IPO T+3 Listing Timeline: What Happens From Close to Listing

You put in an IPO bid, the issue closes, and then comes the slightly anxious wait. Did I get shares? When does the money come back if I didn’t? When can I sell? For every mainboard issue today, the answer to all three sits inside one short window: the IPO T+3 listing timeline. Shares get listed and start trading on the third working day after the issue closes.

That window is tight, and a lot happens inside it. Banks, the registrar, the exchanges, NPCI and the depositories each have a slot, often down to the hour. Once you know who does what and when, the wait stops being a black box. You’ll also know exactly when it’s reasonable to start worrying about a blocked amount that hasn’t been released.

Where the T+3 rule comes from

The rule is set by SEBI. Its circular dated August 9, 2023 (SEBI/HO/CFD/TPD1/CIR/P/2023/140) cut the time taken to list shares after a public issue closes to 3 working days, down from the earlier requirement of 6 working days. In SEBI’s language, “T” is the issue closing date.

The switch didn’t happen overnight. The circular made T+3 voluntary for public issues opening on or after September 1, 2023, and mandatory for issues opening on or after December 1, 2023. BSE passed the circular on to the market the same day through a notice to listed companies.

Two other points in the circular matter to an ordinary applicant:

• The T+3 listing timeline has to be disclosed in the offer documents.
• The timelines for submitting applications, allotment, unblocking of money and listing must be shown prominently in the issuer’s pre-issue, issue opening and issue closing advertisements.

So you don’t need to guess the dates. They’re printed in the red herring prospectus and the ads. If you’re new to the overall process, our guide to IPO investing in India covers the bigger picture. Here we stay with the four days that follow the close.

T day: the issue closes

T day is busier than it looks from the investor’s side. The annexure to the circular lays out cut-off times for different ways of applying:

The issue itself closes at 4 pm for the QIB and NII categories and at 5 pm for retail and other reserved categories. The UPI mandate acceptance time is also 5 pm on T day. That last one trips people up. If your UPI app shows a mandate request and you approve it after the cut-off, the bid doesn’t count. We’d suggest approving the mandate as soon as it lands rather than leaving it for the evening.

Bid modification and validation of bid details with the depositories run from the issue opening date up to 5 pm on T day. After that, your bid is frozen.

The evening is when the money side gets locked down. Banks send in their “final certificates”, which confirm the amounts blocked:

• For UPI ASBA, the sponsor bank submits before 9:30 pm on T day.
• For direct ASBA, all SCSBs (self-certified syndicate banks) submit before 7:30 pm on T day.
• For syndicate ASBA, the deadline is also before 7:30 pm on T day.

From the investor’s side, T day ends at 5 pm. For the banks and the registrar, the real work is only starting.

T+1: checks, rejections and the basis of allotment

The first working day after the close is about cleaning the data and deciding who gets what. The circular’s annexure sets these deadlines:

• Third-party check on UPI applications: done on a daily basis during the issue and completed before 9:30 am on T+1.
• Third-party check on non-UPI applications: daily, completed before 1 pm on T+1.
• Finalisation of rejections and completion of the basis of allotment: before 6 pm on T+1.
• Approval of the basis of allotment by the stock exchange: before 9 pm on T+1.

The third-party check is where a lot of applications quietly fall over. Under the circular, the registrar matches the PAN in the applicant’s demat account with the PAN in the bank account. If they don’t match, the application is treated as invalid for the basis of allotment. The circular also requires banks, for direct bank ASBA and syndicate ASBA applications, to confirm that the PAN in the application matches the PAN linked to the bank account before blocking any money.

In practice this means a bid placed from a family member’s bank account, or from an account with a different PAN, is likely to be thrown out. Our list of common IPO application rejection reasons goes through the other usual suspects.

The basis of allotment is the formula that splits shares among valid bidders, especially when an issue is oversubscribed. If you want to understand how a lottery among retail bidders actually works, read our explainer on the IPO basis of allotment.

T+2: money moves and shares land in demat accounts

T+2 is the day you actually feel. Money is debited from successful bidders, unblocked for unsuccessful ones, and shares are credited. The annexure’s timings:

• Fund transfer instructions to SCSBs (for bank ASBA and online ASBA) and to the sponsor bank (for UPI ASBA) are issued in separate files for debit and for unblock. Initiation must happen no later than 9:30 am on T+2.
• The fund transfer must be completed before 2 pm on T+2.
• Unblocking must be completed before 4 pm on T+2.
• Corporate action for crediting shares is initiated before 2 pm and completed before 6 pm on T+2.
• The listing application is filed with the stock exchanges and the trading notice issued before 7:30 pm on T+2.
• The allotment advertisement goes up on the websites of the issuer, the merchant banker and the registrar before 9 pm on T+2.

