Before you read on: this guide is general information, not legal or tax advice. Formation rules, filing fees, and annual requirements vary a lot by state — California's LLC franchise tax alone is $800/year, while Missouri charges nothing annually. Check your own state's requirements, and talk to an accountant or attorney if real money or real risk is on the line.
Here is the whole decision in one sentence: the moment you sell something as an individual, you're already a sole proprietor — it's the free, automatic default — while an LLC is something you pay your state to create because it puts a legal wall between your business's debts and your personal assets. Everything else on this page is detail on when that wall is worth paying for.
The good news is that this is rarely a permanent choice. Thousands of businesses start as sole proprietorships and convert to LLCs once they have revenue, contracts, or risk worth protecting — the conversion is routine paperwork, not a legal ordeal (we cover the exact steps below). So don't let this decision stall your launch. If you're still working through the bigger picture, our full guide on how to start a business shows where this step fits in the 10-step path from idea to first sale.
The side-by-side comparison
Both structures are "pass-through" for taxes by default, both can hire employees, and both can open a business bank account. The real differences are liability, cost, and paperwork.
| Factor | Sole proprietorship | LLC |
|---|---|---|
| Personal liability | None separated. You and the business are legally the same person — business debts and lawsuits can reach your savings, car, and home. | Limited. Properly run, the LLC's debts belong to the LLC. Your personal assets are generally shielded (with real exceptions — see below). |
| Taxes | Pass-through. Profit lands on your personal return (Schedule C) and you pay income tax plus ~15.3% self-employment tax on net profit. | Same pass-through treatment by default — an LLC changes nothing about your taxes on day one. But it adds elective options, like an S-corp election that can trim self-employment tax once profits are roughly $60k–$80k+ and you can pay yourself a reasonable salary. |
| Cost to start | ~$0. If you operate under a trade name, a DBA filing typically runs ~$10–$100 depending on the county or state. | ~$35–$500 state filing fee (Montana is near the bottom, Massachusetts near the top; most states fall in the $50–$200 range), plus possible annual report fees or franchise taxes. |
| Ongoing paperwork | Minimal. Track income and expenses, file Schedule C, pay quarterly estimated taxes. That's largely it. | Light but real: annual or biennial reports in most states ($0–$300), a registered agent, and the discipline of keeping business and personal money strictly separate. |
| Credibility with clients & lenders | Fine for most consumer-facing work, but some corporate clients and landlords won't contract with unregistered individuals. | Higher. "Yourname LLC" on a contract, invoice, or loan application signals a real, registered entity — and some lenders and grant programs require one. |
| Hiring employees | Allowed. You'll need an EIN and payroll setup, but every employer obligation lands on you personally. | Allowed, and safer — employment-related claims are generally claims against the LLC, not against you personally. |
| Business bank account | Optional but smart. Banks typically ask for your SSN or EIN plus a DBA certificate if you use a trade name. | Effectively required. Banks ask for your articles of organization and EIN — and keeping a separate account is what makes the liability shield hold up. |
When a sole proprietorship makes sense
The default structure exists for a reason: most brand-new businesses don't yet have anything an LLC would protect. A sole proprietorship is usually the right call when:
- You're still testing the idea. If you don't yet know whether anyone will pay you, spending $150 and a week of paperwork on an entity is premature. Validate first — make the first few sales, then formalize. A one-page business plan is a better use of that first week than state filings.
- The work is genuinely low-risk. Freelance writing, online tutoring, virtual assistance, design work, selling digital products — services where the worst realistic outcome is an unhappy client and a refund, not an injury or a six-figure claim.
- It's a side project under meaningful revenue. If you're earning a few hundred dollars a month from one of the side hustles people run alongside a day job, the cost and annual upkeep of an LLC often exceeds any practical benefit. Many side hustlers reasonably wait until they're clearing roughly $1,000–$2,000 a month — or signing their first real contract — before forming an entity.
- You want zero friction. No filings, no annual reports, no registered agent. You report profit on Schedule C with your personal taxes and get on with finding customers.
One caveat even at this stage: open a separate checking account anyway. Clean books make tax time painless and make the eventual LLC conversion trivial.
When an LLC makes sense
An LLC earns its fee the moment your business could plausibly cost you more than you'd willingly pay out of pocket. Concretely, that tends to happen when:
- People or property are physically involved. Clients visit your home studio, you work inside customers' houses (cleaning, handyman work, pet sitting, mobile detailing), or you sell physical products that could injure someone. One slip-and-fall or defect claim can exceed years of profit — this is the classic LLC trigger, and it applies to a surprising number of home-based businesses.
