Customization is the feature, and it is also the cost. A listed futures contract fixes the quantity, the grade, the delivery point and the expiration month, which is what allows thousands of strangers to trade it interchangeably. A forward fixes nothing in advance, so the two parties can match the contract precisely to the exposure being hedged. The price of that precision is that the contract is not fungible: there is no ready market to sell it into, and unwinding usually means negotiating with the same counterparty or entering an offsetting contract that leaves both positions outstanding. The CFTC's own glossary adds a detail most descriptions omit: in a forward "a price may be agreed upon in advance, or there may be agreement that the price will be determined at the time of delivery", so fixing the price today is the usual purpose rather than a defining feature.
No clearing house means the credit question never goes away. In a futures market a clearing house interposes itself between the two sides and guarantees performance, and daily mark-to-market settles the running gain or loss in cash so neither side accumulates a large unpaid exposure. A forward has neither mechanism by default. The gain or loss accrues invisibly until settlement, and the party sitting on the gain is exposed to the other party's ability to pay it. That is why forwards are overwhelmingly a dealer and corporate instrument: the participants are credit-assessed, and the contracts often carry negotiated collateral terms precisely to reproduce what a clearing house would have provided. The CFTC's glossary states the contrast in one sentence: "Forward contracts impose upon each party the risk that the counterparty will default, but futures contracts executed on a designated contract market are guaranteed against default by the clearing organization."
The two statutory carve-outs, and the condition on the second one. The older exclusion is in the definition of "future delivery" at 7 U.S.C. 1a(27), quoted above: a cash commodity sold for deferred shipment or delivery is not a future. The newer one sits inside the post-2010 definition of "swap". 7 U.S.C. 1a(47)(B)(ii) provides that the term "swap" does not include "any sale of a nonfinancial commodity or security for deferred shipment or delivery, so long as the transaction is intended to be physically settled". Read carefully, that is not a blanket exemption for anything called a forward. It reaches nonfinancial commodities and securities, and it is conditioned on an intent to settle physically. A privately negotiated deferred-delivery contract that is designed to be cash settled, or that sits on a financial commodity, is outside that particular exclusion, and whether some other provision reaches it is a fact-specific legal question rather than something a general definition can answer.
Where an individual actually meets one. Rarely head-on, and usually through something else. A globally invested fund with a currency-hedged share class typically uses forward contracts to neutralize exchange-rate movements. A farm or small manufacturer may contract forward with a buyer or supplier as ordinary commercial practice, often without either side calling it a derivative. And anyone dealing across borders on a known future date, a property purchase, a tuition bill, a business payment, can in principle ask a bank to fix the exchange rate forward, though pricing and minimums make that a business tool more often than a household one.
One tax consequence worth knowing before entering one against stock you already own. The constructive-sale rules at 26 U.S.C. 1259 name forwards expressly: under 1259(c)(1)(C), entering into "a futures or forward contract to deliver the same or substantially identical property" is a constructive sale of an appreciated financial position, which triggers recognition of the gain as though the position had been sold. So using a forward to lock in the value of an appreciated holding can produce the tax consequence the holder was trying to postpone. This is one of the few places where a forward reaches an individual investor's tax return directly, and it is worth professional advice before rather than after.