LLC vs sole proprietorship
The practical differences. Liability protection (the main one), taxes (often identical), cost ($129 state average vs free), and when each makes sense. Written for a working owner who wants a decision, not a law review article.
The one difference that actually matters
A sole proprietorship is you, operating a business. Legally, there is no separation. Every contract the business enters, every debt it takes on, every customer complaint it receives, happens directly to you as a person. Your personal bank account and the "business" bank account are legally the same thing.
An LLC is a separate legal entity you create by filing paperwork with your state's Secretary of State. The business becomes its own legal person. Contracts are entered in the LLC's name. Debts are the LLC's obligation, not yours. If someone sues the LLC, they can reach the LLC's assets but (in almost all circumstances) not your personal ones. This is called the "corporate veil" or "limited liability shield," and it is the single thing LLCs were invented to provide.
Everything else is secondary. Taxes are by default identical. Paperwork is slightly more for an LLC but not dramatically. Naming and branding work the same either way. The decision comes down to whether you need the liability shield.
Side by side
| Sole proprietorship | LLC | |
|---|---|---|
| Legal separation from owner | None. Owner and business are the same legal person. | Complete. The LLC is a separate legal entity. |
| Personal liability for business debts | Unlimited. Personal assets are fully exposed. | Limited to the LLC's assets, with few exceptions. |
| Formation cost | $0 (no formation step). | $129 average state filing fee. See cost breakdown. |
| Annual state fees | None. | Varies. Average around $100/yr. Some states charge nothing. |
| Federal tax treatment | Schedule C on owner's 1040. | Same (Schedule C) by default. S-corp or C-corp election optional. |
| Self-employment tax | 15.3% on net earnings. | Same 15.3% by default. S-corp election reduces this. |
| State income tax | Owner's personal state tax rate. | Same pass-through treatment in most states. Exceptions in CA, DE, TN, TX, etc. |
| EIN required | Only if hiring employees or opening a business bank account. | Required if multi-member. Strongly recommended even for single-member. |
| Business bank account | Strongly recommended but not required. | Required to maintain the liability shield. Commingling kills the protection. |
| Operating agreement | Not applicable. | Required in CA, DE, ME, MO, NY. Recommended everywhere else. |
| Can have multiple owners | No (that's a partnership). | Yes. Multi-member LLC default to partnership taxation. |
| Credibility with customers and lenders | Lower. Some corporate clients won't contract with a sole prop. | Higher. Treated as a real entity by banks, insurers, and enterprise clients. |
The liability question, made concrete
Imagine three hypothetical businesses, one year in. A customer sues each for $200,000 after a delivered product injures them.
Sole proprietorship
The lawsuit is against the owner personally. If the plaintiff wins a $200,000 judgment, the plaintiff can garnish the owner's wages, levy the owner's personal bank accounts, and (in states allowing it) force the sale of non-exempt personal property. The owner's equity in a home beyond the state's homestead exemption is exposed. There is no firewall.
LLC, properly maintained
The lawsuit is against the LLC. If the plaintiff wins, they can collect from the LLC's assets (bank account, inventory, receivables) but cannot touch the owner's personal assets unless they successfully "pierce the corporate veil," which requires proof of fraud, commingling, or gross undercapitalization. Proper record-keeping and a separate bank account defeat most piercing attempts.
LLC, sloppy maintenance
If the owner paid personal bills from the LLC account, signed contracts in their personal name instead of the LLC's, or failed to observe basic formalities, a judge can rule the LLC was a sham and "pierce the veil." The owner ends up personally liable. This is why sole-prop-style habits will hurt you inside an LLC if you don't change them.
When a sole proprietorship is enough
A sole proprietorship is fine when all four of these are true at the same time:
- No employees. Employees bring wage-and-hour exposure, harassment exposure, and workers' comp obligations. These risks are existential for an individual.
- No physical location where people visit. Retail, restaurants, studios, and service businesses with walk-in clients face premises liability (slip-and-fall, customer injury). Remote-only businesses face less of this.
- Nothing you sell could seriously harm someone. Services like writing, graphic design, or consulting rarely cause direct physical harm. Products, food, and physical work do.
- Your personal wealth is modest. If you have no significant home equity, retirement savings, or personal investments to lose, the liability shield protects less in absolute terms.
The classic sole-prop businesses that stay sole-prop indefinitely: solo freelancers, part-time tutors, one-person web design shops, early-stage side hustles earning under $10K/year. They simply don't have enough exposure to justify the state filing fee.
When you should form an LLC
Form an LLC the moment any one of the sole-prop conditions breaks. The most common triggers:
- Hiring your first employee or contractor
Employment exposure is the single most common reason businesses incorporate. A wrongful-termination or harassment claim against a sole prop is a lawsuit against the owner personally.
- Signing a lease or buying equipment
Commercial leases typically require personal guarantees from sole props (because there's no entity to sign), putting your personal credit on the hook for the full lease term. LLCs can often negotiate a lease in the entity's name.
- Customer revenue starts exceeding $25K/year
Not a legal threshold, just a practical one. At that revenue, you start attracting professional-level customers who may require a corporate entity to do business with you, and the stakes of a single bad transaction start to matter.
- Selling a product that could harm someone
Food, cosmetics, supplements, tools, children's products. Product liability is a fast path to personal financial ruin for a sole prop.
- Adding a business partner
Two people owning a business together is a partnership, which has unlimited joint-and-several liability. Each partner is personally liable for the other's business decisions. An LLC (or LLP) cleans this up immediately.
