BTST (Buy Today Sell Tomorrow): Mechanics, Charges, Rules & Strategies That Work
Author
Editor
BTST (buy today, sell tomorrow) is a short-term trading strategy that allows traders to capture overnight price movement in stocks. BTST trading gained popularity in India after the electronic systems made settlement faster. This strategy gained further momentum after the introduction of the T+1 settlement cycle on January 1, 2022 which reduced the settlement cycle from two trading days to one.
In 2012, an academic research by Henk Berkman, Paul Koch, Laura Tuttle, and Ying Zhang on Overnight Returns and the Hidden Cost of Buying at the Open found that a significant portion of stock market returns is earned during the overnight (close-to-open) period. In this blog we will learn how BTST works, its settlement mechanics, charges, broker rules, risks, and practical strategies to trade it successfully.
What Is BTST Trading?
BTST (buy today, sell tomorrow) is a style of short-term trading where we buy today (T day) and sell it the next day (T+1) before the share gets credited in our demat account. We typically use this strategy to capture the price movement that has happened overnight. This strategy is also known as ATST ((Acquire Today, Sell Tomorrow).
Why the BTST Window Exists: T+1 Settlement Explained
The BTST window exists because of the T+1 settlement cycle used in the Indian stock market. According to the T+1 settlement cycle, your bought share will be legally transferred to your demat account one day after the day you have placed the buy order. Because of this one-day gap between your purchase and settlement is what makes BTST possible.
In January 2023, India moved from T+2 settlement to T+1 settlement cycle for the entire equity cash market.
What Are T1 Holdings?
T1 holdings are shares that you have purchased today but have not yet been credited to your demat account because the T+1 settlement process is still pending. They appear separately in your broker’s portfolio as T1 holdings or unsettled holdings.
Early Pay-In (EPI): The Mechanism Behind Every BTST Rule
Early Pay-In (EPI) is an operational mechanism or a process that actually makes your BTST trade possible. In this process the broker ensures that shares are available to fulfill your sell order, even if they have not yet been credited to your demat account.
Let’s understand the Early Pay-In (EPI) mechanism in four simple steps.
- Day 1: Today you bought 100 shares, but it will get settled or reach to your demat account on the next working day.
- Day 2: These shares are reflected as T+1 holding in your demat account. Now you sell this T+1 holding.
- Broker uses EPI: The broker sends an instruction to the clearing corporation/depository to earmark or transfer the shares for settlement early, instead of waiting for the normal settlement credit.
Your BTST sale settles, the shares are used to meet your delivery obligation from the sale.
How a BTST Trade Works, Day by Day with Example
A BTST trade works in five simple steps which involves, identifying the stock, placing buy orders, waiting until next day, selling the stock next, and completion of settlement.
- Day 1 (Select a BTST-Eligible Stock): Select BTST eligible stock that are highly liquid and have high trade volume. Stocks from the T2T segment are usually not eligible for BTST trading. On Aug 10, 2026 we found one BTST opportunity in MCX stock. The stock gave a strong breakout of resistance trendline with a good volume.
- Place a Delivery Buy Order: Buy the selected stock using CNC (Cash & Carry) or Delivery order type before the market closes at 3:30 PM. In our case, we bought MCX stock at 3:00 PM at ₹2780 using CNC order type.
- Day 2 (Wait Until the Next Trading Day): The shares will now reflect as T1 holding in your demat account, meaning shares are not yet credited in your demat account but you can still sell them using BTST.
- Sell the T1 Holding: On the next trading day, sell your T1 holding and your broker will use the Early Pay-In (EPI) mechanism to complete the settlement. We sold your MCX stock at 12 PM.
- Receive the Sale Proceeds: After you sell the share, trade gets settled on T+1 and sale proceeds gets credited to your trading account after settlement.
