Is it legally permissible not to report F&O loss?

It is not legally permissible to hide or omit an F&O loss. Because F&O transactions are captured by brokerages and reported to the Income Tax Department's AIS, failing to report this data will trigger a mismatch notice. The taxpayer must declare the loss in ITR-3, allow the system to automatically set it off against their professional income, and carry forward any remaining unabsorbed loss for future years.

Not reporting F&O losses is technically not illegal in itself, but it creates significant practical risk.

Here is why:

1. F&O income is classified as non-speculative business income under Section 43(5). If you have any profits, they are taxable. If you skip reporting, the AIS and Form 26AS will still show your broker-reported turnover, and the department may raise a notice asking why income was not declared.

2. You lose the carryforward benefit. F&O losses can be carried forward for 8 assessment years and set off against future business income. But this only works if the return was filed on time with the loss disclosed. If today is your deadline (August 31 for non-audit filers), this is the last chance to claim carryforward for FY 2025-26 losses.

3. Tax audit threshold: F&O turnover (absolute sum of profits and losses on each trade, not just net) counts toward the Section 44AB threshold. If total F&O turnover exceeds Rs 1 crore (or Rs 10 crore for 95%+ digital transactions), a tax audit is mandatory regardless of whether you made a profit or loss. Not filing the audit when required is a separate penalty.

Bottom line: disclose the F&O transactions. If only losses, the disclosure protects carryforward. If profits, disclosure is mandatory.

For the full breakdown on F&O tax treatment, turnover computation, and which ITR form to use, this [F&O tax guide for India](https://taxgarden.in/blog/fno-intraday-trading-tax-itr-audit-india) covers the key rules.

Yes, F&O transactions and the resulting loss should be reported in ITR-3. F&O income is generally treated as business income, and a loss is not optional to disclose merely because setting it off against professional income produces no immediate tax saving. Report the transactions and compute the loss correctly; the return will determine the applicable set-off.

If you do not wish to claim or carry forward the loss, that does not generally justify omitting the underlying business transactions. Carry-forward of a business loss is subject to filing the return within the prescribed due date, so timely filing matters if you want to preserve that option.

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