Every time a big-name company announces its IPO, the same wave of questions follows: how do I actually apply? Will my money get stuck if I don’t get allotted shares?
What’s this “UPI mandate” everyone keeps mentioning? If you’ve felt that mix of excitement and confusion, this guide is built to clear it all up.
Applying for an IPO in India today is genuinely simple — often just a few taps in your broker’s app — but understanding what’s happening behind the scenes helps you apply correctly, avoid rejection, and know exactly what to expect at every stage.
Let’s walk through the entire process, end to end.
What is an IPO and Why Do Companies Go Public?
An IPO (Initial Public Offering) is the process through which a private company offers its shares to the public for the first time, transforming it into a publicly listed company on the stock exchange.
Once listed, anyone with a demat account can buy and sell that company’s shares on NSE or BSE, just like any other listed stock.
Companies go public for several reasons: to raise capital for expansion, to give early investors and founders an exit route, to improve brand visibility and credibility, or to make employee stock ownership plans liquid.
For investors, IPOs offer a chance to buy into a company at its very first public price point — before it’s had a chance to trade freely on the open market.
Types of IPO Investors — Retail, NII & QIB Explained
SEBI categorises IPO applicants into distinct investor buckets, each with its own investment limits and allotment rules:
| Category | Who It’s For | Investment Limit | Allotment Method |
| Retail Individual Investor (RII) | Individual investors applying in smaller amounts | Up to Rs 2 lakh | Lottery (if oversubscribed) or full allotment |
| Non-Institutional Investor (NII/HNI) | Individuals or entities investing larger sums | Above Rs 2 lakh (no upper cap) | Proportionate / pro-rata allotment |
| Qualified Institutional Buyer (QIB) | Mutual funds, banks, insurance companies, FIIs | Institutional-scale investment | Proportionate allotment |
Most first-time individual investors apply under the Retail category, which is designed to be accessible— with a lower minimum investment and a fairer, lottery-based allotment system when demand is high —aimed at giving as many small investors as possible a shot at getting shares.
What is ASBA and How Does It Work?
ASBA (Application Supported by Blocked Amount) is the SEBI-mandated method for applying to IPOs in India, designed to protect your money.
Here’s the key idea: when you apply for an IPO, your application amount isn’t debited from your bank account—it’s simply blocked (frozen) until the allotment process is complete.
This matters for two reasons:
- Your money keeps earning interest in your bank account while it’s blocked, unlike the older system where funds were fully debited and refunded later.
- If you don’t get allotted shares, the block is released automatically — no waiting for a manual refund to hit your account days later.
Only if you actually receive an allotment does the blocked amount get debited — and only for the exact number of shares you were allotted, not necessarily your full applied amount.
How to Apply for an IPO via UPI — Step-by-Step
For retail investors applying through a broker, the UPI-based ASBA process has made IPO applications almost entirely app-based. Here’s how it works:
Step 1: Log in to your broker’s app or platform where you hold your demat and trading account, and navigate to the “IPO” section.
Step 2: Select the IPO you want to apply for from the list of currently open issues.
Step 3: Enter your bid details—the number of lots you want to apply for and your bid price (or select “Cut-off Price” to bid at the final issue price, which is generally recommended for retail investors to maximise allotment chances).
Step 4: Enter your UPI ID linked to the bank account you want to block funds in. This must be registered under the same PAN as your demat account.
Step 5: Approve the UPI mandate request that appears in your UPI app (Google Pay, PhonePe, BHIM, or your bank’s app) — you typically have until 5:00 PM on the closing day to approve this.
Mandates approved after this cut-off are automatically rejected, so don’t wait until the last minute, especially on the final day of the issue.
Step 6: Wait for the allotment outcome, which is typically finalised the working day after the issue closes.
The UPI route currently has an application limit of ₹5 lakh per transaction, which comfortably covers virtually all retail and smaller NII applications.
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IPO Timeline — From Opening Date to Listing (T+3 Explained)
SEBI has significantly compressed the IPO timeline in recent years, and the current framework — commonly called T+3 — means shares list on the exchange just three working days after the issue closes.
| Day | What Happens |
| Day 1-3 (or up to Day 5) | IPO subscription window is open; investors apply via ASBA/UPI |
| T (Issue Closing Day) | Application window closes; late UPI mandates auto-rejected after 5:00 PM |
| T+1 | Basis of allotment finalised by the registrar |
| T+1 to T+2 | Shares credited to successful applicants’ demat accounts; refunds/unblocking processed for others |
| T+3 | Shares officially list and begin trading on NSE/BSE |
This “T” refers to the issue closing date — not the opening date — so the entire process, from application close to trading debut, now takes just three working days.
This is a meaningful improvement from the slower, multi-week timelines of the past, giving investors much faster access to both their shares (if allotted) or their funds (if not).
How IPO Allotment Works — Pro-Rata vs Lottery System
Once the IPO closes, a SEBI-registered Registrar (such as Link Intime, KFintech, or Bigshare) processes all applications and determines the “basis of allotment.” How this works depends on the level of demand:
- If the retail category is undersubscribed or only mildly oversubscribed, allotment happens on a straightforward proportionate basis, and most applicants receive at least the number of lots they applied for.
- If the retail category is heavily oversubscribed (a very common scenario for popular IPOs), a computerised lottery system kicks in. The registrar’s system is specifically designed to allot at least one lot to the maximum possible number of eligible applicants, rather than favouring investors who applied for more lots — meaning applying for extra lots as a retail investor generally doesn’t meaningfully improve your odds.
- NII and QIB categories are typically allotted on a proportionate basis relative to the shares reserved for their category.
The registrar publishes the detailed basis of allotment on its website, which you can check directly using your application number or PAN.
What Happens If You Don’t Get Allotment?