Hence, a BTST is just a normal CNC buying of stock and selling it the next day. There is no dedicated BTST order type. As long as the stock is eligible and your broker supports BTST, the settlement is handled automatically through the Early Pay-In (EPI) mechanism.
| BTST trade summary table | |
| Detail | Value |
| Stock | MCX |
| Buy | ₹2,780 at 3:00 PM |
| Sell | ₹2,849 at 12:00 PM next day |
| Investment | ₹2,780 |
| Gross Profit | ₹69 |
| Return | 2.48% |
| Order | CNC |
| Settlement | T+1 via EPI |
BTST Trading Formula that Expert Traders Use
There is no single official formula that experts use to trade BTST, instead they follow a set of checklists before entering in BTST trade. Let’s briefly discuss five common checklists an expert BTST trader uses.
- Cover your costs: Make sure that the profit you make is enough to cover brokerage, taxes, and slippage.
- Strong momentum: Strong momentum such as high trading volume, high RSI level (55-70), or price trading above key moving average, etc.
- Good risk-reward: AIm for at least 1:2 risk to reward.
- High liquidity: Trade only those stocks that have high trading volume to reduce the execution risk.
- Proper position sizing: Risk only 0.5 to 2% of your entire trading capital in a single BTST trade.
Our Backtesting Result with BTST
We, at Strike Money have manually backtested 100 BTST trades to evaluate whether the strong price action and above-average volume could identify stocks likely to continue higher the next trading day.
Our strategy was to identify Marubozu candles with more than 4% move with above average volume, allowing a small wick.
Backtest Setup
| Backtest Parameter | Details |
| Strategy Tested | BTST using 4% Marubozu + volume |
| Market | NSE-listed stocks |
| Patterns Tested | 100 |
| Timeframe | Daily chart |
| Trade Direction | Long |
| Candle Condition | Marubozu candle; small wick allowed |
| Volume Condition | Volume above 20-day average |
| Entry Rule | Buy around 3:00 PM |
| Exit Rule | Sell at 10:00 AM the next trading day |
| Additional Filter | Monthly RSI above 60 |
| Holding Period | Overnight |
Backtest Logic
- Look for monthly RSI above 60.
- Look for a 4% Marubozu candle on the daily chart near the end of the trading session.
- A small wick is allowed.
- Volume should be more than 20-day average volume.
- Buy the stock around 3:00 PM and hold overnight.
- Sell around 10AM the next day.
- Record the outcome.
Backtest Result Summary
| Metric | Marubozu + Volume | + Monthly RSI > 60 |
| Total Trades Tested | 100 | 100 |
| Winning Trades | 53 | 56 |
| Losing Trades | 47 | 44 |
| Win Rate | 53% | 56% |
| Average Winning Trade | 0.5%–1% | 1%–1.2% |
| Total Trades Tested | 100 | 100 |
| Winning Trades | 53 | 56 |
Key Findings
Adding monthly RSI above 60 made the setup more selective by reducing weaker setups and the overnight gap remained the biggest uncontrolled risk.
BTST vs ATST vs STBT
The difference between BTST, ATST and STBT is briefly discussed below in the table.
| Feature | BTST (Buy Today, Sell Tomorrow) | ATST (Acquire Today, Sell Tomorrow) | STBT (Sell Today, Buy Tomorrow) |
| Full Form | Buy Today, Sell Tomorrow | Acquire Today, Sell Tomorrow | Sell Today, Buy Tomorrow |
| Trade Sequence | Buy first, sell the next day | Buy first, sell after one or more days | Sell first, buy back later |
| Typical Holding Period | 1 trading day | More than 1 day | 1 trading day |
| Market View | Bullish | Bullish | Bearish |
| Delivery Required Before Selling? | No (T1 holdings can be sold if broker allows) | Yes, shares are credited to the demat account before selling | Not allowed in the cash equity market without borrowing shares |
| Availability in Indian Cash Market | Yes | Yes | No |
| Settlement | Uses T+1 settlement and Early Pay-In (EPI) | Normal T+1 settlement | Possible only through F&O or the Stock Lending and Borrowing (SLB) mechanism |
| Main Risk | Overnight gap risk and short delivery | Overnight market risk | Unlimited loss potential if the price rises |
| Best Suited For | Traders expecting next-day momentum | Investors and swing traders | Traders with a bearish view using derivatives |
BTST vs Intraday vs Delivery vs Swing Trading
The differences between BTST vs Intraday vs Delivery vs Swing Trading are briefly discussed below in the table.
