California applies its version of RUPA at Corporations Code § 16100 et seq., and its courts have held for decades that the incidents of a joint venture are those of a partnership, so venturers owe each other disclosure and an accounting for profits. Restrictive covenants are the trap. Business and Professions Code § 16600 voids restraints of trade and § 16600.5 reaches agreements signed elsewhere. The carve-outs at § 16602 for a departing partner and § 16602.5 for an LLC member on dissolution are narrow and tied to the territory the business served.
Delaware is chosen for the freedom of contract in the Delaware Limited Liability Company Act, 6 Del. C. § 18-101 et seq., and for the Court of Chancery, which has repeatedly refused to let a party rebuild a duty waived under § 18-1101(c) through the implied covenant. Waiving fiduciary duties is a drafting decision, not boilerplate.
New York defines partnership at Partnership Law § 10(1) and enforces loss sharing more strictly than most states. Under Matter of Steinbeck v. Gerosa, a mutual promise to share profits and bear losses is an indispensable essential, and appellate courts have dismissed venture claims where losses were payable solely from one party's share of proceeds. As the home of Meinhard v. Salmon, New York also gives fiduciary carve-outs more scrutiny than Delaware.
Texas codifies formation at Business Organizations Code § 152.051 and lists five factors at § 152.052, including expressed intent, sharing of profits and losses, and participation in control. In Ingram v. Deere the Supreme Court of Texas confirmed a totality of the circumstances review, so conduct can create a venture even where a document denies one. Venture non-competes must also satisfy Business and Commerce Code § 15.50.
Florida applies § 620.8202(1), under which co-ownership of a business for profit forms a partnership regardless of intent, and its courts read joint control as the authority to bind the other venturer. A useful quirk sits at § 620.8202(2): an association formed under another statute is not a partnership under the act, so a Florida LLC is not simultaneously a general partnership between its members.