Hedged vs Naked Option Selling: Margin, Risk Caps & SEBI Rules

Hedged vs Naked selling — the basic distinction

• Hedged option selling means the seller has an offsetting position that limits downside. Common forms are:
  • Covered call: you own the underlying stock and sell a call against it.
  • Vertical spread (credit spread): you sell one option and buy another at a worse strike/expiry to cap maximum loss.
  • Hedged positions have defined worst-case losses, so exchanges charge lower incremental margins for the offsetting leg.
• Naked (unhedged) option selling is when you sell an option without owning offsetting assets. For a short call, downside is theoretically unlimited; for a short put, losses can be large if the underlying collapses. Because risk is open-ended, exchanges and brokers demand higher upfront margins and additional buffers.

How Margins are Calculated in India

Exchanges and clearing corporations use multiple components to set upfront margin for derivatives:

• SPAN margin: The core risk margin computed via a scenario-based worst-case loss model. It estimates the maximum potential loss for a single day’s move.
• Exposure margin (extreme loss buffer): An additional percentage added to account for tail risk beyond SPAN scenarios.
• Extreme Loss Margin (ELM) / expiry buffers: SEBI introduced/mandated additional buffers (for example, an ELM applied to short positions on expiry day) to cover extreme tail events.
• Broker house margin / haircut: Brokers commonly apply higher “house” margins or minimums above exchange requirements. The combined requirement can be substantial for naked shorts and is recalculated intraday as positions and volatility change.

Recent SEBI & exchange-level changes traders must know

• Higher upfront margins and expiry-day ELM: SEBI and exchanges tightened margins and added an expiry-day extreme-loss margin (ELM) to reduce speculative tail risk on short positions. This raises the cost of naked selling, especially around expiries.
• Contract design and minimum notional proposals: SEBI has proposed increasing minimum contract values and limiting multiple weekly expiries to discourage very small-ticket speculative positions in index options. These proposals (and phased implementations) reduce the accessibility of cheap naked selling for small retail accounts.
• Faster margin collection timelines: With T+1 settlement norms and stronger collection rules, brokers must collect certain margins earlier — meaning capital must be available promptly and cannot be leveraged loosely.

Because margins and rules change frequently, always check the current exchange circulars and your broker’s margin table before opening a short option.

Practical margin differences — example (conceptual)

• Selling a naked Nifty call might today require a SPAN + exposure margin that runs into lakhs of rupees per lot (varies with index level and IV). 
• Selling a vertical credit spread (sell call at strike X, buy higher strike Y) lowers the net worst-case loss to the difference between strikes minus net premium, so the margin requirement is materially lower — often just the SPAN on the net position plus a small exposure buffer.

Plan your trades with greater precision. Use 5paisa’s SPAN Margin Calculator to calculate margin requirements for your specific strikes and expiries, factoring in changing volatility and open interest.

Risk caps, position-sizing and broker policies

• Position limits and risk caps: Exchanges and brokers may enforce position limits per client and per stock/index to limit concentration risk. SEBI’s broader measures (contract notional floors, restricting multiple weekly contracts) are intended to cap systemic retail exposure.
• House risk controls: Many brokers automatically block new naked shorts if you lack the required upfront margin or if the strategy breaches their internal risk thresholds. You positions can also be auto-squared off close to expiry to avoid assignment and ELM costs — this can result in forced exits at poor prices.

Why hedged selling is usually smarter for retail traders

• Defined risk: Spreads and covered calls define maximum loss; you can plan worst-case scenarios and size positions accordingly.
• Lower capital lock-up: Because a purchased option or owning the underlying caps risk, exchanges demand lower margin — freeing capital for other trades.
• Less chance of forced liquidation: Brokers are less likely to square off hedged positions, since those don’t suddenly create unlimited obligations.
• Easier to explain & monitor: Hedged strategies produce predictable P&L profiles and are simpler to reconcile with tax and accounting.

When (if ever) might naked selling be acceptable?

Naked selling can be profitable if:

• You have large capital, rigorous risk controls, and access to professional margin management.
• You intend to sell very far out-of-the-money options with a measured, small probability of loss, and you fully understand the tail risk. 

Note: For most retail traders, the combination of increased SEBI margins, ELMs, and potential for sudden assignment makes naked selling a high-risk activity best avoided or limited to a small, capital-protected part of the portfolio.

Taxation Rules for Option Trading in India

In India, your income from options trading is considered Non-Speculative Business Income under Section 28 of the Income Tax Act.

Under the Union Budget and effective regulatory updates from April 1 2026, the Securities Transaction Tax (STT) rate for options premium sales in India was officially hiked from 0.10% to 0.15%.

Securities Transaction Tax (STT) Rates:

• Option Premium Sale: 0.15% on the option premium value payable by the seller. 
• Exercised Options: 0.15% of the intrinsic value (on options bought and exercised). 
• Futures Sale: 0.05% on the sell side. 

Note: The profit from options trading is added to your total income and is taxable as per your applicable income tax slab rates.

Practical checklist before you sell any option (retail trader)

• Run the margin calculator for your exact strikes & expiry (SPAN + exposure + ELM). Use broker or exchange tools.
• Decide hedged or naked — prefer credit spreads or covered calls unless you clearly accept unlimited/tail risk.
• Check broker house rules for auto-square, minimum margins and position limits.
• Estimate worst-case loss in rupees and size the trade so that loss is affordable.
• Factor in ELM & expiry buffers — short positions can become significantly costlier near expiry.
• Monitor IV & event calendar — avoid opening large naked shorts before earnings, policy decisions or other volatility catalysts.
• Understand tax consequences and keep records for P&L and taxes.

Final Thoughts

SEBI’s recent tightening, exchange-level ELMs, and proposals to raise contract notional have increased the capital needed and the regulatory scrutiny on option selling — especially naked shorts.

Understanding the differences between hedged vs naked selling is important for options traders. Hedged selling (covered calls, credit spreads) offers defined risk, lower margin requirements and fewer surprises, making it the prudent path for most retail traders.

Naked selling remains a high-margin, high-tail-risk strategy that should only be attempted by well-capitalised, experienced traders who can absorb large adverse moves and meet rapid margin calls.
Before you sell any option, do the math with a margin calculator, factor in expiry buffers and broker house rules, and size the trade to a loss you can live with.

Are you ready to dive into the world of options trading? Open a free trading account with 5paisa and start trading today!