A limited partnership is a business where some owners have unlimited liability (general partners) and some have capped liability (limited partners). That split is what makes it different from an LLC.
It is an older structure than the LLC, and it is still the standard vehicle in a few industries: venture capital funds, real estate investment, hedge funds. It is common enough that you might inherit one, be brought into one, or choose it instead of an LLC.
Most people starting a business today pick an LLC instead. A limited partnership is more complicated, needs at least two people in two different roles, and carries one condition that catches people: a limited partner who takes part in running the business can lose the liability cap. That condition is called the control rule, and it is where most of the real risk sits.
What the law requires
A limited partnership has to have at least one general partner and at least one limited partner. Each role is different:
- General partner (GP): makes decisions, manages day-to-day operations, and carries unlimited personal liability for the partnership's debts and legal obligations.
- Limited partner (LP): contributes capital, receives a share of profits, and is not personally liable for partnership obligations beyond what they put in. This is the "limited" part.
The GP is essential. You cannot have a limited partnership without one. A business with only general partners is a general partnership, and no one in it has limited liability.
To form one, you have to file with the state. This is different from a general partnership, which can exist without any paperwork. Every state requires a formation document, and the name is largely standard. Delaware calls it a Certificate of Limited Partnership (6 Del. C. § 17-201). California calls it the same thing (Corporations Code § 15902.01, filed on Form LP-1). Wyoming calls it the same thing (W.S. § 17-14-301). The details each state asks for differ.
Why states require a written certificate
When you file the certificate, you are making a public statement: this person is a general partner with unlimited liability, and these people are limited partners whose liability is capped. The state records it. Creditors, suppliers, and anyone suing the business can look it up and see who is responsible for what.
That is why you cannot simply call yourself a limited partnership. Without the filing there is no limited partnership. What you have instead is a general partnership, where every partner carries unlimited personal liability.
The control rule
Here is the condition attached to the liability cap. In broad terms: a limited partner keeps the cap unless they participate in control of the business.
The logic is straightforward. You put in $50,000, take a share of profits, and stay out of the way. You do not make decisions, negotiate contracts, or hire and fire. Because you have no control, you are not on the hook for what the general partners do.
So what happens if you sit in on management meetings, advise the general partners, or weigh in on hiring? Does that cost you the cap?
The answer in both Delaware and California has two layers, and they are close to identical. Each state (1) lists a long set of activities that do not count as participating in control, and (2) limits any resulting liability to third parties who actually dealt with the partnership thinking you were a general partner. Neither state gives a limited partner an unconditional shield, and neither state strips it automatically.
Delaware: 6 Del. C. § 17-303
Subsection (a) states the rule directly:
"A limited partner is not liable for the obligations of a limited partnership unless he or she is also a general partner or, in addition to the exercise of the rights and powers of a limited partner, he or she participates in the control of the business."
And it caps the exposure that follows. A limited partner who does participate in control "is liable only to persons who transact business with the limited partnership reasonably believing, based upon the limited partner's conduct, that the limited partner is a general partner."
Subsection (b) then lists activities that do not count as participating in control. Among them: working as an independent contractor or agent for the partnership, consulting with and advising a general partner, acting as a surety or guarantor, attending partner meetings, serving on a committee, bringing a derivative action, and voting on matters such as dissolution, sale of assets, incurring debt, admitting or removing a partner, amendments, and mergers.
California: Corporations Code § 15903.03
Subsection (a) states nearly the same rule:
"A limited partner is not liable for any obligation of a limited partnership unless named as a general partner in the certificate or, in addition to exercising the rights and powers of a limited partner, the limited partner participates in the control of the business."
California adds one element that Delaware does not. A limited partner who participates in control "may be held liable as a general partner only to persons who transact business with the limited partnership with actual knowledge of that partner's participation in control and with a reasonable belief, based upon the limited partner's conduct, that the partner is a general partner at the time of the transaction."
California also has its own safe-harbor list in subsection (b), covering much of the same ground as Delaware's: acting as an employee or contractor, serving as an officer of a corporate general partner, consulting and advising, acting as surety, approving amendments, voting, winding up, serving on an audit committee, and bringing derivative actions.
What actually differs
Less than you would expect. Both states keep the control rule, both publish a safe-harbor list, and both require the third party to have believed you were a general partner. The one real gap is California's extra requirement that the third party have actual knowledge of your participation in control. That is a further element for the person suing you to prove, so on the statutory text California's test is, if anything, harder to satisfy than Delaware's.
The practical takeaway is not "pick Delaware to be safe." It is: in either state, staying inside the safe-harbor list is what protects you, and letting an outside party believe you are the one in charge is what puts you at risk.
🇺🇸 If the IRS counts you as a U.S. person
You can form a limited partnership in any state. If you form it as a general partner, you have unlimited liability whatever state you choose. That is the trade-off for control. If you come in as a limited partner, read the safe-harbor list in that state's statute before you start advising, attending, or approving anything.
The LP structure does not change how the business files. The partnership files Form 1065 (U.S. Return of Partnership Income). Per the IRS, a partnership "must file an annual information return to report the income, deductions, gains, losses, etc., from its operations, but it does not pay income tax." It passes profits and losses through to the partners. Each partner gets a Schedule K-1 (Form 1065) and reports their share on their own return.
You can be a general partner or a limited partner. You can also be both at once: under 6 Del. C. § 17-404 a general partner may also make contributions and share in profits as a limited partner. A person in both roles has the liabilities of a general partner, plus the rights of a limited partner to the extent of the limited partner stake.