- You're signing real contracts. Leases, vendor agreements, client retainers, equipment financing. Signing as "Acme Services LLC" instead of yourself means a contract dispute is, generally, the LLC's problem.
- You have a partner. Two people in business together without an entity are a general partnership by default — meaning each of you is personally liable for the other's business decisions. A multi-member LLC with an operating agreement fixes that and forces the awkward "what if we split?" conversation early, when it's cheap.
- Revenue is meaningful. Once the business clears tens of thousands a year, the $100–$300 annual cost of maintaining an LLC is noise, and the optional S-corp election starts to matter at higher profit levels.
- A landlord, lender, or client requires it. Commercial landlords often lease only to entities, and many lenders and programs covered in our small business funding guide — including some microloans and grants — expect a registered business with its own EIN and bank account before they'll look at your application.
A practical note on names: your LLC's legal name must be unique in your state, so check the Secretary of State's database before you fall in love with one. Our business name guide covers how to pick something that clears the state registry, the trademark database, and the domain search all at once.
What an LLC does not do
LLC formation services have spent years overselling this entity, so it's worth being blunt about the limits:
It doesn't save you taxes by default
A single-member LLC is a "disregarded entity" to the IRS — your tax return looks exactly the same as a sole proprietor's, including the ~15.3% self-employment tax. Tax savings only enter the picture if you later make an S-corp election, and that only pays off at profit levels high enough to justify running payroll for yourself (commonly cited around $60k–$80k+ of net profit, but run the numbers with an accountant — payroll costs and state rules change the math).
It doesn't protect you from your own negligence
The liability shield protects you from the business's obligations — its debts, its contracts, claims against it. It does not protect you from things you personally did wrong. If you personally cause an injury, give negligent professional advice, or personally guarantee a loan (which lenders almost always require from new LLCs), you're on the hook regardless. This is why an LLC complements insurance rather than replacing it: general liability or professional liability coverage handles the scenarios the entity can't.
It doesn't work if you treat it like a personal piggy bank
Courts can "pierce the corporate veil" — plain English: ignore your LLC entirely and come after you personally — if you don't treat the LLC as a genuinely separate thing. The classic ways owners blow it: paying personal bills from the business account (commingling funds), skipping required state filings until the LLC is administratively dissolved, signing documents in your own name instead of the LLC's, and keeping no records at all. The shield is only as strong as your bookkeeping habits. Separate account, separate card, owner draws documented — that's most of the battle.
How to convert from sole proprietor to LLC later
This is the safety valve that makes "start simple" a low-regret choice. Going from sole proprietorship to LLC isn't legally a "conversion" at all — you're just forming a new entity and moving your existing business into it. The typical sequence:
- File articles of organization with your state's Secretary of State (online in nearly every state). Cost: the same ~$35–$500 filing fee as starting fresh. Approval takes anywhere from minutes to a few weeks depending on the state; many offer paid expedited processing.
- Get a new EIN from the IRS. Free, online, about 10 minutes. Even if you had an EIN as a sole proprietor, the IRS generally requires a new one for the LLC.
- Open a bank account in the LLC's name and stop running money through the old one. This is the step people skip, and it's the one that actually makes the liability shield real.
- Update licenses, registrations, and contracts. Re-register business licenses and permits under the LLC, update or cancel your old DBA, move client agreements to the LLC's name as they renew, and tell your insurer so policies name the right entity.
- Update the paper trail. Invoices, website footer, payment processors, W-9s on file with clients — anywhere your old name appears.
All-in, most owners spend $50–$800 (state fee plus, optionally, $0–$300 for a registered agent service and any expedited processing) and complete the switch within a couple of weeks. The mid-year tax handling is the one piece worth a quick conversation with an accountant: you may file one Schedule C covering the whole year for a single-member LLC, but state and payroll details vary.
The decision rule
If you remember one thing, make it this: start as a sole proprietor if you're testing a low-risk idea with little revenue; form an LLC the moment your business involves physical risk, real contracts, a partner, or money you'd genuinely hate to lose. And when in doubt, the cost of forming an LLC "too early" is a couple hundred dollars — the cost of forming one too late can be everything you own.
One last time, because it matters: this page is general information, not legal or tax advice. Fees, annual requirements, and protections differ by state, and your situation has details no article can see. Check your state's Secretary of State website for current requirements, and for anything with real stakes, spend the hour with a local attorney or CPA — it's the cheapest insurance you'll ever buy.