California governs partnerships under the Corporations Code §16100 et seq., its enactment of RUPA, with limited partnerships under §15900 et seq. The state imposes a fiduciary duty framework that courts read strictly, and partners cannot eliminate the duty of loyalty by agreement, only define its boundaries. California also requires a partnership operating under a name that does not include all partners' surnames to file a fictitious business name statement with the county, a step founders routinely forget. Profit allocations and management terms set in your agreement will control over the statutory defaults, but the underlying fiduciary obligations survive.
New York stands apart by retaining its older Partnership Law rather than fully modernizing to current RUPA, so several defaults differ from the uniform model, particularly around dissolution and a partner's power to force a winding-up. New York also enforces Article 8-B registration requirements for limited liability partnerships, common among the state's law and accounting firms. Because New York's defaults are less partner-friendly on continuity, an explicit dissociation and continuation clause matters more here than in RUPA states. Drafting to the statute rather than a generic template is not optional in New York.
Texas consolidates everything into the Business Organizations Code, with general partnerships under Chapter 152, limited partnerships under Chapter 153, and shared provisions in Chapter 154. §152.204 BOC codifies the duties of loyalty and care, while §153.102 preserves the rule that a limited partner who participates in control can become liable to third parties who reasonably believed they were a general partner. Texas LLPs also carry an annual report obligation to the Secretary of State, due each June 1, and a lapse terminates the liability shield. The state's franchise tax reaches most partnerships, a planning point worth flagging before you choose the structure.
Delaware runs on the Delaware Revised Uniform Partnership Act, 6 Del. C. §15-101 et seq., and is the jurisdiction of choice for sophisticated partnerships precisely because it gives partners the widest freedom of contract. Delaware permits partners to expand, restrict, or even largely eliminate fiduciary duties in the agreement, subject only to the implied covenant of good faith and fair dealing. The Court of Chancery's expertise in entity disputes is a real asset when money is at stake. If you select Delaware law while operating elsewhere, confirm you can also register as a foreign partnership in your home state.
Florida governs through Chapter 620, Florida Statutes, covering both its RUPA enactment and its Revised Uniform Limited Partnership Act. Florida follows the entity theory and the dissociation framework, so a departing partner does not automatically dissolve the firm where the agreement provides for continuation. The state requires limited partnerships and LLPs to file with the Division of Corporations and maintain a registered agent. Florida's lack of a state income tax makes the partnership pass-through especially attractive, which is part of why the structure is so common among the state's real estate and service businesses.