Expiration Date
In simple terms
The expiration date is the deadline for using an option contract. If you don't buy or sell the asset by this date, your option disappears and becomes worthless—like a coupon that expires and can no longer be used.
Definition
The date the option contract ends and becomes worthless if not exercised.
In depth
The expiration date is the predetermined timestamp at which an options contract ceases to exist and can no longer be exercised. If the option holder fails to execute the contract (buy or sell the underlying asset at the strike price) before this date, the contract becomes worthless and the holder forfeits their premium. Smart contracts on blockchain networks can enforce automatic expiration through conditional logic, triggering settlement or liquidation mechanisms when the block timestamp exceeds the specified expiration date. Different option styles—American options allow early exercise before expiration, while European options only permit exercise at the exact expiration date—affect trading strategy and valuation leading up to this critical deadline.
How does Expiration Date work?
Every option is listed with an expiration timestamp, usually a fixed hour in UTC, on weekly, monthly, or quarterly cycles. Until that moment the contract can be bought and sold freely. At expiry the exchange calculates a settlement price for the underlying, often a time-averaged index rather than a single tick, which makes it harder to manipulate. In-the-money contracts are then settled automatically in cash on most crypto venues, and everything else expires worthless. Time value erodes as the date approaches and decays fastest in the final days.
An example
Illustrative figures: a trader pays $120 for a call struck at $5,000 with 30 days to run. Twenty-five days later the underlying is still near $5,000, but the same contract is quoted near $30, because most of the time value has drained away. At expiry the settlement price is $4,980, so the contract is out of the money, pays nothing, and the full $120 is lost.
Figures are illustrative only.
What beginners get wrong
- Holding to expiry and waiting for a recovery ignores time decay, which strips value steadily and accelerates in the final week.
- Expiry times are quoted in UTC on most venues, so a contract can settle earlier in the day than a local-time reader expects.
- Assuming an in-the-money contract needs manual exercise is a common error; crypto options generally settle in cash automatically.
- Longer-dated contracts cost more premium because of the extra time, which is a price paid rather than value received for free.
Related terms
Part of
How do crypto options and derivatives work? — the subject page for options and derivatives, with all 9 of its definitions in one place.
Educational only — not financial advice.