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A mainboard IPO and an SME IPO differ in the issuer’s listing route and, under current NSE rules, in the minimum SME bid—not in whether an investor is automatically eligible or whether an investment is safe. For an NSE SME IPO opening on or after July 1, 2025, an Individual Investor must bid for exactly two lots with an application value above ₹2 lakh; more than two lots is categorized as NII–Individual. Mainboard lot sizes and application amounts depend on the particular offer. Check the live offer document before applying.
At a glance
| Name | Best for | Key spec | Platform | Checked |
|---|---|---|---|---|
| Mainboard IPO | Investors comparing an offer listed on an NSE mainboard route | NSE issuer criteria include at least ₹10 crore paid-up equity capital and ₹25 crore equity capitalization; lot and application amount vary by issue | NSE Main Board | November 2026 |
| SME IPO | Investors considering an offer on NSE’s SME platform and able to meet its current bid threshold | For the Individual Investor category: exactly two lots and application value above ₹2 lakh; more than two lots is NII–Individual | NSE EMERGE | November 2026 |
Prices checked November 2026.
The issuer thresholds shown are NSE listing criteria, not investor qualifications or an assessment of an issue’s merits. The application rules and lot sizes are issue- and category-specific; verify the current offer document and exchange information before bidding.
What is the difference between a mainboard IPO and an SME IPO?
The central difference is the exchange listing route and the rules attached to it. “Mainboard” and “SME” describe where an issuer seeks to list and which listing framework applies; they do not by themselves tell you whether a particular company is financially sound, whether its shares will be liquid, or whether its IPO is suitable for you.
For NSE’s mainboard public-issue eligibility, the exchange lists, among other prerequisites, minimum paid-up equity capital of ₹10 crore and minimum equity capitalization of ₹25 crore. It also specifies a three-year track-record condition for the applicant or certain qualifying promoters or promoting companies, along with other requirements, including positive net worth subject to a stated exception. These are issuer-side listing tests, not conditions an individual applicant must meet.
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NSE says an issuer with post-issue face-value capital up to ₹25 crore is eligible for its SME platform, subject to applicable SEBI ICDR requirements and the exchange’s process. That threshold is not a recommendation to invest, nor does meeting it establish the company’s business quality. Read the exchange’s mainboard public-issue eligibility criteria and NSE EMERGE requirements and process for the issuer-side rules.
The two tests you must keep separate
There are two different questions in every comparison. First, can the company use this listing platform? Second, can you submit a valid bid in the category you have selected? A company’s ₹10 crore paid-up capital, ₹25 crore equity-capitalisation or three-year track-record condition does not become a personal qualification for an applicant. Conversely, satisfying the SME Individual Investor bid rule does not tell you whether the issuer meets the exchange’s broader business, disclosure or financial requirements.
This distinction also prevents a common error: treating “SME” as a synonym for a particular return profile. The platform is a route for eligible issuers. It is not a promise of growth, a guarantee of allotment, or evidence that the shares will be easy to buy or sell after listing. Judge the individual offer from its disclosures and terms.
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| Comparison point | Mainboard IPO | NSE SME IPO |
|---|---|---|
| Issuer threshold highlighted by NSE | At least ₹10 crore paid-up equity capital and ₹25 crore equity capitalization; a three-year track-record condition and other requirements also apply | Post-issue face-value capital up to ₹25 crore for platform eligibility, subject to applicable SEBI ICDR rules and the exchange process |
| Individual application minimum | No single universal amount; use the issue’s price and lot | Exactly two lots and application value above ₹2 lakh for the Individual Investor category under the process for issues opening on or after July 1, 2025 |
| More than the minimum | Follow the category and issue rules in the offer document | More than two lots is classified as NII–Individual |
| Bid cancellation or downward change | Depends on the applicable category and issue rules | Not permitted under the current SME process |
| Final-day mechanics cited by NSE | Check the live issue schedule | June 2025 circular specifies a 4 p.m. bid close and UPI mandate acceptance through 5 p.m.; verify the live schedule |
The table is a starting point, not a substitute for the current prospectus. Final price, lot, dates, reservations, category definitions and payment instructions can differ from one issue to another.
