Best Intraday Trading Rules for Indian Markets

What Intraday Trading Actually Demands in Indian Markets

Intraday trading means you open and close the same position within a single NSE or BSE session, between 9:15 am and 3:30 pm, so you never carry overnight risk. In return for that safety you accept higher leverage, faster decisions, and a cost structure where brokerage, STT, exchange charges and GST quietly eat a real chunk of every trade. The rules below are not motivational slogans. They are the specific, testable habits that separate traders who survive a year from the roughly nine out of ten F&O traders that SEBI's own studies found lose money.

The single biggest mental shift is this. Your job is not to predict the market. Your job is to manage risk so that being wrong is cheap and being right is meaningful. Every rule on this page exists to keep your average loss smaller than your average win. A trader who wins 45 percent of the time but keeps losses at half the size of wins will end the year ahead. A trader who wins 70 percent of the time but lets a few losers run will not.

Below we work through the core rules and then walk a real Nifty intraday trade from entry to exit, with the actual lot size, points captured, charges deducted and the net rupee result. Every number is illustrative and uses realistic but assumed price levels. Nothing here is a promise of returns. Confirm live contract specs, margins and rates on the NSE and your broker before you trade.

Rule 1: Size the Position From the Stop, Never the Other Way Round

Beginners decide how many shares or lots to buy first, then look for a stop. Professionals reverse it. You decide the maximum rupee loss you will accept, you find the technically correct stop level, and the distance between entry and stop tells you the position size. The position size is the output, not the input.

Say your capital is Rs 5,00,000 and you risk 1 percent, so Rs 5,000 per trade. You want to buy Reliance at Rs 1,420 with a stop at Rs 1,408, a stop distance of Rs 12. Your share quantity is 5,000 divided by 12, which is about 416 shares. If the stop were tighter at Rs 1,415, distance Rs 5, you could hold 1,000 shares for the same Rs 5,000 risk. Same risk, very different size. This one discipline removes the most common way intraday accounts blow up, which is taking a position so large that a normal move against you wipes out a week of gains.

Rule 2: Put a Hard Stop in the System, Then Do Not Touch It

A mental stop is the lie traders tell themselves. Under pressure the brain finds reasons to wait one more candle, and one more candle is how a Rs 12 loss becomes a Rs 40 loss. The moment your entry fills, place a stop-loss order (SL or SL-M) in the broker terminal so the exit is mechanical. With SEBI's peak-margin framework now fully phased in, you also cannot casually add to a losing intraday position to lower your average, because the extra margin is blocked upfront. The system is forcing the discipline that you should already have.

• Use SL-M (stop-loss market) for liquid instruments like Nifty, Bank Nifty and large-cap stocks so the exit triggers reliably even in a fast move.
• Use SL (stop-loss limit) only when you accept the risk that price gaps through your limit and the order does not fill.
• Never widen a stop once it is placed. Widening a stop to avoid a loss is the single most expensive habit in intraday trading.
• You may trail a stop in your favour to lock profit, but you never move it further away from price.

Rule 3: Trade the Hours That Pay, Avoid the Hours That Trap

The Indian session has a rhythm. The opening 90 minutes, roughly 9:15 am to 10:45 am, carries the highest volume and the cleanest directional moves as overnight news and global cues get priced in. The closing hour from 2:30 pm onward often delivers a second trending move as positions are squared and the next day is positioned. The middle of the day, broadly 11:30 am to 1:30 pm, is usually low volume and choppy. Ranges are tight, fakeouts are common, and stops get hit on noise that means nothing.

Most consistent intraday traders take the bulk of their trades in those two high-activity windows and sit on their hands during lunch. Doing nothing is a position. If your strategy needs a real trend to work, do not feed it the part of the day that has none.

