What the Backtest Lab gives you
9+ Years of Clean NSE Data
Granular 1-minute, 5-minute, 15-minute, and Daily bar data for NIFTY 50 and liquid NSE equities spanning multiple bull, bear, and consolidation cycles.
High-Speed Execution Engine
Built on optimized vector computing. Run thousands of bar iterations and multi-parameter optimizations in milliseconds.
Realistic Cost Engine
Evaluates broker commission (₹20 or 0.03%), STT on sell side (0.025%), exchange charges (0.00307%), stamp duty, and 18% GST.
Why Most Indian Traders Fail at Backtesting
Many strategy testers display attractive gross profits because they ignore the friction of Indian statutory taxes. On high-frequency intraday trading, STT, exchange turnover fees, and GST can consume over 30% to 50% of gross earnings.
Frequently Asked Questions
What you can test
- Ready-made strategies: popular setups such as EMA crossovers, opening range breakout, VWAP, Supertrend and RSI, each with its rules written out.
- Your own rules, without code: pick entry and exit conditions from a library of ready rules, or describe them in plain words, and save the result as your own strategy.
- One stock or a basket: test on a single stock or on a basket of up to 50 stocks that share one account, the way real money works.
- Exits: stop-loss, target, trailing stop, time-based exit and intraday square-off.
What every result shows
Each run lists every trade with its entry, exit, the reason it closed, the charges it paid and its profit or loss, plus the money curve, the biggest fall from a peak and the return after all costs. You can open any trade on a chart, compare two runs side by side, export the trade list to Excel, and tune a strategy's settings, with the tuned result checked on months the tuning never saw.
Charges (brokerage, STT, exchange charges, SEBI fee, stamp duty and GST), fills and slippage follow the rules on how we test. That is why our study of seven popular strategies shows each one's real result after charges: the costs are in every number.