Knowing the option premium is similar to knowing the cost of your trading approach. The premium is the cost (or credit) of joining that contract, regardless of whether you are buying or selling options. But how does this price get set, and why does it fluctuate?
What is Option Premium?
The amount that the buyer of an options contract pays to the seller (writer) is known as the option premium. The expense of obtaining the right—but not the responsibility—to purchase or sell the underlying asset at a given strike price on or before the expiration date is what this deposit is, not a refund.
There are two types of options:
Call Option: The option to purchase the asset.
Put Option: The ability to sell the asset.
Since one options contract normally represents 100 shares, the total premium is equal to the option premium × 100, even though the premium is offered on a per-share basis.
Why Is Option Premium So Important?
It represents the maximum loss incurred by the option buyer.
The seller (writer) assumes greater risk in exchange for the largest initial profit.
It stands for market emotion, volatility, and temporal value.
How is Option Premium Calculated?
The premium isn’t random—it’s based on several key factors. Here’s what drives it:
| Factor | What It Means | Impact on Premium |
| Intrinsic Value | Difference between stock price and strike price | Higher value = higher premium |
| Time Value | Time remaining until expiration | More time = higher premium |
| Volatility | Expected price fluctuation in the underlying asset | Higher volatility = higher premium |
| Interest Rates | Cost of money over time | Higher rates = slightly higher premium (mostly for call options) |
| Dividends | Expected payouts on the underlying stock | Affects pricing, particularly for calls |
Simplified Formula: Option Premium = Intrinsic Value + Time Value
The whole premium for “out of the money” options is made up of time value. Intrinsic value is important for “in the money” options.
Real- Example
Imagine a call option on stock XYZ with:
– Strike Price: ₹100
– Stock Price: ₹110
– Time to Expiry: 30 Days
– Volatility: Moderate
Intrinsic value = ₹110 – ₹100 = ₹10
Let’s say time value = ₹5
Premium = ₹10 + ₹5 = ₹15
That ₹15 is what you’d pay to enter the position.
Conclusion
An important aspect of options trading is the option premium, which has a direct impact on trading strategies, profits, and losses. Understanding how premiums are structured—through intrinsic value and time value—allows traders to evaluate opportunities, manage risk, and make more informed choices.
Whether you’re buying or selling options in the derivatives market, knowing what drives premium changes can give you an advantage.
Disclaimer: This blog is not meant to be an investment advisory but is purely informational. Always research before making any investment decision or consult a qualified financial counselor. Past performance is no guarantee of future results.
