ASBA and UPI mandate in IPOs: meaning and how they work

ASBA stands for Applications Supported by Blocked Amount. When you bid in an IPO, the money is not sent to the company or to a broker. Your bank puts a hold, called a block, on the bid amount in your account. The money keeps earning savings interest in your account, but you cannot use it.

If you get shares, the bank debits the amount for the shares allotted and releases the rest. If you get none, the whole block is lifted. The method was made compulsory for all investors in public issues by SEBI, so that investors do not have to part with their money for weeks while waiting for refunds.

UPI is the instant payment system run by the National Payments Corporation of India (NPCI). For IPOs, UPI works as a way to place the ASBA block. The steps below show the flow when you apply through a broker app.

• You enter the bid in your broker's app or on an exchange platform and give a UPI ID that is linked to your bank account.
• A mandate request, a payment request that blocks funds, is sent to your UPI app.
• You approve it with your UPI PIN. The bank blocks the bid amount. No money leaves your account.
• The exchange passes the bid to the registrar, who works out the allotment after the issue closes.
• Shares are allotted, the bank debits the right amount and the rest of the block is removed.

As of November 2026, individual investors can use UPI for bids up to ₹5 lakh in a public issue. SEBI raised the limit from ₹2 lakh to ₹5 lakh in April 2022, for issues opening from 1 May 2022. Above that, a bid has to go through ASBA with net banking at a self-certified syndicate bank (SCSB). The retail category itself covers bids up to ₹2 lakh, so a UPI bid between ₹2 lakh and ₹5 lakh falls in the non-institutional category, according to published explainers.

The mandate must be approved before the deadline the issue sets. Sources differ on the exact cut-off time, so the dates in the specific issue's timetable should be followed. A bid without an approved mandate is not funded and may not count.

The IPO timeline is T+3, where T is the day the issue closes, as mandatory from December 2023. Allotment is finalised on T+1. On T+2 the blocked amount for unallotted bids is released and shares are credited to allotted accounts. Listing takes place on T+3.

If a bank is late in releasing the block, SEBI's rules make it pay the investor compensation. Summaries put it at the higher of ₹100 a day or 15% a year on the amount, from the day the release was due. Check the current circular for the exact terms.

For an investor, ASBA means the money earns interest until allotment and nothing is lost if shares are not allotted. It also means a person can bid in several IPOs with the same balance only if the blocks fit within it, since each bid freezes funds.

For the startup going public, the system makes bids easy for millions of small investors. This is one reason retail participation in Indian IPOs has grown. It also makes the number of valid applications transparent, because each one has a block on record.

A handful of figures come up in almost every IPO application, as of November 2026. Rules can change, so the circular or the issue's own timetable is the final word.

• UPI bid limit for individuals: ₹5 lakh.
• Retail category limit: bids up to ₹2 lakh.
• Timeline: T+1 for allotment, T+2 for release and share credit, T+3 for listing.
• Delay compensation: the higher of ₹100 a day or 15% a year, according to summaries of SEBI's rules.
• Number of bids: one bid per PAN in the retail category, with separate rules for other categories.

A few issues come up often. The first is a pending mandate, where the investor does not approve the request in time and the bid fails. The second is an invalid UPI ID, which gets the bid rejected. A third is a mismatch between the name or PAN on the demat account and the bank account. Finally, an account without enough balance cannot be blocked.

Investors can check bid status with the registrar or the exchange. Bids with one PAN made more than once in the same category can be rejected as multiple applications.

A headline that says an IPO was subscribed many times refers to bids, and each bid had a block behind it. A large number of blocked applications does not mean that all of them became allotments. A retail investor's chance of allotment depends on the category and, in oversubscribed issues, on a lottery. In such a case most bidders see the full block released.

Also read the closing date carefully. The deadline for approving a UPI mandate can fall on or after the closing day, according to different explainers, so the schedule for the specific issue is the reference.

People often think a UPI IPO application and an ASBA application are different things. In practice, the UPI mandate is one way of doing ASBA. Another way is net banking. Both block money in your own account.

Some also confuse a block with a payment. In a block, the money never moves. It is debited only on allotment. This is general information, not investment advice, so follow the issue's own instructions.

A practical habit is to keep enough free balance in the linked account for the full bid, to use a UPI ID that belongs to the same person as the demat account, and to note the mandate request time on the app. After the issue closes, the registrar and the exchange pages show whether a bid was accepted, which helps to find out why a block remains when no shares arrive.