IPO Allotment Probability Calculator
For retail investors (less than Rs 2 lakh application), allotment in oversubscribed IPOs is lottery-based at 1 lot per successful applicant. If an IPO has 10 lakh retail applications for 1 lakh lots: probability = 1/10 = 10%. Applying from multiple demat accounts (family members) multiplies your chances proportionally.
Investment Required
₹15,000
Allotment Probability
66.67%
Oversubscription
1.5x
Listing Gain Estimate (if allotted 30 shares)
At 20% premium
₹3,000
At 50% premium
₹7,500
At 100% premium
₹15,000
Retail Individual Investor (RII) quota is 35% of the issue. Allotment for oversubscribed IPOs is done via lottery — each applicant gets max 1 lot or nothing.
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Common questions about IPO Allotment Probability Calculator
How do I maximize my IPO allotment chances?
Apply from multiple demat accounts (each family member: self, spouse, parents, adult children) - each application independently enters the lottery. Use the ASBA (Applications Supported by Blocked Amount) facility so funds are only blocked, not debited. Apply on the last day to avoid technical glitches and ensure you have visibility of the subscription level before applying.
What is the minimum and maximum application in retail category?
Retail investors can apply for a minimum of 1 lot (typically 10-100 shares worth Rs 10,000-15,000 usually). Maximum for retail: Rs 2 lakh. To maximize chances, apply for exactly 1 lot - multiple lots do not improve allotment probability in the retail lottery (all retail applicants above 1 lot but under Rs 2 lakh are treated as 1-lot applicants in the lottery).
How is IPO allotment decided for oversubscribed IPOs?
SEBI rules: if retail applicants exceed available lots, registrar runs a computerized lottery giving each eligible applicant at most 1 lot. Non-allotted applicants receive full refund within T+6 days (T = issue close date). If subscription is less than 1x retail allotment, SEBI allows proportionate allotment below minimum lot size for retail.