The Complete Covered Call Profit Formula
Calculating covered call profit requires understanding three scenarios: profit when the stock stays below the strike (option expires worthless), profit when the stock is above the strike (shares are called away), and the breakeven point where you neither gain nor lose. Each scenario uses a slightly different formula, but the core math is straightforward. Mastering these formulas allows you to evaluate any covered call trade in seconds.
The profit on a covered call depends on two income streams: the option premium collected at trade entry, and any capital appreciation in the stock up to the strike price. The premium is known at the time you sell the call, but the stock component depends on where the price ends up at expiration.
Core Profit Formulas
- 1Max profit = ($105 - $95 + $3.0) x 100 = $1,300
- 2Breakeven = $95 - $3.0 = $92.0
- 3Static return = $3.0 / $95 = 3.16%
- 4If-called return = $13.0 / $95 = 13.68%
- 5Annualized = 3.16% x (365/30) = 38.42%
Profit Formula in Different Scenarios
| Stock at Expiry | Formula Used | P&L/Share | Total P&L |
|---|---|---|---|
| $85 | $85 - $95 + $3.0 | -$7.00 | -$700 |
| $92 (BE) | $92 - $95 + $3.0 | $0.00 | $0 |
| $95 | $95 - $95 + $3.0 | +$3.00 | +$300 |
| $105 | $105 - $95 + $3.0 | +$13.00 | +$1,300 |
| $115 | $105 - $95 + $3.0 (capped) | +$13.00 | +$1,300 |
Above the strike price, the profit formula always yields the same result regardless of how high the stock goes. That is because gains above the strike are given up to the call buyer. Below the breakeven, losses increase dollar-for-dollar with the stock decline.
Common Mistakes in Profit Calculations
- Forgetting to subtract purchase price from the strike in the if-called formula
- Using the ask price instead of the bid price for premium estimation
- Not accounting for commissions and assignment fees
- Confusing per-share values with per-contract values (multiply by 100)
- Comparing absolute dollar returns instead of percentage returns across different positions