| Aspect | Intraday | BTST | Delivery | Swing Trading |
| Holding Period | Same day | 1–2 days | Days to years | Few days to weeks |
| Position Closed | Before market close | Before T+1 settlement | Anytime | Based on trade setup |
| Shares Credited to Demat | No | No | Yes | Yes |
| Margin / Leverage | High (broker-dependent) | Full purchase value required | Full purchase value required | Full purchase value required |
| Brokerage & DP Charges | Brokerage only (no DP charges) | Delivery brokerage, no DP charges | Delivery brokerage + DP charges on sell | Delivery brokerage + DP charges on sell |
| Main Risk | Intraday volatility | Overnight gaps & short-delivery risk | Long-term market/company risk | Overnight & weekend gap risk |
| Best For | Day traders | Overnight momentum traders | Long-term investors | Trend-following traders |
The Real Cost of a BTST Trade
The real cost of BTST trade includes brokerage, taxes, exchange charges, DP charges, and settlement risk.
| Charge | Rate | Notes |
| STT (Securities Transaction Tax) | 0.1% on buy value + 0.1% on sell value | Charged as a delivery trade in most cases; this is the single biggest statutory cost |
| Brokerage | ₹0–20 flat, or 0.1–0.5% of turnover | Many discount brokers waive brokerage on CNC/BTST trades; full-service brokers usually charge a percentage |
| Exchange transaction charges | ~0.00297% (NSE), ~0.00375% (BSE) | Roughly ₹2.97 per lakh on NSE |
| SEBI turnover fee | ~₹10 per crore | Negligible but present on every trade |
| GST | 18% | Applies on brokerage + exchange charges + SEBI fee combined |
| Stamp duty | State-dependent | Charged on the buy side only |
| DP (Demat) charges | ₹13–13.5 + 18% GST | Per stock, per day, charged because shares pass through your demat account even briefly |
Suppose we bought 100 shares at ₹500, which makes ₹50,000 as total buying cost. On the next day you sold those shares for ₹520, that makes our total selling price ₹52,000. This makes our gross profit of ₹2,000.
Let’s now calculate the total trading cost for executing this BTST trade.
| Charge | Approx. Amount |
| STT (Buy + Sell) | ₹102 |
| Exchange Transaction Charges | ₹17 |
| SEBI Turnover Fees | ₹0.20 |
| GST | ₹3 |
| Stamp Duty (Buy Side) | ₹7.50 |
| DP Charges | ₹16–₹20 |
| Total Cost | ≈ ₹145–₹150 |
| Net profit | ₹2,000 – ₹150 = ₹1,850 |
As you can see, our net profit comes to ₹1,850 after reducing the total trading cost. This means we need stock to move about 0.30% (≈₹1.50 per share) just to recover your trading costs.
However, if you are using a full service broker, you will pay 0.30% brokerage per side. In this scenario, you need stock to move about 1% to recover your trading costs.
Hence brokerage and other trading costs can really eat up your profits if you are trading only for 0.5 — 1% overnight gains.
Why STT on a BTST Sell Is 0.1%, Not 0.025%
STT on a BTST sell is 0.1% because it is a delivery based trade not an intraday trade. Even though you sell the shares before they are credited to your demat account, the transaction still results in the transfer of ownership through the normal settlement process.
| Trade Type | STT on Buy | STT on Sell |
| BTST (Delivery Trade) | 0.1% | 0.1% |
| Intraday Equity Trade | Nil | 0.025% |
STT is charged based on settlement type, not holding period. Once the shares are transferred in your demat account, delivery based STT charge triggers, regardless of whether you sell them a year later or the very next morning.
