Free IPO education tool

IPO subscription calculator and retail allotment explainer

Calculate category-level IPO demand, interpret subscription multiples and see why heavily oversubscribed retail issues may require a draw of lots.

Educational methodology · Reviewed 13 August 2026 · SoHo Wealth editorial review

Subscription multiple calculator

Enter category-level demand—not the entire IPO—to calculate the subscription multiple.

Shares offered in categoryShares bid for

Calculated demand

8.50×

Bids are 8.50 times the shares available in this category. This is a demand ratio, not a return forecast or quality rating.

How to read subscription levels

Below 1×Demand is below the shares available at that point.Final-day bids can materially change the figure.

1×Bids approximately match the shares available.A fully subscribed issue is not automatically fully allotted in every category.

2–5×Demand exceeds supply, so allotment pressure begins.Category-level demand matters more than the total alone.

5–20×The category is meaningfully oversubscribed.This still says nothing directly about valuation or business quality.

Above 20×Demand is very high relative to the offered quantity.Small issues can produce extreme multiples with modest absolute demand.

Retail allotment illustration

Why oversubscription can lead to a draw of lots

This simplified illustration assumes each successful retail applicant receives one minimum lot. It does not reproduce the exchange-approved basis of allotment.

Shares reserved for retailMinimum lot sizeValid retail applicants

Minimum lots available

7,000

Illustrative applicant coverage

14.00%

This percentage is an educational ratio, not your actual allotment probability. Valid applications, category rules, lot rounding, technical rejections and the final basis of allotment determine the outcome.

IPO subscription calculator FAQs

How is an IPO subscription multiple calculated?

Divide the number of shares bid for in a category by the number of shares offered or reserved in that same category. For example, bids for 50 lakh shares against 10 lakh available shares equal 5 times subscription.

Does total IPO subscription determine retail allotment?

No. Retail allotment is driven by valid demand and shares available in the retail category, not the headline total across all categories.

Is this an IPO allotment probability calculator?

No. It provides an educational applicant-coverage ratio under simplified assumptions. Only the final exchange-approved basis of allotment determines distribution.

Does higher QIB subscription guarantee listing gains?

No. QIB demand is one market signal. Issue valuation, business performance, broader markets and post-listing supply can produce a different result.

Why can live subscription figures change after an IPO closes?

Exchange and registrar reconciliation can remove invalid, duplicate, withdrawn or technically rejected bids. The final validated demand can therefore differ from live data.

This tool provides simplified educational calculations. It does not predict allotment, listing gains or investment returns, and it is not a recommendation to apply for any IPO. Verify final demand and allotment information with the exchange and registrar.