A covered call sells the right to buy shares you already own at a strike price you choose, in exchange for premium paid today. Enter your position and option details to see premium income, static return, downside breakeven, and the gain if your shares get called away.
| Position | Premium | Static Return | Breakeven | If Assigned |
|---|---|---|---|---|
| 100 sh @ $50, sell $55 call @ $3.00 | $300 | 6.00% | $47.00 | $800 (16.00%) |
| 200 sh @ $25, sell 2× $30 calls @ $1.50 | $300 | 6.00% | $23.50 | $1,300 (26.00%) |
| 100 sh @ $100, sell $110 call @ $5.00 | $500 | 5.00% | $95.00 | $1,500 (15.00%) |
| 500 sh @ $40, sell 5× $45 calls @ $2.00 | $1,000 | 5.00% | $38.00 | $3,500 (17.50%) |
Static return ignores any change in share price — it is purely premium ÷ capital. "If assigned" adds the premium to the gain from selling shares at the strike instead of your cost basis.
A covered call means you own 100 shares of a stock (per contract) and sell someone the right — not the obligation — to buy those shares from you at a set strike price before an expiration date. In exchange, you collect a premium in cash today.
Static return = premium ÷ capital at risk. It measures income only and assumes the stock is unchanged. Total return if assigned = (premium + gain to strike) ÷ capital. Covering a $5,000 position for a $300 premium is a 6% static return for that period; annualize it only if you can repeat it reliably.
Only sell calls on shares you are genuinely willing to part with at the strike. Choose strikes above your cost basis so an assignment is still a profit. Earnings dates and dividends raise early-assignment risk, and a sharp rally means you forfeit gains above the strike.
Selling a covered call converts a slice of your stock's potential upside into immediate cash. On a stable or slowly rising position, that premium is pure income — a way to get paid for the shares you were holding anyway. The trade-off is asymmetric: your maximum gain is capped at the strike, while your downside is only partially cushioned by the premium.
The strategy suits investors who hold quality shares long term, expect limited near-term appreciation, and want to lower their effective cost basis over time. It is not a hedge against a crash — a few hundred dollars of premium rarely offsets a 20% decline — and it is generally unsuitable for a position you expect to double.
A 6% static return on a 30-day option looks spectacular annualized (roughly 72%), but that assumes you can repeat it every month without ever being assigned or seeing the stock fall. Realistic covered-call programs experience months where the stock drops, assignment interrupts the chain, or premiums compress. Treat the static return as the number that actually happened, and the annualized figure as an optimistic ceiling.
Compare your covered-call yield against simply holding the shares plus the dividend. If the premium is smaller than the dividend you risk forfeiting through early assignment, the trade may destroy value.
⚠️ Important: This calculator estimates premium income and returns for a covered call position and does not model commissions, assignment probability, dividends, or tax treatment. Options involve risk and are not suitable for all investors. Figures are illustrative only and are not investment advice — review your strategy with a licensed professional.