Form a partnership, filed right.
A partnership is two or more people in business together. We form the registered kinds that actually protect you: a Limited Partnership (LP) with general and limited partners, or a Limited Liability Partnership (LLP) that shields each partner from the others' malpractice. The default general partnership needs no filing, and that's exactly its danger. We file the LP or LLP your plan needs.
Right now, a handshake is your only paperwork.
You're going into business with a partner or two. Here's what most people don't realize: the moment you do, you already have a general partnership, formed automatically with no filing. And in a general partnership, each of you is personally on the hook for the whole business's debts, and for what the other partners do. Filing an LP or LLP replaces that exposure with real protection. You don't need to parse the partnership statutes. You need one clear path, and to pick the right structure before you sign anything.
The first decision, and it changes who's liable for what: GP, LP, or LLP?
GP, LP, or LLP: what actually changes.
All three are partnerships, taxed the same pass-through way, but they split liability very differently. A general partnership (GP) is the automatic default with no filing and no protection: every partner is fully liable. A limited partnership (LP) has general partners who run it and are liable, plus limited partners who invest and are shielded as long as they stay passive. A limited liability partnership (LLP) protects every partner from the business's debts and from a co-partner's malpractice, which is why professional firms use it. The right one depends on who's active, who's investing, and whether your work carries professional risk.
- You want liability protection while sharing ownership and pass-through taxes.
- You have passive investors plus an active manager: a limited partnership fits, common in real estate and funds.
- You're a professional firm where partners shouldn't answer for each other's malpractice: an LLP fits.
- You want a written framework for profit splits, decisions, and partner exits from day one.
- You want the simplest shield for every owner, active or not: an LLC.
- You plan to raise venture capital or grant stock: a corporation.
- You're a single owner: an LLC or sole proprietorship is simpler than a partnership.
- Weighing structures broadly? Our LLC vs. corporation breakdown helps.
The detail that catches partners off guard: a general partnership needs no paperwork to exist, so many partners never file anything, and only learn about unlimited, shared liability when something goes wrong. Even in an LP or LLP, a written partnership agreement is what actually governs profit splits, decision-making, and what happens when a partner leaves. Skipping it is how good partnerships turn into bad lawsuits. We file the entity and give you the agreement to build on.
Going with an LP or LLP? Settle two things first.
The two calls that stall founders: your name, and your cost.
Make both right here. No signup: spark a firm name and check it, and see what a partnership filing runs.
Find a name that fits.
Type a word or two, or your partners' names. We'll spark options for the firm, then you can check any favorite live against state and USPTO records.
LP and LLP names carry a required marker. Run a favorite through the live availability check, or open the full name generator.
What a partnership costs.
Our service fee is $149, whether you form an LP or an LLP. On top, you pay the state's filing fee, which varies by partnership type and state, passed through at cost with no markup.
See the exact filing fee for your state and partnership type on the pricing page.
Name picked, structure chosen. Now the handoff.
A clean handoff, in four steps.
You make four decisions. We file the LP or LLP and give you the agreement that governs the partnership.
Pick your type
LP for active-plus-passive ownership, LLP for a professional firm. BosAI helps you match the structure to who's running it and who's investing.
Confirm your name
We check it against the state register and the required LP or LLP marker, then reserve it if you're not filing the same day.
Set partners + roles
List your partners, who's general and who's limited, or all partners in an LLP, and appoint a registered agent, included year 1.
We file it
We submit your Certificate of Limited Partnership or Statement of Qualification for the LLP, then return the stamped approval.
Then the part you're actually waiting for.
The moment your handshake becomes a firm.
Delaware, Nevada, Wyoming, and Colorado typically approve the same day or the next. Most other states run a few business days. We file the moment your details check out, so nothing bounces back over an avoidable error.
Marsh & Vale Architects, LLP
Statement of Qualification filed with the Secretary of State. Every partner shielded from the others' liability. Specialist-reviewed before submission.
Three architects formed an LLP.
They wanted to share a practice without each being liable for the others' project mistakes. We filed the LLP, they signed a partnership agreement splitting profit and roles, got the EIN and a firm bank account, and took on their first joint commission, each protected from the others' risk.
Approval is the start, not the finish. Here's your first 30 days.
What to do once it's filed, in order.
These make the firm bankable and settle the things partners fight about later, before there's anything to fight over.
Get your EIN
A partnership needs its own EIN to bank, file, and issue each partner a K-1 at tax time. It's free from the IRS, and we file it the same day.
Sign a partnership agreement
This is the most important document you'll sign: how profit and losses split, who decides what, how a partner joins or leaves, and how disputes are settled. In a partnership, the agreement does the governing, and settling it while everyone's happy prevents most partnership breakups.
Open a firm bank account
Keep the partnership's money separate from every partner's personal funds. It preserves the liability protection an LP or LLP gives, and it makes the year-end split and each partner's K-1 far cleaner to prepare.
