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Key Facts
- State level: A business partnership generally exists when two or more people carry on a business as co-owners, but the formation test and default rules come from the law of the governing state.
- State level: A general partnership can arise from the parties’ conduct even without a formal filing or a document titled “partnership agreement.”
- State level: General partners ordinarily face personal exposure for partnership obligations, while an LP or LLP may provide statutory liability limits that depend on state law and required filings.
- Federal level: A partnership generally files Form 1065 as an information return and passes partnership tax items through to its partners rather than paying federal income tax as an entity.
- Federal and state: Legal entity classification and federal tax classification are separate questions, so an LLC may be taxed as a partnership without becoming a state-law general partnership.
What a business partnership means
A business partnership is a shared-ownership relationship, not merely a collaboration, referral arrangement, or contract between two companies. Under partnership statutes based on the Uniform Partnership Act, the central idea is that two or more persons carry on a business as co-owners for profit.
That definition focuses on the substance of the relationship. People can create a general partnership through conduct even if they never make a state filing, use the word “partner,” or sign a written agreement; sharing gross revenue alone, however, does not necessarily establish co-ownership.
This is why the broad phrase “business partnership” can describe both an intentional entity choice and a legal status that arises from how people operate. State law supplies the formation test, and state statutes and any valid partnership agreement allocate many of the rights and duties that follow.
The principal partnership forms are legally different
A general partnership is the baseline form in which the partners usually participate in management and may be personally liable for partnership obligations. Each partner can also act as an agent of the partnership for apparently ordinary business, which means one partner’s authorized or apparently authorized act may bind the entity.
A limited partnership, or LP, has at least one general partner and one or more limited partners. State filing is normally required, and the general partner and limited partners do not have the same management role or liability position.
A limited liability partnership, or LLP, is a registered form that can limit partners’ personal liability under the governing statute. The extent of that protection, eligible professions, naming rules, insurance requirements, and registration process can differ materially by state.
An LLC is not a partnership under state entity law merely because it has multiple owners or receives partnership tax treatment. It is a separate statutory form, although federal tax rules commonly classify a domestic multi-member LLC as a partnership unless it elects another permitted classification.
State default rules fill gaps in the partners’ agreement
A partnership agreement can address contributions, profit and loss allocations, voting, authority, compensation, record access, admission of new partners, transfers, departures, buyouts, dispute processes, and winding up. When the agreement is silent, the governing partnership statute supplies default rules, and some statutory rules cannot be waived.
Uniform-act principles generally give each partner management rights and treat partners as fiduciaries with duties involving loyalty, care, and good faith. The precise content and permitted modification of those duties varies because states adopt and amend partnership legislation in different ways.
Authority deserves special attention because an internal limit does not always protect the partnership in a transaction with an outsider who lacks notice of that limit. State statutes commonly treat a partner as an agent for ordinary-course business, while extraordinary acts generally require additional authorization.
Liability follows the form and the governing law
In a traditional general partnership, the partnership is responsible for its own obligations and partners may also face personal liability under state law. That exposure is a central distinction between a general partnership and limited-liability forms rather than a minor drafting detail.
LP and LLP statutes can change the result, but the label alone is not enough. Liability protection may depend on forming or registering the correct entity, maintaining required filings, and the nature of the particular obligation; a person can also remain responsible for that person’s own wrongful conduct or a separately guaranteed debt.
Federal partnership tax is a separate layer
Federal tax law uses its own definition of partnership, which includes certain unincorporated groups, pools, syndicates, and joint ventures carrying on a business or financial operation. The federal classification therefore does not answer every state-law question about formation, authority, or liability.
For federal income tax purposes, a partnership generally reports income, gains, losses, deductions, and credits on Form 1065. It ordinarily does not pay federal income tax on those items at the entity level; instead, partnership items pass through, and each partner receives a Schedule K-1 reflecting that partner’s share.
Partners are generally treated as self-employed rather than employees of the partnership for federal tax purposes. Tax allocations, distributions, basis, guaranteed payments, and self-employment tax can produce different consequences, so the simple phrase “profits pass through” is only the starting point.
How partnerships change or end
A partner’s departure does not always end the business. Modern partnership statutes distinguish a partner’s dissociation from dissolution of the partnership, and an agreement can establish buyout mechanics and continuation rules.
Dissolution begins a winding-up phase rather than making unfinished obligations disappear. The partnership typically completes pending matters, collects and applies assets, addresses liabilities, and distributes any remaining value according to the governing law and agreement.
Because formation, liability, fiduciary duties, registration, and exit rules are state-law matters while federal taxation has a separate framework, a national overview can describe the architecture but not supply one uniform rule for every business partnership.
Sources
- Uniform Law Commission, Partnership Act (1997), last amended 2013
- Illinois General Assembly, Uniform Partnership Act (1997)
- U.S. Small Business Administration, Choose a Business Structure
- U.S. Small Business Administration, Register Your Business
- Internal Revenue Service, Partnerships
- Internal Revenue Service, About Form 1065
- 26 U.S.C. § 761, Partnership Definitions
- 26 U.S.C. § 701, Partners, Not Partnership, Subject to Tax
- 26 U.S.C. § 6031, Partnership Returns
