Most people who apply for an IPO focus on the subscription numbers and the grey market premium. Few take the time to understand the regulations sitting underneath the entire process. That gap costs investors money, and it is entirely avoidable.

SEBI IPO regulations govern which companies can raise money from the public, how they must disclose information, how shares are distributed across investor types, and what insiders can and cannot do with their holdings after listing. These rules have been updated significantly through 2025 and into March 2026. This article covers everything an investor in India needs to understand before applying for an IPO.

What Are SEBI IPO Regulations?

SEBI, the Securities and Exchange Board of India, controls how companies raise money from the public through an IPO (Initial Public Offering). All IPO rules in India fall under the SEBI (Issue of Capital and Disclosure Requirements) Regulations, 2018, known as the ICDR Regulations.

These regulations cover six areas:

Who can launch an IPO and under what conditions
What companies must disclose to investors before and during the IPO
How shares are priced and what rules govern the price band
Which categories of investors can apply, and in what proportion
How longmust promoters and other pre-IPO shareholderst hold their shares after listing
Where the money raised through the IPO can actually be spent

SEBI updated the ICDR Regulations in early 2025, September 2025, and again in March 2026. The March 2026 amendments, effective from March 21, 2026, introduced depository-level enforcement of lock-in provisions and a new Draft Abridged Prospectus (DAP) requirement.

What Is the Role of SEBI in Approving or Rejecting an IPO?

Most investors assume SEBI “approves” an IPO the way a regulator approves a bank loan – checking whether the company is a sound investment. That’s not what SEBI does, and understanding the difference is one of the most useful five minutes you can spend before applying.

SEBI reviews disclosure, not business quality. When a company files its DRHP, SEBI checks whether the required information is complete, consistent, and not misleadingly worded. It does not assess whether the business will succeed, whether the valuation is fair, or whether the IPO is a good investment. A company can clear every SEBI requirement and still turn out to be a poor investment. That judgment is left entirely to you.
How SEBI signals its approval. SEBI’s approval takes the form of an Observation Letter. For mainboard IPOs, SEBI is required to issue this letter within 30 days of receiving the DRHP, or within 15 days of receiving a satisfactory response to any clarifications it has sought. Once issued, the Observation Letter is valid for 365 days, meaning the company must open its IPO within that window or refile the entire DRHP from scratch. Companies using the confidential pre-filing route get an 18-month window instead.
What can cause a rejection or delay. SEBI does not “approve” a DRHP as submitted. If disclosures are incomplete, risk factors are vague, or financial statements need restating, SEBI sends the filing back with queries. The company must resolve every query before the observation clock restarts, and unresolved or repeated issues can push a listing back by months. This is separate from the outright disqualifications covered earlier in this guide — promoters barred from capital markets, wilful defaulters, and fugitive economic offenders are blocked from launching an IPO at all, regardless of how clean their disclosures are.
What’s new in 2026. Since March 2026, the Draft Abridged Prospectus is part of what SEBI checks before issuing its Observation Letter, alongside the DRHP itself – one more layer of disclosure that has to clear review before a company can proceed.

The practical takeaway: a SEBI-approved IPO tells you the paperwork is in order. It tells you nothing about whether the company is worth your money. That’s the checklist the rest of this guide is built around.

Who Can Launch an IPO? Eligibility Explained

There is no single eligibility rule for all IPOs. SEBI maintains three separate frameworks: two routes for mainboard IPOs and a distinct set of criteria for SME IPOs.

Mainboard IPO: Route 1 (Profitability Route under Regulation 6(1))

This route is for established companies with a track record of profits.

Net tangible assets of at least ₹3 crore in each of the last 3 years
Net worth of at least ₹1 crore in each of the last 3 years
Distributable profits of at least ₹15 crore in aggregate across any 3 of the last 5 years
No change in promoter identity in the 12 months before filing the DRHP

Mainboard IPO: Route 2 (QIB Route under Regulation 6(2))

Companies that do not meet the profitability criteria can still list, but with stricter conditions.

At least 75% of the net offer must be reserved for Qualified Institutional Buyers (QIBs)
Net worth of at least ₹1 crore in the last year
If the company has changed its name in the last year, at least 50% of revenue must come from the business activity reflected in the new name

This route is commonly used by technology and new-age companies that are growing but have not turned profitable yet.

Who Cannot Launch an IPO?

