Indian Equity Trading Costs

The Myth of "Zero Cost" Trading

In the age of discount brokers, you'll often see advertisements for "zero brokerage" trading. While the brokerage fee itself might be zero for certain types of trades, it's a common misconception to think that trading is free. Several other mandatory charges and taxes are levied on every transaction.

To get a quick sense of this, watch the introductory part of the following video from the Labour Law Advisor channel. It effectively debunks the idea that your gross profit from a trade is what you actually take home.

As the video points out, a multitude of small charges—levied by the government, the regulator, and the exchanges themselves—collectively create a "cost hurdle" that every trade must overcome to be profitable. Let's now systematically dissect each of these costs.

Deconstructing Transaction Costs

Every trade involves several charges that are calculated based on the transaction's value, or "turnover."

Turnover is the total monetary value of a transaction.

• Buy Turnover = Buy Price × Quantity
• Sell Turnover = Sell Price × Quantity
• Total Turnover = Buy Turnover + Sell Turnover

Most charges are levied as a small percentage of this turnover. An excellent, comprehensive guide to these charges is provided by Angel One. We will use it as our primary reference.

Now that you have an overview, let's consolidate this information and organize it from a quantitative perspective. For this, the documentation of a Python brokerage calculator on GitHub is particularly useful, as it presents the information in a structured, programmatic way.

The Anatomy of a Trade's Cost

Let's synthesize what we've learned from these resources into a clear structure. The costs can be grouped into several categories. We'll focus on Equity Intraday (buying and selling the same stock on the same day) and Equity Delivery (holding a stock for more than one day).

Here is a breakdown of the key charges for a trade on the NSE:

1. Brokerage:

   • Charged by your stockbroker (e.g., Zerodha, Angel One).
   • Delivery: Typically ₹0 with discount brokers.
   • Intraday: A percentage of turnover (e.g., 0.03%) or a flat fee (e.g., ₹20) per executed order, whichever is lower. This min(percentage, flat_fee) logic is important for modeling.

2. Securities Transaction Tax (STT):

   • A direct tax levied by the central government.
   • Delivery: 0.1% on both buy and sell turnover.
   • Intraday: 0.025% on the sell side only.

3. Exchange Transaction Charge:

   • Charged by the stock exchange (NSE/BSE) for using their platform.
   • For NSE, it's approximately 0.00325% on both buy and sell turnover for both intraday and delivery.

4. SEBI Turnover Charges:

   • A fee charged by the market regulator, SEBI.
   • ₹10 per crore of turnover (which is 0.0001%) on both buy and sell.

5. Stamp Duty:

   • A state government tax, now standardized across the country for securities.
   • Delivery: 0.015% on the buy side only.
   • Intraday: 0.003% on the buy side only.

6. Goods and Services Tax (GST):

   • An indirect tax. Crucially, it is not levied on the trade's turnover.
   • It is calculated at 18% on the sum of (Brokerage + Exchange Transaction Charge + SEBI Fees).

7. Depository Participant (DP) Charges:

   • This applies only to delivery trades.
   • When you sell shares held in your Demat account, a flat fee is charged by the Depository (CDSL/NSDL) and your broker. This is a fixed amount (e.g., ₹13.5 + GST) per company (scrip) sold, regardless of the number of shares or their value. It is charged only on the sell leg.

The output from a typical online brokerage calculator, like the ones shown below, summarizes these charges. Notice how STT is a significant component of the total cost.

This is an example of a brokerage calculator for an intraday trade. Note the breakdown of costs, including Brokerage, STT, Transaction Charges, and GST.

This example shows the cost breakdown for an equity delivery trade. The charges are calculated on the total turnover and contribute to the final Net P&L.

A Worked Example: Intraday vs. Delivery

Let's solidify this with a concrete calculation. Assume you execute the following round-trip trade on the NSE using a discount broker that charges a maximum of ₹20 for intraday brokerage and zero for delivery.

• Buy: 100 shares @ ₹1,000
• Sell: 100 shares @ ₹1,050

Gross Profit = (₹1,050 - ₹1,000) × 100 shares = ₹5,000

Now, let's calculate the net profit for both intraday and delivery scenarios.

Scenario 1: Intraday Trade

• Buy Turnover: 100 × 1000 = ₹100,000
• Sell Turnover: 100 × 1050 = ₹105,000
• Total Turnover: ₹205,000

Net Profit (Intraday): ₹5,000 - ₹84.56 = ₹4,915.44

Scenario 2: Delivery Trade

• Turnover is the same.

Net Profit (Delivery): ₹5,000 - ₹244.04 = ₹4,755.96

Notice how the cost structure is significantly different. While brokerage is zero for delivery, the much higher STT makes the total cost nearly three times that of the intraday trade.

The Breakeven Point: A Quant's North Star

For a quantitative trader, the most critical derivative of these costs is the breakeven point. This is the minimum price movement required per share just to cover all transaction costs.

Breakeven (per share) = Total Charges / Quantity

• Intraday Breakeven: ₹84.56 / 100 = ₹0.85 per share
• Delivery Breakeven: ₹244.04 / 100 = ₹2.44 per share

This means for your intraday trade to be profitable, the stock must move by at least ₹0.85 in your favor. Any trading strategy you design must have an expected profit per share (alpha) that is consistently greater than this breakeven cost. If not, the strategy has a negative statistical edge and is doomed to fail.

Conclusion

In this lesson, we have meticulously unpacked the various costs associated with executing an equity trade in India. You can now see that a trade's profitability is determined not just by the entry and exit prices, but by a fixed and variable cost structure that must be overcome.

Here are your key takeaways:

• Costs are multi-faceted: Trading costs are a combination of brokerage, government taxes (STT, GST, Stamp Duty), and fees from the exchange and regulator.
• Intraday vs. Delivery: The cost structure differs significantly between these two trading styles, primarily due to different rates for STT, Stamp Duty, and the applicability of DP charges.
• GST is a tax on services: It applies to brokerage and other fees, not the value of the shares traded.
• Net Profit is what matters: Gross profit is a vanity metric; net profit, after all costs are deducted, is the only number that counts.
• Breakeven is the hurdle: Every trade must clear a breakeven price point, dictated by transaction costs, before it can become profitable. This is a non-negotiable input for any trading algorithm.

Having established the costs of executing a trade, a natural next question arises: how much capital is required to initiate the trade in the first place? In our next lesson, we will explore the role of margin in equity trading, which addresses precisely this question.