Rule 4: Count the Real Cost of Every Trade

Many intraday traders calculate profit on price alone and forget that costs decide whether a small winner is actually a winner. For intraday equity you pay STT of 0.025 percent on the sell side, brokerage (often a flat Rs 20 per executed order at discount brokers, or zero at some), exchange transaction charges, SEBI charges, stamp duty on the buy side, and 18 percent GST on brokerage plus transaction charges. For options you pay STT of 0.1 percent on the sell-side premium, and for index futures STT of 0.02 percent on the sell side. These rates changed on 1 October 2024, so always confirm the current figure.

The tax point matters and is widely misunderstood. Because intraday equity is speculative business income and F&O is non-speculative business income, your profits are added to your total income and taxed at your slab rate. There is no 20 percent short-term capital gains rate and no 12.5 percent long-term rate here. Those rates apply to delivery-based equity that you actually held, not to positions squared off the same day.

A Real Nifty Intraday Trade, Worked End to End

Here is a complete, illustrative intraday trade on the Nifty 50 index using a near-month future, with one lot, the current lot size of 65, realistic levels and every charge accounted for. Assume the date is a normal trending Tuesday.

• Instrument: Nifty 50 near-month future, lot size 65 (one lot equals 65 units).
• Setup: Price opens, pulls back to the previous day VWAP and the 9:15 am to 9:45 am opening range high holds as support. A bullish reversal candle prints on the 15-minute chart at 10:05 am.
• Entry: Buy 1 lot at 24,180 (the break above the opening-range high).
• Stop-loss: 24,130, placed as SL-M immediately. That is 50 points of risk.
• Target: 24,300, a prior-day resistance and a clean 120 points, giving a reward-to-risk of 2.4 to 1.
• Rupee risk if stopped: 50 points times 65 equals Rs 3,250 before charges.

Assume the trade works. Nifty grinds up through the morning and you exit at your target of 24,300 at 12:10 pm. You captured 120 points. The gross profit is 120 times 75, which equals Rs 9,000. Now subtract realistic costs. STT on a Nifty future is 0.02 percent on the sell side only, so on a sell value of 24,300 times 75 equals Rs 18,22,500, STT is about Rs 365. Brokerage at a flat Rs 20 per side is Rs 40 for the round trip. Exchange transaction charges, SEBI charges and stamp duty together add roughly Rs 70 to Rs 90 on this size. GST at 18 percent on brokerage plus transaction charges adds a few more rupees. Total charges land near Rs 490 to Rs 520 on this round trip.

So your net profit is approximately Rs 9,000 minus Rs 510, which is about Rs 8,490 for one lot on this single trade. If the trade had failed and hit your 24,130 stop instead, you would have lost 50 points, Rs 3,750 gross, plus a similar Rs 500 in charges, for a net loss near Rs 4,250. Notice the structure. Your planned win of about Rs 8,490 is roughly double your planned loss of about Rs 4,250. That asymmetry, not a magic indicator, is what makes the strategy survivable across many trades. These figures are illustrative and assume the stated levels actually occur.

Rule 5: Define Entry, Stop and Target Before You Click, Every Time

The Nifty example above had all three numbers fixed before the order went in. That is the standard, not a special case. If you cannot state your entry trigger, your stop level and your first target out loud before entering, you do not have a trade, you have a hope. Writing the three levels down also gives you something concrete to journal afterwards, so you can separate a good decision that lost from a bad decision that happened to win.

• Entry trigger: the specific price or signal that puts you in, such as a break above the opening-range high.
• Stop level: where the idea is proven wrong, placed in the system as SL or SL-M.
• First target: a logical resistance or a fixed reward-to-risk multiple where you book at least part of the position.
• Reward-to-risk: aim for at least 1.5 to 1, ideally 2 to 1 or better, so you can be wrong often and still profit.