Who is eligible to apply?
Investor eligibility is separate from an issuer’s eligibility to list. You do not need to meet the company’s paid-up capital or track-record tests to apply; instead, follow the investor categories, reservation terms and application rules in that IPO’s current offer documents.
For NSE SME IPOs opening on or after July 1, 2025, the exchange’s current process uses the category name Individual Investor rather than the former Retail Individual Investor category. Under the NSE FAQ, an Individual Investor bid must be for exactly two lots and have an application value above ₹2 lakh. A bid for more than two lots is classified as NII–Individual. Category names matter: do not rely on older guides that describe the previous SME retail rules.
An issue may also have reserved categories, such as employee, shareholder or policyholder reservations, with their own conditions. NSE’s FAQ says shareholder and policyholder bids in SME IPOs also require at least two lots and an application value above ₹2 lakh; employee bids have a separate stated limit. The reservation, eligibility proof and bid terms can differ by issue, so check the live offer document rather than assuming a category applies to you.
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What to verify in your category
- Whether the issue is using the post-July 1, 2025 SME process.
- Whether you are applying as an Individual Investor, NII–Individual or through a reserved employee, shareholder or policyholder category.
- The minimum and maximum lots, price-band rules and any category-specific reservation.
- Whether the name, PAN, demat details and UPI-linked bank account match the application requirements.
A valid payment instruction cannot cure a wrong category selection. Resolve the category question before placing the bid.
What is the minimum amount to apply for an SME IPO?
For the NSE SME Individual Investor category under the process effective for issues opening on or after July 1, 2025, the application must cover exactly two lots and have a total value above ₹2 lakh. The exact share count and rupee amount depend on that IPO’s lot size and price.
To work out the bid value, use the issue’s stated price and lot quantity: multiply the number of shares in one lot by the selected price, then multiply by two lots. The resulting amount must satisfy the above-₹2-lakh rule for an Individual Investor bid. Do not substitute a lot size from another IPO or an old article; lot size and price are issue-specific. Check the live prospectus or offer document and NSE’s e-IPO FAQ for the applicable issue details.
If you intend to bid for more than two lots, NSE classifies the application as NII–Individual rather than Individual Investor. That is a category change, not simply a larger version of the same individual bid. Confirm the applicable category limits, terms and funds needed in the current issue documents before submitting.
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The wording is not a suggestion to round up an unrelated amount. The two-lot quantity and the issue’s selected price together determine the application value. If the resulting value does not exceed ₹2 lakh, the bid does not meet the stated Individual Investor threshold. Conversely, choosing additional lots takes the application into the NII–Individual classification, with the rules that apply to that category.
Because the price band can change to a final issue price and because every issuer sets its own lot quantity, calculate from the live terms displayed in the application window. Keep enough funds available for the complete mandate amount, not merely an estimate based on an old price or another SME issue.
Do mainboard IPOs have a fixed minimum lot or application amount?
No single current mainboard lot value or application amount applies to every IPO. The issue sets its own lot quantity and price, so the amount needed depends on the live offer terms and the investor category you select.
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Read the current offer document for the minimum bid quantity, price band, permitted bid increments and category reservations. Calculate the amount using that issue’s stated lot and bid price, and make sure your application follows the category rules. An older general comparison—or another company’s IPO—cannot establish the amount for a new offer.
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Do not confuse lot size with affordability
A lot is simply the issue-defined number of shares used for bidding. It is not a quality rating and it is not a forecast of the first-day price. A lower share price can still produce a substantial application if the lot contains many shares; a higher share price can produce a different total with a smaller lot. Compare the total rupee commitment, the category and the risk disclosures, rather than looking only at the per-share price.
Can you change or cancel an SME IPO bid?
Under NSE’s current SME bidding process, bid cancellation and downward modification are not permitted for SME IPO categories. Review the quantity, price, category and investor details carefully before you submit the application.
