Mohit Mehra

← Writing  / IPO Basics

If you have applied for an IPO in India in the last several years, you have used ASBA, whether you knew it or not. ASBA stands for Application Supported by Blocked Amount, and it is the mechanism that governs how your money is handled between the time you apply for an IPO and the time allotment is finalised. Understanding how ASBA works helps you understand why the process is structured the way it is, and what happens to your money at each stage.

What ASBA Means: Blocked, Not Debited

The key word in ASBA is blocked. When you apply for an IPO, the application amount is not transferred out of your bank account to the company or to any escrow. Instead, it is blocked in your own bank account, you can see it in your balance, but you cannot spend it. It remains your money, sitting in your account, while the IPO process runs its course.

The block is placed by your bank (or by your UPI-linked bank in the case of UPI ASBA) on the basis of a mandate you authorise. The blocked amount equals the total value of the IPO application: lot size multiplied by number of lots applied for multiplied by the upper end of the price band.

This is a fundamentally different model from how IPO applications worked before SEBI mandated ASBA. In the older system, applicants sent physical cheques with their applications. Those cheques were deposited by the company, the money left the applicant’s account immediately, and a refund was processed if the applicant did not receive an allotment. This meant applicants lost access to their money for several weeks during the process and received no interest on it. The ASBA system eliminated all of this.

Why ASBA Is Better Than the Old Cheque System

The advantages of ASBA over the cheque-based system are significant and concrete.

First, you earn interest on your blocked funds. Since the money stays in your bank account, any interest accruing on that balance continues to accrue to you. In a savings account earning 3-4% per year, the interest on a Rs 2 lakh application blocked for seven to ten days is modest but not nothing. More importantly, you retain full ownership of the funds, the money never leaves your account until allotment is confirmed.

Second, there is no counterparty risk with the company holding your money. In the old system, your money sat with the company during the subscription period. If something went wrong with the IPO process, a rare but not impossible scenario, your money was at risk. Under ASBA, your money never goes to the company until allotment, and even then only the allotted amount is debited.

Third, refunds are instant. Because the money was never debited, there is nothing to refund if you do not receive an allotment. The block simply lifts and the funds become freely available again. The old refund process took days to weeks; the modern ASBA non-allotment unblock happens on the allotment date.

Bank ASBA vs UPI ASBA

There are two variants of ASBA in use today: bank ASBA and UPI ASBA. The mechanism is the same in both cases, funds are blocked, not debited, but the channel through which the block is placed differs.

Bank ASBA is the original mechanism, where applications are submitted directly through the bank’s net banking or branch channel. The bank itself processes the application on the investor’s behalf and places the block directly. This is available for applications of any size and does not require a UPI-linked account specifically for IPO applications.

UPI ASBA, introduced by SEBI to streamline the retail investor experience, uses the UPI payment infrastructure. When you apply for an IPO through a broker like your broker, you enter your UPI ID and the block request is sent to your UPI-linked bank account as a collect mandate. You approve this mandate in your UPI app, and the block is placed. UPI ASBA is the dominant channel for retail IPO applications today because it integrates cleanly with the broker interface, you apply and approve the block in one seamless flow without visiting your bank’s website separately.

The UPI ASBA limit for retail investors is currently set at Rs 5 lakh per application, which covers most retail participation given the Rs 2 lakh retail category limit.

What Happens at Allotment vs Non-Allotment

On the allotment date, one of three things happens with your blocked amount.

If you receive a full allotment, the exact allotment amount is debited from your bank account. If the issue price was at the upper end of the price band (which it typically is for oversubscribed IPOs), the full blocked amount is debited. If the issue price was lower, only the amount corresponding to the issue price is debited and the rest is unblocked.

If you receive a partial allotment, which happens in oversubscribed issues because allotment is done in multiples of the minimum lot, the amount corresponding to your actual allotment is debited and the rest is unblocked. Your demat account is credited with the allotted shares on listing day.

If you receive no allotment, the entire blocked amount is unblocked simultaneously on the allotment date and your funds become freely available with no action required on your part.

The key insight about ASBA is that your money stays in your account and earns returns until allotment, the company only gets your money if and when shares are actually allocated to you, which is a fundamentally more investor-protective mechanism than the old cheque-based system. And if you want to understand the demat account that receives your allotted shares, my article on demat accounts in India covers the fundamentals.