IPO T+3 IPO listing timeline basis of allotment demat credit SEBI ASBA

Time taken to list after an IPO closes (T+3)

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A public issue in India lists on the stock exchange on the third working day after the issue closes, a timeline written as T+3, where T is the issue close date. SEBI set this timeline in circular SEBI/HO/CFD/TPD1/CIR/P/2023/140 dated 9 August 2023, made it voluntary for public issues opening on or after 1 September 2023, and mandatory for all public issues opening on or after 1 December 2023. The T+3 regime replaced the earlier T+6 timeline, which had itself replaced an original process that ran from T+15 to T+21.

This article sets out the day-by-day sequence inside that three-day window: what finishes on T+1, what moves on T+2, and what happens on T+3. The compression to T+3 cut the period during which an unsuccessful applicant’s money stayed blocked, and it brought the primary-market settlement closer to the T+1 settlement cycle that already governs the secondary market.

Why the timeline was compressed

The driver behind T+3 was the blocked-funds problem. Under ASBA , an applicant’s bid amount is not paid out; it is blocked in the bank account through a UPI mandate or a bank lien and is debited only to the extent shares are allotted. The longer the listing process runs, the longer an unsuccessful applicant’s money stays locked. Under T+6, that block held for six working days after the issue closed. T+3 halves it.

SEBI did not implement the change without testing it. The regulator consulted issuers, registrars and transfer agents, sponsor banks, broker-distributors, and anchor investors, and ran the compressed cycle on actual issues during the voluntary phase before making it mandatory. Alongside the shorter timeline, the same circular tightened the allotment process with PAN-based third-party verification, requiring the registrar to match the application PAN against the PAN in the demat account and the PAN linked to the applicant’s bank account, with mismatched applications treated as invalid at the allotment stage. It also moved the start point for computing investor compensation on delayed ASBA unblocking to T+3.

The day-by-day sequence

The three-day window runs through four calendar markers. The table below sets out the standard sequence.

Working dayWhat happens
TSubscription window closes. The exchanges publish the final subscription multiples. Sponsor banks stop accepting mandate approvals.
T+1The registrar to the issue finalises the basis of allotment and the issue price. PAN-based verification of applications is completed. The allotment file is sent to the depositories. Allotment status is published on the registrar portal.
T+2The exchanges grant listing and trading approval. Allotted shares are credited to allottees’ demat accounts by end of day. Unsuccessful applicants’ UPI ASBA mandates are cancelled and bank ASBA liens released.
T+3Listing day. The shares are admitted to trading after a special pre-open session , with continuous trading following.

T: the issue closes

T is the last day of the bidding window. Retail and HNI bids and mandate approvals must be in before the window shuts, typically by 5 PM, with the cut-off price option available to retail applicants. After T, the exchanges publish the final subscription figures, and the sponsor banks stop accepting new UPI mandate approvals. From this point the count to listing is in working days, so a close on the eve of a long weekend shifts every later step.

T+1: basis of allotment and issue price

On T+1 the registrar finalises the basis of allotment , the rule by which shares are distributed when the issue is oversubscribed, and fixes the issue price within the price band . For a retail category that is oversubscribed, allotment runs by a SEBI draw of lots that guarantees the minimum lot to as many applicants as the available shares permit; for the HNI categories it runs proportionately with a guaranteed minimum. The registrar also completes the PAN-based third-party verification on T+1, and applications with a PAN mismatch against the demat or bank PAN are treated as invalid. The allotment file then goes to CDSL and NSDL , and the allotment status is published on the registrar portal, KFin Technologies or Link Intime .

T+2: demat credit and block release

On T+2, two things happen in parallel. Allotted shares are credited to the allottees’ demat accounts by end of business. And unsuccessful applicants have their blocks released: a UPI ASBA mandate is cancelled and the available balance returns to the bank account; a bank ASBA lien disappears from the NetBanking holds section. SEBI requires the release to finish by end of T+2, and delays beyond that are reportable, with compensation computed from T+3.

The demat credit on T+2 is a depository event, not a broker-app event. An applicant may receive a CDSL or NSDL confirmation email that shares are being credited, yet the shares will not appear in the broker’s holdings until on or before the listing day. Zerodha states this directly: the CDSL confirmation “only informs you that shares are being credited to your demat account,” and the shares “will only appear in Kite on or before the listing day.” The credit timing also explains why the average cost reads N/A and why the shares are not yet visible until listing.

