What Is Options Premium and How Is It Calculated?
Introduction
Options premium is the price paid by the buyer to the seller for the rights conveyed by the options contract. It represents the full cost of the contract — what the buyer spends, and what the seller receives. Understanding what determines premium is fundamental to any options strategy, especially income-generating strategies like iron condors that are built on collecting premium.
The Two Components of Options Premium
Every options premium consists of two components:
Intrinsic value: The amount by which the option is in-the-money right now.
- A call with strike $490 when the underlying is at $500 has $10 of intrinsic value
- A put with strike $510 when the underlying is at $500 has $10 of intrinsic value
- Out-of-the-money options have zero intrinsic value — all premium is time value
Time value: The additional premium above intrinsic value, reflecting:
- Time remaining until expiration (more time = more time value)
- Implied volatility (higher IV = more time value)
- Distance from the current price (closer to the money = more time value)
Total premium = Intrinsic value + Time value
What Determines Premium Size
Implied volatility (IV) is the single most important factor. IV reflects the market's expectation of future price movement. High IV = options are priced for large moves = higher premium for the same strike. This is why iron condor traders prefer high-IV environments — more premium is available for the same probability of success.
Time to expiration affects the time value component directly. An option with 45 DTE has more time value than the same option with 15 DTE. As expiration approaches, time value decays — a process called theta decay.
Distance from the current price determines intrinsic value. At-the-money options have the most time value. Deep out-of-the-money options have very little time value and no intrinsic value.
Why Premium Sellers Benefit from Theta Decay
When you sell an options contract (as in an iron condor), you receive the premium upfront. As time passes:
- Time value erodes (theta decay)
- The option you sold becomes worth less
- You can buy it back for less than you sold it — capturing the difference as profit
This is the income mechanism for all premium-selling strategies. You start with a credit; you profit as that credit decays.
For how this applies to iron condor mechanics, see How Iron Condors Make Money: The Mechanics Explained. For the relationship between IV and setup timing, see Best Market Conditions for Trading Iron Condors.
How Implied Volatility Rank (IV Rank) Affects Premium
IV rank measures where current IV stands relative to its historical range over the past year. An IV rank of 60 means current IV is higher than 60% of all observed IV levels in the past 52 weeks.
For iron condors:
- High IV rank (above 25–30): More premium available — favorable entry conditions
- Low IV rank: Compressed premium — smaller credits relative to the same risk
The CBOE VIX methodology is the standard reference for understanding how market-wide implied volatility is measured.
How Tradematic Uses Premium Data
Tradematic evaluates IV rank and premium levels as part of setup qualification. Positions are only opened when the available premium meets minimum credit-to-risk threshold requirements — ensuring the premium collected adequately compensates for the risk assumed.
Conclusion
Options premium consists of intrinsic value (how much the option is in-the-money) and time value (the rest). Implied volatility and time to expiration are the primary drivers of time value. Premium sellers benefit as time value decays toward expiration. Iron condors are built entirely on this decay mechanism — collecting premium and profiting as it erodes.
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Trading involves risk and losses can occur. Past performance does not guarantee future results. Options trading is not suitable for all investors. Only allocate capital you are comfortable risking.
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