CompanySage Editorial Team · August 15, 2026 · 6 min read
If you're asking whether you legally need an LLC to start a business, the honest answer is no. Every state lets you begin operating as a sole proprietorship (or a general partnership if you have a co-owner) without filing any formation paperwork at all. You can invoice clients, sell products, and collect payment the same day you decide to start, with no state filing required.
That's the legal reality, and it's why so many businesses start informally. But "not required" and "not a good idea" are two different questions. A sole proprietorship is the default you fall into if you do nothing, not necessarily the structure you'd choose once you understand what it exposes you to.
The core difference between operating without an entity and forming an LLC comes down to one thing: whether your personal assets are legally separate from your business's debts and liabilities.
| Sole Proprietorship | LLC | |
|---|---|---|
| Setup required | None — you're automatically one the moment you do business | State filing (Articles of Organization) plus a fee |
| Personal liability | Unlimited — your personal assets can be pursued for business debts or lawsuits | Generally limited to what you've invested in the business |
| Cost to start | $0 in most cases | State filing fee (typically $35–$500), plus a formation service if you use one |
| Ongoing paperwork | Minimal, no annual state filing in most cases | Annual or biennial report in most states, plus a registered agent |
| Credibility with banks/clients | Lower — no formal entity to point to | Higher — a registered business entity with its own name and standing |
| Taxes | Pass-through to your personal return by default | Pass-through by default for a single-member LLC, with flexibility to elect corporate taxation later |
Nothing here is inherently right or wrong. A sole proprietorship is the simpler, cheaper option, and for a low-risk side project that might be exactly right. An LLC trades some simplicity for a legal wall between your business and your personal finances.
There's no single revenue number or age of business that flips the switch. Instead, watch for these signals that your liability exposure has outgrown an informal structure:
If two or three of those describe your business right now, that's usually a sign an LLC is worth the filing fee. If none of them do yet, it's reasonable to wait.
It's also honest to say that forming an LLC on day one isn't always the right call. If you're testing an idea with no clients yet, no contracts, no employees, and minimal money at stake, operating informally for a few weeks or months while you validate the business can be a reasonable way to avoid paying a filing fee for a business that might not stick.
The tradeoff while you wait
Every day you operate without an LLC, you're personally exposed to whatever the business does. That risk might be small for a pre-revenue side project, but it doesn't disappear, it's just a bet you're making. Once you have a client, a contract, or real money moving, that bet gets more expensive to lose.
For a deeper look at what an LLC actually is and how it compares to other entity types, see what is an LLC.
Every state charges a filing fee for Articles of Organization (sometimes called a Certificate of Formation), typically ranging from about $35 to $500 depending on the state, and most states also charge a smaller ongoing annual or biennial report fee to keep the LLC in good standing.
On top of the state fee, you have two paths: file the paperwork yourself directly with your state, or use a formation service that handles the filing, registered agent, and operating agreement for you.
CompanySage's formation packages start at $99 plus state fees, and compliance plans start at $14.99/month, with no hidden fees. If cost is the deciding factor for you, cheapest LLC formation breaks down how to keep the total cost down.
Attorney review of your formation documents is available as an add-on for an additional fee if you want that extra layer, but it isn't required to form or maintain a basic LLC.
Once the signs above point toward forming an LLC, the process itself is straightforward: choose your state (usually wherever you actually operate), pick and check your business name, appoint a registered agent, file your Articles of Organization with the state, put together an operating agreement, and get an EIN from the IRS.
For a full state-by-state walkthrough of each step, see how to form an LLC. If you're the only owner, also check single-member LLC for what changes (and what doesn't) when there's just one of you. And even a single-member LLC benefits from a written operating agreement that documents how the business runs and reinforces the separation between you and the company.
CompanySage bundles the filing, registered agent, and operating agreement into one flow, with 24-hour filing at no extra cost. See pricing for the full breakdown of packages and what's included.
You don't need an LLC to start a business, and no state will stop you from operating without one. But "legally optional" isn't the same as "risk-free." Once you're signing contracts, hiring people, selling a real product, or bringing in consistent revenue, the personal liability protection an LLC provides is usually worth the filing fee. Until then, it's a reasonable choice to wait, as long as you understand exactly what you're exposed to while you do.
No. In every state, you can start operating as a sole proprietorship (or a general partnership with a co-owner) without filing anything or forming a formal entity. An LLC is a choice you make for liability protection and structure, not a legal prerequisite for doing business.
Liability protection. As a sole proprietor, there's no legal separation between you and your business, so a lawsuit, a business debt, or a client dispute can reach your personal savings, car, or home. An LLC creates that separation so your personal assets are generally shielded from business liabilities.
State filing fees for Articles of Organization typically range from about $35 to $500 depending on the state, plus an ongoing annual or biennial report fee in most states. On top of the state fee, CompanySage's formation packages start at $99 plus state fees, and compliance plans start at $14.99/month.
Yes, and many owners do exactly that — starting as a sole proprietorship to test an idea, then converting to an LLC once there's real revenue, a contract, an employee, or meaningful liability exposure. The tradeoff is that you're personally exposed the whole time you wait, and converting later means redoing contracts, bank accounts, and licenses in the LLC's name.
No. You can file the paperwork yourself directly with your state, or use a formation service to handle the filing, registered agent, and operating agreement for you. Attorney support is available as an add-on for an additional fee if you want a professional to review your documents or answer questions, but it isn't required to form or maintain a basic single-member LLC.
Often, yes. A single-member LLC gets you the same liability separation as a multi-member LLC, and by default the IRS taxes it like a sole proprietorship (pass-through, no separate business return), so you get the legal protection without extra tax complexity. See our single-member LLC guide for the specifics.
As a sole proprietor, you're personally responsible for the business's debts and any judgment against it, which means a creditor or plaintiff can generally pursue your personal bank accounts, property, and other assets, not just what's in the business. That risk is the main thing an LLC is designed to prevent.
Related guides from the CompanySage library.
When you decide an LLC is the right move, CompanySage handles your state filing, registered agent, and operating agreement in one flow, with 24-hour filing at no extra cost and no hidden fees.
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