Extrinsic value (time value) is the portion of an option’s price beyond intrinsic value — made of time value and volatility premium, and it decays to zero by expiration.

What it's made of

Extrinsic value reflects the possibility of profit before expiration — driven by how much time remains and how much implied volatility is priced in. An out-of-the-money option is entirely extrinsic value (no intrinsic). The more time and volatility, the more extrinsic value.

Why it matters

Extrinsic value is what theta decay eats — it erodes every day and accelerates into expiration, hitting zero at the bell. It’s why buying options is a race against time, why OTM options expire worthless, and why high IV makes options expensive. On 0DTE, extrinsic value vanishes fast.

Extrinsic value is the price of possibility — time and volatility. It’s also the part that decays, which is why the clock is a buyer’s enemy.

The takeaway

Premium = intrinsic + extrinsic. Extrinsic is the time-and-volatility part that decays; on 0DTE it’s most of a near-the-money option’s value and it evaporates within the day. Understanding it explains decay, IV pricing, and why timing matters.