What is ASBA and how IPO money gets blocked in your bank account
ASBA blocks your IPO money in your own bank account instead of taking it. How the block works, what you need to apply, and what happens to the money when the lottery runs.
The first time someone applies for an IPO through Mero Share, a small panic usually follows. They enter the units, hit apply, and then check their bank balance. The money is still there. Did the application fail? They apply again, worried, and now they are staring at a balance that looks untouched for an amount they were sure they had just committed.
Nothing failed. The money is exactly where it should be: in your account, frozen, not gone. That freeze is the entire point of ASBA, and understanding it removes most of the confusion around applying for shares in Nepal.
The old way, and why ASBA replaced it
Before ASBA, applying for shares meant parting with your cash first. You filled a physical form, paid the full amount at a designated collection centre, and waited. If you did not get the allotment, you waited some more for a refund, often around ten days, sometimes longer. The money left your hands the moment you applied and came back slowly, if at all, without earning you anything in between. Mistakes on the form could not be corrected.
The centralised C-ASBA system, live since Falgun 11, 2074 (around 23 February 2018), flipped the logic. Instead of collecting your money and refunding the losers, it blocks your money and only debits the winners. No upfront payment leaves your account, no refund queue, no trip to a collection centre. Applications moved online, and errors became fixable before the deadline.
What "blocked" actually means
A block is a lien, a hold. The rupees stay in your account, counted in your balance, but earmarked and unspendable for the duration of the application. You cannot withdraw or transfer the blocked amount, but it has not gone anywhere either.
Walk through a single application:
- You apply for 10 kitta of a Rs 100 IPO. Application value: Rs 1,000.
- ASBA places a Rs 1,000 lien on your linked bank account. Your balance still shows the money; Rs 1,000 of it is now frozen.
- The issue closes and allotment runs.
- If you are allotted 10 kitta: Rs 1,000 is debited and the shares land in your Demat. The lien is settled.
- If you get nothing: the Rs 1,000 lien is lifted. The money was never debited; it is simply free to use again.
Now the oversubscribed case, where you apply for more than the minimum. Say you apply for 100 kitta, so Rs 10,000 is blocked, but the lottery allots you only the minimum 10 kitta. Then Rs 1,000 is debited for the allotted shares and the remaining Rs 9,000 block is released. You only ever pay for what you actually receive.
Because the money sits in your account throughout, it should keep earning your normal savings interest until any allotted portion is debited. That is one of ASBA's headline advantages over the pay-upfront era, though it is worth confirming the exact treatment with your own bank.
The three things you need to apply
ASBA does not work off your bank account alone. It needs a chain linking your identity, your shares, and your money.
| What | What it is | Where you get it |
|---|---|---|
| Demat / BOID account | Your beneficiary account that holds shares electronically; identified by a 16-digit BOID | A depository participant (DP), usually a broker or bank |
| Mero Share login | CDSC's online portal where you actually submit IPO, FPO, rights, debenture and mutual-fund applications | Registered via your DP |
| CRN | C-ASBA Registration Number; the link between your bank account and your Demat account | Your ASBA member bank, after it verifies your Demat account |
The CRN is the piece people forget. It is what tells the system which bank account to block money in for your applications. Your bank issues it after verifying your beneficiary account. A wrong or lapsed CRN is one of the classic reasons an application silently fails, covered alongside the other slip-ups in Mero Share and demat mistakes to avoid. The full account-by-account setup, including how these connect to trading, is in how to buy your first share on NEPSE.
CDSC operates the centralised system, and a wide set of banks act as ASBA members, so you can almost always block from the bank you already use. The same ASBA route is how you apply for debentures and mutual fund issues, not just equity IPOs.
The lottery, and why applying for more rarely helps
Popular Nepali IPOs are routinely oversubscribed many times over. When demand exceeds the shares on offer, allotment is decided by a computerised lottery, and the minimum allotment is 10 kitta per successful applicant. Crucially, each applicant gets one entry regardless of how many units they applied for.
The practical consequence: in a heavily oversubscribed fixed-price ordinary IPO, blocking Rs 50,000 for 500 kitta does not give you fifty times the chance of blocking Rs 1,000 for 10 kitta. You are one ticket either way. It mostly ties up more of your money for the application window. The detailed mechanics of the draw, the per-issue oversubscription numbers, and why the old multi-account trick stopped working are in how IPO allotment actually works.
After allotment, winners' money is debited and everyone else's block is released within days. Reported timeframes vary across issues, so treat "a few working days after the allotment result" as the planning assumption rather than a fixed guarantee, and watch your bank for the release.
A sense of scale
ASBA is not a niche facility. As of the end of Baisakh 2081/82 (around April-May 2025), Nepal had roughly 6.75 million Demat accounts and about 5.81 million Mero Share users, per SEBON and CDSC figures. That is a very large pool of people chasing each issue through the same blocking system, which is exactly why oversubscription and the lottery are the norm rather than the exception.
The small charges reflect how routine it has become. Many banks levy a token fee, commonly around Rs 5 per application, and several charge nothing at all. It is not a cost worth optimising; the friction ASBA removed (upfront payment and refund delay) dwarfs the per-application fee.
What you actually need to know
Three takeaways:
- Blocked is not debited. Your IPO money stays in your account, frozen, until allotment. Winners get debited for what they receive; everyone else gets the block lifted, no refund to chase. The untouched balance after you apply is the system working, not a failed application.
- The CRN is the link that makes it all work. A Demat account holds the shares, Mero Share submits the application, and the CRN tells the system which bank account to block. Keep all three current before an issue opens, not during it.
- More units rarely means better odds. In an oversubscribed fixed-price IPO, allotment is one ticket per applicant with a 10-kitta minimum. Blocking a large amount mostly freezes more of your cash for the window.
If an application of yours blocked the wrong amount, failed silently, or the release after allotment did not come through, email parjanya57@gmail.com with the specifics.
This post is part of the Nepal Money Basics guide — the investing section.