Calculator Inputs
Formula Used
Required shares = contracts sold × shares per contract.
Gross premium = premium per share × required shares.
Net cash income = gross premium - buyback cost + dividends - fees.
Breakeven = cost basis - premium + buyback cost - dividend + fees per share.
Assigned pre-tax profit = (strike price - cost basis) × required shares + (premium - buyback + dividend) × required shares - fees.
Not assigned pre-tax result = (expiration price - cost basis) × required shares + (premium - buyback + dividend) × required shares - fees.
Estimated tax is applied only to positive profit. This is a planning estimate, not tax advice.
Example Data Table
| Scenario | Cost Basis | Strike | Premium | Expiration Price | Expected Outcome |
|---|---|---|---|---|---|
| Income focused | $50.00 | $52.50 | $2.10 | $51.00 | Premium kept, shares likely retained |
| Balanced | $50.00 | $55.00 | $1.40 | $56.00 | Shares likely assigned |
| Upside room | $50.00 | $60.00 | $0.80 | $58.00 | Smaller premium, more upside room |
How To Use This Calculator
- Enter the shares you own and the number of call contracts sold.
- Enter your stock cost basis and the current stock price.
- Add strike price, premium, fees, dividends, and days to expiration.
- Use buyback cost only when modeling an early close.
- Enter an expected expiration stock price for scenario testing.
- Press calculate to view profit, breakeven, yield, and risk values.
- Download the CSV or PDF for later review.
Covered Call Planning Guide
A covered call combines stock ownership with an option sale. You hold shares and sell a call against them. The premium creates immediate income. The trade also limits upside above the strike. That limit is the cost of collecting premium today.
Why Traders Use It
Many investors use covered calls for income. The method can fit flat or mildly bullish views. It may lower the effective stock cost. It can also add discipline around an exit price. The strike acts like a planned sale level.
Important Inputs
The calculator needs stock cost, strike, premium, contracts, fees, dividends, and time. These values shape every result. A higher premium improves breakeven. A higher strike leaves more upside. Higher fees reduce return. Dividends can improve cash flow, but assignment risk may rise near ex-dividend dates.
Understanding Results
Max profit usually happens when shares are assigned at the strike. The result includes stock gain, option premium, dividends, and fees. Breakeven shows the stock price where the overall trade stops losing money before tax. Downside cushion measures how much the premium and dividend offset a price drop.
Risk Notes
A covered call is not risk free. The stock can still fall sharply. Premium only gives limited protection. You may also miss a strong rally because gains above the strike are capped. Taxes, spreads, and early assignment can change real outcomes.
Practical Use
Run several scenarios before trading. Compare a low strike, an at-the-money strike, and a higher strike. Look at assigned return and annualized yield together. Do not choose a trade by premium alone. Check whether you are happy selling the shares at the strike.
Review Process
Start with your cost basis. Add the call premium and expected dividend. Enter realistic fees. Then test expiration prices below, near, and above the strike. Save the CSV for records. Use the PDF when comparing multiple contracts. The tool supports planning, but it does not replace advice from a qualified professional.
Position Sizing
Use contract size carefully. One standard contract controls one hundred shares. Selling too many contracts can create uncovered risk. Keep cash needs in mind. If you need the shares soon, a covered call may reduce flexibility materially during the option term.
FAQs
What is a covered call?
A covered call is a strategy where you own shares and sell a call option against those shares. The option premium creates income, but upside can be capped above the strike price.
What does breakeven mean here?
Breakeven is the adjusted stock price where the covered call position stops losing money before estimated taxes. Premium and dividends lower breakeven, while fees and buyback costs raise it.
Can a covered call lose money?
Yes. The stock can fall more than the premium received. The premium offers limited downside cushion, but it does not remove stock market risk.
What happens if the stock closes above the strike?
The shares may be assigned. You would sell the covered shares at the strike price and keep the premium, subject to fees, taxes, and broker rules.
Why include buyback cost?
Buyback cost helps model closing the call before expiration. If you plan to hold until expiration, enter zero for this field.
What is annualized yield?
Annualized yield converts the period return into a yearly estimate. It helps compare trades with different expiration dates, but it should not be treated as guaranteed performance.
Does this calculator include taxes?
It includes a simple estimated tax rate on positive profit. Real tax treatment can vary by country, holding period, account type, and assignment outcome.
Is this calculator financial advice?
No. It is an educational planning tool. Review risks, confirm numbers with your broker, and consider advice from a qualified professional before trading options.