Updated · BreakPoint Research Desk
BTST (buy today, sell tomorrow) means buying shares in delivery during one session and selling them in the next session, before the shares have been credited to your demat account. India’s cash market settles on T+1, so shares bought today normally arrive on the next working day — which is when you are already selling them.
The appeal is catching a next-morning move without holding for days. The risks are overnight gaps that can jump past any stop, and short delivery: if the seller you bought from fails to deliver, your BTST sale also cannot be delivered, and the exchange auction or close-out can cost more than the trade made.
Key takeaways
When you buy in the cash market, the exchange settles the trade on the next working day (T+1): pay-in of funds and securities happens then, and the shares are credited to your demat afterwards. In BTST you sell on T+1 before that credit, relying on the incoming shares to fulfil your sale.
| Intraday | BTST | Swing (delivery) | |
|---|---|---|---|
| Holding | Same day | One night | Days to weeks |
| Overnight gap risk | None | Yes | Yes, repeatedly |
| Short-delivery risk | No | Yes | No (shares already credited) |
| Leverage | Often available | Limited | Limited (unless MTF) |
| Typical charges | Intraday rates | Generally delivery-like | Delivery rates |
If the person who sold you the shares fails to deliver them, you do not receive them on time — so your BTST sale cannot be delivered either. The exchange then auctions the shares for your buyer, and if that fails, the trade is closed out at a price set by exchange rules. The resulting cost can exceed your profit.
Many brokers do not allow BTST in certain categories, such as trade-for-trade (T2T) stocks where every trade must be settled by delivery. Stocks hitting circuit limits can also make the next-day exit difficult.
BTST is generally charged like a delivery trade, so taxes and depository charges can be higher than intraday. Small next-morning gains may not cover them.
✅ A BTST candidate should
Many BTST traders look for candidates in the last hour, after most of the day’s selling or buying pressure is visible, and exit early the next morning if the expected follow-through does not appear.
At 3:10 pm a liquid stock trades at ₹500 near its day high after a sector-wide rally. The trader’s normal stop is ₹490, but they assume a bad overnight gap could open at ₹475.
Sizing from the ₹10 stop would allow 500 shares, but a gap to ₹475 would cost ₹12,500 — 2.5% of capital. Sizing from the gap scenario gives 200 shares, keeping even the bad case near 1%. The next morning the stock opens at ₹506 and the trader exits.
For overnight trades, size from the gap you could realistically face, not only from the stop you plan to use.
Treating BTST like intraday
The overnight period carries risks no intraday stop can manage.
Ignoring short-delivery risk
It is rare but real, and the cost falls on the BTST seller.
Buying stocks that faded into the close
Weak closes rarely lead to strong next-morning follow-through.
Holding “one more day” after a gap down
That turns a BTST into an unplanned swing trade.
Forgetting charges
Delivery-like costs can erase small overnight gains.
BTST decisions happen in the last hour, when time is short. BreakPoint shows where strength is and what news is due. It does not recommend BTST trades, and how its tools select stocks stays private.
Who is closing strong
Market Mover shows the strongest stocks and leading industries through the session, including near the close.
What might gap it overnight
Corporate Announcements shows filings by timing — during the session, after the close or before the open.
Market direction into the close
Index Trend shows whether the market is trending, a key input for overnight risk.
Pro subscribers also receive the Daily Digest, and the BreakPoint mobile app lets you check announcements before the next morning’s open.
Short-term traders
Suits traders who want next-morning moves and can exit early.
Part-time traders
Last-hour selection and early-morning exits can fit around a job — if you can act at the open.
Beginners
Understand settlement and gap risk before trying it; start very small.
Not for
Anyone who cannot accept that a gap can bypass their stop-loss.
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BTST stands for buy today, sell tomorrow. You buy shares in one session and sell them in the next session, before they are credited to your demat account under T+1 settlement.
BTST carries overnight gap risk and short-delivery risk, so it is not low-risk. Careful selection, small size and early exits reduce but do not remove these risks.
If the original seller fails to deliver, your sale cannot be delivered either. The exchange conducts an auction for your buyer, and if that fails the trade is closed out as per exchange rules, which can result in a loss.
Intraday positions are closed the same day and have no overnight risk. BTST positions are held overnight, carry gap and short-delivery risk, and are generally charged like delivery trades.
BTST trades are generally charged similarly to delivery trades, including applicable taxes and depository charges. Check your broker’s current fee schedule.
Traders commonly look in the last hour for liquid stocks closing near their highs with a clear reason for strength and no major overnight event, then size for a possible gap down.
No. Brokers often restrict BTST in categories such as trade-for-trade stocks, and stocks at circuit limits can be hard to exit. Check your broker’s rules.
STBT (sell today, buy tomorrow) is the short-side equivalent. In the cash market it is limited by delivery rules, so traders typically use futures or other permitted instruments for overnight short positions.
Check who is closing strong on Market Mover and what is due overnight in Corporate Announcements before any overnight position.
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Terms used here: Gap Up / Gap Down · Swing Trading · Position Sizing · Stop-Loss · Liquidity
This article is for education only. It is not investment advice or a recommendation to buy or sell any security. Trading involves risk of loss; examples are hypothetical and past behaviour of any pattern does not guarantee future results.