Covered Calls: Generate Monthly Income From Stocks You Own
Covered calls are the closest thing to collecting rent on your stocks. You keep the shares, collect dividends, and earn extra income from option premiums. Here's exactly how to write covered calls.
A covered call is an options strategy where you own 100 or more shares of a stock and sell (write) 1 call option per 100 shares against your position. The buyer pays you a premium upfront. If the stock stays below the strike price by expiration, you keep the premium plus your shares. If the stock rises above the strike, your shares may be called away at the strike price. This strategy generates income on shares you already own, effectively lowering your cost basis while collecting ongoing premium. Covered calls are the most popular income-generating options strategy because the risk profile is the same as simply owning the stock, but with additional cash flow from option premiums. Start with options basics before trading covered calls →
Real-world example: Buy 100 shares of AAPL at $200. Sell 1 AAPL $210 call expiring in 30 days for $3.00 ($300 premium). Three scenarios: (a) AAPL stays at $200-$210: you keep the $300 premium, still own the shares. (b) AAPL drops to $190: you keep $300 premium, shares worth $19,000, net loss reduced from $1,000 to $700. (c) AAPL rallies to $220: shares are called away at $210, profit of $10/share on stock + $3/share premium = $13/share total, or $1,300 on $20,000 invested. The premium provides income in all scenarios, but caps your upside in a rally. Compare covered calls to other options strategies →
Choosing the Right Strike Price
Out-of-the-Money (OTM) Covered Call
The strike price is above the current stock price. OTM calls offer lower premium but leave more room for the stock to appreciate before your shares are called away. For AAPL at $200, selling the $220 call might pay $1.50 ($150 premium). You collect $150 and keep upside up to $220. Best for a moderately bullish outlook where you expect the stock to rise but want income if it stays flat.
At-the-Money (ATM) Covered Call
The strike price equals the current stock price. ATM calls offer higher premium because the strike is more likely to be reached. For AAPL at $200, selling the $200 call might pay $4.00 ($400 premium). You collect $400 but your shares are likely to be called away if AAPL stays flat or rises. Best for a neutral or slightly bearish outlook where you are willing to sell the stock at the current price.
In-the-Money (ITM) Covered Call
The strike price is below the current stock price. ITM calls offer the highest premium but almost guarantee your shares will be called away. You are essentially agreeing to sell your shares at a price below market value in exchange for a large upfront premium. This is rarely used because you lock in a loss on the stock while collecting premium. Some investors use ITM covered calls to exit a position with known total return. Understand how delta affects covered call behavior →
Selecting Expiration and Managing Theta Decay
The expiration date you choose directly impacts your premium income and risk profile. Theta decay (time decay) accelerates as expiration approaches, which benefits covered call sellers. Weekly options (7 days) have the fastest theta decay but lowest total premium, and require frequent management. Monthly options (30 days) offer a balanced trade-off between premium income and management time. The sweet spot for covered calls is 30 to 45 days to expiration, where theta decay begins to accelerate meaningfully. Many covered call writers sell 30-45 day calls and close or roll the position at 50% of max profit (typically 15-20 days in) to capture premium while avoiding the risk of a sudden move in the final days. Annualized return = (premium received / stock price) x (365 / days to expiry). For $3 premium on $200 stock with 30 DTE: ($3 / $200) x (365 / 30) = 18.25% annualized.
Covered Calls vs Cash-Secured Puts
How to Execute a Covered Call
Covered calls require 100 shares per contract of the underlying stock
Select 30 to 45 days out for optimal theta decay and premium
OTM for upside room, ATM for higher income, based on your outlook
Place a sell-to-open order at the ask price or a limit above it
Track delta and time decay; consider closing at 50% max profit
If challenged, roll the call out in time and up in strike to avoid assignment
Is covered call trading safe?
Covered calls are the safest options strategy because your maximum loss is the same as owning the stock outright. You cannot lose more than the value of your shares declining, which also happens if you simply hold the stock without a covered call. The premium provides a small buffer against declines — if the stock drops, your loss is reduced by the premium collected. However, covered calls cap your upside. If the stock rallies 50%, you miss most of that gain because your shares are called away at the strike price. The safety comes from defined risk, but the opportunity cost of missing big rallies is real. Covered calls are safe relative to other options strategies, not safe in the sense of guaranteed returns.
What happens if the stock goes above the strike price?
If the stock price is above the strike price at expiration, your shares will be called away (assigned). You sell your 100 shares at the strike price, regardless of how high the stock has risen. You keep the premium and the profit from the strike price to your cost basis. Using the AAPL example: you bought at $200, sold the $210 call for $3. If AAPL closes at $230, your shares are sold at $210. You make $10/share on the stock plus $3/share premium = $13/share profit. You miss the $20/share of gains above $210. If you want to keep your shares, you can buy back the call option before expiration (rolling), which costs more than the premium you originally collected if the stock has risen significantly. Learn how dividends interact with covered call strategies →
How much can I make with covered calls monthly?
Monthly covered call income depends on the stock's implied volatility and the strike price you select. For a typical blue-chip stock with low-to-moderate volatility (like AAPL, MSFT, or JPM), you can expect to collect 1% to 3% of the stock's value per month in premium. On $20,000 worth of stock, that is $200 to $600 per month. Higher volatility stocks (NVDA, TSLA, AMZN) can yield 3% to 5% per month or more. Over a year, selling covered calls monthly on a stock that trades sideways can generate 12% to 36% annualized return from premiums alone, plus any dividends. However, in strong bull markets, covered call underperformance relative to buy-and-hold is significant because of capped upside. Explore income investing strategies →
Should I write covered calls on all my stocks?
No, covered calls should only be written on stocks you are willing to sell at the strike price. If you have a stock with enormous long-term growth potential (like a high-conviction growth stock), covered calls risk capping your upside and causing you to miss life-changing gains. Covered calls work best on stocks you hold for income, where you are neutral-to-slightly-bullish and willing to sell at a target price. Ideal candidates are dividend stocks, index ETFs (SPY, QQQ), and established blue-chip companies. If you would be upset about selling a stock at the strike price, do not write covered calls on it. Most covered call writers limit the strategy to 30% to 50% of their portfolio.
Related Resources
Options Trading for Beginners
Build your foundation with calls, puts, and basic terminology before trading covered calls.
Options Strategies Guide
Compare covered calls to other strategies like protective puts, spreads, and iron condors.
Option Greeks Guide
Understand delta, gamma, theta, and vega to optimize your covered call strike and expiry selection.
Dividend Investing Guide
Combine covered calls with dividend stocks for enhanced income from your portfolio.
Income Investing Guide
Compare covered calls to bonds, REITs, and other income-generating investments.
Start Here: Beginner's Investing Guide
Follow our step-by-step plan to begin investing safely.