LLC vs Sole Proprietorship: the liability shield is the difference.
A side-by-side comparison of structure, tax treatment, liability protection, cost, and use cases. The decision usually comes down to a few specific factors; this guide walks through each.
Form an LLC unless you are still testing an idea. The state fee is small ($35-$520 depending on state); the liability protection is the entire point of business law.
Which fits your situation.
- You are testing an idea with no real revenue yet
- No clients, employees, contracts, or physical property
- You have nothing to lose if you get sued
- You will form an LLC later when revenue is real
- You have any clients or sign any contracts
- You hire anyone (employees or contractors)
- You own any property used in the business
- You have any personal assets worth protecting (home, savings)
- You want a professional business identity
Every factor that matters.
| Factor | Sole Proprietorship | LLC |
|---|---|---|
| Setup | None required, you are already a sole proprietor by default | State filing fee ($35 to $520), Articles of Organization, EIN |
| Liability shield | None. Owner personally liable for all business debts | Yes. Personal assets shielded from business debts and lawsuits |
| Tax treatment | Pass-through to personal Schedule C | Pass-through to personal Schedule C by default; can elect S-Corp or C-Corp |
| Self-employment tax | Owner pays 15.3% on all profits | Same on profits unless S-Corp election reduces it above ~$60k profit |
| Banking | Use personal account or sole-prop account in owner name | Business bank account in entity name with EIN |
| Hiring employees | Can hire under owner SSN, but adds personal exposure | Hire under entity EIN; employer liability is the entity, not the owner |
| Operating Agreement | None | Yes, required by banks and lenders |
| Annual maintenance | None | State annual report ($25-$500 depending on state) and Registered Agent |
| Cost to maintain | $0 | $25-$500/year state fees plus optional Registered Agent ($99/yr) |
| Investor / lender access | Limited; lenders prefer entities | Standard; lenders, investors, and partners expect an entity |
| Trademark and brand protection | Owner can register, weaker enforcement | Entity can register, cleaner enforcement and assignment |
| What if owner dies | Business dissolves with the owner | LLC continues; ownership transfers per Operating Agreement |
How each is taxed.
By default, the IRS taxes both the same way for federal income tax: pass-through to the owner's Schedule C of Form 1040. The owner reports business profits and losses on their personal return. Self-employment tax (15.3%) applies to net profits in both cases.
The LLC offers an additional option: S-Corp tax election (Form 2553). Once net profit crosses approximately $60,000 to $80,000, S-Corp election lets the owner pay themselves a reasonable salary through payroll, then take the rest as distributions exempt from self-employment tax. Typical savings: $4,000 to $15,000 per year at $100k-$200k of profit.
Sole proprietors cannot elect S-Corp. They pay self-employment tax on all profits regardless of size.
What each costs.
Sole proprietorship has no formation cost. You are a sole proprietor the moment you start doing business activities without forming an entity.
LLC formation costs are state filing fees only. Lowest: Kentucky $40, Montana $35, Arkansas $45. Highest: Massachusetts $520, Nevada $425. Most states fall between $50 and $200. Our service fee is $0. Annual maintenance is the state annual report fee, typically $25 to $200, plus Registered Agent service if you use one ($99 per year after first year).
Across 10 years, an LLC in a low-cost state (e.g., Wyoming at $100 formation + $60 annual) costs about $700 total. That is the price of liability protection for a decade.
Protection differences.
This is the central difference. A sole proprietorship is not a separate legal entity. The owner and the business are the same legal "person." If a customer sues the business, they are suing the owner. If the business cannot pay a debt, the creditor can pursue the owner's personal assets: home, car, savings, investments.
An LLC is a separate legal entity. The LLC owns the business; the owner owns the LLC. If a customer sues the LLC, they are suing the entity, not the owner. The LLC's assets are at risk; the owner's personal assets generally are not. This is the "liability shield" or "corporate veil," and it is the entire reason LLCs exist as a legal structure.
The shield is not absolute. Courts can "pierce the corporate veil" if the owner commingles personal and business funds, fails to maintain the LLC as a separate entity, commits fraud, or undercapitalizes the LLC. Maintaining the shield requires: separate bank account, Operating Agreement, no commingling, annual reports filed on time, and treating the LLC as a separate entity.
The File.Business Promise
If we miss a filing deadline on a service you pay us to manage, we pay the state penalty. If you change your mind in the first 60 days, we refund our service fee in full.
Common questions.
When should I convert from sole prop to LLC?
Will I save on taxes by forming an LLC?
Can my LLC have just me as the owner?
What if I am operating as a sole prop now and want to upgrade?
Does an LLC change my tax forms?
How long does forming an LLC take?
Do I need an LLC to file taxes as a business?
What about a DBA instead of an LLC?
Can my spouse and I run an LLC together?
Is forming an LLC worth it if I make under $50k?
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