IPO Allotment Probability Calculator
Adjust the subscription multiple and pick your investor category to see the historical allotment rate from 500+ past Indian IPOs.
Estimated Allotment Probability
42%
At 15x subscription, Retail investors historically received allotment in 42% of cases.
How the Allotment Probability Calculator works
When an IPO is oversubscribed in the Retail or HNI category, SEBI rules require the registrar to move to a computerised lottery allotment. Each applicant is allotted the minimum bid lot regardless of the number of lots they applied for, and the lottery runs only among applicants whose bids reached the upper price band. This calculator lets you estimate the probability of a single lot being allotted based on the final category subscription multiple.
The lookup table behind the tool is derived from the last 500+ Indian mainboard IPO allotments — covering retail, small-NII (sNII), big-NII (bNII), and QIB categories. You pick your category, slide the subscription multiple from 1x to 200x, and the tool returns the historical allotment rate at that multiple. It is not a guarantee — each IPO's allotment is subject to the exact bid book and category-wise subscription on the cut-off date.
Retail investors who are serious about allotment often apply under multiple Demat accounts belonging to different family members, each at the cut-off price. Use this tool before you decide whether to apply via a single account or spread across multiple applications. Remember: applying multiple times through the same PAN is not permitted and will result in all applications being rejected.
Disclaimer: This calculator is for educational purposes only. Historical allotment rates do not guarantee future results. Always read the Red Herring Prospectus before applying for any IPO.