NSE’s June 18, 2025 circular also says cut-off-price bids are not permitted under the new SME process. On the final bidding day, bidding closes at 4 p.m., while UPI mandate acceptance is available through 5 p.m. These are the timings in the cited circular; confirm the live issue schedule and current exchange instructions rather than assuming a deadline based on another IPO.
For a UPI application, submitting a bid is not the same as completing the mandate step. Follow the instructions shown by your application channel and ensure the mandate is accepted within the applicable time. NSE’s June 2025 circular on SME IPO bidding changes sets out the process and the relevant deadlines.
Practical submission checklist
- Read the lot quantity, price band and category displayed for the live issue.
- Confirm the number of lots and the resulting blocked funds before submitting.
- Check PAN, demat, bank and UPI details character by character.
- Submit early enough to allow for an application-channel or bank delay.
- Accept the UPI mandate before the stated deadline and retain the confirmation.
- Save the application number and acknowledgement for status checks.
Do not assume that a pending UPI notification means the bid has been fully completed. Check the application channel’s status and act within the permitted time.
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What risks should you check before applying?
The listing platform does not determine an IPO’s investment risk. Assess the individual issuer and offer using their disclosures; do not infer business quality, likely returns, volatility or liquidity from the “mainboard” or “SME” label alone.
- Business and financial position: Understand how the company earns revenue, what drives its costs, and what its financial statements say about its operating results and financial condition.
- Use of proceeds: Check how the company says it will use the issue funds and whether the stated purpose is clear in the offer document.
- Promoters and related parties: Review promoter disclosures and related-party transactions, including the information and risk factors provided by the issuer.
- Price and dilution: Consider the issue price in relation to the disclosures available and understand how the issue affects shareholding and dilution.
- Issue-specific terms: Confirm the price, lot size, dates, category reservations, application amount and other live terms. These details are not interchangeable between IPOs.
SEBI’s General Information Document for Investing in Public Issues advises applicants to read the draft prospectus and application form carefully. It says the issue-specific terms and issuer information are in the draft prospectus, and that prospectus disclosures prevail if they conflict with the general document. SEBI also warns that equity investment involves risk and applicants should not invest funds unless they can afford to lose their investment.
Do not interpret an exchange’s review as a guarantee or regulatory endorsement of the issuer. NSE says it reviews an SME draft prospectus from the standpoint of checking listing requirements and that its review should not be construed as approval under other laws. The NSE EMERGE process page explains this limit. Your decision should rest on the issuer’s disclosures, the offer terms and your own ability to bear the risk—not the exchange label alone.
Questions to ask while reading the prospectus
Can you explain the company’s products, customers and revenue drivers in plain language? Are recent results dependent on one customer, one geography or an unusually favourable period? Does the stated use of proceeds address a clearly described need? What dilution follows the issue, and how do promoters’ holdings and related-party arrangements affect the picture? Which risk factors could materially change the business case?
These questions do not produce a guaranteed answer, but they force the decision back to issuer-specific information. Read the financial statements, risk factors, promoter details and issue-price disclosures together instead of relying on a headline, an unofficial subscription number or a platform label.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should you compare two live IPOs before bidding?
Use the offer documents and current exchange information to compare the specific issues, not just their listing categories. A short, disciplined check can prevent the most consequential category and amount mistakes.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minute- Identify the route. Confirm whether the offer is on the mainboard or NSE SME platform. Use that to locate the relevant exchange information, not as a shortcut for judging investment quality.
- Read the current offer document. Review the issuer’s business, financials, use of proceeds, promoter and related-party disclosures, risk factors and issue price. Confirm the document is for the live offer.
- Verify your investor category. For an SME issue, apply the current category rules; do not use the old retail terminology for issues covered by the post-July 1, 2025 process. Check any reservation conditions that you intend to use.
- Calculate the required bid amount. Use the issue’s current lot size and price. For an SME Individual Investor bid, confirm it is exactly two lots and above ₹2 lakh; if bidding for more, check the NII–Individual rules.
- Check what can and cannot be changed. For an SME IPO, the current process does not allow cancellation or downward modification. Confirm quantity, price, category and application details before submitting.
