Covered Call Calculator
Calculate the profit, breakeven, and annualized return of a covered call strategy. Enter your stock purchase price, call strike, premium received, and days to expiration to see your maximum profit, maximum loss, and visualize the P/L diagram at expiration.
What Is a Covered Call?
A covered call is an options income strategy where you own 100 shares of a stock (or multiples of 100) and sell one call option contract against those shares. By selling the call, you collect a premium upfront. In exchange, you agree to sell your shares at the strike price if the option is exercised before expiration. The strategy is called "covered" because your stock position covers the obligation of the short call.
Covered calls are popular among investors who want to generate income from stocks they already hold, especially in flat or mildly bullish markets. The trade-off is that your upside is capped at the strike price — if the stock surges well above the strike, you miss out on gains beyond that level.
How Does the Covered Call Calculator Work?
The calculator uses the standard covered call formulas:
Max Profit:
(Strike − Stock Price + Premium) × 100 × Contracts
Breakeven:
Stock Price − Premium
Max Loss:
(Stock Price − Premium) × 100 × Contracts (if stock goes to $0)
Annualized Return:
(Premium / Stock Price) × (365 / DTE) × 100
If Called Away:
(Strike − Stock Price) × 100 × Contracts + Premium Income
All values are per share. Multiply by 100 and by the number of contracts for total dollar amounts. DTE = Days to Expiration.
The calculator shows your maximum profit (if the stock closes at or above the strike at expiration), maximum loss (if the stock falls to zero), breakeven price, and annualized return. It also visualizes the P/L at expiration across a range of stock prices.
Why Use This Covered Call Calculator?
- Instant Analysis: Get max profit, max loss, breakeven, and annualized return instantly.
- Scenario Comparison: See your profit if the stock is called away, stays flat, or moves.
- P/L Visualization: Interactive charts show profit/loss at any stock price at expiration.
- Annualized Returns: Compare 7-day weeklies against 45-day monthlies on an equal footing.
- Free & Private: No registration, no data storage.
Understanding Covered Call Returns
There are several ways to measure a covered call's return:
- Static Return: The premium divided by the stock price.
- Annualized Return: The static return annualized by multiplying by (365 / days to expiration).
- If-Called Return: The return if the stock is called away at the strike price.
A covered call is best suited for neutral to moderately bullish market outlooks. You profit when the stock stays flat, rises modestly, or even declines slightly (as long as it stays above your breakeven).
❓ Covered Call Calculator FAQ
What is a covered call?
A covered call is an options strategy where you own 100 shares of stock and sell one call option against those shares. You collect a premium upfront and agree to sell your shares at the strike price if exercised.
How is the max profit of a covered call calculated?
Max profit = (Strike − Stock Price + Premium) × 100 × Contracts. This is achieved when the stock closes at or above the strike at expiration.
What is the breakeven price for a covered call?
Breakeven = Stock Price − Premium per share. The stock can fall by the amount of the premium before you start losing money.
What is the maximum loss on a covered call?
Max Loss = (Stock Price − Premium) × 100 × Contracts (if the stock goes to $0). The premium collected provides limited downside protection.
How is annualized return calculated?
Annualized Return = (Premium / Stock Price) × (365 / DTE) × 100. This lets you compare covered calls with different expiration dates.
What happens if the stock price goes above the strike?
Your upside is capped at the strike price. You'll sell your shares at the strike and keep the premium. You miss out on gains above the strike.
What happens if the stock price goes below the breakeven?
You start losing money on the position. The covered call position has the full risk of stock ownership below the breakeven.
What is the difference between a covered call and a naked call?
A covered call is "covered" because you own the underlying stock. A naked call writer does not own the underlying shares and has undefined risk.
How many shares do I need for one covered call?
One call option contract controls 100 shares. You need to own at least 100 shares of the underlying stock per contract.
What is the best strike price for a covered call?
It depends on your outlook. Out-of-the-money (OTM) strikes offer less premium but more upside potential. At-the-money (ATM) strikes offer more premium but cap upside sooner.
Does time decay help covered call sellers?
Yes. Time decay (Theta) benefits the short call leg — the option loses value as time passes, which helps the covered call seller.
Is a covered call a bullish or bearish strategy?
A covered call is typically a neutral to moderately bullish strategy. It works best when you expect the stock to stay flat or rise modestly.