T+3: listing day

On T+3 the shares are admitted to trading. The day opens with a special pre-open session in which the listing price is discovered through a call auction, followed by continuous trading. The exchange confirms the exact listing date in a listing circular on its website, usually one working day in advance, so the date shown on the broker app before then is only a tentative estimate.

How holidays stretch the calendar gap

Because the count is in working days, the calendar gap from close to listing is three days only when the three days after the close are all working days. A trading or bank holiday inside the window adds a day. An issue that closes on the Thursday before a Friday holiday, for instance, will not list on the following Tuesday on a naive three-calendar-day count; it lists on the third working day, which the intervening holiday pushes further out. The exchange holiday calendar governs the count, and the listing circular carries the final date.

How T+3 compares with the old timelines

The progression of the Indian IPO listing timeline runs in three stages. The original process, before the ASBA and book-building reforms matured, ran from roughly T+15 to T+21 in calendar terms. SEBI then standardised T+6, under which listing fell on the sixth working day after close. The T+3 circular of August 2023 cut that to three working days. Each compression reduced the blocked-funds period for unsuccessful applicants and shortened the gap between an investor committing money and the shares being tradable.

The shorter cycle puts pressure on the registrar and the depositories to finish allotment, verification, and demat credit faster, which is why the circular paired the compression with the PAN-based verification step and a stress-tested rollout. For the applicant, the practical effect is simple: money blocked on a bid is either converted to shares or returned within three working days of the issue closing, and the shares are tradable on the third working day after close.

See also

External references

References

  1. SEBI Circular SEBI/HO/CFD/TPD1/CIR/P/2023/140 dated 9 August 2023, Reduction of timeline for listing of shares in public issue from existing T+6 days to T+3 days. Voluntary for issues opening on or after 1 September 2023; mandatory for issues opening on or after 1 December 2023.
  2. Zerodha support, Why are the shares credited for an IPO bid not visible on Kite even after receiving confirmation from CDSL? (as of 21 June 2026).
  3. NSE India and BSE India, listing and trading-approval circulars.
  4. SEBI press releases on the phased introduction and stress testing of the T+3 timeline, sebi.gov.in.

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Frequently asked questions

How many days after an IPO closes does it list?
Three working days. Under SEBI circular SEBI/HO/CFD/TPD1/CIR/P/2023/140, a public issue lists on T+3, where T is the issue close date. If a Monday close has three clear working days after it, listing is on Thursday, assuming no holiday intervenes.
What is the T+3 IPO listing timeline?
T is issue close. On T+1 the registrar finalises the basis of allotment and the issue price. On T+2 shares are credited to demat accounts and unsuccessful applicants’ ASBA blocks are released. On T+3 the shares list and trading begins after a special pre-open session.
When did T+3 listing become mandatory?
1 December 2023. SEBI made T+3 voluntary for public issues opening on or after 1 September 2023 and mandatory for all public issues opening on or after 1 December 2023, replacing the earlier T+6 timeline.
Does T+3 count calendar days or working days?
Working days. T is the issue close date, and the three days are counted excluding weekends and exchange holidays. A holiday inside the window pushes listing to the next working day, so the calendar gap can be more than three days.
When are IPO refunds and ASBA blocks released?
On T+2, the day before listing. Unsuccessful applicants have their UPI mandates cancelled and bank ASBA liens released by the end of T+2. SEBI requires the release by that day, and compensation for delay is computed from T+3.
When are allotted shares credited to my demat?
On T+2, the day before listing. The shares sit in the demat account from T+2 but become visible and tradable in the broker app only on or before the listing day. The credit confirmation email is not the same as the shares being tradable.

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The WebNotes Editorial Team covers Indian capital markets, payments infrastructure and retail investor procedures. Every article is fact-checked against primary sources, principally SEBI circulars and master directions, NPCI specifications and the official support documentation published by the intermediary in question. Drafts go through a second-pair-of-eyes review and a separate compliance read before publication, and revisions are tracked against the SEBI and NPCI rule changes referenced in the methodology section.

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