Do BTST Trades Attract DP Charges?
Yes, BTST trading attracts DP charges because BTST trading is delivery based trading, which means shares are being credited and debited from your demat account, and during this condition DP charges usually apply. The DP charge is levied when shares are debited from your demat account to complete the sell transaction.
The DP charges vary across the broker, where discount brokers usually charge around ₹15–₹20 + GST, while full-service brokers may charge ₹20 to ₹35. However, DP charges are applied regardless of quantity sold, meaning whether you sell 10 shares or 1000 shares, you will be charged the same flat amount.
Your BTST Breakeven: How Far Must the Stock Move?
For a BTST trade using a discount broker, the stock should move roughly 0.22%–0.4% just to get to the breakeven point. The formula to calculate the breakeven move in BTST trade is mentioned below.
Breakeven (%) = (Total Trading Costs ÷ Buy Value) × 100
Where total trading cost includes STT (buy + sell) + exchange transaction charges (both legs) + stamp duty (buy side) + DP charges (flat, per stock per day) + brokerage + GST on brokerage/exchange/SEBI fees.
As STT, exchange charges, and stamp duty scale with trade size, but DP charges are a flat ₹13–16 regardless of size, breakeven percentage shrinks as trade size grows.
| Trade Value | STT (0.2%) | Stamp Duty (0.015%) | Exchange + SEBI + GST | DP Charge | Total Cost | Breakeven Move |
| ₹10,000 | ₹20.00 | ₹1.50 | ₹0.60 | ₹16 | ₹38.10 | 0.38% |
| ₹50,000 | ₹100.00 | ₹7.50 | ₹3.00 | ₹16 | ₹126.50 | 0.25% |
| ₹1,00,000 | ₹200.00 | ₹15.00 | ₹6.00 | ₹16 | ₹237.00 | 0.24% |
| ₹5,00,000 | ₹1,000.00 | ₹75.00 | ₹30.00 | ₹16 | ₹1,121.00 | 0.22% |
However, if you are using a full service broker, where they charge 0.3% brokerage per side, it can push your breakeven from around 0.24% to nearly 0.84%.
Why You Can’t Use BTST Sale Proceeds the Same Day
You can’t use BTST sale proceeds on the same day because the sell trade has not yet been settled. Even though your sell order is executed immediately, the money is released only after the trade completes its T+1 settlement cycle. So if you sell on Tuesday, the funds typically become available Wednesday, not the same evening.
During this one day (T+1 day), exchange matches your order Match your trade with the buyer.
- Transfer the shares to the buyer.
- Transfer the sale proceeds to your broker.
- Credit the money to your trading account.
This entire process takes one trading day (T+1).
This settlement process applies to all delivery-based share sales, whether you are:
- Selling shares through BTST,
- Selling shares you bought a week ago, or
- Selling shares you’ve held for several years.
The difference is that BTST feels more restrictive because you buy on one day, sell on the next, and then have to wait another day before the sale proceeds become available.
Short Delivery, Auction & Close-Out: The Risk Nobody Quantifies
BTST trading carries a smaller execution risk known as short delivery. This risk appears when the seller from whom you bought the shares fails to deliver them to the exchange on settlement day. Since you are trading BTST, you need those shares to be delivered to sell it back. This risk is a short delivery risk and exchanges have to find another way to complete your transaction.
During this scenario, exchanges conduct an auction to purchase the missing shares from other market participants. Now two major scenarios can happen here, either auction gets successful or fails.
- Auction Successful: The exchange buys the missing shares in the auction and your BTST trade settlement is carried out normally. In this case the defaulting seller bears the auction cost and penalty.
