To structure a partnership, you make two decisions in order: pick the entity type that matches the liability each partner is willing to accept, then write an agreement that replaces the state’s default rules with terms you actually negotiated. Everything else — registration, tax setup, ongoing compliance — follows from those two choices.
Pick the Entity Type First
The Revised Uniform Partnership Act (RUPA) supplies the default rules for general partnerships and LLPs in roughly 44 states and the District of Columbia.1Cornell Law Institute. Revised Uniform Partnership Act of 1997 (RUPA) Limited partnerships run on a separate model statute, the Uniform Limited Partnership Act. Which law governs your entity determines what a court will do if your agreement is silent or a dispute reaches litigation, so the entity choice has consequences well beyond the formation paperwork.
General Partnership
The simplest form. Every partner shares management equally and bears unlimited personal liability for the business’s debts. If the partnership can’t pay a creditor, the creditor can pursue any general partner’s personal bank account, home, or other assets. No state filing is technically required; two people shaking hands on a joint venture can create one. Registration is still worth doing for legal clarity and to open a business bank account.
Limited Partnership
An LP has at least one general partner who runs the business and accepts full personal liability, plus one or more limited partners whose exposure stops at what they invested. Limited partners generally stay out of day-to-day operations. In some states, a limited partner who starts making operational decisions can forfeit the liability protection. This structure fits real estate ventures and investment funds where some participants want a passive role.
Limited Liability Partnership
An LLP shields each partner from personal liability for the malpractice, negligence, or misconduct of other partners.1Cornell Law Institute. Revised Uniform Partnership Act of 1997 (RUPA) You remain responsible for your own professional errors, but a colleague’s mistake can’t reach your personal assets. Several states restrict LLP formation to licensed professions like law, accounting, and architecture; others open it to any business. Check your state before assuming it’s available.
Limited Liability Limited Partnership
An LLLP is a limited partnership that also extends liability protection to its general partner, closing the gap that leaves a standard LP’s general partner exposed. About 28 states recognize LLLPs, so this option isn’t available everywhere. The protection covers debts and obligations of the partnership and does not shield the general partner from liability caused by their own conduct.
The Multi-Member LLC Alternative
Before committing to a partnership entity, consider a multi-member LLC. By default it’s taxed exactly like a partnership — Form 1065, Schedule K-1s, pass-through income — but every member gets limited liability without anyone having to accept the unlimited exposure of a general partner. An LLC can also elect S-corporation taxation later, which can reduce self-employment taxes for active members. If liability protection matters and your profession doesn’t dictate the structure, an LLC taxed as a partnership often delivers the same tax treatment with better personal asset protection.
Why the Default Rules Usually Aren’t What You Want
If partners never sign a formal agreement, RUPA’s defaults fill every gap. Those defaults are blunt instruments built for the generic case, and they catch people off guard. Under RUPA Section 401, each partner gets an equal share of profits and bears a proportional share of losses regardless of how much capital each contributed. A partner who put in $500,000 would split profits equally with one who put in $5,000.
Every partner has equal rights in management, and each gets one vote regardless of ownership stake. Ordinary business decisions are majority-rule; anything outside the ordinary course, and any change to the agreement itself, requires unanimous consent. Partners draw no salary for their work unless the agreement says otherwise. Even admitting a new partner requires every existing partner to agree. For most groups, at least a few of these defaults will be unacceptable to someone at the table, and that alone is reason enough to put an agreement in writing.
Write the Agreement That Overrides the Defaults
A well-drafted partnership agreement is the single most important document in the business. Skipping it because the partners trust each other is a mistake experienced business attorneys see constantly. The agreement should address at least the following.
Capital Contributions and Ownership
Spell out exactly what each partner is contributing at formation — cash, property, equipment, intellectual property, or services — and assign a dollar value to each contribution. This section determines each partner’s equity percentage. Address whether partners can be required to contribute additional capital later and what happens if someone fails to meet a funding call. Common remedies include diluting the non-contributing partner’s equity or letting the other partners make the contribution in exchange for a larger share.
Profit and Loss Allocation
Profits don’t have to follow ownership percentages. A 50/50 partnership might split profits 60/40 if one partner does substantially more work. Define how distributions are timed — monthly, quarterly, annually — and whether the partnership will hold a minimum cash reserve before distributing. Partnership income is taxed whether or not it’s actually distributed, so many agreements require a minimum annual tax distribution so partners can cover the bill.
Management Authority and Voting
Define who can sign contracts, open accounts, hire employees, and commit the partnership to financial obligations. Most agreements separate day-to-day decisions any managing partner can make from major decisions requiring a vote: taking on debt above a threshold, selling significant assets, changing the core business. Specify the voting threshold for each category — simple majority, supermajority, or unanimous. A supermajority requirement for admitting new partners or amending the agreement itself is common.