So if you didn’t get shares, the blocked amount should be released by the afternoon of T+2. If you did, the shares should show up in your demat account by that evening. This is also the day most people go looking for their status. Our walk-through on how to check IPO allotment on NSE and BSE shows where to look.

If your money is still blocked after T+2 and you didn’t get an allotment, that’s no longer a normal wait. It’s a delay, and SEBI counts compensation for it from T+3.

That second point comes straight from the circular. It says that compensation to investors for any delay in unblocking ASBA application money will be computed from the T+3 day, modifying SEBI’s earlier circulars of March 16, 2021 and April 20, 2022. If you’re chasing a stuck amount, our piece on the IPO refund process for ASBA explains who to contact first.

T+3: listing day

Trading starts on T+3. That’s the headline of the whole IPO T+3 listing timeline. The newspaper version of the allotment advertisement appears on T+3 but not later than T+4.

Listing day has its own little ritual, with a special pre-open session that sets the opening price. We’ve covered how that discovery works in our article on the IPO listing day pre-open session.

One more piece of plumbing runs in the background. The circular says lock-in of pre-issue shares must be made effective in line with SEBI’s ICDR Regulations, and operationalised under the depositories’ standard operating procedure issued on August 8, 2023. That’s why promoter and pre-IPO holdings don’t hit the market on day one. For the rules on how long those holdings stay frozen, see our note on the IPO lock-in period.

A worked example: counting the working days

Let’s map a made-up issue onto a calendar. These dates are purely hypothetical, and we’re assuming no trading or bank holidays fall inside the window. In real life, always go by the dates in the offer document, because holidays push everything out.

Say an issue opens on a Wednesday and closes the following Monday.

Now shift it. Suppose the same issue closes on a Thursday instead. T+1 is Friday. Saturday and Sunday aren’t working days, so T+2 lands on Monday and listing happens on Tuesday. Same three working days, but five calendar days. This is why “three days” in a casual chat can mislead a first-time applicant.

Now the money side, again with a hypothetical figure. Suppose you applied for 2 lots at ₹14,850 per lot, so ₹29,700 got blocked in your bank account on the day you bid. If you don’t get anything, the full ₹29,700 should be unblocked by 4 pm on T+2. If you get 1 lot, ₹14,850 is debited and the other ₹14,850 is released. Either way, by Wednesday evening in our first calendar, your account should show the final position.

How this compares with what came before

Under the old T+6 requirement, the same Monday close would have meant listing six working days later. On our no-holiday calendar, that’s the Tuesday of the following week rather than Thursday. For an investor whose application got rejected or who got no shares, that’s money stuck in a bank account for several extra working days. Multiply that across the large number of applications that a big issue draws, and you can see why the cut mattered.

Practical checks before your next IPO bid

• Use a bank account and demat account with the same PAN. The registrar’s third-party check matches them, and a mismatch makes the application invalid.
• Approve the UPI mandate early. The cut-off is 5 pm on T day. Don’t leave it to the last hour.
• Know your application route’s cut-off. If you apply through a physical form at a bank, the window closes at 1 pm, not 5 pm.
• Read the dates in the RHP or the issue ads. SEBI requires them to be printed. Holidays shift every step.
• Track T+2 closely. That’s when debit, unblock and share credit all happen. If something is off by the next morning, raise it with your bank or the registrar.

If the ASBA mechanics themselves are still fuzzy, start with our step-by-step guide to the ASBA IPO application process, then come back to this timeline.

The IPO T+3 listing timeline in short

The issue closes on T. Rejections and the basis of allotment are settled on T+1. Money moves and shares hit demat accounts on T+2. Trading starts on T+3. All of it is laid out, hour by hour, in SEBI’s August 2023 circular, and it’s been mandatory for issues opening from December 1, 2023. Once you know the sequence, you know exactly when to check, and when a delay is a real problem rather than just impatience.

Disclaimer: This article is for education only and is not investment advice. The IPO dates, lot price and amounts in the worked example are hypothetical. Always check the actual dates and terms in the issue’s offer document, and consult a SEBI-registered adviser before investing.