IPO investing in India means applying for shares when a company lists on the stock exchange for the first time. This guide explains how an IPO works, how to apply through ASBA and UPI, how allotment is decided, what the grey market premium (GMP) really tells you, and how to judge whether an issue deserves your money.
IPOs attract attention because of listing-day gains in hot markets. But listing gains are not guaranteed, and many issues list below their price. A clear process protects you from hype.
How IPO Investing in India Works
An initial public offering (IPO) is when a company offers shares to the public and lists them on NSE, BSE or both. The shares on offer can be:
- Fresh issue: new shares. The money goes to the company, often for growth or debt repayment.
- Offer for sale (OFS): existing shareholders such as promoters or private equity funds sell their shares. The money goes to them, not the company.
Checking the split between fresh issue and OFS is one of the first things to do. A large OFS is not automatically bad, but it tells you who is cashing out.
The documents that matter
Companies file a Draft Red Herring Prospectus (DRHP) with SEBI, then a Red Herring Prospectus (RHP) before the issue opens. These documents are public on the SEBI website and the exchange websites. They contain the business description, risk factors, financial statements, objects of the issue and promoter details.
Book Building, Price Bands and Lots
Most mainboard IPOs use book building. The company announces a price band, and investors bid within it. The final issue price is discovered from demand.
You apply in lots. The lot size is fixed in the RHP, and the minimum application is one lot. Retail investors who bid at the “cut-off” price agree to pay whatever final price is set within the band.
Investor categories
- QIB (Qualified Institutional Buyers): mutual funds, insurers, banks and foreign portfolio investors. Anchor investors come from this group and bid a day before the issue opens.
- NII (Non-Institutional Investors), also called HNI: individuals and entities applying above ₹2 lakh. SEBI splits this into small NII (₹2 lakh to ₹10 lakh, one-third of the NII portion) and big NII (above ₹10 lakh, two-thirds), under SEBI’s 2022 ICDR amendment.
- RII (Retail Individual Investors): individuals applying for up to ₹2 lakh.
- Employee and shareholder quotas: some issues reserve shares for employees or for shareholders of a listed parent company.
The exact reservation percentages depend on the issue and are stated in the RHP.
How to Apply for an IPO
Every application in India goes through ASBA (Application Supported by Blocked Amount). Your money is blocked in your bank account, not debited, until allotment.
Through your broker app with UPI
- Open the IPO section in your broker’s app (Zerodha, Groww and others offer this).
- Select the issue, enter the number of lots and your bid price, or tick cut-off.
- Enter your UPI ID.
- Approve the mandate request in your UPI app before the deadline.
The application is not complete until you approve the UPI mandate. Missing this step is one of the most common reasons applications fail.
Through net banking
Most banks offer an ASBA option in net banking. You apply directly, and the bank blocks the amount.
Applying in the HNI category
Applications above ₹2 lakh go into the NII category. UPI can be used up to the limit set by SEBI and NPCI for IPO mandates; larger bids generally go through net-banking ASBA. Check the current limit with your bank or broker.
Allotment and Listing Timeline
SEBI moved IPO listings to a T+3 timeline, mandatory for issues opening on or after December 1, 2023 (SEBI circular of August 9, 2023). That means shares list on the third working day after the issue closes (T).
- T+1: basis of allotment is finalised.
- T+2: funds are debited or unblocked, and shares are credited to demat accounts.
- T+3: shares list and trading begins.
How retail allotment works when oversubscribed
If the retail portion is oversubscribed, allotment is by lottery. SEBI’s rules aim to give as many retail applicants as possible at least one lot. Applying for more lots in the retail category does not materially raise your chance of getting one lot. Multiple applications under the same PAN are rejected.
How to check IPO allotment status
You can check on the registrar’s website (the RHP names the registrar) or on the BSE and NSE allotment pages, using your PAN or application number.
What Is GMP in IPO, and How Reliable Is It?
The grey market premium is the price at which IPO shares are informally traded before listing, above or below the issue price. If an issue is priced at ₹100 and the GMP is quoted at ₹20, the grey market expects a listing around ₹120.
