Between 2021 and 2025, Indian primary markets raised over ₹3.5 lakh crore through IPOs. Some of these — Tata Technologies, Jio Financial Services — created genuine wealth for allotted investors. Many others, especially in the SME segment, destroyed capital within weeks of listing. The difference between the two outcomes comes down to evaluation discipline, not luck.
This guide walks through the complete IPO lifecycle in India, SEBI’s regulatory framework, the ASBA application process, and a practical evaluation framework retail investors can use before hitting “Apply.”
How an IPO works in India — the full lifecycle
An IPO (Initial Public Offering) is the process by which a private company sells shares to the public for the first time. In India, SEBI (Securities and Exchange Board of India) regulates every step. Here’s the lifecycle:
- Board approval & appointment of intermediaries: The company’s board resolves to go public and appoints merchant bankers (book running lead managers or BRLMs), a registrar (like Link Intime or KFin Technologies), and legal advisors.
- DRHP filing: The Draft Red Herring Prospectus is filed with SEBI. This is the single most important document for investors. It contains the company’s financials, risk factors, objects of the issue, promoter history, and litigation details. SEBI reviews the DRHP and may raise observations that require amendments.
- SEBI observations: SEBI doesn’t “approve” an IPO — it issues observations. This is a critical distinction. SEBI’s clearance means the disclosure requirements are met, not that the investment is sound. The company has 12 months to launch the IPO after receiving observations.
- RHP & price band: The Red Herring Prospectus (final version) is filed with the ROC. The price band is announced — typically a ₹X to ₹Y range for book-built issues.
- Bidding window (3–5 days): Retail investors, NIIs (Non-Institutional Investors), and QIBs (Qualified Institutional Buyers) place bids through ASBA.
- Allotment & listing: Shares are allotted based on subscription ratios. Listing happens on NSE/BSE, typically 6 trading days after the issue closes.
SEBI regulations every IPO investor must know
SEBI’s ICDR (Issue of Capital and Disclosure Requirements) regulations govern Indian IPOs. The key rules retail investors should know:
- Minimum allotment to retail: At least 35% of the net offer in a book-built issue is reserved for retail individual investors (RIIs) — those applying for up to ₹2 lakh.
- Lot size cap: The minimum lot size must be within the ₹14,000–15,000 range. Maximum retail application is ₹2 lakh.
- Lock-in for promoters: Promoter shareholding has a lock-in of 18 months for the minimum promoter contribution (20%) and 6 months for the excess. Anchor investors have a 90-day lock-in.
- OFS vs fresh issue: Fresh issue raises new capital for the company. Offer For Sale (OFS) means existing shareholders (promoters, PE funds) are selling. High OFS proportion means the company itself gets little capital — existing investors are cashing out.
- Financial eligibility: Mainboard IPOs require minimum net tangible assets of ₹3 crore, operating profit for 3 of the last 5 years, and net worth of ₹1 crore in each of the preceding 3 years. SME IPOs on BSE SME or NSE Emerge have lower thresholds.
ASBA: how the application process actually works
ASBA (Application Supported by Blocked Amount) is the only method for retail IPO applications in India since 2016. Here’s how it works:
- Your bank account is linked to your demat account via your broker’s platform (Zerodha, Groww, Angel One, etc.) or directly through your bank’s net banking portal.
- When you apply, the application amount is blocked (not debited) in your bank account. You continue earning interest on the blocked amount.
- If allotted, only the required amount is debited. If not allotted, the block is released — typically within 1–2 business days of allotment finalization.
- UPI-based applications (via UPI ID linked to bank) have a ₹5 lakh cap per application. For amounts above ₹2 lakh, you move into the NII category.
Pro tip: Apply through the broker’s app for faster processing. UPI mandate approval must happen within the bidding window — missed mandates = rejected applications. Set reminders.
Mainboard vs SME IPOs
India has two IPO tracks with very different risk profiles:
Mainboard IPOs (NSE/BSE main platform)
- Minimum post-issue paid-up capital: ₹10 crore
- Underwritten by SEBI-registered merchant bankers
- Mandatory 3-year audited financials, profitability track record
- Listing day circuit limits: 20% (upper and lower)
- Examples: Tata Technologies, Mankind Pharma, JSW Infrastructure
SME IPOs (BSE SME / NSE Emerge)
- Minimum post-issue paid-up capital: ₹1–25 crore
- Relaxed disclosure requirements, smaller merchant bankers
- No profitability requirement until recently — SEBI tightened norms in 2024
- Listing day: no circuit limits (can swing 100%+ on day one)
- Liquidity is thin; exit can be difficult post-listing
The data is sobering: SEBI’s own analysis shows that while 50%+ of SME IPOs listed at a premium in 2023–2024, a significant fraction fell below issue price within 6 months. The no-circuit-limit rule means a bad SME listing can wipe 40–60% of capital on day one.
Fixed price vs book-building
Two pricing mechanisms exist in Indian IPOs:
- Fixed price: Company sets one price. You take it or leave it. Common in smaller SME IPOs. Simpler but gives the company more pricing power.
