Synthetic Covered Call Calculator

Analyze the synthetic covered call created with a long call and short call to replicate covered call exposure with less capital.

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Written by Michael Torres, CFA
Senior Financial Analyst
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Fact-checked by Dr. James Wilson, PhD
Options Strategy Researcher
Advanced Covered CallsFact-Checked

Input Values

$

Current price of the underlying stock.

$

Strike of the deep ITM long call (synthetic stock).

$

Price paid for the long call.

$

Strike of the short call sold.

$

Premium received from selling the short call.

Days until the short call expires.

Number of contracts.

Results

Net Capital Invested
$0.00
Capital Savings vs Stock
0.00%
Maximum Profit
$999,999.00
Breakeven Price$0.00
Annualized Return
0.00%
Results update automatically as you change input values.

What Is a Synthetic Covered Call?

A synthetic covered call replicates the risk-reward profile of a traditional covered call without owning the underlying stock shares. Instead of buying 100 shares and selling a call, you buy a deep in-the-money call option (which acts as a stock substitute) and sell a higher-strike call against it. This creates a diagonal spread that behaves similarly to a covered call but requires significantly less capital, typically 25-35% of what shares would cost.

The synthetic covered call is functionally equivalent to a poor man's covered call (PMCC) and is built using options that have different strikes and potentially different expiration dates. The long call should have a delta of 0.80 or higher so it moves nearly dollar-for-dollar with the stock. The short call is sold at a higher strike, generating premium income just like a traditional covered call. The strategy is popular among traders who want covered call income but cannot afford to buy 100 shares of high-priced stocks.

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Capital Efficiency

A synthetic covered call on a $100 stock might cost $2,500-$3,000 in capital (long call cost minus short call premium) vs. $10,000 for 100 shares. This 70-75% capital reduction amplifies your return on investment for the same premium income.

Synthetic vs. Traditional Covered Call

Capital Savings
Savings = (1 - Net Debit / Stock Price per share) × 100%
Where:
Net Debit = Long call cost minus short call premium per share
Stock Price = Cost of buying 100 shares divided by 100
Synthetic vs. Traditional Covered Call
FeatureTraditionalSynthetic
Capital required100 × Stock PriceLong Call Cost - Short Premium
Typical savings60-75% less capital
DividendsYesNo
Time decay on long legNoYes (LEAPS decay slowly)
Max lossStock to zero + premiumLong call cost - short premium
Assignment riskSimple (deliver shares)Complex (exercise long call)
Margin requirementNone (shares cover)Spread margin
Synthetic Covered Call Example
Given
Stock
$100
Long Call
$75 strike, cost $28.00
Short Call
$105 strike, premium $3.00
Days
30
Calculation Steps
  1. 1Net debit = $28.00 - $3.00 = $25.00 per share
  2. 2Capital required = $25.00 × 100 × 2 = $5,000
  3. 3Capital for shares = $100 × 100 × 2 = $20,000
  4. 4Savings = 1 - ($5,000/$20,000) = 75%
  5. 5Max profit = ($105 - $75 - $28 + $3) × 100 × 2 = $1,000
  6. 6Breakeven = $75 + $28 - $3 = $100
  7. 7Annualized return = ($1,000/$5,000) × (365/30) = 243%
Result
The synthetic covered call requires only $5,000 vs $20,000 for shares (75% savings). Max profit is $1,000, and annualized return on capital is a dramatically higher 243% due to the leverage effect.

Building a Synthetic Covered Call

Construction Steps

1
Buy Deep ITM Call (0.80+ Delta)
Purchase a call with delta of 0.80 or higher, typically 20-30% in-the-money. Use LEAPS (1-2 years) for the long leg to minimize time decay. The long call acts as your stock substitute.
2
Sell Short-Term OTM Call
Sell a call 3-5% out-of-the-money with 30 days to expiration. This generates premium income identically to a traditional covered call. Ensure the short strike is above your breakeven.
3
Verify Breakeven Is Below Short Strike
Calculate: breakeven = long strike + long cost - short premium. This MUST be below the short call strike. If breakeven is above the short strike, you lose money even at max profit.
4
Manage Monthly
Roll or let the short call expire each month. Sell a new short call for the next cycle. Continue until you want to exit the position.
5
Exit Strategy
To close: buy back the short call and sell the long call. Or if assigned on the short call, exercise the long call to deliver shares. Close the entire position if the stock drops below the long call strike.
  • Synthetic covered calls offer 3-4x leverage compared to traditional covered calls
  • No dividends are received (this is the main disadvantage)
  • The long LEAPS option slowly decays, reducing position value over time
  • Best suited for high-priced stocks where buying shares is capital-prohibitive
  • Tax treatment differs from traditional covered calls (consult a tax professional)
  • Risk of total loss if stock drops below long call strike at LEAPS expiration
!
Key Risk

Unlike stock which always has some value, your long call can expire worthless if the stock drops below its strike price. This represents a total loss of the long call investment. Always set a stop-loss and close the position if the stock declines 15-20% below the long call breakeven.

Frequently Asked Questions

A synthetic covered call uses a deep ITM long call option (instead of stock) combined with a short OTM call to replicate covered call exposure. It requires 60-75% less capital than owning shares. The long call (usually LEAPS with 0.80+ delta) moves nearly dollar-for-dollar with the stock, while the short call generates premium income just like a traditional covered call.

Sources & References

  • U.S. Securities and Exchange Commission (SEC) - Investor Education
  • Options Clearing Corporation (OCC) - Options Education
  • Chicago Board Options Exchange (CBOE) - Options Strategies
  • Hull, J.C. "Options, Futures, and Other Derivatives" (11th Edition, 2021)

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