SEBI explicitly bars certain companies from accessing public markets:

Any promoter or director currently barred by SEBI from participating in the capital markets
Companies or promoters declared wilful defaulters by a bank or financial institution
Directors who are designated fugitive economic offenders
Companies with outstanding convertible securities other than ESOPs (this applies specifically to SME IPOs)

SME IPO Eligibility (BSE SME and NSE Emerge)

Companies listed on SME platforms follow a separate framework:

Post-issue paid-up capital between ₹1 crore and ₹25 crore
Net worth of at least ₹1.5 crore
Net tangible assets of at least ₹3 crore
Minimum 3 years of operational history
No loan defaults with any bank or NBFC in the last 3 years
EBITDA of at least ₹1 crore in any 2 of the last 3 financial years
The DRHP must be made available for a 21-day public comment period before the company can proceed

How the IPO Process Works: Step by Step

Step 1: Filing the DRHP

The company files a Draft Red Herring Prospectus with SEBI. As of March 2026, the company must also file a Draft Abridged Prospectus (DAP) alongside the DRHP. The DAP follows a standardised 12-part structure covering the business overview, promoter details, objects of the issue, financial highlights, key performance indicators, top risk factors, contingent liabilities, related party transactions, and outstanding litigations. Application forms are required to carry a QR code that links directly to the RHP, DAP, and price band advertisement.

Step 2: SEBI Review

SEBI reviews the DRHP and can ask for clarifications or additional disclosures. SEBI’s review confirms that adequate information has been disclosed. It does not validate whether the company is a good investment.

Step 3: Price Band Announcement

The company sets a floor price and a cap price. SEBI rules require that the cap price cannot exceed 120% of the floor price, meaning there must be at least a 5% gap between the two.

Step 4: Subscription Window

The IPO remains open for bids for typically 3 to 5 working days. No money leaves your account during this period.

Step 5: Allotment and Listing

In oversubscribed IPOs, retail allotment happens through a computerised lottery where each retail applicant receives one lot or nothing. The company lists on the stock exchange approximately 6 working days after the IPO closes.

How Does SEBI's New IPO Disclosure Framework Protect Retail Investors?

The Draft Abridged Prospectus isn’t just a shorter version of the DRHP, it changes when and how retail investors actually get useful information, and that timing shift is the real protection built into this rule.

It arrives early enough to actually matter. Previously, the abridged prospectus was only made available at the application stage, by the time you saw it, you’d already decided to apply, and most of the real decision-making had happened based on the lengthy, complex offer document (or worse, a broker’s summary of it). The DAP moves this same investor-facing summary to the DRHP stage instead, so you get the concise version before you’ve committed to anything, not after.
It’s under a strict word limit, on purpose. SEBI didn’t just ask companies to write a shorter document — it capped specific sections: the business summary is limited to 500 words, the industry overview to 250 words, each promoter’s background to 100 words, and each fund-use objective to 100 words in table form. These limits exist specifically to stop companies from burying material information in vague, promotional language. A company simply cannot use 3,000 words of “growth trajectory” language to describe how it’s actually going to spend your money.
It’s built for how you actually read it. Every application form and price band advertisement is now required to carry a QR code linking directly to the RHP, the abridged prospectus, and the price band details. SEBI’s own reasoning here is straightforward: most investors interact with IPO information on their phones, and a scan-to-access document is far more likely to get read than a 300-page PDF buried on an exchange website. It also cuts down on relying on forwarded broker summaries or social media posts as a substitute for the real document.

What this means for you in practice: the 12-part DAP structure (business overview, risk factors, fund use, promoter details, financials, and more) is designed to be the one document you actually read in full before applying — not the DRHP, and not a WhatsApp summary. Scan the QR code on the application form, read the top risk factors and fund-use table specifically, and you’ve covered the two sections most likely to change your decision, in a fraction of the time the full DRHP would take.

Investor Categories and Quota Allocation

SEBI prescribes fixed allocations for each type of investor in a book-built IPO:

Investor Category	Who Qualifies	SEBI Quota
Retail Individual Investors (RII)	Individuals applying for up to ₹2 lakh	35% of net offer
Non-Institutional Investors (HNI)	Individuals applying for more than ₹2 lakh	15% of net offer
Qualified Institutional Buyers (QIB)	Mutual funds, FIIs, insurance companies, banks	50% of the net offer

Under the QIB Route (Route 2), at least 75% of the net offer must go to QIBs. If the QIB quota is not subscribed in such an issue, the IPO can be cancelled.

