A covered call is an options strategy that lets you collect a premium on shares you own while accepting a limit on your upside. Sell one when you are neutral to moderately bullish, would accept selling at the strike price, and believe the strike price plus the premium is an acceptable exit price.
One standard equity option contract generally represents 100 shares. A covered call is usually a poor choice when you expect a sharp rally or would strongly regret losing the shares. The premium provides income, but it does not remove the stock's downside risk.
Covered Calls at a Glance
| Situation | Should you sell a covered call? | Reason |
|---|---|---|
| You expect the stock to stay flat or rise modestly | Yes | You can earn a premium while retaining some upside |
| You have a target price at which you would sell | Yes | The strike can serve as a planned exit |
| You expect a strong rally | Usually no | Gains above the strike are capped |
| You are bearish on the stock | Usually no | The premium offers only a limited downside cushion |
| You want to protect a dividend | Use caution | An in-the-money call may be assigned before the ex-dividend date |
| You are holding a large unrealized gain | Review tax consequences first | Assignment can trigger a taxable stock sale |
When Is the Best Time to Sell a Covered Call?
The best time to sell a covered call is when the stock's expected upside is modest and the premium compensates you for giving up additional gains.
Before selling, confirm that:
- You would be comfortable selling the shares at the strike price.
- The strike price plus the premium is an acceptable total sale price.
- You do not expect a major upward move before expiration.
The Options Industry Council describes covered calls as suitable for a steady or slightly rising stock price, rather than for an investor who is strongly bullish or strongly bearish.
Sell Covered Calls When You Have a Specific Exit Price
A covered call works well when you already have a price at which you would willingly sell the stock.
Suppose you own 100 shares trading at $50 and sell a $55 call for a $1.50 premium.
- Stock below $55: The call may expire worthless. You keep the shares and the $150 premium.
- Stock above $55: The shares may be assigned. You sell at $55 and keep the premium, producing an effective sale price of $56.50 per share.
- Stock falls to $40: You still lose money on the shares. The premium reduces the loss by $1.50 per share but does not remove the downside risk.
If you bought the shares at $50, the premium lowers the position's effective break-even price to $48.50. The stock can still lose most or all of its value.
Should You Sell Covered Calls After a Stock Rally?
Selling after a rally can make sense if you are still willing to sell the shares at the selected strike price.
A rally may increase the value of call options, especially when implied volatility also rises. The higher premium does not automatically make the trade attractive. After a rally:
- The call may be closer to being in the money.
- The chance of assignment may be higher.
- Less upside remains before the stock reaches the strike.
- Buying the call back may cost more if the stock continues rising.
Implied volatility affects option premiums. When implied volatility rises, a short call may become more expensive to close.
Ask yourself:
Would I still be happy selling the shares at the strike price if the stock rises quickly?
How Should You Choose the Strike Price?
Choose the strike price based on the price at which you are willing to sell, rather than simply choosing the contract with the highest premium.
Out-of-the-Money Calls
An out-of-the-money call has a strike price above the current stock price.
This may suit you if you want to:
- Keep the shares if the stock rises modestly.
- Earn income without setting a sale price below the current market.
- Preserve more upside potential.
The trade-off is that a higher strike usually produces less premium and provides a smaller downside cushion.
At-the-Money Calls
An at-the-money call has a strike price close to the current stock price.
It may produce more premium than a higher-strike call, but a small upward move can put the option in the money. The option may also respond sharply to stock-price changes as expiration approaches.
In-the-Money Calls
An in-the-money call has a strike price below the current stock price.
Use one only if you are comfortable selling the shares at the strike price plus the premium. An in-the-money call can suit an investor who wants to exit an appreciated position, but it leaves little room for further gains.
How Does Time to Expiration Affect a Covered Call?
Time decay generally benefits the seller of a covered call because an option's time value tends to decline as expiration approaches. An out-of-the-money call may expire worthless, allowing you to keep the full premium.
Shorter-dated calls can offer faster time decay, but they also require more attention:
- You may need to manage the position more often.
- The option can react sharply to a small stock move near the strike.
- Assignment risk can rise when the call is deep in the money and expiration approaches.
A longer-dated call may provide more premium, but it also limits the stock's upside for a longer period. Choose an expiration based on how long you are willing to accept that limitation. There is no universally best expiration period.
Should You Sell a Covered Call Before Earnings or Other Major Events?
Use caution before selling a covered call ahead of a major company event. The premium may be higher because option prices reflect greater expected volatility, but the stock can also move sharply through the strike.
Check for an upcoming:
- Earnings announcement
- Merger or acquisition decision
- Regulatory decision
- Major product launch
- Litigation ruling
- Corporate restructuring
A larger premium is payment for accepting the possibility of a large stock move while your upside remains capped.
What Happens to Assignment Risk Before the Ex-Dividend Date?
Assignment risk is higher before a stock's ex-dividend date when the call is in the money, the dividend is relatively large, and little time value remains in the option.
A call holder may exercise early to receive the dividend. U.S. equity options are American-style, so the holder can exercise before expiration.
If you want to keep the shares and collect the dividend, review the call's intrinsic value, remaining time value, and the dividend amount before the ex-dividend date. If early assignment would be a problem, consider closing or adjusting the call.
When Should You Buy Back or Roll a Covered Call?
Consider buying back the call when:
- Most of the premium has decayed.
- You want to remove assignment risk.
- The stock has become more bullish than expected.
- You want to sell the shares before expiration.
- An ex-dividend date or corporate event is approaching.
You can roll the position by buying back the existing contract and selling another call with a different strike or expiration. Rolling does not remove risk. It creates a new trade with a new strike, expiration date, and premium.
A short call remains exposed to assignment while it is open. Closing the position during market hours removes the possibility of assignment on that closed position, although you should confirm its status with your broker.
What Are the Tax Considerations?
For U.S. taxpayers, the IRS generally does not treat the premium from a written call as immediately taxable income when the premium is received. Tax treatment generally occurs when the option expires, is closed, or the stock is sold following assignment. If the call is exercised, the premium increases the amount realized from the stock sale.
The IRS also has specific rules for qualified covered calls, including restrictions involving expiration length and deep-in-the-money strikes. These rules can affect holding periods, capital losses, and straddle treatment.
If you have a large unrealized gain, review the possible tax consequences with a qualified tax professional before selling the call.
A Practical Covered-Call Checklist
Sell the covered call only if you can answer yes to each relevant question:
- Would I be satisfied selling the shares at the strike price?
- Does the strike price plus the premium meet my target sale price?
- Am I neutral or only moderately bullish on the stock?
- Have I checked the earnings calendar and corporate actions?
- Have I checked the ex-dividend date?
- Is the option liquid enough to trade at a reasonable bid-ask spread?
- Can I accept the stock's downside risk?
- Have I considered the tax effect of assignment?
- Do I own enough shares to cover the contract?
If the call is assigned, you must deliver the shares at the strike price.
Bottom Line
A covered call fits a stock you would sell at the selected strike and a market you expect to be flat or modestly higher. The premium is payment for accepting assignment risk and giving up gains above the strike.
It is not a substitute for a stop-loss order or a complete hedge against a falling stock.