If you've started buying options, you've paid a "premium." It's the price that shows up when you buy a Nifty or Bank Nifty call or put. But most new traders don't actually know what that number is made of, and that gap is one of the quietest reasons beginners lose money.
Let's fix that, in plain language. No formulas that need a finance degree.
What "premium" actually means
The premium is simply the price of the option. When you buy an option, you pay the premium to the seller, once, up front. It's yours to lose. If you buy a Bank Nifty call for ₹120 and one lot is 35 units, you've paid ₹120 × 35 = ₹4,200. That ₹4,200 is the premium. It is not a deposit you get back. It's the cost of the bet.
So far, simple. The important part is what that ₹120 is made of, because it's actually two very different things added together.
The two parts of every premium
Every option premium is just this: intrinsic value + time value. That's the whole thing. Let's take them one at a time.
Intrinsic value is the "real worth right now." It's how much the option would be worth if the market closed this second. Say Nifty is at 22,100 and you hold a call option with a strike of 22,000. That call lets you buy at 22,000 while the market is at 22,100, so it's genuinely worth 100 points right now. That 100 is intrinsic value: real, solid worth.
If Nifty were below 22,000, that same call would have zero intrinsic value, because the right to buy at 22,000 is useless when the market is cheaper. Nothing worth exercising, today.
Time value is what you pay for "maybe." It's the rest of the premium, the part that isn't real worth yet. You're paying for the chance that the option becomes more valuable before it expires. The more time left, and the more the market is bouncing around, the more that "maybe" is worth, so the more time value costs.
Premium minus intrinsic value equals time value. If that 22,000 call is trading at ₹130 and has ₹100 of intrinsic value, the other ₹30 is time value: you're paying ₹30 purely for "it might go higher before expiry."
The trap most beginners walk straight into
Here's the part the textbook definitions skip, and the part that actually costs you.
New traders love "cheap" options. The Nifty call that costs ₹8 instead of ₹130 feels affordable: low risk, more lots for your money. But those cheap, far-away (out-of-the-money) options are almost entirely time value. They have little or no intrinsic value, no real worth yet. You're paying ₹8 purely for "maybe."
And here's the catch about time value: it always melts to zero by expiry. Always. Time value is the price of time remaining, and at expiry there is no time remaining, so it is gone. An out-of-the-money option that doesn't move into the money doesn't just lose some value, it goes to zero. The cheap option that felt low-risk is actually the one most likely to expire worthless.
This is why so many beginners can be "right" and still lose: they buy mostly-time-value options, the market doesn't move far enough fast enough, and the time value drains out from under them.
What makes the premium move
Three things mainly push an option's premium up or down:
The underlying's price. If Nifty moves your way, intrinsic value grows and the premium rises. This is the part beginners focus on, and it's only one of three.
Time. Every day that passes, the time-value portion shrinks a little, faster as expiry approaches. This daily bleed has a name, theta, and as an options buyer it works against you every single day you hold. We explain theta simply here.
Volatility. When the market gets jumpy, time value inflates (a bigger "maybe" is worth more). When it calms down, that inflated value can collapse, sometimes even while you're right on direction. That is implied volatility, explained here.
(There is a famous formula called Black-Scholes that prices all this precisely. You don't need it. You need the intuition above.)
The one thing to remember
When you buy an option, you're paying for two things bundled into one price: what it's worth now, and what it might become. The "might become" part costs real money and shrinks every day. As a buyer, time is working against you from the moment you pay the premium.
That's not a reason to never buy options. It's the reason to know exactly what you're paying for, and to size and time your trades around the clock that's ticking. Once you understand premium, the rest starts to make sense: why chasing a moved option overpays, and why holding a loser bleeds you twice.
SubTrades reads your tradebook and shows you what your options trades actually cost you, including the premium that decayed while you held. Auto detection of psychological patterns. Import your Zerodha, Dhan, Upstox, or Angel One trades and see it on day one. Free during the founding beta.