Add insurance, especially for a professional LLP
An LLP shields you from a co-partner's malpractice, not your own, so professional liability coverage still matters, and is often required to practice. For an LP, general liability protects the business the limited partners are counting on.
Track your annual report and partnership return
Most states want a periodic report or LLP renewal to keep the entity in good standing, and the partnership files its own federal return, issuing a K-1 to each partner. On BOI: as of 2026, U.S.-formed partnerships are exempt. A compliance calendar tracks it. See who has to file →
You can do these one by one. Or hand the whole sequence to one team.
File once, or stay protected year-round.
- LP or LLP filed with the state
- Specialist review
- Partnership Agreement template
- EIN walkthrough
- Everything in one-time
- Registered Agent year 1
- Annual report and LLP renewal autopilot
- 47-signal compliance monitoring
- Year-round protection, cancel anytime
State fees vary by partnership type and jurisdiction, passed through at cost. See full pricing →
And this is where most filing companies stop. We're just getting to the part that matters.
Your firm is now formed. Let's build everything that comes next.
Formation is one line in a much longer story. Every stage below already lives on one platform, so you're never starting over with a new provider.
Everything above happens inside File.Business: one platform, from your first partner to the day you wind the firm down or pass it on. It's where you form your partnership, and where you run the whole firm.
The questions partners ask right before they file.
GP, LP, or LLP: what's the difference?
A general partnership (GP) forms automatically when two or more people do business together, with no filing and no liability protection: every partner is fully on the hook. A limited partnership (LP) has general partners who manage and are liable, plus limited partners who invest and are shielded as long as they stay passive; it's common in real estate and funds. A limited liability partnership (LLP) protects every partner from the business's debts and from a co-partner's malpractice, which is why law and accounting firms use it. All three are taxed the same pass-through way; they differ on who bears the risk.
Partnership or LLC: which should we choose?
An LLC is often the simpler choice for a small group: it gives every owner liability protection, pass-through taxes, and flexible management with less structure than an LP. A partnership makes sense when you specifically want the LP's split of active and passive owners, or the LLP that certain professions and states favor, or when your profession is steered toward an LLP. If you're unsure, an LLC covers most two-or-three-person businesses well; we'll tell you when an LP or LLP genuinely fits your situation better.
Do we really need a written partnership agreement?
Yes, more than almost any other document. Without one, your state's default partnership rules decide how profit splits, who can bind the business, and what happens when a partner leaves, and those defaults are rarely what you'd choose. A written partnership agreement settles profit and loss allocation, decision-making, contributions, and buyout terms while everyone is still aligned. The vast majority of partnership disputes trace back to something the agreement should have covered. We give you a template to start from at formation.
How is a partnership taxed?
Partnerships are pass-through by default: the partnership itself pays no income tax, but it files an informational return and issues each partner a Schedule K-1 reporting their share of profit or loss, which they report on their personal returns. Partners generally pay self-employment tax on their share of active income. It's similar to a multi-member LLC's default treatment. Because the allocations and each partner's basis can get involved, this is an area worth a CPA's review; we form the entity and keep your records clean, and point you to a tax professional for the return.
Is an LLP only for licensed professionals?
Often, yes. Many states limit the LLP to specific licensed professions, such as law, accounting, architecture, or medicine, and some require the partners to carry professional liability insurance. Other states allow any business to form an LLP. Where your profession or state doesn't permit an LLP, the usual alternatives are an LLC or a PLLC for licensed work. We confirm whether your state and profession allow an LLP before filing, so you don't pick a structure that isn't available to you.
Can a limited partnership have just one general partner?
Yes, and that's the classic structure: one general partner who manages and bears the liability, with one or more limited partners who invest and stay passive. The catch is that the general partner has unlimited liability, which is why many LPs use an LLC or a corporation as the general partner, so no individual is fully exposed. It's a common, powerful setup for funds and real estate. Tell us how you want management and liability arranged, and we'll structure the general-partner role to protect the people running it.
Can we convert a partnership to an LLC later?
Usually, yes. As a business grows, many partnerships convert to an LLC or a corporation for broader liability protection or to bring on investors, and most states have a process for it, though the tax treatment of the conversion needs care. It's cleaner to start with the structure you'll want if you already know, but converting later is a normal step and not a do-over. We can handle the conversion filing and coordinate the timing when you're ready to make the move.
Can a non-US resident be a partner in a US partnership?
Yes. Non-residents can be partners in a US LP or LLP; you don't need to be a citizen or resident to hold a partnership interest. The partnership will need a US EIN, which we obtain from the IRS without an SSN, and there are withholding and reporting rules that apply when a partnership has foreign partners, so the tax side needs a professional's attention. We form the entity and set up the basics; for the cross-border tax specifics, we'll point you to a CPA who handles them.