail-specific limit should not be applied automatically to an SME Individual Investor application: check the current category and intermediary instructions.
Before a mainboard bid, verify whether the issue permits cut-off bidding, the permitted price modifications, the final bid and mandate times, and the rules for withdrawal. These details are issue-specific and can differ from the SME process.
Application size versus trading-lot size
The two-lot SME minimum increases the cash committed at application and can make position sizing less granular. Suppose an issue has a lot of 800 shares at ₹150: one lot is 800 shares worth ₹1,20,000, while two lots are 1,600 shares worth ₹2,40,000. That arithmetic is only an illustration; a live issue can use a different lot and price.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsAfter listing, the exchange’s trading lot and any applicable market rules determine how you can buy or sell. A large application does not prove that the post-listing market will be active, and a small lot does not guarantee a buyer. Consider both the cash needed to apply and the smallest practical position you may later be able to sell.
Liquidity: what can and cannot be concluded
No current, apples-to-apples statistic establishes a universal liquidity gap between all SME and mainboard stocks. It would be inaccurate to quote one average spread, turnover figure or probability of selling for an entire segment.
Assess the individual security instead:
- Traded value and volume: examine recent sessions, not only the first listing day.
- Trading frequency: a quote that appears occasionally is different from a market with regular transactions.
- Bid-ask depth: look at the quantity available at and near the quoted prices where your broker displays it.
- Order impact: compare your intended order with recent traded value; a large order may move the price.
- Shareholding concentration: concentrated holdings can leave fewer shares available for ordinary trading.
- Restrictions and surveillance: check applicable trading restrictions, price bands and exchange notices.
A displayed quote is not a promise that your full quantity can be sold at that price. You may receive a partial execution, a worse price or no execution. Treat this as market risk rather than as a guaranteed feature of every SME listing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can an SME company move to the mainboard?
Migration is conditional, not automatic. NSE’s migration criteria include a minimum three-year period listed on the SME platform and trading-related thresholds, together with financial, capital and shareholder requirements. Growth in revenue or market capitalization alone does not create an automatic right to move. If migration matters to your thesis, read the current criteria and the issuer’s disclosures rather than treating it as a promised exit route.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchRisks SEBI has highlighted for some SME issuers
SEBI’s investor advisory, referring to its August 28, 2024 press release, warned that some SME companies or promoters had made exaggerated operational claims. In examples described by the regulator, bonus issues, stock splits or preferential allotments could create optimism and lift prices, followed in some cases by promoter sales at elevated prices. This is a regulator-described pattern in some cases, not a statement about every SME issuer.
A January 2025 SEBI Board paper separately described instances in which issue proceeds were diverted to related or connected parties or promoter-controlled shell companies, as well as circular sales and purchases among related parties. These observations make related-party disclosures, end-use evidence and cash movements central parts of due diligence.
The same Board paper recorded that, in FY 2024–25 through October 15, 2024, more than ₹5,700 crore had been raised through 159 SME IPOs. That is a time-bounded statistic, not a full-year or current total.
Issuer-level due diligence checklist
- Start with the prospectus. Read the risk factors, objects of the issue, use-of-proceeds schedule, promoter disclosures, litigation and regulatory sections.
- Test the financial story. Compare audited revenue, EBITDA, operating cash flow and free cash flow across the stated periods. Reconcile unusual changes with notes to the accounts.
- Trace the money. Identify debt repayment, capital expenditure, acquisitions, working capital and general-corporate-purpose allocations. Compare later disclosures with the promised use when information becomes available.
- Inspect related parties. Look for loans, advances, purchases, sales, guarantees, commissions, shell entities and circular transactions involving promoters or connected parties.
- Check ownership and selling. Review promoter holdings, lock-ins, proposed offer-for-sale shares, preferential allotments, pledges and any concentration that could affect market depth.
- Verify claims independently. Match customer, capacity, order-book and expansion claims against filings and credible independent records. Do not rely on social-media tips, rumours or promotional messages.
- Check defaults and legal exposure. Review borrowings, overdue payments, insolvency or winding-up matters, material litigation and regulatory actions.
- Assess valuation. Compare the offer price with appropriate listed peers and the company’s own earnings and cash generation; do not use a peer multiple without checking business differences.
- Confirm the mechanics immediately before bidding. Recheck price, lot, two-lot application amount, category, deadline, mandate time and cancellation rules in the live notice.
- Size for a difficult exit. Assume you may need to wait, accept a lower price or sell in smaller executions. Only commit money you can afford to leave exposed to that risk.
SEBI’s advisory says investors should remain vigilant, exercise caution and conduct due diligence before investing in such companies. It also points investors toward a SEBI-registered Investment Adviser when professional advice is appropriate. Verify registration and suitability yourself; registration does not guarantee returns.
How to compare two actual issues fairly
If you are choosing between a mainboard IPO and an SME IPO, compare like with like instead of stopping at the label:
| Comparison area | Questions to answer |
|---|---|
| Platform and rules | Which exchange and platform? Which version of the issuer and bidding criteria applies on the opening date? |
| Business and financials | Are revenue, margins, operating cash flow and free cash flow durable, and how concentrated are customers? |
| Valuation | What is the offer price relative to earnings, cash generation and genuinely comparable companies? |
| Fresh issue versus OFS | How much money goes to the company, how much goes to selling shareholders, and what exactly will the company fund? |
| Application commitment | What is one lot, what is the required two-lot or other minimum application, and how long will funds be blocked? |
| Market depth | What are recent traded value, frequency, bid-ask quantities and shareholder concentration? |
| Governance and regulation | Are there related-party transactions, promoter pledges, litigation, defaults or regulatory actions? |
| Exit plan | Can you tolerate partial fills, a long holding period and a price below the listing quote? |
Bottom line for an investor
Choose the route only after identifying the exchange and reading the issue-specific document. NSE mainboard eligibility is built around minimum post-issue capital, capitalization, track record, net worth and compliance tests. NSE Emerge adds a ₹25 crore post-issue capital ceiling, a three-year route, ₹1 crore EBITDA in any two of three years, positive net worth and positive FCFE in at least two years, along with additional conduct and disclosure conditions.
For NSE SME issues opening from July 1, 2025, exactly two lots and an application above ₹2 lakh define the Individual Investor category; the issue’s own price and lot determine the amount. That larger commitment and coarser trading unit can affect risk, but neither proves illiquidity. Examine actual depth and execution conditions, investigate the issuer-specific risks SEBI has identified in some cases, and treat listing or allotment as an admission to a market—not as a promise of return or an assured exit.
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