What is a good premium for a covered call?

A good premium generates at least 1% of the stock price per month for OTM calls. For example, on a $100 stock, a monthly OTM call should yield at least $1.00 per share ($100 per contract). ATM calls typically yield 2-4% per month.

Why are premiums higher for some stocks than others?

Stocks with higher implied volatility have higher premiums because the market expects larger price movements. Growth stocks, biotech, and tech typically have higher IV (and premiums) than utilities and consumer staples.

Does the strike price affect the premium?

Yes. ATM strikes have the highest premiums. As you move OTM, premium decreases. As you move ITM, total premium increases but most of the additional amount is intrinsic value, not time value.

When is the best time to sell for maximum premium?

Sell when IV percentile is above 50% (premiums are above average), target 30-45 DTE for optimal theta, and avoid selling right before earnings unless you understand the risk.

How to Calculate Covered Call Premium

Step-by-step guide to calculating and estimating covered call premium using Black-Scholes and practical rule-of-thumb methods.

Written by Sarah Chen, CFP

Certified Financial Planner

Fact-checked by Dr. James Wilson, PhD

Options Strategy Researcher

Published: March 27, 2026Covered CallsFact-Checked

Input Values

Stock Price

Current stock price.

Strike Price

Call strike price.

Implied Volatility

Annualized implied volatility.

Days to Expiration

Calendar days to expiry.

Risk-Free Rate

US Treasury yield.

Dividend Yield

Annual dividend yield.

Results

Theoretical Call Price

$0.00

Intrinsic Value$0.00

Time Value$0.00

Delta

0.00

Theta (daily)$0.00

Results update automatically as you change input values.

Step-by-Step: How to Calculate Covered Call Premium

Calculating covered call premium means determining how much income you will receive when you sell a call option against your stock. While the market sets the actual price, understanding the math behind premium pricing helps you identify the best times to sell and the most profitable strike prices to choose. There are two approaches: the theoretical Black-Scholes calculation and practical estimation methods.

For most covered call traders, the practical approach is more useful. You do not need to manually solve Black-Scholes equations -- your broker provides real-time option prices. However, knowing what drives those prices helps you sell at the right time and select the best strikes for maximum income.

Two Methods for Calculating Premium

Method 1: Black-Scholes (Theoretical)

C = S * N(d1) - K * e^(-rT) * N(d2)

Where:

S = Stock price

K = Strike price

T = Time to expiration in years

N() = Normal distribution function

Method 2: Quick Estimate (Practical)

ATM Premium ≈ 0.4 x Stock x IV x sqrt(DTE/365)

Where:

Stock = Current stock price

IV = Implied volatility (decimal)

DTE = Days to expiration

Premium Calculation Both Methods

Given

Stock

$200

Strike

$210

30%

DTE

30 days

Calculation Steps

1Quick estimate (ATM): 0.4 x $200 x 0.30 x sqrt(30/365) = $6.88
2For 5% OTM, multiply by ~0.5: $3.44
3Compare to actual bid price from your broker's option chain
4If actual bid > estimate, premium is rich (favorable to sell)
5If actual bid < estimate, premium is cheap (consider waiting)

Result

The quick estimate suggests approximately $3.44 for a 5% OTM call. Check your broker for the actual market price.

What Drives Premium Higher or Lower

Premium Drivers and Their Effects
Factor	Higher Premium When...	Lower Premium When...
Implied Volatility	IV is elevated (>50th percentile)	IV is low (<30th percentile)
Time to Expiry	More days remaining	Fewer days remaining
Strike Distance	Closer to stock price (ATM)	Further from stock price (deep OTM)
Interest Rates	Rates are higher	Rates are lower
Dividends	Lower dividend yield	Higher dividend yield (for calls)

Practical Tip

You do not need to calculate premium yourself for actual trading. Your broker's option chain shows real-time bid/ask prices. The calculation knowledge helps you understand WHY premiums are high or low and make better timing decisions.

How to Find and Evaluate Premium

Open the Option Chain

Navigate to your stock on your broker's platform and select 'Options' or 'Option Chain.'

Select the Expiration

Choose the monthly expiration 30-45 days out for optimal premium.

Read the Bid Column

The bid price is what you will receive. Focus on bid prices at strikes 3-7% above the current stock price.

Compare Premium Yield

Divide the bid price by the stock price. This is your premium yield. Target at least 1% for monthly calls.

Check IV Percentile

Many brokers display IV rank or IV percentile. Premiums are most attractive when IV percentile is above 50%.

Premium Estimation at Different Strikes

Estimated Premiums: $200 Stock, 30% IV, 30 DTE
Strike	Distance	Est. Premium	Premium Yield
$195 (ITM)	5% ITM	$15.50	7.75%
$200 (ATM)	ATM	$6.88	3.44%
$205 (OTM)	~3% OTM	$3.44	1.72%
$210 (OTM)	~5% OTM	$1.72	0.86%

Frequently Asked Questions

The theoretical premium is calculated using the Black-Scholes model. For practical purposes, use the quick estimate: ATM premium ≈ 0.4 x Stock Price x IV x sqrt(DTE/365). For OTM options, reduce by a factor based on distance from the money. Or simply look at the bid price on your broker's option chain.

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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