- Auction Fails: If the exchange does not get the shares in auction, the exchange performs a close-out. In this case the buyer is compensated with cash based on the exchange’s close-out rules.
But you don’t have to worry if you are trading in highly liquid stocks. Such problems occur rarely, especially in illiquid stocks or stocks under surveillance, or during periods of extreme market volatility.
Which Stocks Are BTST-Eligible and Which Are Blocked
Stocks from regular EQ series (NSE) and Group A, B (BSE) stocks with normal rolling settlement are generally eligible for BTST trading. Whereas stocks that are highly illiquid and carry settlement risk are generally not allowed for BTST trades.
BTST trade is not allowed in stock that falls under the following mentioned categories.
- Trade-to-Trade (T2T) Stocks: Compulsory delivery is required, so BTST is not allowed.
- Illiquid Stocks: Low trading volume increases the risk of short delivery and auction.
- ASM or GSM Stocks: Higher surveillance due to unusual price or volume movements.
- Stocks Hitting Upper/Lower Circuits: Difficult to buy or sell, increasing settlement risk.
- Recently Listed IPO Stocks: Some brokers temporarily restrict BTST because of high volatility.
- Broker-Restricted Stocks: Brokers may block BTST based on their own risk management policies.
Brokers usually block such stocks to reduce the risk of short delivery. Hence, before BTST trade, you should check your broker’s BTST eligibility list and verify whether the stock is in the Trade-to-Trade (T2T), ASM, or GSM category.
Margin & Fund Requirements for BTST
Since BTST is a delivery based trade, you need to have a full amount to buy the shares. Unlike intraday trading, you cannot rely on high leverage to take a BTST position. When you sell them the next day (before they are credited to your demat account), your broker may also block 20–40% of the position value as margin until the trade is settled.
| Trade Leg | Margin Required | Reason |
| Buy (Day 1) | 100% of the trade value | BTST is a delivery trade, and SEBI does not allow leverage for cash-market delivery trades. |
| Sell (Day 2 – T1 Holdings) | Around 20–40% of the position value | The shares are not yet fully settled, so the broker blocks margin to cover settlement risk until completion. |
If you fail to maintain the required margin, the exchange will impose a peak margin penalty ranging from 0.5% to 5% of the shortfall amount per day, depending on the size and frequency of the shortfall, plus 18% GST on the penalty.
How to Place a BTST Order
You can place a BTST order just like you place a regular delivery order. There is no dedicated button to do a BTST trade in any Indian broker’s platform. You just buy the stock using CNC (Cash and Carry) product type, and on the next day, you sell the same shares using CNC before the shares get settled.
Indian Brokers BTST Policies Compared
The basic BTST process is largely the same across major Indian brokers, which is to buy the stock through delivery/CNC, sell the T1 holding on the next trading day, and the broker handles settlement through EPI. However, the brokers policy differs only for the number of stocks they allow to trade for BTST.
Taxation of BTST Profits
BTST profits are usually taxed as Short-Term Capital Gains (STCG) at a flat 20% under Section 111A, because BTST trading is delivery based trading, where you hold the stocks for less than 12 months. However, if you trade BTST very frequently as your primary activity, the Income Tax Department may classify the profits as business income instead.
Does T+0 Settlement Kill BTST?
No, T+0 settlement will not kill BTST trading, instead it will just reduce the need for BTST. BTST trading exists because of T+1 settlement, if stocks start getting settled on the same day (T+0), the settlement gap will largely disappear.
However, most of the Indian stocks will still follow the T+1 settlement cycle going forward, so BTST remains available for the vast majority of stocks.
BTST Strategies That Actually Have an Edge
Strategies that identify situations where the probability of a favorable gap is higher than usual, usually have an actual edge for BTST trading. There are four
- Strong Closing Strength Strategy: When stock closes near their day’s highest price with a strong volume, it indicates a strong buying momentum. There is a high probability that this buying momentum will continue when the market opens the next day. As you can see in the chart below, we identified a strong green candle breaking out of resistance and closing near its high. We entered BTST trade at the closing time and got an 8.89% move the next day.
