If you’re learning options trading, you’ve probably noticed something immediately: options don’t cost the same as stocks.
Instead of paying $100 or $200 per share like you would with many U.S. stocks, you might see an option contract priced at something like:
- $0.80
- $2.25
- $6.50
That price is called the options premium, and it’s one of the most important concepts to understand before placing your first options trade.
In simple terms:
The options premium is the price you pay to buy an option contract.
The premium determines how much money you risk, what your break-even point is, and how big a move the stock needs to make for you to profit.
In this beginner-friendly guide, we’ll explain what option premium means, how it’s calculated, what affects it, and how real options premiums work in the U.S. stock market.
What Is an Option Premium?
An option premium is the amount of money an investor pays to purchase an options contract.
In simple terms:
The options premium is the “price tag” of an option.
Just like a stock has a price, an option has a price too—but it’s priced differently because it’s a contract that expires.
Premium vs. Total Cost (The 100-Share Rule)
In the U.S., most stock options represent 100 shares of the underlying stock.
So option premiums are quoted per share, but you pay for 100 shares worth of that option.
Example:
- Option premium: $2.50
- Contract size: 100 shares
Total cost = $2.50 × 100 = $250
That $250 is what you pay to buy one call or put contract.
Why the Options Premium Matters So Much
The option premium matters because it directly impacts:
- how much you can lose (as an option buyer)
- how much the stock must move for you to profit
- whether the trade is “cheap” or “expensive”
- the risk level of the option contract
The Most Important Beginner Rule
If you buy an option (call or put), then:
✅ Your maximum loss is the premium paid
(ignoring commissions/fees, if any)
So if you buy a call option for $250 and it expires worthless, you lose $250.
This is one reason options are popular: the downside is defined upfront.
Options Premium Example (Simple Call Option)
Let’s use a realistic U.S. market scenario.
Stock ABC is trading at $100 per share.
You buy one call option with:
- Strike price: $105
- Expiration: 30 days away
- Premium: $2.00
What You Pay
Premium paid = $2.00 × 100 = $200
That $200 is:
- your cost to enter the trade
- your maximum loss if the option expires worthless
Options Premium Example (Put Option)
Now imagine you want downside protection.
Stock ABC is still trading at $100 per share.
You buy one put option with:
- Strike price: $95
- Expiration: 30 days away
- Premium: $2.00
What You Pay
Premium paid = $2.00 × 100 = $200
Same cost, different direction.
The key takeaway:
- call options usually benefit from rising prices
- put options usually benefit from falling prices
But both require paying a premium upfront.
What Makes Up an Options Premium? (Intrinsic Value + Time Value)
Option premiums aren’t random. They’re made up of two main parts:
1) Intrinsic Value
Intrinsic value is the option’s “real” value if it were exercised right now.
- Call intrinsic value: Stock price − Strike price (if positive)
- Put intrinsic value: Strike price − Stock price (if positive)
If the option is out of the money, intrinsic value is zero.
Intrinsic Value Example (Call)
Stock ABC is at $110
Call strike price is $100
Intrinsic value = $110 − $100 = $10
That call is worth at least $10 per share because it lets you buy at $100 when the market is $110.
2) Time Value (Extrinsic Value)
Time value is everything extra you pay beyond intrinsic value.
It represents the possibility that the option could become more profitable before it expires.
Time value depends on:
- time remaining until expiration
- market volatility
- interest rates (more advanced impact)
- supply and demand for the contract
Time Value Example
If a call option is trading for $12 and has $10 of intrinsic value:
Time value = $12 − $10 = $2
That $2 is basically the market’s “extra” price for having time left.
How Options Premium Affects Break-Even Price
A lot of beginners understand strike price—but forget premium affects profit.
To profit at expiration, your option must overcome both:
- the strike price
- the premium you paid
Call Option Break-Even Formula
Break-even = Strike price + premium paid
Example:
- Strike price: $105
- Premium: $2
Break-even = $107
So at expiration, Stock ABC must be above $107 for you to profit.
Put Option Break-Even Formula
Break-even = Strike price − premium paid
Example:
- Strike price: $95
- Premium: $2
Break-even = $93
So at expiration, Stock ABC must fall below $93 for you to profit.
What Determines an Option’s Premium? (The Big Factors)
Option premiums change constantly, often second-by-second, based on several key factors.
1) The Current Stock Price
If the stock price rises:
- call option premiums usually rise
- put option premiums usually fall
If the stock price falls:
- put option premiums usually rise
- call option premiums usually fall
2) Strike Price (Moneyness)
Options closer to being profitable usually cost more.
