🧢 Covered calls: getting paid to put a ceiling on your shares

🎯 In 30 seconds: A covered call means you own one full lot of a stock and sell one call option on that stock. You collect the premium up front. In return you agree to sell your shares at the strike price if the call ends in the money at expiry. Indian stock options are European style and physically settled, so if the call finishes in the money your shares really do get delivered. Your upside is capped at the strike, your downside is almost the same as owning the shares, and the premium is a thin cushion. It is an income idea with stock risk, not a safe one.

The idea in plain words

You know from Call options that a call gives its buyer the right to buy the underlying at a fixed price, the strike, on the expiry date. Someone has to take the other side. When you sell (or "write") the call, that someone is you.

The buyer pays you a premium. You keep it whatever happens. If the share price ends above the strike on expiry day, the option is exercised automatically and you must deliver the shares at the strike. That is assignment.

The call is covered because you already hold the shares you might have to deliver. Selling a call without them is a naked call, and its risk has no ceiling. With a covered call the worst case is roughly the worst case of owning the shares.

Picture a family that owns a shop in a busy market. A neighbour pays them ₹50,000 today for the right to buy the shop at ₹1.2 crore one month from now. If prices in the market jump to ₹1.5 crore, the family still has to sell at ₹1.2 crore. If prices fall, the neighbour walks away and the family keeps both the shop and the ₹50,000. That is a covered call.

What is different in India

Most covered call guides online are written for the US, where one option covers 100 shares and stock options can be exercised early. Indian rules differ in ways that matter for this trade.

Lot sizes are revised from time to time and differ by stock. Always check the current lot in NSE's contract file or your broker's order window. The examples in this chapter use a hypothetical lot of 500 shares.

The payoff at expiry

Here is the example used through this chapter. Every number is hypothetical.

Three numbers describe every covered call. Write them down before you place the order.

• Maximum profit = (strike - share price paid + premium) x lot = (₹1,040 - ₹1,000 + ₹17) x 500 = ₹28,500. You get this at any price at or above ₹1,040.
• Breakeven = share price paid - premium = ₹1,000 - ₹17 = ₹983.
• Maximum loss = (share price paid - premium) x lot = ₹4,91,500, if the company goes to zero. The premium only knocks ₹8,500 off the ₹5 lakh you could lose.

Look at the shape. Left of the strike, the blue line runs parallel to the shares-only line, ₹17 per share higher. Right of the strike, it goes flat. That flat part is what you sold for the premium: every rupee the stock rises above ₹1,040 goes to the call buyer.

Five ways it can end

Same trade: 500 shares bought at ₹1,000, one lot of the 1,040 call sold at ₹17. Here is the result on expiry day, before charges.

The last row is where people get surprised. The stock rose 15% and you made 5.7% (₹28,500 on ₹5 lakh). Holding the shares alone would have made ₹75,000. That ₹46,500 gap is real money you agreed to give up.

The first row is the other surprise. The premium did not protect you from a ₹100 fall. It turned a ₹50,000 loss into a ₹41,500 loss.

Choosing the strike

The strike decides how much premium you collect and how much upside you keep. Here is the trade-off for the same ₹1,000 share with 28 days to go. The premiums come from a Black-Scholes model at 28% implied volatility and a 6.5% interest rate, rounded. Treat them as realistic shapes, not live quotes.

Delta (see The Greeks) is a rough, model-based guide to the chance the call finishes in the money. A 0.34 delta is often read as "about a one-in-three chance my shares get delivered". It is an estimate, not a promise.

• Closer strike: more premium and a lower breakeven, but your shares are delivered more often and you keep less upside.
• Farther strike: less premium, so less cushion, but you keep more of a rally.
• Below your cost: a strike under what you paid for the shares can lock in a loss if the call is exercised. Check this before you sell.
• Liquidity: many stock option strikes trade thinly. A wide gap between bid and ask can eat a large part of a ₹7.50 premium. See Reading an NSE option chain.

The simplest rule: only sell a strike at which you would genuinely be fine selling the shares. If you would be upset to sell Sharma Foods at ₹1,040, do not sell the 1,040 call.

Choosing the expiry

Stock options in India are monthly, and a few consecutive monthly expiries are listed at a time (check the current cycle in the contract specification). Options lose time value as expiry approaches, and the loss speeds up in the last couple of weeks (see What an option is worth). As the seller, that decay works for you. This is why many covered call writers sell the near or next month and repeat.

The far months often have few trades, so the price you see may not be a price you can actually get. Compare premium per day rather than headline premium. ₹17 for 28 days is about 61 paise per share per day. Do not turn that into a big annual "yield" in your head. You cannot repeat the same trade twelve times a year at the same price, and in some of those months the stock will fall.

Expiry and physical settlement: what actually happens

Indian stock options are European style. Nothing can happen to your shares before expiry. On expiry day, in-the-money stock options are exercised automatically and matched against sellers of the same series. There is no "I chose not to exercise" step for the buyer.