If you don’t receive an allotment, here’s what happens to your blocked funds:
ASBA-blocked amounts are typically released within 24–48 hours of the allotment being finalised — much faster than the older refund-based system, where money was fully debited and then refunded days later.
You don’t need to do anything manually — the unblocking happens automatically through your bank once the registrar finalises the non-allotment.
If the release is delayed beyond the prescribed timeline, SEBI rules require the company to pay you 15% annual interest on the delayed amount — a real, enforceable penalty designed to discourage delays.
If your funds still aren’t released after several working days, you can contact your bank first, then the registrar, and SEBI directly as a last resort.
Best Brokers for Applying to IPOs — Compared
Since IPO applications are now almost entirely done through broker apps, your broker’s IPO interface genuinely matters — a clunky application flow can cost you a valid application if you’re not careful near the deadline.
| Broker | IPO Application Experience | Cut-off Price Option | Application Modification Allowed |
| Zerodha | Simple, integrated within Console/Kite | Yes | Yes, before closing date |
| Groww | Very beginner-friendly IPO section within main app | Yes | Yes, before closing date |
| Upstox | Modern interface, integrated UPI flow | Yes | Yes, before closing date |
| Angel One | IPO section with additional research/recommendation content | Yes | Yes, before closing date |
All four major brokers now support UPI-based ASBA applications directly within their apps, so the underlying process is fundamentally the same regardless of which one you use.
The differences come down to interface clarity and how easily you can track your application status and allotment outcome. For a deeper comparison of these platforms overall, see our guide on Zerodha vs Groww vs Upstox vs Angel One.
Common Mistakes to Avoid While Applying
Waiting until the last hour on closing day — UPI mandate approval has a hard 5:00 PM cut-off, and last-minute technical issues (app slowdowns, bank server delays) are common on high-demand IPO closing days.
Applying multiple times under the same PAN — even across different brokers, this results in automatic rejection of all your applications for that IPO, since SEBI enforces a strict “one PAN, one application” rule.
Not selecting “Cut-off Price” as a retail investor — bidding below the eventual cut-off price can get your entire application rejected if the final price discovery lands above your bid.
Using a UPI ID not linked to the same PAN as your demat account — a common cause of mandate rejection that catches investors who accidentally use a family member’s UPI ID.
Ignoring the mandate notification in your UPI app — the application isn’t complete until you actively approve the block request; simply submitting the bid on your broker’s app isn’t enough.
Applying purely based on Grey Market Premium (GMP) hype without understanding the company’s actual business and financials — GMP is an unofficial, informal indicator and can be misleading, especially for smaller or SME IPOs.
Should You Sell on Listing Day or Hold?
This is genuinely a personal decision, and there’s no universally “correct” answer — but here’s a framework for thinking it through:
- If you applied purely for a quick listing gain and the stock lists at a solid premium to your issue price, taking that profit is a perfectly valid strategy — many retail investors treat IPO applications this way.
- If you believe in the company’s long-term fundamentals, listing-day price movement (which can be driven heavily by short-term sentiment and speculation) may not be the best signal to base a hold-or-sell decision on.
- Remember the tax angle: if you sell shares allotted through an IPO within 12 months, the gain is taxed as short-term capital gains (STCG) at 20%; holding beyond 12 months qualifies for the more favourable long-term capital gains (LTCG) treatment. Our detailed STCG and LTCG tax guide covers the exact rates and rules.
- Volatility is often highest in the first few days of listing — if you’re unsure, there’s no rule that says you must decide on day one; you can choose to hold and reassess once initial listing volatility settles.
FAQs related to IPO Investing in India
Check out various FAQs on IPO Investment, how to apply for an IPO & IPO allotment process.
Do I need a demat account to apply for an IPO?
Yes. A demat account is mandatory to apply for and hold IPO shares, since allotted shares are credited electronically. If you don’t have one yet, see our guide on how to open a demat and trading account.
Is my money deducted immediately when I apply for an IPO?
No. Under the ASBA process, your application amount is only blocked (not debited) in your bank account. It’s debited only if you’re actually allotted shares, and only for the allotted amount.
Can I apply for the same IPO from two different broker accounts?
No. SEBI’s rules link applications to your PAN, not your broker account. Multiple applications under the same PAN for the same IPO — even across different brokers — will all be rejected.
What is the UPI mandate approval deadline?
You must approve the UPI mandate request in your payment app by 5:00 PM on the IPO’s closing day. Mandates approved after this cut-off are automatically rejected.
How soon will I know if I got IPO shares?
The basis of allotment is typically finalised on T+1 (one working day after the issue closes), with shares credited to demat accounts or funds unblocked shortly after, and listing occurring on T+3.
Does applying for more lots increase my chances of allotment in an oversubscribed retail category?
Not significantly. When the retail category is heavily oversubscribed, the computerised lottery system is designed to allot at least one lot to as many distinct applicants as possible, rather than favouring larger applications — so applying for one lot versus several doesn’t meaningfully change your odds of winning the lottery.
What happens to IPO shares I don’t sell on listing day?
They simply remain in your demat account like any other stock holding — there’s no requirement to sell on listing day, and you can hold, add to, or exit the position whenever you choose, based on your own investment view.
Final Thoughts
IPO investing in India has become remarkably streamlined — a UPI-based ASBA application, a T+3 listing timeline, and automatic fund protection if you don’t get allotted shares all combine to make the process both fast and low-risk from a “stuck money” perspective.
The real decision-making still lies with you: choosing which IPOs to apply for based on the company’s fundamentals, not just grey market hype, and deciding thoughtfully whether to book listing-day gains or hold for the long term.
Before your next IPO application, make sure your demat account and UPI ID are correctly linked to the same PAN, and always double-check your mandate approval well before the 5:00 PM cut-off on closing day.