Two traders can have the exact same P&L and file completely different — and wrong — returns, because F&O tax has three things people routinely get wrong: what your turnover is, whether you need an audit, and what to do with a loss. Get those right and filing is simple. Get them wrong and you either overpay, trigger an audit you didn't need, or throw away a loss you could have carried forward for years.
This is a plain guide to the mechanics for FY 2025-26 (assessment year 2026-27). It is not tax advice — the rules have edge cases and your situation is yours. Read it, then confirm with your CA.
1. How F&O income is classified
The head your trades fall under decides the form, the rate, and what you can deduct.
| What you traded | Tax head | Form | |---|---|---| | F&O (index/stock futures & options) | Non-speculative business income | ITR-3 | | Intraday equity (buy & sell same day, no delivery) | Speculative business income | ITR-3 | | Delivery equity (held overnight+) | Capital gains (STCG / LTCG) | ITR-2 / ITR-3 |
So F&O is business income, taxed at your slab rate — not a flat 15% or 20%. There's no special low rate for F&O profits, and no STT rebate; it's ordinary business income. That also means F&O losses behave like business losses, which — as you'll see — is a good thing.
2. Turnover — the number everyone gets wrong
Turnover in F&O is not the value of your contracts. If you buy one lot of Nifty worth ₹15 lakh, your turnover is not ₹15 lakh.
For F&O, turnover = the absolute sum of your profits and losses, trade by trade. Absolute means you add losses as positive numbers.
Trade 1: +₹10,000 Trade 2: −₹7,000 Turnover = 10,000 + 7,000 = ₹17,000 (not ₹3,000)
A note on option premium: an older method added the premium received on option sales to turnover. The ICAI Guidance Note (8th edition, August 2022) dropped that — the current position is turnover = absolute profit/loss only, without adding sell premium. Some CAs still take the conservative older view, so this is worth a one-line confirmation with yours.
Why turnover matters at all: it's the number that decides whether you need a tax audit — nothing else. It does not change how much tax you pay.
3. Tax audit — you probably don't need one
This is where most retail traders panic unnecessarily. Because you trade through an online broker, effectively 100% of your transactions are digital. When 95%+ of your receipts and payments are digital, the tax-audit threshold under Section 44AB is ₹10 crore of turnover — not the old ₹1 crore.
So unless your absolute-P&L turnover crosses ₹10 crore, a routine retail F&O trader generally does not need an audit.
The one trap: Section 44AD (presumptive taxation). If you ever opted into 44AD and then declare profits below 6% of turnover (or a loss), the interaction can pull you into audit territory even below ₹10 crore. If you've never used 44AD, this usually doesn't apply — but it's the single most common reason a small trader unexpectedly needs an audit, so flag it to your CA.
4. A loss is an asset — if you file on time
Here's the part that turns a bad year into money later. An F&O loss is a non-speculative business loss, and it's one of the most flexible losses in the tax code:
- Same year: it can be set off against almost any other income — capital gains, rental income, interest, other business income — except salary.
- Carry forward: whatever you can't set off, you carry forward up to 8 assessment years (Section 72), to offset future business/F&O profits.
But there's a hard condition: you must file ITR-3 by the due date. For non-audit cases that's 31 July 2026 (verify the exact date each year — CBDT sometimes extends it). File even one day late and you forfeit the carry-forward — the loss is gone, even though you were never required to be audited.
So even in a losing year with no tax to pay, filing on time is not optional if you want that loss to work for you later. A ₹2,00,000 loss carried forward can shelter ₹2,00,000 of future profit from tax — that's real money you're leaving on the table by skipping the return.
5. What you can deduct
Because F&O is a business, your costs are deductible against the income — and this includes STT. (This is a key difference from capital gains, where STT is not deductible.) Deductible items include:
- Brokerage, exchange transaction charges, SEBI fees, GST on charges, stamp duty
- STT (allowed for business income)
- Genuinely business-related costs — internet, a share of subscriptions/tools, advisory fees
Keep the charge breakdown from your broker; it's what substantiates these deductions. Note too that STT on options was hiked (the option-sale STT rate went up in late 2024), so your charge line is larger than it used to be — all the more reason to claim it in full.
6. Don't forget advance tax
If your total tax liability for the year is likely to exceed ₹10,000, you're expected to pay advance tax in instalments through the year, not in one lump at filing. Miss it and interest under Sections 234B/234C applies. Profitable traders: keep this on your radar from the first quarter.
7. What you actually need to file — and how to get it
Strip away the jargon and filing F&O taxes needs a small set of accurate numbers:
- Realised P&L, split by segment (F&O vs intraday vs delivery — they go to different heads)
- Turnover (absolute P&L, computed the right way)
- The full charge breakdown (brokerage, STT, exchange, SEBI, GST, stamp duty)
- A per-trade ledger to back all of it up if questioned
Your broker's P&L statement gets you part way, but stitching multiple brokers together, splitting segments correctly, and computing turnover the ICAI way is exactly where errors creep in.
This is what TradeDNA's Tax P&L report does from your imported tradebook: it classifies every closed trade into the right head, computes turnover per segment, itemises charges, and gives you a per-trade ledger you can export to CSV — across all your brokers, for each financial year. It's a working document to hand your CA, not a filed return, and the turnover method is adjustable so your CA can apply their own view. You still file; it just removes the arithmetic and the guesswork. (If you're new here, that report is part of every plan — see what's included.)
Getting the tax data right is the boring twin of the behavioural work — the same tradebook that shows why you lose is the one you file from. Both come down to reading your own trades honestly.
FAQ
Is F&O income taxed at a special rate? No. F&O is non-speculative business income, taxed at your normal slab rate — there's no flat or concessional rate, and no STT rebate.
How is F&O turnover calculated? It's the absolute sum of your trade-wise profits and losses (losses counted as positive), not the contract value. Per the ICAI 8th-edition guidance, option sell premium is no longer added — confirm with your CA.
Do I need a tax audit for F&O trading? Generally only if your turnover crosses ₹10 crore, because your transactions are effectively 100% digital. The main exception is a Section 44AD interaction if you declare very low profit or a loss — check with your CA.
Can I carry forward an F&O loss? Yes — a non-speculative business loss carries forward up to 8 assessment years and can offset future business/F&O profit, but only if you file ITR-3 by the due date. File late and you lose the carry-forward.
Is STT deductible on F&O? Yes — for F&O (business income), STT and all other charges are deductible. STT is not deductible for delivery equity capital gains.
This article is general information for FY 2025-26 (AY 2026-27), not tax advice. Rules, thresholds, and due dates change — verify with a qualified CA before filing. Sources: ICAI Guidance Note on Tax Audit (8th edition); Sections 44AB, 44AD, 72 of the Income-tax Act.