Rule 6: Pick Liquid Instruments and Read the Order Book

Liquidity is your exit insurance. In a deep market you can get out near your intended price even when you are in a hurry. In a thin stock your stop-loss can trigger and fill several rupees worse than your level because there simply are not enough buyers at your price. For intraday work, stick to index futures and options on Nifty, Bank Nifty, FinNifty and Sensex, and to large-cap stocks like Reliance, HDFC Bank, TCS and Infosys that trade tens of lakhs of shares a day.

Glance at the market depth, the five best bid and ask levels, before you enter. If the quantities at each level are thin and the gap between bid and ask (the spread) is wide, expect slippage. Wide spreads are a hidden cost on top of brokerage and STT, and they hurt most on the exit, which is exactly when you have the least control.

Rule 7: Respect Expiry Mechanics Before You Trade Options

If you trade index options intraday, expiry day behaviour is its own beast. Index weekly and monthly expiries are settled in cash against the index settlement value, and an option that is out of the money at the close expires worthless. On expiry day, time decay (theta) is brutal, so an out-of-the-money option you buy in the morning can lose most of its value by afternoon even if the index barely moves against you. Premiums on expiry can swing violently on small index moves, which is why disciplined position sizing matters even more than on a normal day.

Worked option example, illustrative. You buy one lot of a Nifty 24,200 call at a premium of Rs 60 on expiry morning. Lot size is 65, so your cost is 60 times 75 equals Rs 4,500 plus charges, and that Rs 4,500 is your maximum loss, a real advantage of buying options. Nifty rallies and the call rises to Rs 95. You sell, capturing 35 points of premium, 35 times 75 equals Rs 2,625 gross. STT on options is 0.1 percent on the sell-side premium, so on a sell value of 95 times 75 equals Rs 7,125, STT is about Rs 7, with brokerage and other charges adding maybe Rs 50 to Rs 70. Net profit is roughly Rs 2,550 on the lot. Had Nifty drifted sideways into expiry instead, theta could have decayed that Rs 60 call toward Rs 20 or lower, and you would have wanted your stop out long before zero.

Rule 8: Cap Your Daily Loss and Walk Away

The most disciplined per-trade risk still fails if you take fifteen trades on a bad day. Set a daily loss limit, commonly two to three times your single-trade risk, and when you hit it you stop for the day. No revenge trades, no doubling size to win it back. Revenge trading after a string of losses is the fastest known route to a margin call. The market reopens tomorrow with the same opportunities and a calmer you.

• Set a hard daily loss cap, for example 2 percent of capital, and honour it without negotiation.
• Set a sensible cap on number of trades per day so boredom does not turn into overtrading.
• Square off your own positions before the broker auto-square-off near 3:15 pm to 3:20 pm, since auto-exits fill at market and often at the worst price.
• After a big win, consider stopping too. Euphoria leads to oversized trades just like anger does.

Rule 9: Journal Every Trade and Review Weekly

A trading journal is where intraday trading stops being gambling and becomes a measurable skill. Record the instrument, your entry, stop and target, the reason you took the trade, the actual exit, and how you felt. Over a few weeks the patterns become obvious. Maybe your morning trades make money and your post-lunch trades lose it. Maybe you win when you follow your plan and lose when you chase. You cannot fix what you do not measure, and an honest journal measures it for you.

Review weekly, not just daily. Daily results are noisy. Across twenty or thirty trades you can see your true win rate, your average win versus average loss, and whether your reward-to-risk discipline is holding. That is the dashboard that tells you if your edge is real or if you have just been lucky.

Sources and Further Reading

For authoritative data and current rules on charges, margins and contract specifications, refer to SEBI (Securities and Exchange Board of India), NSE India and Zerodha Varsity. STT rates, lot sizes and margin rules change, so always confirm the live figure on the official source before you trade. All numeric examples on this page are illustrative and are not a promise of returns.

Sources and Further Reading

For authoritative data and further reading on this topic, refer to SEBI (Securities and Exchange Board of India), NSE India and Zerodha Varsity. Always confirm current rules, rates and contract specifications on the official source before you trade.