Algo Trading Taxation in India: What Changed in 2026

Algo Trading Taxation in India: What Changed in 2026

Here's a mistake that costs Indian traders real money every year: assuming their trading profits are taxed like investment gains. For most algo traders — especially anyone trading futures and options — they aren't. F&O profits are business income, taxed at your slab rate, and that single fact changes your tax rate, your forms, and your record-keeping.

This is the part of trading nobody finds exciting and everybody gets wrong. Let's make it clear. (And the standard caveat, which matters more here than anywhere: tax depends on your specific situation, the rules change, and you should confirm with a qualified CA — this is general information, not tax advice.)

The big idea: not all trading profit is taxed the same

Indian tax law sorts your market activity into buckets, and the bucket decides the rate:

• F&O trading (futures and options) — treated as non-speculative business income, taxed at your income-tax slab rate.

• Intraday equity — treated as speculative business income, also taxed at slab rates but with its own loss rules.

• Equity delivery held short-term (≤12 months, STT paid) — short-term capital gains.

• Equity delivery held long-term (>12 months, STT paid) — long-term capital gains.

Since most algo trading in India happens in F&O, the headline for algo traders is: your profits are business income at your slab rate, not flat capital-gains rates.

The capital-gains rates (for the equity you do hold)

For the equity-delivery side, the rates that have applied since the 2024 overhaul are:

• Short-term capital gains (STCG) on listed equity (≤12 months, STT-paid): 20%. (This rose from 15% in 2024 — if you're reading an old guide quoting 15%, it's out of date.)

• Long-term capital gains (LTCG) on listed equity (>12 months): 12.5%, on gains above a ₹1.25 lakh annual exemption, with no indexation.

These are flat rates regardless of your slab — but they apply to capital gains, not to your F&O business income.

How F&O business income actually works

Because F&O is business income, a few things follow that catch people out:

• It's added to your other income (salary, etc.) and taxed at your slab rate. A trader in the 30% bracket pays 30% on F&O profits, plus applicable surcharge and cess.

• Expenses are deductible. Brokerage, exchange charges, STT paid, internet, advisory fees, and a pro-rata share of legitimate office costs can be claimed against your trading income — keep records.

• Losses have favourable rules. Non-speculative F&O losses can generally be carried forward for up to 8 years and set off against other business income — but not against your salary.

• You file ITR-3, and an audit may be required depending on your turnover and whether you're declaring profits below presumptive thresholds. If an audit applies, a CA is mandatory.

What changed in 2026

Two things worth flagging this year:

STT went up on F&O. From 1 April 2026, the Securities Transaction Tax on futures rose (to 0.05%), and STT on options also increased (to 0.15% on the sell side, on premium). STT is a per-trade cost, and for active strategies it adds up — it's also deductible as a business expense, but it still raises your effective cost per trade. Recalculate your breakeven and your edge after this change; a thin edge can vanish on the STT alone.

A new Income Tax Act took effect. The Income Tax Act, 2025 replaced the old 1961 Act from 1 April 2026. For most F&O traders the core treatment is unchanged — F&O is still non-speculative business income, losses still carry forward, ITR-3 is still the form — but it's a reason to make sure your CA is working from the current framework.

The practical takeaway

Three things to internalise:

1. If you trade F&O, you're running a business in the eyes of the tax department. Treat it like one — track expenses, keep clean records, and file ITR-3.

1. Cost matters more after the 2026 STT hike. Model your strategy's edge net of brokerage, STT, and slippage before you trust it.

1. Get a CA if there's any complexity. The set-off rules, audit thresholds, and turnover calculations have genuine traps, and a good CA saves more than they cost.

For where taxation fits in the overall cost picture of algo trading, see the complete guide to algo trading in India.