How to calculate IPO profit: listing gain per lot and percentage
An IPO's listing gain is simple arithmetic, but it is easy to forget charges and tax, and harder still to keep a total across several family accounts.
The formulas
Listing gain per share = listing price - issue price.
Profit per lot = listing gain per share × lot size.
Listing gain % = (listing price - issue price) ÷ issue price × 100.
If you sell at a different price from the listing price, use your sell price instead.
Worked example
An IPO is priced at ₹200 with a lot of 75 shares and lists at ₹230. The gain is ₹30 a share, ₹2,250 per lot, which is 15%. Sold at ₹225 instead, the profit is ₹25 × 75 = ₹1,875.
What comes off
Brokerage, securities transaction tax, exchange and depository charges and GST reduce the profit. On a one-lot allotment they can take a noticeable share. Gains on shares sold within a year are taxed as short-term capital gains.
Across the whole family
IPO Khata's P&L page does this for every allotment in the family: unsold shares are valued at the listing price, and each sale is listed by person and IPO with its charges and gain, totalled for each financial year. The table downloads as a CSV file.
Related guides
- Tax on IPO gains
- Selling or holding IPO shares on listing day: what to weigh
- What is IPO GMP? Full form, meaning and how to calculate it
More on gmp, listing day and tax
- What happens on IPO listing day
- Kostak and subject-to-sauda, explained
- How an IPO share lists: the pre-open session
- Diwali muhurat trading 2026: date, timings and how it works
- How to sell IPO shares: listing day step by step
- Is the IPO grey market legal? What it is and the risks
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Information, not investment advice. GMP is an unofficial grey-market indicator; figures come from public sources (InvestorGain) and may be late or wrong. Not registered with or affiliated to SEBI, the exchanges, the registrars or InvestorGain.