Amount invested
—
Shares allotted at the issue price
Investment vs listing gain
How much of the value on listing day is the amount you invested, and how much is the listing gain.
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IPO Return Calculator
An IPO allotment is bought at a fixed issue price and marked to whatever the market pays on listing day. This page turns those two prices and your allotment into the four numbers that matter — what you put in, what the shares are worth at listing, the listing gain in rupees, and the return as a percentage.
Inputs this calculator uses
- IPO issue price — the price per share you were allotted at, in ₹.
- Listing price — the price per share when the stock lists, in ₹.
- Number of lots — the lots actually allotted to you, not applied for.
- Lot size — shares in one lot, as stated in the IPO prospectus.
How the IPO return formulas work
Shares come first:
Total shares = lots × lot size.
From there,
Amount invested = total shares × issue price
and
Listing value = total shares × listing price.
The listing gain is the difference between the two, and the return is
gain ÷ amount invested × 100.
Because both sides scale with the same share count, the return percentage depends only on the
two prices — the lot inputs decide how many rupees that percentage is worth to you.
Worked example
An IPO is priced at ₹500 with a lot size of 30 shares, and you are allotted one lot. You have invested ₹15,000 for 30 shares. The stock lists at ₹650, so the allotment is worth ₹19,500 — a listing gain of ₹4,500, or 30%, at ₹150 per share.
When an IPO lists at a discount
Listing gains are not guaranteed. If the same issue had listed at ₹430, the allotment would be worth ₹12,900 against ₹15,000 invested — a loss of ₹2,100, or −14%. Enter a listing price below the issue price and the calculator reports the shortfall the same way it reports a gain.
Reading the result
The return here is a simple gain, not an annualised one. A listing happens within days of the issue closing, so annualising it would inflate a one-week move into a headline figure that says nothing useful. The numbers are also gross: brokerage, STT, stamp duty, and GST apply when you sell, and short term capital gains tax applies if you exit on or near listing.
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Track the payout on a stock you hold with the dividend yield calculator, work out share price and share count after a corporate action with the stock split calculator, or project a one-time investment over a longer horizon using the lumpsum calculator.
FAQ
IPO return calculator FAQs
What is an IPO listing gain?
A listing gain is the difference between the price at which a company lists on the exchange and the issue price you were allotted shares at. If a ₹500 issue lists at ₹650, the listing gain is ₹150 per share, or 30% on the amount invested.
How is the IPO return calculated?
Total shares = lots × lot size. Amount invested = total shares × issue price, and listing value = total shares × listing price. The listing gain is the difference between the two, and the return percentage is that gain divided by the amount invested.
What is a lot in an IPO?
Indian IPOs are applied for in fixed bundles called lots. The prospectus states the lot size — the number of shares in one lot — and retail applications must be for one lot or a whole multiple of it. Entering lots and lot size separately here mirrors how the allotment is actually reported.
What if the stock lists below the issue price?
That is a discount listing, and it happens regularly. Enter the lower listing price and the calculator shows a negative listing gain and a negative return, so you can see the loss on the allotment in rupees and as a percentage.
Is this return annualised?
No, and deliberately so. A listing gain is realised within days of the issue closing, so annualising it would produce a meaningless figure running into hundreds of percent. The return shown is the simple gain on the amount invested.
Does the calculator account for partial allotment?
Enter only the lots actually allotted to you. Oversubscribed IPOs are allotted by lottery, so retail applicants often receive one lot or none at all regardless of how many they applied for. The blocked amount for unallotted lots is released and is not part of this calculation.
Are IPO listing gains taxable in India?
Yes. If you sell on or soon after listing, the gain is a short term capital gain on a listed equity share and is taxed at the applicable short term rate. Holding for more than twelve months before selling moves the gain into the long term bracket. This calculator shows the gross gain, before tax and charges.
What costs are not included here?
The figures are gross. Brokerage, STT, exchange and SEBI charges, stamp duty, and GST on brokerage apply when you sell, and will reduce the net amount you take home slightly below the listing gain shown.