SME IPO investor categories changed from July 1, 2025. NSE and BSE replaced the Retail Individual Investor category entirely. The new structure is:

Category	Minimum Application	Maximum Application
Individual Investor (New)	2 lots (above ₹2 lakh)	No limit
Employees or Shareholders	2 lots (above ₹2 lakh)	Up to ₹5 lakh
NIIs and QIBs	2 lots (above ₹2 lakh)	No limit

This means there is no low-ticket retail entry point in SME IPOs anymore. An investor applying for an SME IPO must commit more than ₹2 lakh per application.

How to Apply for an IPO: ASBA and UPI Rules

When you apply for an IPO, your money is not debited from your account. SEBI’s mandatory application mechanism is called ASBA (Application Supported by Blocked Amount). Your bank blocks the application amount, but the funds stay in your account and continue to earn interest. The money is only debited on the date of allotment. If you receive no shares, the block is released.

Key rules:

Applications up to ₹5 lakh from retail investors can be submitted through the UPI mandate process. You approve the block request through your UPI app.
Applications above ₹5 lakh must go through the ASBA route directly via your bank’s net banking or at a Self-Certified Syndicate Bank (SCSB) branch.
Only one application per PAN is permitted. Multiple applications using the same PAN result in all of them being rejected, regardless of which account they come from.
You must hold shares in dematerialised form and have a valid demat account linked to your application.

Lock-In Period Rules: What Changed in 2025 and 2026

Lock-in periods stop promoters and early investors from selling shares immediately after listing.

Shareholder Type	Lock-In Duration
Promoters (up to 20% of post-issue capital)	18 months from the allotment date
Promoters (shares above 20% of post-issue capital)	6 months from allotment date
Anchor investors (50% of allotted shares)	30 days from allotment date
Anchor investors (remaining 50%)	90 days from allotment date
Non-promoter pre-IPO shareholders	6 months from allotment date
SME promoters (minimum 20% post-issue capital)	5 years from the allotment date
SME promoters (excess holding above minimum)	Phased release: 50% of excess holdings are released after lock-in in stages

The SME promoter lock-in was increased from 3 years to 5 years as per SEBI’s January 2025 board decision, making it far stricter than mainboard IPOs. The phased release provision for excess holdings was also introduced at the same time, meaning even the holding above the minimum is not released all at once.

March 2026 update: SEBI amended the ICDR Regulations to enforce lock-in at the depository system level. Earlier, lock-in compliance relied on contractual arrangements, which created gaps when shares were pledged. Under the new framework, the depository marks shares as “non-transferable” directly in the system. This restriction continues even if the pledge is invoked or released during the lock-in period.

Rules on Use of IPO Proceeds

Where a company plans to spend your money is one of the most important things to check before applying.

General Corporate Purpose (GCP) cap: Companies can allocate a maximum of ₹10 crore or 15% of the issue size, whichever is lower, to general corporate purposes. This was reduced from the earlier 25% to prevent vague fund allocation.
No promoter loan repayments: IPO proceeds cannot be used to repay loans taken from promoters, their family members, or group companies.
Monitoring agency: Any IPO raising more than ₹50 crore must appoint an independent monitoring agency to track how funds are used. For smaller IPOs, the statutory auditor must certify fund usage quarterly.
OFS cap in SME IPOs: The Offer for Sale component in an SME IPO cannot exceed 20% of the total issue size. Individual selling shareholders cannot sell more than 50% of their existing holding via OFS.

A Practical Example: Reading an IPO Through These Rules

A logistics company plans to raise ₹500 crore through a mainboard IPO. It has reported profits in 4 of the last 5 years, qualifies under Route 1, and files its DRHP.

The company proposes to use ₹300 crore for warehouse expansion, ₹100 crore for fleet addition, ₹60 crore for technology upgrades, and ₹40 crore for general corporate purposes.

Under the GCP cap rule, only ₹10 crore or 15% of ₹500 crore (₹75 crore), whichever is lower, can go toward general corporate purposes. That means the maximum permissible GCP is ₹10 crore. The proposed ₹40 crore allocation for GCP is non-compliant and must be reclassified before SEBI will observe the DRHP.

