Quick Take
An LLP (Limited Liability Partnership) is a business structure for licensed professionals — think lawyers, accountants, architects, or doctors — who want to go into business with one or more partners while protecting themselves from liability for their partners’ mistakes. It’s simpler than it sounds: you’re basically getting the liability protection of an LLC, structured specifically for partnerships in licensed professions. If you’re asking “what is an LLP” because you and a colleague are opening a practice together, you’re in the right place, and this is very achievable to set up yourself.
What This Actually Means (In Plain English)
Picture two friends who are both CPAs, and they decide to open a firm together. If they just start working together with a handshake, they’re technically a general partnership — which means each partner is personally on the hook for the business’s debts and for each other’s professional mistakes. If your partner gets sued for malpractice, your house and savings could be at risk too, even though you had nothing to do with the case.
An LLP fixes that. It’s a partnership structure where each partner is shielded from personal liability for the other partners’ negligence or misconduct. You’re still liable for your own mistakes (that’s what malpractice insurance is for), but you’re not automatically on the hook for your business partner’s.
Who this is best for:
- Law firms. Two or more attorneys opening a practice together almost always structure as an LLP (or in some states, an LLC or PC, depending on state bar rules).
- Accounting firms. CPAs frequently choose LLPs — it’s actually the traditional structure for large accounting firms.
- Medical, dental, and architecture practices where state law permits it and requires professional licensing for each partner.
- Multi-partner professional service firms — consulting groups, engineering firms, and similar practices where partners want protection from each other’s professional liability.
If you’re picturing “my friend and I are starting a landscaping business” or “my co-founder and I are launching a software startup,” an LLP is not the right fit — keep reading to see why.
Common myths, debunked:
- “An LLP protects me from all business debt.” Not quite. It protects you from your partners’ malpractice and negligence, but you can still be personally liable for business debts you personally guaranteed, and in many states, for the partnership’s general business debts depending on how the partnership is structured.
- “Any business with partners can form an LLP.” In most states, LLPs are restricted to licensed professions — law, accounting, medicine, architecture, engineering. If you’re not in a licensed profession, most states won’t let you register as an LLP.
- “LLP and LLC are basically the same thing.” They’re cousins, not twins. An LLC works for almost any business type and any number of owners (called members). An LLP is specifically built for partnerships of licensed professionals, and the liability rules work a little differently between them.
When this does NOT apply to you:
- You’re a solo operator. You can’t have a “partnership” of one person — look into a sole proprietorship or single-member LLC instead.
- You’re not in a licensed profession. Most states limit LLPs to law, accounting, medicine, architecture, and similar licensed fields. A general business (retail, e-commerce, marketing agency, restaurant) should look at an LLC instead.
- You’re raising venture capital or planning to issue stock. Investors want a corporation, specifically a C-Corp, not a partnership structure.
- You want maximum liability protection with the fewest strings attached. An LLC often gives non-professional-service businesses cleaner, broader protection with less state-specific complexity.
Why It Matters for Your Business
What it actually protects. In an LLP, you’re shielded from personal liability if your business partner commits malpractice, gets sued for negligence, or otherwise creates legal liability through their professional conduct. Your personal assets — house, car, personal savings — generally stay out of reach in a lawsuit against your partner’s actions.
What it doesn’t protect. You’re still fully liable for your own professional negligence — an LLP doesn’t replace malpractice insurance, it works alongside it. You can also still be liable for business debts you personally guaranteed (like a lease or loan you co-signed), and rules vary by state on how much liability protection extends to general business debts versus just malpractice claims. This is genuinely one of the more state-specific structures out there, so check your state’s partnership statute before assuming full protection.
Tax implications. LLPs use pass-through taxation — the business itself doesn’t pay federal income tax. Profits and losses “pass through” to each partner’s personal tax return based on their ownership percentage, and each partner pays self-employment tax on their share. There’s no S-Corp-style tax election available to an LLP the way there is with an LLC, so if you’re hoping to reduce self-employment tax through an S-Corp election, you’d need to look at other structures (talk to a CPA — this is genuinely worth professional advice).