- Follow the application schedule. Check the issue’s live closing time and, if applying through UPI, complete the mandate acceptance within the applicable deadline. NSE’s circular specifies a 4 p.m. final-day bid close and UPI mandate acceptance through 5 p.m. for the process it describes.
- Document your decision. Save the prospectus, application acknowledgement, mandate confirmation and the calculation supporting your bid. This makes it easier to resolve a status question and to revisit why you applied.
For mainboard offers, verify the specific issue’s category rules and bid mechanics rather than assuming SME rules apply. For either route, the offer document and current exchange instructions are the practical references for that IPO.
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Where can you check an IPO application’s status?
NSE’s e-IPO FAQ includes application-status guidance, along with information on e-IPO applications and UPI mandates. The route you used to apply can affect where you should check, so follow the instructions for your application channel and the live issue rather than relying on a status page for a different intermediary or IPO.
Keep your application details available when checking. If the status is unclear, consult the relevant exchange FAQ and the support channel associated with the application; do not assume that placing a bid alone confirms every subsequent application step is complete.
Common mistakes to avoid
- Using an old SME article: The current Individual Investor category and two-lot, above-₹2-lakh threshold apply to relevant issues opening from July 1, 2025. Older “retail” explanations may describe a superseded process.
- Copying another IPO’s lot size: Every issue sets its own share quantity and price. Recalculate from the live document.
- Calling issuer criteria investor eligibility: Mainboard capital and track-record conditions belong to the company seeking listing.
- Assuming an exchange review is an endorsement: NSE’s SME review is limited to listing requirements.
- Waiting until the deadline: A submitted bid still requires the applicable UPI mandate step, and the cited SME circular gives separate 4 p.m. and 5 p.m. cut-offs.
- Planning to reduce an SME bid later: Current SME rules do not permit cancellation or downward modification, so check everything first.
Bottom line
Mainboard and SME IPOs should be compared on two levels: the issuer’s route to listing and your exact application mechanics. NSE highlights ₹10 crore paid-up equity capital and ₹25 crore equity capitalization for mainboard eligibility, while an NSE SME issuer can be eligible with post-issue face-value capital up to ₹25 crore, subject to the applicable rules. For an NSE SME issue opening on or after July 1, 2025, an Individual Investor must bid for exactly two lots worth more than ₹2 lakh; more than two lots is NII–Individual, and SME bids cannot be cancelled or reduced under the current process. Use the live offer document, calculate the actual amount, complete the UPI step on time and invest only after reviewing the issuer’s risks and your ability to bear a loss.
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Frequently Asked Questions
Does NSE’s SME draft-prospectus review mean SEBI has approved the IPO?
No. NSE says its review is limited to checking the draft prospectus against listing requirements and should not be treated as approval under other laws. Read the issuer’s offer disclosures and applicable regulatory documents; an exchange review is not an investment endorsement.
Can I use the RBI’s SME-versus-mainboard table from 2022 to decide how much to bid now?
No. That comparison is historical, and its SME application figures predate the process that took effect for relevant NSE SME IPOs opening from July 1, 2025. Use the current issue’s offer document and NSE’s current e-IPO guidance for the bid amount and category.
Where do I check whether my IPO application has been recorded?
NSE’s e-IPO FAQ provides application-status guidance. Check using the route associated with your application and follow its instructions; the FAQ also covers e-IPO and UPI mandate questions.
What is the minimum SME IPO application for an Individual Investor?
For an NSE SME IPO opening on or after July 1, 2025, the Individual Investor category requires exactly two lots and an application value above ₹2 lakh. The share count and exact rupee amount depend on that issue’s price and lot size.
What happens if I apply for more than two SME lots?
Under NSE’s current SME process, more than two lots is classified as NII–Individual rather than Individual Investor. Check the live offer document for the category’s terms, limits and required funds.
The Bottom Line
Bottom line: Issuer listing thresholds are not investor qualifications. For a current NSE SME IPO, an Individual Investor needs exactly two lots worth more than ₹2 lakh; more than two lots becomes NII–Individual, and cancellation or downward modification is not allowed. Check the live offer document, complete the UPI mandate by the stated deadline and assess the issuer’s disclosures before investing.