If Sharma Foods closes expiry day above ₹1,040 (based on the settlement price the clearing corporation sets), your call is in the money and is assigned. You must deliver 500 shares at ₹1,040. The money and shares then move through the clearing corporation after expiry. Exercise, assignment and expiry day in India walks through the settlement steps and the settlement price.

Three practical points follow.

• The shares must be free to deliver. If you pledged them for margin, they are not available for delivery until you unpledge them. A short call that ends in the money without deliverable shares becomes a short delivery, which can lead to an exchange auction and a penalty. Ask your broker how it handles pledged shares in expiry week.
• Margins go up in expiry week. Positions that may end in delivery attract delivery margins in the days before expiry. In January 2020, NSE Clearing set the build-up at 10%, 25%, 45% and 70% of the computed delivery margin at the end of the fourth, third, second and last day before expiry. Check the current circular and your broker's policy, because many brokers add their own rules or close such positions early.
• Your broker may act for you. Many brokers square off, or restrict new trades in, in-the-money stock option positions near expiry if the client lacks shares or money for delivery. Read your broker's physical settlement policy before you sell the first call.

Assignment is not a disaster. It is the deal you agreed to. You sold at ₹1,040 and kept the premium. The only loss is the upside you gave away.

Margin, pledging and the money side

In the US, owning 100 shares usually covers a short call completely. In India the short call is an F&O position and is margined in the F&O segment. NSE Clearing uses SPAN, a portfolio system that looks at the worst one-day loss across a set of price and volatility scenarios, and adds an extreme loss margin (exposure margin) on top. For short stock options the extreme loss margin is 3.5% of notional value on NSE's margin page, higher for deep out-of-the-money strikes (October 2026).

Your shares sit in your demat account, which is a different place. Holding them does not, by itself, reduce the F&O margin. The usual route is to pledge the shares through the depository so they count as collateral. The clearing corporation applies a haircut, so ₹5 lakh of shares may give noticeably less than ₹5 lakh of margin. Brokers also require part of your margin in cash or cash equivalents. The exact treatment differs by broker, so ask yours. Margin in India covers pledging and haircuts in detail.

Charges are part of the trade. STT on the sale of an option is 0.15% of the premium from 1 April 2026 (NSE circular, March 2026). On ₹8,500 of premium that is about ₹13. Brokerage, exchange charges, the SEBI fee, stamp duty and GST come on top. If your shares are delivered, delivery-related charges apply too. Your contract note shows every line. See What trading really costs in India.

Managing the trade before expiry

You do not have to wait for expiry. You can buy back the call at any time during market hours, which ends your obligation. Suppose Sharma Foods drops to ₹960 after two weeks and the 1,040 call is now ₹2. Buying it back costs ₹1,000 for the lot, and you keep ₹7,500 of the original ₹8,500. You are free to sell the shares or sell a new call.

If the share has run up and you want to keep it, you can roll: buy back the current call and sell the next month's call, often at a higher strike. That is two trades with two sets of charges, and a roll that pays you a small credit can still leave you further from your upside. Treat it as a new decision, not an automatic fix.

Tax, briefly

This is general information, not tax advice. Gains and losses on F&O trades are generally treated as business income, while the shares you hold are a capital asset with their own holding period. A covered call can therefore produce two kinds of income in one trade, especially when shares are delivered at expiry. Tax law and section numbers have changed recently, so older articles you find online may be out of date. Read Taxes for traders and investors in India and check with a chartered accountant before you file.

When a covered call makes sense

It can make sense if you already own a full lot of a stock, expect it to drift sideways or rise slowly, and would be happy to sell at a higher price. It makes less sense if you own the stock because you think it could double. You would be selling that double for a small premium.

It does not reduce risk much. If what you want is protection against a fall, read Hedging with protective puts, collars and Nifty puts. The mirror trade, selling puts to buy a stock, is in Selling puts in India.

Try it

You can do this on paper, without placing a trade.

1. On the NSE website, open the list of stocks with derivatives and pick one company you understand. Note its current lot size from the contract details and multiply by the share price. That is the money a covered call on it needs.
2. Open its option chain for the near month. Pick the call strike whose delta (if your broker's chain shows it) is near 0.30, or roughly 4% to 5% above the current price. Note the bid, the ask and the open interest.
3. In your trading journal, write the maximum profit, breakeven and maximum loss per lot using the formulas above, using the bid as your premium.
4. Write the date of the next results and any dividend record date.
5. On expiry day, compare the covered call result with simply holding the shares. Do this for three months before using real money.

Sources

• NSE: Equity derivatives on individual securities (European style, physical settlement, last Tuesday expiry, minimum contract value)
• NSE: Margins in equity derivatives (SPAN, extreme loss margin)
• NSE Clearing circular, 17 January 2020: Delivery margins for delivery settlement in equity derivatives
• NSE: Corporate action adjustments in equity derivatives (2% dividend threshold)
• SEBI circular, 26 May 2025: Final settlement day (expiry day) for equity derivatives contracts
• NSE circular, 31 March 2026: Changes in rates of Securities Transaction Tax