STT, Stamp Duty & Trading Taxes in India: The Complete Cost Guide for Equity Investors

Buying a stock isn't just about the price tag. You pay the broker, you pay the exchange, and then you pay the government. For many new investors in India, the invoice looks like a puzzle of acronyms. STT, GST, Stamp Duty, SEBI fees-it’s easy to feel like you’re losing money before you even make your first trade.

The reality is simpler than it looks. These charges are fixed, transparent, and mostly low. But knowing exactly what you pay-and when-changes how you plan your exits. A quick calculation can save you thousands in taxes if you structure your trades correctly.

This guide breaks down every fee an equity investor pays in India as of 2026. We’ll look at the Securities Transaction Tax (STT), the often-overlooked Stamp Duty, and the capital gains tax that hits your profits. By the end, you’ll know exactly where your money goes.

What Is Securities Transaction Tax (STT)?

Securities Transaction Tax (STT) is a direct tax levied by the Indian government on the purchase or sale of securities listed on recognized stock exchanges. Introduced in 2004, its primary goal was to reduce fraud and increase transparency in the market by making transactions traceable through tax payments.

For the average equity investor, STT is the most visible cost. It applies specifically to equity shares, equity-oriented mutual funds, and units of investment schemes. If you are trading in commodities, currencies, or bonds, STT does not apply.

The rate depends entirely on whether you are buying or selling, and which segment you are trading in:

• Cash Market Delivery (Buy & Hold): You pay STT only when you sell the shares. The rate is 0.1% of the transaction value.
• Intraday Trading (Squaring off same day): You pay STT on both the buy and sell legs. The rate is lower, at 0.025% per side.
• Equity Derivatives (F&O): Futures and Options have their own rules. On Futures, you pay 0.0125% on the sell side only. On Options, you pay 0.0625% on the write (sell) side and 0.0125% on the exercise side.

A common mistake beginners make is assuming they pay STT when they buy stocks for long-term holding. They don’t. The tax triggers only upon exit. This makes STT a deferred cost until you decide to cash out.

Understanding Stamp Duty on Share Transactions

If STT is the tax on the transaction, Stamp Duty is the tax on the contract. Historically, this was paid to state governments via physical stamps. Today, it is collected electronically as part of the settlement process.

Stamp duty rates were revised significantly in recent years to harmonize them across states. As of 2026, the rates for equity investments are standardized under the Central Government's authority:

Notice that unlike STT, you pay Stamp Duty on both the buy and the sell side in the cash market. While 0.015% sounds tiny, it adds up over high-frequency trading. For a ₹10 lakh portfolio turnover, that’s ₹1,500 just in stamp duty on one leg. It is a non-negotiable cost deducted directly from your demat account during settlement.

Capital Gains Tax: The Real Cost of Profit

STT and Stamp Duty are transaction costs. Capital Gains Tax (CGT) is the profit tax. This is where your strategy matters most. The Indian tax regime distinguishes between Short-Term Capital Gains (STCG) and Long-Term Capital Gains (LTCG).

Short-Term Capital Gains (STCG):

If you hold equity shares for less than 12 months, any profit is considered short-term. Since the budget changes in recent years, STCG on equities is taxed at a flat rate of 20% plus applicable surcharge and cess. There is no indexation benefit here. If you buy a stock for ₹100 and sell it for ₹120 after six months, you pay 20% tax on the ₹20 profit.

Long-Term Capital Gains (LTCG):

If you hold the shares for more than 12 months, the treatment is more favorable but comes with a threshold. Profits up to ₹1.25 lakh per financial year are exempt. Any LTCG exceeding ₹1.25 lakh is taxed at 12.5% without indexation. Indexation-the benefit of adjusting your purchase price for inflation-is no longer available for equity assets acquired after January 2018.

Why does this distinction matter? Because the gap between 20% (STCG) and 12.5% (LTCG) is massive. Holding a stock for just one extra month can slash your tax bill by nearly half. For active traders who square off positions daily, STCG is inevitable. For investors building wealth, patience is literally profitable.

Other Mandatory Fees: Exchange, SEBI, and GST

Beyond the big three, there are smaller regulatory fees that appear on your statement. These are usually negligible for small accounts but worth understanding.

• Exchange Transaction Charges: Paid to NSE or BSE. Roughly 0.003% to 0.005% depending on the segment. This is the fee for using the exchange infrastructure.
• SEBI Transaction Charges: Paid to the Securities and Exchange Board of India. Approximately 0.0001% of the transaction value. This funds market regulation.
• GST (Goods and Services Tax): At 18%, GST applies to all service charges. This includes your brokerage fees, exchange transaction charges, SEBI charges, and stamp duty. You do not pay GST on the principal amount of the trade, only on the fees associated with it.

Most brokers bundle these into a "regulatory charges" line item. While individually small, collectively they represent the overhead of participating in a regulated market.

How Brokerage Fits Into the Picture

Your broker’s commission is separate from government taxes. In the current era of discount broking, many platforms offer zero brokerage for delivery trades. However, intraday and F&O trades often incur a flat fee per order (e.g., ₹20 per executed order) or a percentage-based charge.

Always check if your broker charges GST on top of their brokerage. If you pay ₹20 in brokerage, you actually pay ₹23.60 (₹20 + 18% GST). Over hundreds of trades, this difference compounds. Full-service brokers may charge higher percentages (0.5% to 1%), which can eat into margins significantly for high-volume traders.

Tax Planning Strategies for Equity Investors

You cannot avoid STT or Stamp Duty. But you can optimize your Capital Gains Tax liability. Here are three practical strategies:

1. The 12-Month Rule: Unless you are a professional trader, default to a long-term mindset. Holding assets for over a year shifts your tax bracket from 20% to 12.5%. This is the single biggest lever for tax efficiency.
2. Harness the Exemption Limit: If you expect modest gains, try to keep your annual LTCG below ₹1.25 lakh. You can do this by staggering sales throughout the year rather than liquidating large positions at once.
3. Harvest Losses: If you have a losing position, consider selling it to realize a loss. This loss can be set off against your capital gains for the year, reducing your taxable income. You can also carry forward unadjusted losses for up to eight years.

Remember, tax planning is not about evasion; it’s about timing. The government expects you to pay taxes on profits. Smart investors simply ensure they pay the minimum required by law by aligning their holding periods with tax brackets.

Common Mistakes to Avoid

Many investors overlook the impact of transaction costs on their net returns. A stock might rise 5%, but after brokerage, STT, Stamp Duty, GST, and Exchange charges, your net gain might be closer to 4.5%. For high-frequency strategies, these frictions can turn a profitable model into a losing one.

Another frequent error is ignoring the tax implications of dividend income. Dividends are now taxed at your slab rate. If you are in the 30% tax bracket, receiving dividends is effectively more expensive than realizing capital gains taxed at 12.5%. Adjust your expectations accordingly.

Finally, keep meticulous records. Your broker provides a contract note, but you need to maintain a consolidated view of your cost basis, especially if you use multiple brokers. Accurate record-keeping ensures you claim the correct LTCG benefits and avoid penalties during scrutiny.