The promoter holds 32% of post-issue capital after the IPO. The first 20% is locked in for 18 months. The remaining 12% is locked in for 6 months. The promoter cannot exit fully even if the stock performs well on the listing day.

Advantages of These Regulations

The DRHP, DAP, and mandatory disclosures force companies to put their financials, risk factors, and promoter background on record before you invest.
ASBA ensures your money stays in your account and earns interest until you actually receive shares
Lock-in periods, now enforced at the depository level since March 2026, prevent insiders from dumping shares immediately after listing.
The GCP cap and fund-use monitoring reduce the scope for vague or dishonest spending of IPO money.
The eligibility criteria for both mainboard and SME IPOs filter out companies with no financial track record.

Risks and Limitations

SEBI verifies disclosures, not business quality. A company can comply with every rule and still be a poor investment.
Even with the new DAP, the full DRHP remains hundreds of pages long. Most retail investors rely on summaries from brokers or social media.
Anchor investors can still exit 50% of their holding after just 30 days. When large anchor investors sell, the price impact on retail holders can be sharp.
SME IPOs require a minimum application of above ₹2 lakh since July 2025, but they still carry a higher risk due to smaller company size, lower liquidity after listing, and lighter post-listing oversight compared to main board companies.
The lottery system in the oversubscribed retail allotment means you may not receive shares even after blocking your funds for 6 to 8 days.

Mainboard IPO vs SME IPO: Key Differences

Parameter	Mainboard IPO	SME IPO
Post-issue paid-up capital	₹10 crore or more	₹1 crore to ₹25 crore
Listing exchange	NSE or BSE	NSE Emerge or BSE SME
Eligibility framework	Route 1 or Route 2	Separate SME norms
Promoter lock-in	18 months (up to 20%)	5 years (minimum 20%)
Retail investor category	Yes, up to ₹2 lakh	Removed from July 2025
Minimum SME application	Not applicable	Above ₹2 lakh (2 lots)
DRHP public comment period	Standard SEBI review	21 days of public comment
OFS cap	No specific cap	20% of the total issue size
QIB reservation (Route 2)	75% of the net offer	50% of the net offer
Monitoring agency (above ₹50 crore)	Mandatory	Statutory auditor certificate
Minimum allottees	1,000	200

Common Mistakes to Avoid

Not reading the DRHP risk factors section. Every DRHP dedicates a full section to what could go wrong with the business. Skipping this is the most avoidable mistake retail investors make.
Treating high subscription as a signal to buy. A 300x subscribed IPO can still list at a loss. Subscription tells you about demand, not about whether the company is fairly priced.
Applying with multiple PANs or family accounts to increase allotment odds. SEBI tracks PAN-level applications. Multiple bids from the same PAN or from the same bank account result in rejection of every application linked to it.
Ignoring the OFS versus fresh issue split. If 80% of the IPO is an OFS, the company receives no money at all. Existing shareholders are exiting. Understanding this split tells you who actually benefits from the IPO.
Assuming the GCP cap leaves room for vague spending. Even with the reduced 15% or ₹10 crore cap, some companies max it out without specifying how the money will be used. Any IPO where the objects of the issue are described in vague terms deserves more scrutiny, not less.

Who Should Invest in IPOs?

IPOs are a reasonable fit for investors who:

Have read at least the financials, risk factors, and objects of the issue sections in the DRHP
Are comfortable with uncertainty around allotment and listing day price movement
Are willing to hold the stock for at least 6 to 12 months if the listing does not go as expected
Understand whether the IPO is a fresh issue or an OFS before applying

IPOs are less suitable for investors who:

Need their money back within a week, and cannot afford to have funds blocked for 6 to 8 days per application
Are you making decisions purely based on subscription numbers, grey market premiums, or social media tips
Are you looking at SME IPOs without understanding that the minimum application is now above ₹2 lakh, and post-listing liquidity is limited

Conclusion

SEBI IPO regulations sit between you and a company asking for your money. The 2025 and 2026 ICDR amendments have strengthened several areas, SME promoter lock-ins are now 5 years; lock-in enforcement moved to the depository system level; the abridged prospectus must be filed alongside the DRHP and is now standardised; and fund use restrictions are tighter than before.

Reading the DAP, checking who benefits from the IPO (fresh issue vs OFS), and verifying the fund utilisation plan takes less than 20 minutes. That is time that will serve you far better than any subscription alert.