Buy-Sell Provisions
The buy-sell clause is the partnership’s exit plan. It defines what happens to a partner’s interest when they die, become disabled, retire, go bankrupt, or simply want out. Without one, a departing partner’s interest becomes a source of prolonged conflict, particularly when the parties can’t agree on what it’s worth. Specify a valuation method: a fixed price updated annually, a formula based on earnings or book value, or an independent appraisal at the time of the triggering event. Many agreements combine approaches, with partners agreeing on value annually and an appraiser stepping in only when they can’t.
Dispute Resolution
Partnership lawsuits are expensive and tend to destroy the business in the process. A clause requiring mediation first, then binding arbitration if mediation fails, keeps disputes cheaper and more private than litigation. Name the organization that will administer the process and the location where proceedings will take place.
Dissolution Procedures
Outline how the business winds down if the partners decide to close or circumstances force it. Set the order of priority for settling debts: creditors first, then partners’ capital contributions, then remaining profits. If specific partners want the right to continue the business after another partner departs rather than dissolving entirely, that right needs to be written in.
Fiduciary Duties You Can’t Fully Contract Around
Regardless of what the agreement says, partners owe each other two fiduciary duties under RUPA Section 404: loyalty and care. The duty of loyalty bars secretly profiting from partnership business, representing an outside party whose interests conflict with the partnership, and competing with the partnership while it operates. Divert a business opportunity the firm should have received, and the partnership can recover the profits.
The duty of care prohibits gross negligence, recklessness, and intentional misconduct in managing partnership business. The bar sits at gross negligence, not ordinary negligence, so honest mistakes made in good faith don’t trigger liability. An agreement can define how these duties apply in practice, but most states won’t let partners eliminate the duty of loyalty entirely. Delaware allows broader waivers when every partner consents with full knowledge of what they’re giving up.
Register With the State
Most states require LPs, LLPs, and LLLPs to register with the Secretary of State. General partnerships typically have no mandatory registration, but filing a Statement of Partnership Authority is available in many states and worth doing — it creates a public record of who can act on behalf of the partnership.2U.S. Small Business Administration. Register Your Business
Registration forms ask for the partnership’s legal name (distinguishable from other entities already on file in the state), a physical business address, the names of all general partners, and a statement of purpose. You’ll also designate a registered agent — someone physically located in the state and available during business hours to accept legal documents.2U.S. Small Business Administration. Register Your Business The agent can be a partner or a professional service.
Filing fees generally run between $50 and $500 depending on the state and entity type. Online filings often process within a few business days; paper filings mailed to the office can take several weeks. Many states offer expedited processing for an added fee, which matters if you need to sign a lease or contract before registration is finalized.
Set Up the Federal Tax Side
Partnerships don’t pay federal income tax at the entity level. The partnership files Form 1065, an informational return reporting total income, deductions, gains, and losses, and issues each partner a Schedule K-1 showing their share of those items.3Internal Revenue Service. Instructions for Form 1065 (2025) Each partner reports the K-1 figures on their personal return and pays tax at their individual rate. Profits are taxed once, not twice.
Form 1065 and the K-1s are due March 15 for calendar-year partnerships.3Internal Revenue Service. Instructions for Form 1065 (2025) Penalties for missing the deadline are assessed per partner per month, so the cost of filing late scales with the size of the partnership.
General partners pay self-employment tax on their distributive share of partnership income. The rate is 15.3 percent on the first $184,500 of net self-employment income in 2026, with the 2.9 percent Medicare portion continuing on income above that threshold.4Social Security Administration. Contribution and Benefit Base Limited partners pay self-employment tax only on guaranteed payments for services, not on their regular distributive share.5Internal Revenue Service. Entities 1 That distinction is one of the main tax advantages of being a limited partner.
Because no one is withholding taxes from a partner’s share, individual partners generally need to make quarterly estimated tax payments to the IRS if they expect to owe $1,000 or more at filing.6Internal Revenue Service. Estimated Taxes Missing or underpaying triggers a penalty. The tax bill doesn’t wait until April.
Once state registration is confirmed, apply for a federal Employer Identification Number through the IRS website. The nine-digit EIN is needed to open a business bank account, file returns, and hire employees. Online applications process immediately. Form the entity with the state first; the IRS may delay the EIN application otherwise.7Internal Revenue Service. Get an Employer Identification Number
Keep the Structure Intact
Registration isn’t a one-time event. Most states require LPs and LLPs to file annual or biennial reports, with fees typically between $50 and $500. Missing a report can bring late fees, loss of good standing, or administrative dissolution. Losing good standing can jeopardize the liability protection you formed the entity to get. Set a calendar reminder; due dates vary by state and are easy to miss.
Forming an LLP or LLLP creates a liability shield on paper, but courts can disregard it when the partnership doesn’t actually operate as a separate entity. The common failures: mixing personal and business finances in one account, failing to document major partnership decisions, letting the agreement go stale rather than updating it as the business changes, and treating partnership assets as personal property. Keep a clean separation between partnership and personal finances. Document significant decisions in writing. These habits are easy to maintain and extremely difficult to reconstruct after a creditor sues.