Cash-Based

Cash-based, or "cash-settled," describes a contract — usually an option or future — where fulfilling the contract at expiration means paying or receiving money, rather than delivering an actual stock, commodity, or other asset.

Here's how it plays out: a normal stock option, when exercised, results in shares of stock actually changing hands — 100 shares per contract move from a seller's account to a buyer's. A cash-based option skips that step entirely. Instead, the exchange calculates the dollar value the contract is worth at settlement (based on where the underlying index or asset closed), and that amount is simply credited or debited in cash. Nothing physical or even any shares are transferred.

This matters most with index options (like those on a broad market index) and many futures contracts, where "delivering the S&P 500" or "delivering a basket of stocks" isn't practical. Cash settlement solves that by converting the outcome straight into dollars.

The nuance that trips people up: cash-based has nothing to do with whether YOU used cash or margin to buy the contract, and nothing to do with a "cash account" at your broker. It refers purely to how the contract settles at the end — with money, not with the underlying thing itself. A trader can hold a cash-settled option in a margin account, or a physically-settled option in a cash account; the two ideas are unrelated.