STT Calculator — Updated for Budget 2026
This free STT calculator helps Indian equity traders find their exact Securities Transaction Tax liability before placing a trade. STT is charged on every trade you place on NSE or BSE — whether you profit or not — and the rates changed significantly after Budget 2026, especially for Futures and Options traders.
Because STT is deducted automatically by your broker regardless of the trade’s outcome, understanding it in advance helps you judge whether a trade setup is still worth taking after taxes and charges.
What Is STT?
Securities Transaction Tax (STT) is a direct tax levied by the Government of India on every purchase or sale of securities on a recognised stock exchange. Unlike income tax, STT applies to the transaction itself, not to your profit — so it’s charged even on losing trades.
How to Use This STT Calculator
- Choose your segment — Delivery, Intraday, Futures, or Options
- Enter your price and quantity
- See your STT instantly, split by buy side and sell side
Current STT Rates (Effective April 1, 2026)
- Delivery: 0.1% on both buy and sell
- Intraday: 0.025% on sell side only
- Futures: 0.05% on sell side only
- Options: 0.15% on premium, sell side only
These rates were set under the Union Budget 2026–27 and replaced the previous STT structure. Using an updated STT calculator matters because outdated rates can throw off your cost estimates, especially for high-frequency intraday and F&O traders.
Why STT Matters for Your Trading Strategy
For scalpers and intraday traders who place many trades a day, STT adds up quickly across dozens of transactions. Options sellers, in particular, should pay close attention since STT on options is charged on the premium value at 0.15%, which can be a meaningful cost on high-premium contracts.
Frequently Asked Questions
What are the current STT rates?
Delivery: 0.1% on both buy and sell. Intraday: 0.025% on sell only. Futures: 0.05% on sell only. Options: 0.15% on premium, sell only — effective April 1, 2026 as per Union Budget 2026–27.
Is STT refundable if my trade is a loss?
No — STT is charged on transaction value, not on profit, and is never refunded.
Does STT apply to mutual funds too?
STT applies to equity and equity derivative transactions on recognised exchanges; this calculator is built specifically for direct equity and F&O trades.
How is STT different from brokerage?
STT is a government tax with fixed rates that apply to everyone equally, while brokerage is a fee set by your individual broker and can vary or even be zero.
A Note on Accuracy
STT rates used in this calculator follow the official structure published by NSE India, and are updated whenever the exchange or the government revises them. Since STT is only one part of your total trading cost, it’s worth checking the complete picture — brokerage, exchange charges, stamp duty, and GST together — using our Brokerage & P&L Calculator.