🌏 If it does not
You can form a limited partnership in any state, and being a non-resident does not stop you. You can be the sole limited partner or one of many. You do not need to live in the state where the partnership is registered.
The control rule applies to you the same way. Delaware and California do not ask where you live. They ask what you did and what the other side believed.
The tax side is where non-residents differ, and it is not the filing. The partnership still files Form 1065 and still issues you a Schedule K-1. The difference is withholding: under IRC section 1446, a partnership with effectively connected taxable income allocable to a foreign partner must pay a withholding tax on that income. The IRS sets the rate at 37% for non-corporate foreign partners and 21% for corporate foreign partners. The partnership remits with Form 8813, reports annually on Form 8804, and issues you a Form 8805 showing what was withheld on your behalf. That amount is credited against your own U.S. tax liability.
That withholding is the practical reason a foreign limited partner cannot treat a U.S. LP as a passive offshore wrapper. Money is taken out at the partnership level before it reaches you.
General partner vs. limited partner: what you can and cannot do
| What | General Partner | Limited Partner |
|---|---|---|
| Make day-to-day decisions | Yes | Not without control-rule risk |
| Sign contracts on behalf of the partnership | Yes | Not without control-rule risk |
| Manage the business | Yes, required | Not barred by statute, but this is what triggers the control rule |
| Vote on major decisions (amend agreement, dissolve, sell assets) | Yes | Yes, and both DE and CA list this as a safe harbor |
| Consult with and advise the general partner | Yes | Yes, listed as a safe harbor in both states |
| See financial records | Yes | Yes, a statutory right |
| Contribute capital | Permitted | Yes, this is the role |
| Receive a share of profits | Yes | Yes |
| Personal liability for partnership debts | Unlimited | Capped, unless the control rule is triggered |
The last row is the one that matters. Note that the third row is a common misreading: no statute forbids a limited partner from managing. Managing is simply what exposes you, and only to someone who dealt with the partnership believing you were a general partner.
Common mistakes
🇺🇸 If the IRS counts you as a U.S. person
- Assuming Delaware makes a limited partner untouchable. It does not. 6 Del. C. § 17-303(a) keeps the control rule; the protection comes from the safe-harbor list in subsection (b), not from the choice of state.
- Drifting into management one favor at a time. Nothing announces the moment you cross the line, and the test looks at your conduct as an outsider saw it.
- Letting the partnership agreement go stale. The agreement sets what limited partners may do. If day-to-day reality has moved past it, the document no longer describes what you were authorized to do.
🌏 If it does not
- Assuming that not being a U.S. resident means the control rule does not reach you. Delaware and California do not ask your address. They ask what you did.
- Ignoring section 1446. A foreign limited partner's share of effectively connected income is withheld on at the partnership level, whether or not any cash is distributed to you.
- Treating "I only invested money" as the end of the analysis. If you get drawn into control, informally or by giving direction, the control rule is live.
FAQ
What is the difference between a limited partnership and an LLC?
Both let owners cap their liability. The difference is structure. An LLC is flat: members generally have the same liability protection whether or not they manage. A limited partnership has two tiers: general partners with control and unlimited liability, limited partners with capped liability and a control rule attached. If you want everyone on the same footing, use an LLC. If you want passive investors who take no part in running the business, the LP was built for that.
Can I be a general partner and a limited partner at the same time?
Yes. Delaware says so directly: under 6 Del. C. § 17-404, "a general partner also may make contributions to and share in profits, losses and distributions as a limited partner." A person in both roles carries the liabilities of a general partner and also holds the rights of a limited partner to the extent of that stake. Being a limited partner too does not shield you from general partner liability. That is why the common structure is different: a separate entity serves as the general partner, and you hold your economic stake personally as a limited partner. That takes two entities.
Can I convert my limited partnership to an LLC?
Sometimes, but the mechanism depends entirely on the state, and it has tax consequences. We did not verify the conversion statutes of any specific state for this entry, so do not take a route from this page. Ask a tax professional before you move anything.
What happens to my liability protection if I act like a general partner?
You can be held liable as a general partner, but only to a third party who transacted with the partnership believing, based on your conduct, that you were one. In California that person must also have had actual knowledge that you were participating in control. In neither state does the liability run to the world at large. It runs to the people you gave the wrong impression to.
Does a foreign national have to be a general partner, or can they be a limited partner?
A foreign national can be a limited partner. There is no citizenship or residency requirement for either role. The control rule applies the same way, and section 1446 withholding applies to your share of effectively connected income.
How is a limited partnership taxed?
The partnership files Form 1065 and does not pay income tax itself. Each partner receives a Schedule K-1 (Form 1065) and pays tax on their allocated share. The allocation is set by the partnership agreement, not by whether you are a GP or an LP. If you are a foreign partner, the partnership withholds under section 1446 on effectively connected income allocable to you, and reports it to you on Form 8805.
Can an LP have just one partner?
No. Delaware defines a limited partnership as "a partnership formed under the laws of the State of Delaware consisting of 2 or more persons and having 1 or more general partners and 1 or more limited partners" (6 Del. C. § 17-101). One person can hold both roles, but you still need at least two persons. For a single-owner business with a liability shield, use an LLC or a corporation.
What does the partnership agreement do?
Note the name: an LP is governed by a partnership agreement, not an operating agreement. That term belongs to LLCs. Delaware defines it as "any agreement, written, oral or implied, of the partners as to the affairs of a limited partnership and the conduct of its business" (6 Del. C. § 17-101). It sets what each partner may do: which decisions limited partners vote on, what records they can see, what they may not sign. If a limited partner acts outside those boundaries, the agreement is the document a court reads to decide whether they were authorized.