For calls:
- lower strike calls (more “in the money”) cost more
- higher strike calls (more “out of the money”) cost less
For puts:
- higher strike puts cost more
- lower strike puts cost less
3) Time Until Expiration (More Time = More Premium)
More time means a higher chance the stock can move enough, so:
Longer-dated options generally have higher premiums.
Example:
- A call expiring next week might cost $1.00
- The same strike expiring in three months might cost $4.50
Short-term options are cheaper, but time decay hits them harder.
4) Volatility (Big Premium Driver)
Volatility is one of the biggest reasons option premiums can be expensive.
If a stock is known to make big moves—especially around earnings—options may cost more because the chance of a big move is higher.
When volatility is high:
- call premiums increase
- put premiums increase
This is because big moves in either direction make options more valuable.
5) Supply and Demand (Market Behavior)
Sometimes premiums rise simply because everyone wants the same trade.
Example:
- Investors fear a market crash and rush to buy put options
- Put premiums increase because demand spikes
Or:
- A “hot” stock trends online and traders rush to buy calls
- Call premiums increase due to demand
Options pricing is market-driven, and emotions can absolutely impact premiums.
Why Option Premiums Can Drop Even If the Stock Doesn’t Move
This is a common beginner surprise.
You might buy a call option, and the stock doesn’t really change—yet your option value still goes down.
Why?
Reason #1: Time Decay (Theta)
Options lose time value every day as expiration approaches.
Even if the stock stays flat, time value fades.
That’s why options are often called wasting assets.
Reason #2: Volatility Drops
If you bought an option when volatility was high (like before earnings), the premium may shrink afterward even if the stock price doesn’t move much.
This is sometimes called volatility crush.
It’s one of the biggest hidden risks for beginners buying options around big events.
Realistic U.S. Example: Options Premium Around Earnings
Let’s say a major U.S. company is reporting earnings next week.
Because earnings can cause a big move, options might become expensive.
For example:
- Normal premium for a call: $2.00
- Premium just before earnings: $5.50
If earnings come out and the stock barely moves, that premium can collapse fast—even if the stock price is unchanged.
That’s why buying options right before earnings can be risky.
Buying vs. Selling Options: Who Collects the Premium?
So far, we’ve talked about buying options. But there’s another side to every trade: selling.
Option Buyers Pay the Premium
When you buy a call or put, you pay the premium.
Your potential profit can be large, but your chance of losing the premium is real.
Option Sellers Receive the Premium
When you sell (write) an option, you collect the premium upfront.
That can sound attractive, but selling options can involve significant risk—sometimes much more than buying.
Beginner tip: Many new investors start by learning option buying first, because the maximum loss is clearly defined.
Option Premium vs. Stock Price (Why Options Feel “Cheaper”)
Options can look cheap compared to stock shares, but they aren’t always cheaper in practice.
Example:
- Stock price: $100 per share
- Buying 100 shares costs $10,000
- Buying 1 call option might cost $200
It feels like you’re spending less—but you’re also buying something that can expire worthless.
So options are not automatically “better” than stocks. They’re just different tools with different risk profiles.
Key Takeaways: Option Premium Meaning in Plain English
The options premium is the price you pay to buy an option contract. It’s quoted per share but usually represents 100 shares per contract.
Here’s the quick summary:
- Option premium = the cost to buy a call or put
- Buyers can lose 100% of the premium if the option expires worthless
- Premium is made of intrinsic value + time value
- Premium changes based on stock price, strike price, time, and volatility
- Break-even depends on premium—not just strike price
- Options can lose value even if the stock doesn’t move (time decay and volatility changes)
Options premium is one of the most important concepts in options trading because it connects risk, reward, and probability all in one number. Once you understand premiums, you’re much less likely to make beginner mistakes—and much more likely to trade with realistic expectations.
Frequently Asked Questions About Option Premiums
What is an option premium?
An option premium is the price an investor pays to buy an options contract. It represents the cost of obtaining the right, but not the obligation, to buy or sell an underlying asset at a specific price before the option expires.
What factors determine an option premium?
Option premiums are determined by several factors, including the price of the underlying asset, the strike price, time remaining until expiration, market volatility, interest rates, and whether the option is in-the-money, at-the-money, or out-of-the-money.
Why do option premiums change frequently?
Option premiums change constantly because they react to real-time market conditions. Movements in the underlying stock price, changes in volatility, time decay, earnings announcements, and overall market sentiment all influenc
