Free Calculator
Covered Call Calculator
Enter your cost basis, call strike, premium, and contracts to see premium collected, max profit if called, breakeven, static return, and if-called return — with an instant payoff chart and formula breakdown.
Sell to open (short call)
Premium Collected
$200
Max Profit
$700
if called away at $55
Max Loss
-$4,800
theoretical, if stock goes to $0
Breakeven
$48.00
Static Return
4.0%
if stock is flat, premium / cost basis
If-Called Return
14.0%
total return if shares are called away
Actually placing this Covered Call?
Track it in your journal — free, no credit card required — and see if it pays off once you close it.
What is a covered call?
A covered call is one of the most popular income strategies for stock investors. You already own (or simultaneously buy) at least 100 shares of a stock, then sell a call option against those shares. The call buyer pays you a premium up front — that premium is yours to keep no matter what happens next.
The tradeoff: if the stock rises above the call's strike price by expiration, your shares will be “called away” (sold) at that strike. You cap your upside in exchange for immediate income. If the stock stays flat or drops modestly, you keep your shares and the premium, which lowers your effective cost basis.
Covered call formulas & calculations
Understand the core mathematics behind your covered call position before you enter an order:
Premium Collected
Call Premium × 100 × Contracts
Immediate cash deposited into your brokerage balance.
Max Profit (If Called)
(Strike − Cost Basis + Premium) × 100 × Contracts
Achieved when the stock trades at or above the strike at expiry.
Breakeven Point
Cost Basis − Premium Received
Your effective share cost basis reduced by option income.
Max Loss (Theoretical)
(Cost Basis − Premium) × 100 × Contracts
Worst-case scenario if the stock drops to $0.00.
Static Return (%)
(Premium ÷ Cost Basis) × 100
Return if the stock stays unchanged and the call expires worthless.
If-Called Return (%)
((Strike − Cost Basis + Premium) ÷ Cost Basis) × 100
Total return combining share appreciation up to strike plus premium.
How to Enter Data from Fidelity, Schwab, or ThinkorSwim
Whether you are using Fidelity Active Trader Pro, Charles Schwab, Robinhood, or ThinkorSwim, pulling values into this calculator takes only three steps:
3 Expiration scenarios: What happens to your trade?
Scenario 1: Stock Finishes Below Strike (Out of the Money)
The call option expires worthless. You keep 100% of the premium collected, your cost basis is permanently lowered, and you still own all 100 shares. You are now free to sell another covered call for the next cycle.
Scenario 2: Stock Finishes Above Strike (In the Money / Called Away)
Your shares will be automatically assigned and sold at the strike price. You achieve your Max Profit (If-Called Return), keep the original option premium, and cash out of the stock position.
Scenario 3: Stock Plummets Sharply (Managing the Downside)
The short call cushions the blow by the amount of premium collected, but cannot prevent unrealized paper losses if the stock drops significantly. At this stage, traders often consider rolling down the call to a lower strike for additional credit or holding for a rebound.
Worked example
You bought 100 shares at $50 (cost basis). The stock is now trading at $52. You sell 1 call at the $55 strike for $2.00 premium:
- Premium collected: $2.00 × 100 = $200
- Max profit: ($55 − $50 + $2.00) × 100 = $700, if called away at $55
- Max loss: ($50 − $2.00) × 100 = $4,800, theoretical if stock goes to $0
- Breakeven: $50 − $2.00 = $48.00
- Static return: $2.00 ÷ $50 = 4.0%
- If-called return: $7.00 ÷ $50 = 14.0%
These are the exact defaults loaded in the calculator above — change any field to model your own trade.
Common mistakes
- Selling a call with a strike below your cost basis — if the stock rises and you're called away, you lock in a guaranteed loss on the shares (the premium might not fully offset it).
- Chasing high premium on earnings announcements or high-IV names without accounting for gap risk. A stock that jumps 15% overnight will blow through your strike, and you lose all the upside above it.
- Forgetting that the theoretical max loss is your full cost basis minus the premium collected. If the stock craters to zero, owning the shares is the risk — the short call only reduces that loss by the premium.
- Not considering that being called away means giving up all further upside beyond the strike. If you're bullish long-term on the stock, selling a covered call too close to the money can cost you more in missed gains than you earned in premium.
Track Your Covered Calls Forever — 100% Free
Generic day trading journals charge $39 to $49 per month just to track basic trades. OptionTrail includes full, unrestricted logging for Covered Calls and Cash-Secured Puts on the Free Plan. Record your stock legs, rolls, strike adjustments, and realized income without paying a subscription.
FAQ
Covered call questions, answered.
What is a covered call?
A covered call is an income strategy where you own at least 100 shares of a stock and sell (write) a call option against those shares. You collect the option premium up front in exchange for capping your upside — if the stock rises above the call's strike price, your shares will be called away at that strike.
How do you calculate max profit on a covered call?
Max profit = (call strike − cost basis + premium received) × 100 × contracts. This represents the best-case scenario where the stock is at or above the strike at expiration — you keep the premium and also capture any appreciation from your cost basis up to the strike price.
How do you calculate the breakeven on a covered call?
Breakeven = cost basis − premium received. The premium you collect lowers your effective cost basis. If the stock drops to that level at expiration, you break even on the combined position (stock loss offset by the premium kept).
What is the difference between static return and if-called return?
Static return is the premium you collect divided by your cost basis — it measures your income if the stock is flat and the call expires worthless. If-called return includes both the premium and any capital gain from cost basis to strike — it measures your total return if the shares are called away. If your strike is above your cost basis, if-called return is always higher than static return.
How do I pull option chain values from Fidelity or Schwab into this calculator?
Log into your Fidelity or Schwab account, navigate to the Option Chain for your ticker, and look up the expiration date you plan to trade. Find your desired strike under the Calls column. Use the Bid price (or Midpoint between Bid and Ask) as your premium input. Enter your actual share purchase price as the cost basis.
Is a covered call bullish or neutral?
Mildly bullish to neutral. You profit most if the stock rises to the strike price but not beyond it, letting you keep your shares and the full premium. It underperforms holding the stock outright if the stock rallies sharply above the strike.
Does this calculator use real-time option prices?
No — this is a manual-input calculator. Enter the strike and premium from your broker's option chain to model the trade before or after you place it.
Related calculators
Weighing income against directional or multi-leg trades? Try the full options profit calculator to model any strategy side by side.
Get Started
Your edge is already in your trades.
OptionTrail helps you find it.
Free to start. No credit card required.