The LLC vs. sole proprietorship decision comes down to one question: is the liability protection worth the cost and paperwork?

Quick answer: A sole proprietorship is free, requires no paperwork, and works for low-risk side hustles. An LLC costs $50-$500 to form and protects your personal assets from business lawsuits and debts. If your business earns real revenue, serves clients, or carries any risk, form an LLC. The protection is worth it.

LLC vs. Sole Proprietorship: Side-by-Side

Feature Sole Proprietorship LLC
Formation cost $0 (free, no filing) $50-$500 (state filing fee)
Formation time Instant 1-4 weeks
Liability protection None — personal assets at risk Yes — personal assets protected
Tax treatment (default) Schedule C on personal return Same — Schedule C on personal return
Self-employment tax Yes (15.3% on net profit) Yes (unless S-corp election)
S-corp election option No Yes
Separate bank account required No (but recommended) Yes (to maintain liability protection)
Annual fees $0 $0-$800/year (varies by state)
Paperwork Minimal Moderate (annual reports, operating agreement)
Business name Your legal name (or DBA) Any available name
Credibility with clients Lower Higher
Ability to raise capital Limited Better (can add members)

Liability Protection: The Biggest Difference

Scenario Sole Proprietorship LLC
Client sues your business Your house, car, savings at risk Only business assets at risk
Business debt you can’t pay Creditors can go after personal assets Personal assets protected
Employee injures someone Personal liability Business liability only
Product causes harm Personal liability Business liability only
You slip on a client’s property Personal liability (not business-related) Personal liability (not business-related)

Key exception: An LLC doesn’t protect you from personal negligence, fraud, or personally guaranteed loans.

Tax Comparison

Default Tax Treatment (Identical)

Tax Sole Proprietorship Single-Member LLC
Income tax Schedule C → Form 1040 Schedule C → Form 1040
Self-employment tax 15.3% on net profit 15.3% on net profit
Quarterly estimated taxes Required if owing $1,000+ Required if owing $1,000+
Business deductions Full access (home office, mileage, etc.) Full access (same deductions)
QBI deduction Up to 20% of qualified income Up to 20% of qualified income

The S-Corp Tax Advantage (LLC Only)

Scenario LLC (Default) LLC with S-Corp Election
Net business profit $100,000 $100,000
Reasonable salary N/A $60,000
Remaining profit (distribution) N/A $40,000
Self-employment tax $14,130 (on $100K) $9,180 (on $60K salary only)
Annual SE tax savings $0 ~$4,950

The S-corp election makes sense when net profit consistently exceeds $40,000-$50,000/year.

Cost Comparison

Cost Sole Proprietorship LLC
State formation fee $0 $50-$500
Annual report/franchise tax $0 $0-$800 (CA is $800/yr)
DBA/trade name filing $10-$50 (if using business name) Usually included
EIN (Employer ID Number) Free from IRS Free from IRS
Business bank account Free-$15/mo Free-$15/mo
Registered agent (if required) N/A $0-$125/yr
Operating agreement N/A Free (DIY) or $99-$300
First-year total $0-$65 $100-$1,500
Annual ongoing $0 $0-$925

When to Choose Sole Proprietorship

Situation Why It Works
Testing a business idea No cost, instant start
Low-risk hobby income Selling crafts at a market, tutoring
Very small side income (<$5K/year) LLC cost not justified
No client-facing liability Writing, virtual bookkeeping
Temporary or seasonal work Short-term freelance gigs

When to Choose LLC

Situation Why It’s Better
Revenue exceeds $20,000/year Liability protection is worth the cost
Client-facing services Clients can sue — protect personal assets
You have employees or contractors Employment liability exposure
Physical products or inventory Product liability risk
Commercial lease or equipment Separates business obligations
Want to appear professional LLC looks more credible to clients
Future S-corp election Need LLC structure first
Multiple business partners LLC operating agreement defines roles

How to Switch From Sole Proprietorship to LLC

Step Action Cost Time
1 Choose LLC name Free Instant
2 File Articles of Organization with state $50-$500 1-4 weeks
3 Get new EIN from IRS Free Instant (online)
4 Draft operating agreement Free-$300 1 day
5 Open business bank account under LLC Free 1 day
6 Update contracts, invoices, licenses Free 1-2 weeks
7 Appoint registered agent (if required) $0-$125/yr Instant

State-by-State LLC Costs

State Formation Fee Annual Fee Notes
California $70 $800/yr franchise tax Most expensive annual cost
Texas $300 $0 No annual franchise tax for small LLCs
Florida $125 $138.75/yr Annual report required
New York $200 $9 (biennial) Publication requirement ($500-$1,500+)
Delaware $90 $300/yr Popular for investors/corps
Wyoming $100 $60/yr Cheapest ongoing LLC
Nevada $75 $350/yr No state income tax
New Mexico $50 $0 Cheapest formation, no annual fee

Bottom Line

Start as a sole proprietorship if you’re testing an idea with minimal risk and revenue. Form an LLC as soon as your business has real income, serves clients, or carries any liability exposure. The $100-$500 formation cost is trivial insurance against having your personal savings, home, or car taken in a lawsuit. For most serious businesses, the LLC is the right choice from day one.

Related: How to Start a Business | LLC vs. S-Corp | How to Form an LLC | LLC Cost by State