- Buying real estate for the business
Rental properties and business real estate belong in an LLC, not held personally. Personal ownership exposes your other assets if a tenant sues over the property.
Taxes: no difference by default, potential savings with S-corp election
A single-member LLC is taxed exactly like a sole proprietorship by default. The LLC files nothing separately at the federal level; the owner reports business income and expenses on Schedule C of their personal 1040, just like a sole proprietor. Self-employment tax (15.3% covering Social Security and Medicare) applies to all net earnings either way.
The exception is the S-corp election. An LLC can file IRS Form 2553 to be taxed as an S-corporation. The S-corp election splits the owner's income into salary (subject to self-employment tax) and distributions (not subject to self-employment tax). This can save thousands per year for businesses earning over $60K in net profit. The election is only available to LLCs and corporations, not sole proprietors. See LLC vs S-corp for the full breakdown.
State-specific considerations
State tax treatment and filing costs vary meaningfully. A few highlights worth knowing before you pick a state:
- No state income tax in 9 states (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming). In those states, whether you're a sole prop or an LLC, state income tax is a non-issue. The choice comes down to liability shield only.
- California's $800 FTB minimum. Every California LLC owes $800 per year in franchise tax, regardless of income. A California sole prop pays nothing equivalent. For a low-revenue California business, this is a meaningful tax disadvantage vs sole prop, though the liability shield usually still wins. See California formation.
- Publication fees in New York. New York requires new LLCs to publish formation notices in two newspapers for six weeks, at county-determined rates from $500 to $1,800. Sole props have no equivalent requirement. See New York formation.
- Delaware's $300 flat tax. Not a good reason to form in Delaware if you live elsewhere. Delaware's advantages are for companies intending to raise outside capital, not solo operators. See Delaware formation.
Frequently Asked Questions
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What's the main difference between an LLC and a sole proprietorship?
A sole proprietorship is legally inseparable from the person who runs it. There is no formation step, no state filing, no separate entity. An LLC is a legally separate entity created by filing paperwork with the state. That separation is the entire reason LLCs exist: if the LLC is sued, only its assets are at risk, not yours personally. A sole proprietor has no such shield; every lawsuit against the business is a lawsuit against the owner's personal assets.
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Do I save money with a sole proprietorship?
In the first year, yes. A sole proprietorship costs $0 to "form" because there's nothing to file. An LLC costs $129 on average in state filing fees, plus potentially an annual report fee and (in a few states) franchise tax. Over five years, the cost gap is typically $500 to $2,000 depending on the state. For most owners earning $50K+ per year, that gap is worth it for the liability protection. For side hustles earning a few hundred dollars a year, the gap is harder to justify.
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Are taxes different between an LLC and a sole proprietorship?
By default, no. A single-member LLC is a "disregarded entity" for federal tax purposes, meaning it files the same Schedule C as a sole proprietor. Income, expenses, and self-employment tax flow through identically. The LLC can optionally elect S-corp or C-corp tax treatment (which does change the math), but the default treatment is tax-neutral vs a sole proprietorship. See LLC vs S-corp for when the election starts saving money.
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Can a sole proprietor be sued?
Yes, and personally. If your sole proprietorship slips and falls on a customer, or breaches a contract, or is sued for any reason, the plaintiff can reach your personal bank account, your car, and (in most states with exceptions) your home. There is no corporate veil because there is no corporation. This is the single biggest reason most small businesses eventually convert to an LLC once they have any meaningful exposure: employees, physical premises, inventory, or customer liability risk.
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When is a sole proprietorship good enough?
When all four of these are true: the business has no employees, no physical premises, no customers who could plausibly sue you for harm, and you have little personal wealth to protect. Freelance writers, consultants working remotely from home, and side-hustle resellers often operate as sole proprietors for years without issue. The moment any of those conditions change (hiring help, opening a location, carrying inventory, building meaningful net worth), the sole proprietorship stops being enough.
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Do I need a business license either way?
Usually yes, and independently of entity choice. Most cities and counties require any business operating in their jurisdiction to have a business license or occupational license, regardless of whether you're a sole proprietor, LLC, or corporation. The license is about where you operate, not what legal structure you use. Budget $25 to $200 for a local license on top of any state formation fees.
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Can I convert a sole proprietorship to an LLC later?
Yes, easily. Form an LLC, transfer the business assets and contracts to the LLC, get a new EIN in the LLC's name, and open a new bank account. The sole proprietorship just stops existing (nothing to dissolve). Most small businesses that start as sole props convert to LLCs within 1 to 3 years as revenue grows. Waiting doesn't hurt if the business is tiny; converting when it starts to have meaningful assets or exposure is usually the right trigger.
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What about a DBA? Isn't that almost the same as an LLC?
No. A DBA (doing business as, also called an assumed name or fictitious business name) is a registered nickname for your business. It does not create a separate legal entity and does not provide any liability protection. A sole proprietor with a DBA is still a sole proprietor with the same personal liability as one without a DBA. A DBA is purely a naming tool, useful for operating under a different name than your legal one.
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Is an LLC worth it for a side hustle?
Usually not, until the side hustle hits meaningful revenue or involves real liability. A $2,000-a-year Etsy shop selling hand-crocheted scarves probably doesn't need an LLC. A $15,000-a-year consulting side business with corporate clients probably does, because those clients may require an entity contract and because errors-and-omissions exposure is real. Use the liability question as your trigger, not the revenue number.