Credibility. Clients, especially in law and accounting, expect to see “LLP” after a firm name — it signals an established, properly structured practice rather than a loose partnership. Banks and vendors also tend to extend more favorable terms to a formally registered LLP than to an informal partnership.
What happens if you skip this step. If you and your professional partners just start working together without registering an LLP, you’re a general partnership by default — even if you never intended to be. That means full personal liability for each other’s actions, no liability shield at all, and often messy disputes down the road if there’s no written partnership agreement defining who owns what.
How to Do It — Step by Step
Before you start, have this ready:
- A business name (check it’s available with your state and doesn’t infringe an existing trademark)
- Names and license numbers for each partner (most states require all partners to hold the relevant professional license)
- A registered agent (the person or company that receives legal documents on your business’s behalf)
- A partnership agreement drafted or at least outlined — this is your internal contract covering profit splits, decision-making, and what happens if someone leaves
1. Confirm your state allows LLPs for your profession.
Not every state permits LLPs for every licensed profession — some restrict it to law and accounting only. Check with your state’s Secretary of State or professional licensing board first. (A few minutes to check online, but worth doing before anything else.)
2. Choose and reserve your business name.
Your name typically must include “LLP” or “Limited Liability Partnership” and must be distinguishable from existing registered businesses in your state. Most Secretary of State websites have a free business name search tool. (15–30 minutes.)
3. Appoint a registered agent.
Every state requires an LLP to have a registered agent with a physical address in the state of formation. You can serve as your own agent if you have a physical address and are reliably available during business hours, or use a registered agent service. (A few minutes if using a service; ongoing responsibility if doing it yourself.)
4. File your Certificate of Limited Liability Partnership (or equivalent).
This is the document that officially creates your LLP with the state — some states call it a Statement of Qualification or Certificate of Registration. You’ll list the business name, address, registered agent, and partner information. (Filing itself takes 20–40 minutes online; state processing typically takes anywhere from same-day to a few weeks depending on the state.)
5. Draft your partnership agreement.
This isn’t usually filed with the state, but it’s the single most important internal document — it spells out ownership percentages, profit distribution, how decisions get made, and what happens if a partner leaves, dies, or wants out. Skipping this is the single biggest mistake professional partnerships make.
6. Get an EIN from the IRS.
Your EIN (Employer Identification Number) is your business’s tax ID — you’ll need it to open a business bank account, hire employees, and file taxes. It’s free directly through the IRS website and takes about 10 minutes, with your EIN issued immediately online.
7. Handle state-specific professional requirements.
Many states require LLPs in licensed professions to carry a minimum amount of malpractice/liability insurance and to file proof of that insurance with the state. Check this requirement before you consider yourself done.
8. Open a business bank account and get your compliance calendar going.
Once you have your Certificate and EIN, open a dedicated business account — never mix personal and business funds. Also note your state’s annual report deadline (many states require LLPs to file one yearly to stay in good standing) so you don’t get hit with a lapse or late fee.
What approval looks like: you’ll receive a stamped, state-approved Certificate of Limited Liability Partnership (sometimes called a Statement of Qualification), which is your proof the LLP legally exists — keep it somewhere safe, you’ll need it for banking and licensing.
Common snags: name conflicts with existing businesses (have a backup name ready), missing professional license documentation, and forgetting the malpractice insurance requirement some states impose before they’ll finalize registration.
What It Costs (Honest Breakdown)
State filing fees for an LLP vary widely by state — expect a range similar to LLC filing fees in most states, though a handful of states charge significantly more for LLPs than LLCs. Always check your current state fee on the Secretary of State’s website, since these change.
Formation services like TrustedLegal.com typically charge a flat service fee on top of the state fee, and that usually includes name availability checking, document preparation and filing, and EIN registration. It’s a reasonable middle ground between DIY and hiring an attorney for a full setup.
Hidden costs to watch for:
- Registered agent renewal fees — if you use a service, this is usually an annual cost.
