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Security Transaction Tax: Comprehensive Guide

Curious about how this tax impacts your stock trades? Discover how different rates are and what they mean for your investments.

Security Transaction Tax
  • Summary
  • Securities Transaction Tax (STT) is a direct tax on specified securities transactions in India, with rates varying by security and transaction type.
  • Equity delivery trades attract 0.1% STT on both purchase and sale values, while equity intraday sales attract 0.025% on the sell side.
  • From 1 April 2026, STT is 0.05% on futures sales and 0.15% on options sales and exercised options.
  • STT forms part of trading costs and is separate from brokerage, GST, stamp duty and any capital gains or business-income tax.

What is the Securities Transaction Tax

Securities Transaction Tax (STT) is a tax charged by the Indian government on the purchase or sale of certain securities traded on recognised stock exchanges. It is collected automatically by the broker or exchange when the transaction takes place and is deposited with the government. 

STT generally applies to transactions involving equity shares, equity-oriented mutual funds, ETFs and derivatives, subject to the applicable rules and rates. The rate depends on the type of security and transaction, such as buying or selling equity shares or trading in futures and options. 

How Security Transaction Tax Works

Securities Transaction Tax (STT) is a tax charged when you buy or sell certain securities on a recognised stock exchange. The amount of tax depends on the value and type of the transaction. 

The process can be described in three simple steps.

1. Transaction: An investor buys or sells eligible securities on a recognised exchange. 

2. Calculation: The applicable STT rate is applied to the transaction value, based on the type of transaction. 

3. Collection: The broker directly collects the tax and transfers it to the government. 

It is important to understand that STT is separate from brokerage, GST, stamp duty and capital gains tax. The applicable STT rate can also differ between equity delivery, intraday trades and derivatives. 

How Security Transaction Tax is Calculated

The STT is calculated by multiplying the applicable STT rate by the value of the securities that have been bought or sold. It is based on the type of security and whether the transaction involves buying or selling.

STT = Total Transaction Value × Applicable STT Rate

For example, an investor purchases a few units of shares at ₹50,000, and the applicable STT rate is given as 0.2%. Then the STT value will be ₹50,000 × 0.2%, i.e., ₹100, and this is collected by the broker directly.

Applicability: When STT is Charged

STT is charged on certain transactions in the securities market. The applicable rate depends on the type of transaction. The following includes the market segments when STT is charged.

1. Equity Delivery Trades: STT is charged when you buy or sell shares and take delivery of the shares. The tax is calculated on the transaction value. The rate is 0.1% on the purchase value, payable by the buyer, and 0.1% on the sale value, payable by the seller. 

2. Equity Intraday Trades: STT is charged when you buy and sell shares on the same trading day without taking delivery. It is generally charged on the selling side. The rate is 0.025% on the sale value, payable by the seller, and no STT is charged on the buy side. 

3. Futures and Options: STT is also applicable to eligible futures and options transactions. The rate and calculation method differ between futures and options. On the sale of futures, STT is 0.05% of the traded price, payable by the seller, up from 0.02% until 31 March 2026. On the sale of options, STT is 0.15% of the option premium, payable by the seller, up from 0.10%. Where an option is exercised, STT is 0.15% of the intrinsic value, payable by the purchaser, up from 0.125%. No STT is charged on the buy side of futures or options. 

4. Equity Mutual Funds: STT can be charged when units of equity-oriented mutual funds are sold or redeemed through a recognised stock exchange. It is generally not charged when such units are purchased. The rate is 0.001% of the sale value, payable by the seller, and there is no STT on purchase. 

Impact of STT on Traders and Investors

STT is an extra charge that traders and investors pay their brokers when processing certain market transactions. Although the tax rate may be low, its impact can become noticeable when the transactions are large or frequent.

1. Cost of Trading: STT is added to the cost of eligible transactions. Traders need to consider it along with brokerage, GST, stamp duty and other charges when calculating their total trading cost. 

2. Overall Returns: STT can slightly reduce the profit earned from a trade because it is an additional transaction cost. This is particularly relevant for short-term trades where the profit margin may be small. 

3. Frequent Traders: Investors who trade regularly may pay STT multiple times. As the number and value of trades increase, the total STT paid can also increase. 

Strategies to Manage and Optimise STT Impact

STT is a mandatory tax on specific securities transactions. Investors cannot escape the fee by changing brokers. However, they can control its impact by keeping transaction costs in mind while planning their trades.

1. Understand the Cost Reality: Know how much STT you will pay before making a trade. Also consider brokerage, GST, stamp duty and other charges to understand the total cost. 

2. Reduce Trade Frequency: Avoid buying and selling too often without a clear reason. Fewer trades can help reduce the total amount spent on STT and other transaction costs. 

3. Optimise Execution and Brokerage: Compare brokerage plans and choose a cost-effective option. Placing trades carefully can also help reduce unnecessary transaction costs. 

4. Pivot Portfolio Structures: Choose an investment approach that matches your goals and reduces unnecessary buying and selling. For example, a long-term investment approach may involve fewer transactions than frequent trading. 

Conclusion

Securities Transaction Tax (STT) is an important cost for investors and traders in India. It is charged on certain securities transactions and is usually collected automatically when a trade takes place. Understanding when STT applies and how it is calculated can help investors estimate their actual trading costs. Investors should also consider STT along with brokerage, GST, stamp duty and other charges before making a transaction. 

FAQs

What is STT in simple terms?

STT is a tax charged when you buy or sell certain securities through a recognised stock exchange. The broker or exchange usually collects it automatically.

Who pays STT: buyer or seller?

It depends on the type of transaction. In some transactions, the buyer pays STT, while in others, the seller pays it. The applicable rules and rates vary by security and transaction type.

Is STT refundable?

No. STT paid on a completed eligible transaction is generally not refundable. However, specific rules may apply in certain cases.

How is STT calculated in intraday trading?

For eligible equity intraday trades, STT is generally charged on the selling value of the shares. The applicable STT rate is multiplied by the transaction value to calculate the tax.

Does STT apply to mutual funds?

Yes. STT can apply to equity-oriented mutual funds when their units are sold or redeemed through a recognised stock exchange. It is generally not charged when these units are purchased.

Can STT be avoided legally?

No. If a transaction is subject to STT, it cannot normally be avoided. However, investors can reduce their STT cost by avoiding unnecessary or frequent trades.

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Shweta Desai

Shweta Desai is a personal finance enthusiast dedicated to helping readers make sense of money matters. She started her financial journey by creating simple budgeting systems for herself and gradually ventured into stock market investing. Over time, Shweta’s passion for empowering others to take charge of their finances led her to share insights on everything from saving strategies to portfolio diversification. Through relatable anecdotes and step-by-step guides, she aims to demystify the complexities of finance, inspiring confidence and clarity in her audience.

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