You can usually sell shares the day after buying them, even though they haven't reached your demat account yet. Your sale is simply settled using the delivery that's already on its way to you. The catch: your sale now depends on that incoming delivery arriving on time. If it fails, your sale fails with it.
How can I sell something I haven't received?
Because of how the settlement calendar overlaps. Equity Delivery trades settle on T+1: buy on Monday, and the shares reach your demat account on Tuesday. The full timeline is in when will my bought shares show in holdings?
Now suppose Priya buys 100 shares of Bharat Paints Ltd on Monday and sells them Tuesday morning, before Tuesday's pay-out has credited them. Her sale is a Tuesday trade, so its delivery is due Wednesday. By Wednesday, Monday's purchase will have landed in her account, just in time to be delivered against Tuesday's sale. The two settlement cycles dovetail, and everything works.
| Day | Priya's buy (Monday trade) | Priya's sell (Tuesday trade) |
|---|---|---|
| Monday | Buys 100 shares | — |
| Tuesday | Shares credited at pay-out | Sells 100 shares |
| Wednesday | . | Shares delivered at pay-in |
Traders often call this style of trade "BTST" (buy today, sell tomorrow). On Rupeezy, the product built for it is T+5, which lets you sell shares within five days of buying without waiting for delivery. See what is the T+5 product?
Where is the risk in this?
In the one link of the chain you don't control: the incoming delivery. Priya's Wednesday obligation assumes her Monday seller delivers on Tuesday. If that seller defaults (a short delivery to her), Priya may receive her shares late (through an auction) or receive cash compensation instead of shares at all.
Either way, on Wednesday she has 100 shares to deliver and possibly nothing in her demat account. Now her sale becomes a short delivery, and her buyer's shares get sourced through an auction, at her cost, with penalties. How that unfolds is explained in how does the auction process work when there's a short delivery?
Notice the chain: someone else's failure can cascade into yours, purely because you sold before delivery was complete. If Priya had waited for the shares to reach her account before selling, a failed incoming delivery would have cost her only time, never an auction.
How likely is this, really?
Short deliveries are the exception, not the rule. Most trades settle cleanly, so most sell-before-delivery trades complete without drama. The risk concentrates in less liquid stocks, stocks locked in circuits, and volatile sessions, where sellers are more likely to fail. It's a small probability with a disproportionate cost when it hits.
Things to keep in mind
- Selling before delivery works because settlement cycles overlap, but it silently makes you dependent on your seller's pay-in.
- If the incoming delivery fails, your onward sale can become a short delivery, and auction costs plus penalties fall on you.
- The risk is higher in illiquid stocks and stocks hitting circuit limits; in liquid large-cap names, failures are rare.
- Stocks under the trade-to-trade (T2T) segment must be settled by actual delivery, selling before delivery isn't permitted there, so check the stock's segment first.
Read next
What is an auction settlement? — What the exchange does when a seller fails to deliver.