Treat GMP with caution:
- The grey market is unofficial and unregulated. SEBI does not recognise it.
- GMP can change sharply within hours and is easy to influence.
- It reflects short-term sentiment, not business value.
Use GMP as a sentiment gauge at most. Never apply only because GMP is high.
How to Evaluate an IPO
Business and industry
What does the company sell, to whom, and why will it win? Read the industry section of the RHP and the risk factors. The risk factors often reveal more than the marketing material.
Financials
Look at at least three years of revenue, profit, margins, cash flow and debt. Are profits backed by operating cash flow? Is growth steady or concentrated in the year before the IPO? Our guide on how to analyse quarterly results explains the key ratios.
Valuation
Compare the price-to-earnings ratio and other multiples with listed peers. The RHP includes a “basis for issue price” section with peer comparisons.
Use of proceeds
Fresh capital for expansion or debt reduction is easier to judge than vague “general corporate purposes”.
Subscription data
Exchanges publish live subscription figures by category. Strong QIB demand is often watched as a sign of institutional interest, but it is not a guarantee.
SME IPOs: Higher Risk, Different Rules
SME IPOs list on the BSE SME and NSE Emerge platforms. They are smaller companies with lower disclosure thresholds, larger minimum application sizes and often thin trading after listing.
SEBI has tightened SME IPO rules, most recently in its March 2025 ICDR amendment, which added profitability conditions and capped offers for sale. Liquidity can be poor, so exiting a position may be hard. Treat SME issues as high risk.
Common IPO Mistakes
- Applying because of social media buzz or GMP alone.
- Not reading the risk factors.
- Forgetting to approve the UPI mandate.
- Selling a good business on listing day out of habit, or holding a weak one out of hope.
- Putting too much capital into one issue.
The same risk management principles that apply to trading apply here: size every bet so one bad outcome does not hurt you badly.
Reading the RHP in 20 Minutes
The prospectus can run to hundreds of pages. You do not need to read all of it. Focus on these sections:
- Offer document summary: issue size, fresh issue vs OFS, and selling shareholders.
- Risk factors: the company’s own list of what could go wrong. Look for customer concentration, litigation and regulatory risks.
- Objects of the offer: how the fresh money will be used.
- Basis for offer price: peer comparison and key ratios.
- Restated financial statements: revenue, profit, cash flow and debt.
- Outstanding litigation: cases against the company, promoters and directors.
Also note the anchor lock-in. Part of anchor investors’ shares are locked in for a period after listing, and the end of a lock-in can bring selling pressure.
After Listing: What to Do
Decide your plan before listing day. If you applied for listing gains, set a rule for exit. If you applied as a long-term investor, judge the business after a few quarterly results, not on the first day’s price.
Newly listed stocks can be volatile. Pre-open price discovery on listing day sets the opening price, and moves after that can be sharp in either direction.
Key Takeaways
- IPO investing in India runs entirely through ASBA, so your money stays in your bank account until allotment.
- Read the RHP’s risk factors, financials and objects of the issue before you apply, not just the news coverage.
- Know whether the issue is mainly a fresh issue or an offer for sale, and who is selling.
- In oversubscribed issues, retail allotment is a lottery, and one application per PAN is allowed.
- GMP is an unofficial sentiment gauge. It is not a price forecast and it is not regulated.
- SME IPOs carry higher risk and often poor liquidity after listing.
- Compare valuation with listed peers. A great company at a stretched price can still be a poor investment.
- Decide before listing day whether you are a listing-gain applicant or a long-term holder, and stick to that plan.
Frequently Asked Questions
Can I apply for an IPO without a demat account?
No. You need a demat account to receive allotted shares.
Are listing gains taxed?
Listed shares held for 12 months or less are taxed as short-term capital gains, per the Income Tax Department. Check current rates with a tax adviser, as they change with the Union Budget.
Does applying at cut-off help?
For retail investors, yes. It ensures your bid is valid at the final price.
Stay Updated
Follow our IPOs Updates section for upcoming issues, subscription status, allotment guides and individual IPO reviews. For broader market context, see Stock Market Today India.
This guide is for education only and is not investment advice.