A speaking engagement that is definitely confirmed as in, "I've got a firm offer for Baltimore on that date." A firm offer is one that becomes contractually binding upon acceptance of the offer by the third party.

An offer to buy the property as outlined in the Offer to Purchase with no conditions attached.

An offer to purchase delivered to the potential Vendor by a potential Purchaser who will not negotiate any changes to the offer.

An offer which is unchangeable and binding within a short timespan, usually no more than 24-48 hours. A firm bid is the equivalent of an option with the only difference that, as a rule, no special fee is requested for it; it can be considered as a free, very-short term option.

An offer made by a potential buyer that will not be further negotiated.

(opposite of “firm bid”)

an offer to sell a security at a set price

A firm offer is an offer defined by UCC 2-205 of the Uniform Commercial Code of the United States. It holds merchants to a high standard of care in making an offer by certain offers irrevocable for a certain length of time. It in essence creates an option contract without any consideration.