LLC vs sole proprietorship
Side-by-side comparison of liability, taxes, setup cost, and credibility — plus when to switch from sole proprietor to LLC.
| Sole proprietorship | LLC | |
|---|---|---|
| Personal liability | Unlimited — your personal assets are at risk | Limited — business debts stay with the LLC |
| Setup | No paperwork — you're a sole proprietor by default | File Articles of Organization with the state |
| State filing fee | $0 | $40–$500 depending on state |
| Federal taxes (default) | Schedule C on your 1040 | Pass-through — Schedule C (single-member) or Form 1065 (multi-member) |
| Self-employment tax | Yes, on all profit | Yes by default; can elect S-corp to reduce |
| Business bank account | Optional, often hard to open | Required separation, easy to open with EIN |
| Raising outside capital | Very difficult | Possible (members/units); C-corp is better for VC |
| Credibility with customers | Lower | Higher — formal entity name |
Liability
An LLC separates business debts from your personal assets. A sole proprietor is personally on the hook for every contract and lawsuit.
Taxes
Default LLC taxation matches sole proprietor (Schedule C). LLCs can later elect S-corp to lower self-employment tax once profit is high enough.
When to switch
Switch when you sign contracts, hire, take outside money, or simply want a business bank account in the business's name.
Should I be an LLC or sole proprietor?
If you're testing an idea on the side, sole proprietor is fine — zero paperwork. The moment your business has real customers, contracts, or anything to lose, the liability shield of an LLC almost always justifies the one-time state filing fee.
Already operating as a sole proprietor? You can convert to an LLC at any time — get an EIN under the new entity, move your bank account, and update contracts. ClearFormation handles the LLC filing, registered agent, and EIN in one flow.
Liability: what it actually means
"Personal liability" sounds abstract until it isn't. As a sole proprietor, you and the business are the same legal person. If a customer sues over a defective product, a contractor gets hurt on your job site, or a client claims you blew a deadline that cost them money, the judgment attaches to you — your savings, your car, the equity in your home, your future wages.
An LLC creates a separate legal person. The customer sues the LLC, not you, and the judgment attaches to LLC assets only. This shield holds as long as you treat the LLC as a real entity: separate bank account, no personal expenses through the business card, contracts signed in the LLC's name, and basic records kept (operating agreement, annual report, EIN).
Taxes: identical by default
This is the part most founders get wrong: a single-member LLC is taxed exactly like a sole proprietorship. Both file Schedule C with their personal 1040. Both owe self-employment tax (15.3%) on net profit. Both can deduct the same business expenses, take the home-office deduction, and claim the QBI deduction. There is no federal income tax penalty for forming an LLC.
The LLC gives you something a sole prop doesn't: the option to elect S-corp taxation by filing Form 2553. Once profit reliably exceeds ~$60–80k per active owner, the S-corp election can save several thousand dollars per year in self-employment tax. A sole proprietor can't make this election — only an LLC or corporation can.
Cost & ongoing compliance
Sole prop costs nothing to start and nothing to maintain — that's the headline benefit. An LLC has a one-time state filing fee ($40 in Kentucky, $500 in Massachusetts, most states $100–$200) and an annual report or franchise tax in most states ($0–$800/yr depending on state). Add a registered agent if you don't want your home address public ($0–$150/yr). The full breakdown lives in our LLC cost guide.
When to switch from sole prop to LLC
The honest trigger list. Switch if any of these are true:
- You sign client, vendor, or lease contracts
- You sell a product that could harm a customer
- You hire employees or 1099 contractors
- You handle customer payments, data, or money in trust
- Your annual profit is past ~$60–80k and S-corp election would save real money
- A client, platform, or bank refuses to work with an individual
- You want to bring on a co-founder or split equity
How to convert sole prop to LLC
- File Articles of Organization in your state. ClearFormation handles this in the wizard.
- Apply for a new EIN under the LLC. The sole-prop EIN does not carry over.
- Open a new business bank account in the LLC's legal name.
- Re-sign or assign any active client and vendor contracts to the LLC.
- Update Stripe, PayPal, Amazon, Shopify, payroll, and accounting software with the new EIN.
- Cancel or transfer DBAs registered under your personal name.
- File the final Schedule C for the sole prop year; the LLC starts its own tax year going forward.
When a sole prop is still fine
Genuinely zero-risk side projects with no contracts, no inventory, no customer data, and revenue that wouldn't change your life if it disappeared. Examples: a hobby blog earning AdSense, a one-off consulting gig billed to your name, selling old gear on eBay. Once any of those scales or gets contractual, the LLC math changes.
Common mistakes
- Signing client contracts as a sole prop after revenue gets real
Every contract is a personal exposure. Form the LLC before the next renewal cycle.
- Forming an LLC but commingling funds
Using the business card for groceries pierces the shield. Strict separation is the whole point.
- Assuming LLC = higher taxes
Default LLC tax = sole prop tax. There is no penalty for forming.
- Skipping the new EIN after conversion
Sole-prop EIN does not transfer. Banks and payment processors will flag it.