Your broker tells you what you made. It does not tell you what you kept. Seven separate charges come off every options round trip, win or lose, and no P&L screen shows them. Upload the tradebook your broker already gives you and see the figure that actually reached your account.
72 round trips over twenty days on the sample book below, costed by the same engine the journal runs on your own file. A sample, not anyone’s real account.
Export from your broker, import, and see what the charges took.
The illustration shows trade data being imported from a TradeSmart account dashboard. Figures in the film are a sample, not a real account.
Net after every charge, for whatever window you pick, with gross shown underneath it so the gap is never hidden. Every number on the page clicks through to the trades behind it.
Two of these rates changed during 2026 alone, which is why the journal keeps dated sets and costs each trade with whichever was in force on the day it happened.
| Charge | What it is | Current rate on NSE options |
|---|---|---|
| Brokerage | What your broker charges to place the order | Set by your broker. TradeSmart is a flat ₹15 an order, Zerodha ₹20 |
| STT | Securities Transaction Tax, on the sell side only | 0.15% of premium, rounded to the rupee, from 1 April 2026 |
| Exchange transaction | NSE’s own fee on premium turnover | 0.03553%, which folded in the separate IPFT charge on 1 March 2026 |
| Clearing | Charged by the clearing corporation and passed through | Varies by broker, around 0.0215% of premium |
| GST | 18% on brokerage plus the exchange and clearing fees | 18% |
| Stamp duty | State duty, on the buy side only | 0.003% of premium |
| SEBI turnover fee | The regulator’s levy on turnover | ₹10 per crore |
On one lot of NIFTY in and out around ₹100, those seven come to ₹62.26 a round trip. Two round trips a day across roughly 250 trading days is ₹31,130 before a single rupee of profit, and none of it appears on a P&L screen.
About two minutes, and nothing is typed in by hand.
TradeSmart and Zerodha have their brokerage plans built in, so their rates are correct out of the box. Any other broker works too: upload the CSV and enter your own brokerage and clearing rates once in settings. The file needs a date, a trading symbol, a buy or sell side, a quantity and a price, and most broker exports have all five.
Yes. There is no paid tier, no trial period and no card required. A free account stores up to 25,000 fills, which covers far more trading than most retail traders do in a year.
Nothing bad. Every fill carries a fingerprint built from its date, time, symbol, side, quantity and price, so rows already in your journal are recognised and skipped. Uploading a longer export that overlaps an earlier one imports only the new rows, and your notes and tags survive the rebuild.
Yes. Legs placed on the same underlying within a three minute window are grouped into one position and classified: straddle, strangle, vertical spread, butterfly, iron condor or calendar. The position counts once in your win rate rather than once per leg. Where the shape is ambiguous the journal says so instead of guessing.
The engine was validated against real TradeSmart contract notes and reconciles to the paisa on both an NSE and a BSE note. Rates are stored in dated sets, so trades before 1 March 2026 use the old NSE transaction and IPFT split and trades from 1 April 2026 use the higher Budget 2026 STT rate. Equity cash trades are an exception and are not costed, because a tradebook does not say whether a trade was intraday or delivery.
No. There is no broker login, no password and no API key at any point. You upload the tradebook CSV your broker already gives you, and you can delete a single import or everything at once from inside the tool.
Free. No broker login, no password, no API key.