LLC vs. Sole Proprietorship
Every unincorporated business starts as a sole proprietorship by default. This comparison shows exactly what changes, and what does not, when you form an LLC instead.
The one-sentence difference
As a sole proprietor, you and the business are legally the same person. As an LLC owner, the business is a separate legal entity that you own. Nearly every difference in cost, paperwork, and protection flows from that single fact.
Side-by-side comparison
| Question | Sole proprietorship | LLC |
|---|---|---|
| How it starts | Automatically, the moment you do business. No filing. | You file a formation document with the state and pay the state fee. |
| If the business is sued or owes money | You are personally responsible. Your personal assets are exposed. | Claims generally stop at the business, with the limits described in our LLC guide. |
| Federal income tax by default | On your personal return, Schedule C. | Identical for a single-member LLC: pass-through, Schedule C. |
| Self-employment tax | Owed on business profit. | Also owed by default. Forming an LLC alone does not reduce it. |
| Ongoing state paperwork | None at the entity level. Licenses still apply. | Annual or biennial reports and fees in most states, plus any state LLC tax. |
| Cost to maintain | Near zero at the entity level. | State report fees, a registered agent if hired, and state-specific taxes. See the calculator. |
| Banking and credibility | Many banks let sole proprietors open business accounts, sometimes with a DBA. | A registered entity with an EIN opens accounts, leases, and vendor terms more smoothly. |
| Taking on a partner | You become a general partnership by default, with shared personal liability. | Members and ownership splits are written into an operating agreement. |
| Business name protection | A DBA registers a trade name but creates no entity and no statewide exclusivity of the kind a formation filing checks. | The state checks your name against its business registry when you file. |
The tax question everyone asks
Forming a single-member LLC does not, by itself, change your federal taxes at all. Same Schedule C, same self-employment tax, same deductions. Anyone who sells you an LLC as a tax dodge is selling you a filing fee. Where taxes can change is with an election: an LLC may elect to be taxed as an S corporation, which can reduce self-employment tax on part of the profit for businesses earning enough to justify the payroll and extra filings. That is a calculation for a tax professional with your real numbers, and it is available to an LLC without changing the entity itself.
Run the same dollars through both structures and nothing moves. On $60,000 of net profit, a sole proprietor reports the $60,000 on Schedule C and owes self-employment tax of about $8,478 (the 15.3% rate applied to 92.35% of net earnings, the way the IRS computes it). A single-member LLC reports the same $60,000 on the same Schedule C and owes the same $8,478, plus the same income tax on top. Identical taxes, identical deductions. What the LLC adds in that example is the liability wall and nothing else, which is either worth the state fees to you or it is not. The full mechanics are on our guide to how LLC taxes work.
When each one fits
A sole proprietorship is reasonable when the activity is tiny, low-risk, and has no contracts, no clients who could sue, no employees, and no plans to grow. Testing an idea at a farmers market is the classic case. The cost of staying simple is zero, and you can always form an LLC later.
An LLC earns its keep when you sign contracts, take on debt, hold property, hire anyone, sell products that could hurt someone, or simply have personal assets worth protecting. The formation fee and an annual report are cheap insurance compared to one personal judgment. The honest framing: you are not buying a tax break, you are buying a wall, plus the paperwork discipline that comes with it.
Starting as one and switching later
Plenty of businesses start informal and form an LLC once income or risk shows up. The switch means filing the formation document, getting an EIN for the LLC, moving the bank account and contracts over, and telling your insurers and payment processors. Nothing about starting as a sole proprietor blocks you from forming later, and nothing about forming later erases obligations from before. Form before the risk arrives, not after.
Common questions
Does forming an LLC lower my taxes?
Not by itself. A single-member LLC files the same Schedule C and owes the same self-employment tax as a sole proprietorship. Taxes can change with an S corporation election, which is a separate calculation to run with a tax professional, and the election is available without changing the entity.
Can I start as a sole proprietor and form an LLC later?
Yes. Plenty of businesses start informal and form once income or risk shows up. The switch means filing the formation document, getting an EIN for the LLC, and moving the bank account, contracts, insurers, and payment processors over. It does not erase obligations from before the switch.
What does each one cost to keep?
A sole proprietorship costs near zero at the entity level. An LLC adds state report fees, a registered agent if you hire one, and any state LLC tax. The calculator on this site totals the LLC side for your state.
What happens if a sole proprietor takes on a partner?
You become a general partnership by default, with shared personal liability, unless you form something else. Inside an LLC, the same move is handled by membership and an operating agreement instead.
Can a sole proprietor open a business bank account?
Usually, yes. Many banks let sole proprietors open business accounts, sometimes under a DBA. A registered LLC with an EIN tends to open accounts, leases, and vendor terms more smoothly.
General Information Only
LLCForming publishes general information about forming and running an LLC. It is not legal, tax, or accounting advice, and it does not create an attorney or advisor relationship. Rules vary by state and by your situation. For a decision that matters, talk to a licensed attorney or tax professional in your state.