- Volume-Confirmed Breakout Strategy: When the stock breaks above the key resistance level, especially in the last hour of a trading session with a strong volume, the probability of next day’s positive move or gap up opening increases. This exact same setup we saw in Tata Technologies Limited, where stock gave a breakout of a key resistance level with a 6.31% move and a strong volume. We entered BTST trade at day’s end and the next day we saw a 8.89% move where we captured 3%.
- Earnings or News-Based Strategy: During events like quarterly results, dividend announcement, bonus or stock splits, government policies or other major company news can affect prices to move significantly up. In Coforge Limited stock, we observed a strong gap-up green candle of 2.94% on the day before earning day. Looking at this positive sentiment, we entered BTST trade where the stock opened gap-up the next day giving us a 10.13% move.
- Gap-and-Go Strategy: When stock opens gap-up and continues trading higher and closes near its high. We can consider this buying momentum good for BTST trading. As you can see in the chart below, we had a hammer candle pattern formation followed by two gap up openings and strong closing. This shows a strong momentum, hence we entered BTST trade on the second gap-up candle.
How to Screen for BTST Candidates
There are four simple steps to screen stocks for BTST trading. The steps are briefly discussed below.
- Choose Liquid Stocks: Avoid T2T (Trade-to-Trade) stocks or illiquid stocks and select stocks with high trading volume so you can easily buy and sell them. To make it simple, you can select stocks from the FnO basket.
- Avoid Stocks with events: Events like bonus issue, stock split, right issue,merger or demerger can cause sudden price adjustments that have nothing to do with normal market movement.
- Look for High Volume: Select stocks with higher-than average volume. High volume shows that many traders and investors are participating, making the price move more reliable.
- Prefer a Strong Closing Price: Choose stocks that close near the day’s high showing a strong buying interest until the market closes.
- Check the Overall Market Trend: BTST works better if the overall market and stock specific sectors are strong.
- Use Momentum Indicators (Optional): Momentum indicators like RSI and MACD can be used as a filter. RSI crossed above 60 or MACD giving bullish crossover.
You can easily filter out stocks based on above mentioned criteria using screeners like Strike Money, CHarting, Screener, etc.
As you can see in the above screen shot, we have easily filtered out stocks with gap up and highest volume from the Nifty 500 basket, suitable for BTST trades.
When to Exit: The First Thirty Minutes Problem
BTST traders often face the problem regarding when to actually exit the trade. Since the first 30-min in the market (9:15 AM–9:45 AM) is highly volatile due to overnight news, global cues, and large buy and sell orders, it is very difficult for BTST traders to decide when to exit.
During this phase (First Thirty Minutes), you usually have two choices, either to exit trade immediately and lock in the overnight profit or wait for a while in case the stock moves even higher.
But when do you actually exit? Well, there is no single method or timeframe to exit the BTST trade. Professionals usually follow the following steps to judge when to exit.
- Exit immediately if the stock opens at or above your target price.
- Wait for the first 15–30 minutes if the opening price is highly volatile and you want to avoid selling into a temporary spike or dip.
- Exit if your stop-loss is hit, even if it happens soon after the market opens.
- Stick to the exit plan you made before the market opened instead of making emotional decisions after seeing the opening price.
Hence, there is no perfect criteria to decide whether you should sell immediately or wait for the first 30 minutes. Both choices have their own advantages and disadvantages. What you can do is decide your exit plan before entering the BTST trade and follow it consistently, instead of reacting emotionally after the market opens.
Is BTST Legal, Safe and Right for Beginners?
Yes, BTST is legal in India and this facility is offered by almost all the brokers in India. However, it is not an easy or safe style of trading, especially for beginners. In order to trade BTST, you should first understand how settlement, short delivery, and overnight gaps work.
5 mins
