IPO Explained: What It Is and How to Apply in India

What is an IPO?

IPO stands for Initial Public Offering. It is the first time a private company sells its shares to the public and lists on a stock exchange like the NSE or BSE. After listing, those shares trade freely and anyone can buy or sell them.

An IPO raises money in two ways, and many IPOs mix both:

• Fresh issue - the company creates new shares and sells them, and this money goes into the company for growth, repaying debt or expansion.
• Offer for sale (OFS) - existing shareholders such as founders or early investors sell some of their shares, and this money goes to them, not the company.

Why do companies launch IPOs?

• To raise capital for expansion, new capacity, technology or paying off loans.
• To let early investors and founders sell part of their holding.
• To gain visibility and credibility as a listed, closely-watched company.
• To use listed shares for future acquisitions or employee stock options.

Mainboard IPO vs SME IPO

India has two kinds of IPOs. Mainboard IPOs are from larger, established companies, list on the NSE/BSE main board, and have a small minimum application of roughly ₹14,000-15,000 (one lot). SME IPOs are from smaller companies, list on NSE Emerge or BSE SME, usually need a much larger minimum (often ₹1 lakh or more), and tend to be less liquid and more volatile.

SME IPOs sometimes show eye-catching gains, which draws crowds, but they are riskier and SEBI has been tightening their rules. They are not a beginner-friendly starting point, despite the hype.

What you need before you can apply

• A PAN card - mandatory for every application.
• A demat account - where allotted shares are credited (any SEBI-registered broker).
• A bank account with UPI or net banking - used to block the application amount.

One important detail: the PAN linked to your bank account and your demat account must be the same, or the application is rejected automatically. Also, one PAN can submit only one application per IPO; multiple applications on the same PAN get rejected.

How to apply: ASBA and UPI

Every IPO application in India runs on ASBA - Application Supported by Blocked Amount. When you apply, the money is not debited; it is only blocked in your bank account and keeps earning your normal savings interest. If you get shares, that amount is debited; if you do not, the block is simply released. You never hand the money over in advance.

Most retail investors apply through the UPI route: in your broker app, open the IPO, enter the number of lots and the cut-off price, enter your UPI ID and submit. A mandate request comes to your UPI app - approve it to block the amount. The UPI limit is ₹5 lakh per transaction and is meant for retail investors. Approve the mandate within the time window shown (often around 30 minutes, and before the issue closes), or the application may not be processed.

You can also apply directly from your bank's net-banking ASBA section, which is common for larger applications above the UPI limit.

Investor categories: retail, HNI and QIB

Every IPO splits shares across categories, and allotment rules differ by category:

• Retail (RII) - application up to ₹2 lakh. If oversubscribed, allotment is a lottery, with at most one lot per applicant.
• Small HNI (sHNI) - ₹2 lakh to ₹10 lakh.
• Big HNI (bHNI) - above ₹10 lakh.
• QIB - institutions such as banks, mutual funds and foreign investors.
• Anchor investors - large institutions allotted a day before the issue, with a lock-in period.

A key point: in the retail category, applying for more lots does not improve your odds when an IPO is oversubscribed. The minimum lot is allotted to as many applicants as possible by a lottery. One person, one shot.

Lots, price band and the allotment process

Shares are applied for in fixed bundles called lots, not single shares. The company sets a price band (for example ₹100 to ₹105) and a lot size. Retail investors usually pick the 'cut-off price', agreeing to pay whatever final price is set within the band.

The process then runs in clear steps: you bid during the open window (about three days); your money is blocked via UPI or ASBA; shares are allotted after the issue closes; any unused blocked amount is released; and the shares are credited to your demat and start trading on listing day. Under current SEBI norms, shares must list within 3 working days of the issue closing (the T+3 timeline), so allotment, refunds and listing are all faster than before.

How to check your IPO allotment

• The registrar's website (such as Link Intime or KFin Technologies) using your PAN or application number.
• The NSE or BSE IPO allotment pages.
• Your broker app, which shows the result and credits shares on listing day.

What is GMP (Grey Market Premium)?

GMP, or Grey Market Premium, is the extra price at which an IPO's shares are unofficially traded before they list. If the IPO price is ₹100 and the GMP is ₹50, the grey market is implying a listing around ₹150.

Treat GMP with real caution. The grey market operates entirely outside SEBI's regulatory framework. GMP is speculative, can be manipulated, and frequently does not match the actual listing price. It is a rough sentiment signal at best, never a promise of listing gains. Do not apply to an IPO only because the GMP looks high.

The honest risks of IPO investing

• Listing can be below the issue price - 'listing gain' is never guaranteed, and many IPOs list flat or in the red.
• Hype can drive overvaluation, leaving little upside and plenty of downside if sentiment turns.
• A freshly listed company has a short public track record, so there is less data to judge it.
• GMP and tips mislead; decisions made on grey-market chatter are gambling, not investing.
• Anchor lock-ins expire after a period, and the resulting selling can pressure the price.
• SME IPOs amplify all of this with smaller size, thinner liquidity and higher volatility.

Listing gains vs long-term investing

Be honest about why you are applying, because the two mindsets are very different:

• Listing-gain mindset - you hope to sell on day one above the issue price. This is short-term and speculative, and the GMP you relied on can be wrong.
• Long-term mindset - you have read the offer document, understand the business, and would be happy to own it for years regardless of the listing-day move.

Common mistakes beginners make

• Applying only because the GMP is high or a tip said so.
• Believing more lots improve retail allotment odds (they do not).
• Using money they cannot afford to have blocked for a few days.
• Treating every IPO as guaranteed listing-gain money.
• Ignoring the offer document and the company's actual financials.
• Jumping into SME IPOs early, drawn by past gains, without understanding the risks.
• Submitting multiple applications on the same PAN, which all get rejected.

The bottom line

An IPO is simply a company going public for the first time, and applying is a smooth, well-regulated process: ASBA or UPI blocks your money, a transparent allotment follows, and shares list within a few days. The mechanics are the easy part. The hard part is temperament. IPOs are wrapped in hype, GMP chatter and listing-gain dreams, and that is exactly where beginners lose money. Treat each IPO as a real business you are part-owning, read the offer document, ignore the grey-market noise, and only apply with money you are comfortable committing.