- Annual report fees, required in most states to keep your LLP in good standing.
- Malpractice/liability insurance premiums, often mandatory for LLPs in licensed professions.
- Franchise taxes in some states, charged annually regardless of income.
DIY vs. service vs. attorney:
| Approach | Best for | Tradeoff |
|---|---|---|
| DIY filing | Simple two-partner firms, comfortable with paperwork | Cheapest, but you’re on your own if something’s wrong |
| Formation service | Most first-time LLPs | Affordable, fast, includes EIN and registered agent — but doesn’t draft your partnership agreement |
| Attorney | Firms with complex ownership splits, multiple partners, or high liability exposure | Highest cost, but essential for a solid partnership agreement and profession-specific compliance |
Bottom line: most two- or three-partner professional firms spend a modest amount to get the LLP itself filed and registered, but the partnership agreement is where it’s worth investing in real legal help — that document is what actually protects you from partner disputes down the road.
Mistakes That Cost People Money
1. Skipping the partnership agreement. The #1 first-timer mistake. Verbal understandings fall apart when money or a partner’s exit is on the table — get it in writing before you need it.
2. Not confirming your state allows LLPs for your profession. Some founders file, then discover mid-process their profession isn’t eligible in their state, wasting the filing fee.
3. Forgetting the malpractice insurance requirement. Several states won’t consider your LLP registration complete without proof of coverage — check this before you file, not after.
4. Letting the annual report lapse. Missing this deadline can put your LLP in bad standing or even trigger administrative dissolution, which is a headache and cost to reverse.
5. Assuming LLP protection covers business debts you personally guaranteed. If you sign a personal guarantee on a lease or loan, the LLP structure doesn’t shield you from that specific obligation.
6. Mixing personal and business finances. Using one bank account for both muddies your liability protection and makes tax time miserable — open a dedicated business account from day one.
FAQ
Is an LLP the same as an LLC?
No. An LLC works for nearly any business type and any number of owners, while an LLP is specifically for partnerships of licensed professionals like lawyers and accountants. The liability rules and formation requirements differ by state, so don’t assume they’re interchangeable.
Can a single person form an LLP?
No — an LLP requires at least two partners by definition. If you’re solo, look at a sole proprietorship, single-member LLC, or professional LLC (PLLC) depending on your state and profession.
Do all partners need to be licensed professionals?
In most states, yes — every partner in an LLP typically must hold the relevant professional license (law, accounting, etc.). Check your state’s specific rules, since a few allow limited exceptions for non-licensed administrative partners.
Does an LLP protect me from my own malpractice?
No. An LLP protects you from liability for your partners’ negligence, not your own — you still need malpractice insurance for claims against your own work.
How is an LLP taxed?
LLPs use pass-through taxation, meaning profits pass to each partner’s personal tax return and each partner pays self-employment tax on their share. There’s no S-Corp-style election available for an LLP the way there is for an LLC, so talk to a CPA if reducing self-employment tax is a priority.
What happens if a partner leaves the LLP?
This should be spelled out in your partnership agreement — including how their share is bought out and whether the LLP continues or dissolves. Without a written agreement, state default partnership law governs, which rarely matches what the remaining partners actually want.
Can an LLP convert to an LLC later?
In some states, yes, through a formal conversion filing, but it’s not universal and often triggers new tax and licensing considerations. Talk to an attorney before assuming a smooth conversion is available in your state.
Conclusion
An LLP is one of the more specific business structures out there — but if you’re a licensed professional going into partnership with colleagues, it’s exactly the protection you need, and it’s genuinely manageable to set up once you know the steps. The real work isn’t the state filing; it’s getting your partnership agreement right and staying on top of your state’s ongoing requirements.
That’s where TrustedLegal.com comes in. We’ve helped thousands of entrepreneurs form LLCs, corporations, and nonprofits across all 50 states, and we handle the paperwork so you can focus on building your practice — state filing, EIN registration, registered agent service, and ongoing compliance, all with transparent pricing and real support when you have questions. Get started today and let’s get your LLP filed correctly the first time.