- Book-building: Price band (e.g., ₹440–₹462). Investors bid at or above the floor price. Final price is discovered through demand. Most mainboard IPOs use this method. Retail investors should always bid at the cut-off price to maximise allotment chances.
How to evaluate an IPO — the 5-factor framework
1. Business quality and moat
Does the company have a defensible competitive advantage? Market leadership, brand, network effects, regulatory licenses, or switching costs. A company going public to fund expansion of a proven moat is different from one going public because private funding dried up.
2. Financial track record
Look at 3–5 years of revenue growth, operating margins, ROE/ROCE, and free cash flow in the DRHP. Consistent 15%+ revenue CAGR with stable or expanding margins is the sweet spot. Declining margins with accelerating revenue growth suggests the company is buying growth at the cost of profitability.
3. Valuation vs listed peers
The DRHP includes a peer comparison table. Compare the IPO’s P/E, P/B, and EV/EBITDA at the upper price band with listed peers. A 20–30% premium to peers is acceptable for a faster-growing company. A 50%+ premium is aggressive and prices in years of execution.
4. Promoter and management quality
Check promoter background, related-party transactions, and litigation section in the DRHP. Promoters with a track record of building and scaling businesses in the same industry are preferable. Red flags: excessive related-party transactions, promoter pledging, or a history of regulatory action.
5. Use of IPO proceeds
Fresh issue proceeds should primarily fund growth — capex, working capital, debt repayment for capacity expansion. Red flags: “general corporate purposes” consuming more than 25% of fresh issue, or OFS dominating the offer (existing investors exiting rather than company raising growth capital).
Grey market premium (GMP) — signal or noise?
GMP is the unofficial premium at which IPO shares trade in the grey market before listing. A GMP of ₹50 on a ₹500 IPO implies the market expects a 10% listing gain.
Reality check: GMP is a useful directional signal but unreliable for magnitude. It reflects retail sentiment and speculative demand, not fundamental value. GMP can collapse on listing day if institutional selling overwhelms retail buying. Never use GMP as your primary decision factor.
- GMP consistently positive and rising in the last 2 days before listing → likely positive listing
- GMP collapsing from ₹100 to ₹20 in the final day → institutional caution, proceed carefully
- GMP negative → market expects below-issue-price listing; avoid unless you have strong fundamental conviction
Red flags that should make you skip an IPO
- Oversubscription hype without fundamentals: A 50x subscription in the retail category means nothing if the company’s financials don’t justify the valuation. Oversubscription is a measure of demand, not quality.
- Weak or declining financials: Revenue stagnation or decline in the most recent year, margin compression, or negative free cash flow in 2 of the last 3 years.
- Aggressive pricing: P/E at 40–50x for a 10–15% growth company. The company is pricing in perfection — any execution miss post-listing will crush the stock.
- High OFS with minimal fresh issue: When 70%+ of the IPO is OFS, it means promoters and PE investors are exiting. Ask why they want out at this valuation.
- Excessive related-party transactions: Revenue or expenses flowing to promoter-linked entities is a governance red flag. Check the DRHP’s related-party section carefully.
- Short operating history: Companies with less than 3 years of operating history and no clear profitability path are speculative bets, not investments.
Post-listing strategy: hold or flip?
The biggest decision after allotment: sell on listing day or hold for the long term?
The case for selling on listing (flipping)
- You applied purely for the listing gain and the company doesn’t fit your portfolio thesis
- The listing premium exceeds 30–40%, pricing in years of growth
- The broader market is overheated (Nifty P/E above 24–25x)
- Tax impact: listing-day gains are STCG (20% for equity held under 12 months post-Budget 2024)
The case for holding
- The company has a genuine moat and multi-year growth runway
- Valuation at listing price is still reasonable relative to peers
- You would have bought this stock at the current price even without IPO allotment
- Tax benefit: holding for 12+ months converts gains to LTCG (12.5% with ₹1.25 lakh exemption)
The hybrid approach: Sell half on listing day to lock in some profit, hold the rest for 12+ months if the business thesis is intact. This removes the binary decision pressure.
IPO allotment math — setting realistic expectations
In a heavily oversubscribed mainboard IPO (say 10x retail), your odds of getting even one lot are roughly 10%. The allotment process for retail is lottery-based when demand exceeds supply — every valid applicant has an equal chance of getting one lot, regardless of whether they applied for 1 lot or 13 lots.
This means: applying for more lots does not increase your allotment probability in the retail category. One lot application at cut-off price gives you the same odds as a ₹2 lakh application. The extra blocked capital earns nothing.
Optimal strategy: Apply for 1 lot in the retail category. If you have more capital and conviction, apply separately in the NII category (above ₹2 lakh) where allotment is proportional to bid size.
The bottom line
IPO investing in India can be profitable — but only with a disciplined evaluation framework. The median mainboard IPO delivers a 10–15% listing gain, but the distribution is heavily skewed: a few blockbusters mask many duds. SME IPOs have even wider dispersion.
Read the DRHP. Check the financials. Compare valuations. Understand the use of proceeds. Ignore the hype. If you can do these five things consistently, you will outperform 90% of IPO investors who apply based on WhatsApp tips and YouTube thumbnails.