What Is a Sole Proprietorship? Definition, Pros, Cons, Taxes and How to Start
Direct answer
A sole proprietorship is the simplest business structure: one person owns and runs an unincorporated business, with no legal separation between the owner and the business. You are automatically a sole proprietor once you start selling goods or services on your own — no state filing required. Income is reported on your personal tax return, but you are personally liable for all business debts and lawsuits.
Key Takeaways
- A sole proprietorship is an unincorporated business owned by one person — the easiest and cheapest way to start a business.
- There is no legal entity separate from you: you keep all profits, but you carry unlimited personal liability for debts and legal claims.
- Taxes are simple: business income goes on your personal tax return (Form 1040, Schedule C), plus self-employment tax of about 15.3% on net earnings.
- No registration is required to exist, but you may still need a business license, a DBA name registration, and an EIN if you hire employees.
- Many owners start as sole proprietors and convert to an LLC once the business grows or liability risk increases.
What Is a Sole Proprietorship?
A sole proprietorship is a one-person, unincorporated business. Legally speaking, it is not a separate legal entity — you and the business are the same thing. A sole proprietor is simply the individual who owns and operates that business.
If you start freelancing, sell handmade goods, do yard work for pay, or run any business alone without forming a company, you are already operating as a sole proprietor. That is what qualifies you: being the single owner of an unincorporated business. Most sole proprietors form without any paperwork at all — the structure exists the moment you begin doing business.
This simplicity is exactly why sole proprietorships are the most common business structure among new and very small businesses. But that simplicity comes with one serious trade-off, which we will cover next.
How Many Owners Does a Sole Proprietorship Have?
Exactly one. The word “sole” is literal — a sole proprietorship has a single owner, and there are no partners or shareholders.
If you add a second owner, the structure changes automatically: an unincorporated business with two or more owners is generally treated as a partnership, not a sole proprietorship. And if you want a one-owner business that is legally separate from you, the standard option is a single-member LLC — which, by default, is taxed like a sole proprietorship while giving you a liability shield.
Pros and Cons of a Sole Proprietorship
The advantages and disadvantages of a sole proprietorship are two sides of the same coin: the same lack of formal structure that makes it easy to start also removes your legal protection. Here is the honest breakdown.
| Pros | Cons |
|---|---|
| Easy, fast and cheap to start — no formation documents, no state filing fees | Unlimited personal liability — personal assets (home, savings) are at risk for business debts and lawsuits |
| Full control — you make every decision alone | Harder to raise capital — no stock to sell, no partners to bring in; banks may hesitate on large loans |
| Simple taxes — income and expenses reported on your personal return; no separate corporate return | Self-employment tax on all profit — about 15.3% on net earnings, on top of income tax |
| Privacy — no public financial disclosures required | Less credibility with some clients — an LLC or corporation can look more established |
| Losses can offset other income — early-year losses may reduce your overall tax bill | Harder to sell or transfer — the business is tied to you personally |
| EIN optional — you can often use your Social Security number for taxes | No business continuity — the business ends if you stop operating it |
The big advantages in detail
Starting is nearly effortless. There is no state paperwork to form a sole proprietorship. Compare that with an LLC or corporation, which requires filing articles with the state and paying fees. You can go from idea to operating in a day.
Taxes stay simple. Business income and expenses flow directly onto your individual return — typically Form 1040 with Schedule C, plus Schedule SE for self-employment tax. There is no separate business return and no double taxation of profits.
You keep everything and control everything. All profits are yours, and no one else has a vote. For freelancers, consultants and side hustlers, that autonomy is the main draw.
The big disadvantages in detail
There is zero liability protection. This is the single biggest risk. Because there is no legal separation between you and the business, a lawsuit or unpaid debt can reach your personal bank accounts, car, or home. If your work involves physical risk, large contracts, employees, or significant debt, this matters a great deal.
Every dollar of profit carries self-employment tax. W-2 employees split payroll taxes with their employer; sole proprietors pay the full amount — roughly 15.3% covering Social Security and Medicare — on net business earnings, plus ordinary income tax.
Growth has friction. Raising serious capital is harder without a formal entity, some clients prefer working with incorporated businesses, and selling the business or passing it on is more complicated.
For a deeper independent breakdown, Chase’s business knowledge center has a thorough sole proprietorship vs. LLC comparison worth reading: https://www.chase.com/business/knowledge-center/start/sole-proprietorship-vs-llc
How Does a Sole Proprietorship Pay Taxes?
Sole proprietorships are pass-through businesses: the business itself pays no income tax. Instead, profit (and loss) passes through to you.
Here is how it works in practice:
- Track income and expenses throughout the year.
- Report net profit on Schedule C attached to your personal Form 1040.
- Calculate self-employment tax on Schedule SE — about 15.3% (12.4% Social Security + 2.9% Medicare), applied to 92.35% of net earnings, covering Social Security and Medicare.
- Pay income tax on the profit at your ordinary personal tax rates.
Two useful details: business losses can offset other income (such as a salary), subject to IRS limits — which can lower your overall tax bill in a startup year. And because no tax is withheld from business income, most sole proprietors need to make quarterly estimated tax payments to avoid an underpayment penalty at filing time.
This structure is common enough that the IRS gives it a whole section of guidance under its business-structures resources — but the forms above are the practical core of it.
Does a Sole Proprietor Need a Business License?
No state filing is required to be a sole proprietor, but you may still need business licenses or permits to operate legally. This trips people up, so here is the distinction:
- Forming the business: no paperwork needed — you already are one.
- Operating legally: many states, counties and cities require a general business license, and regulated industries (food, childcare, contracting, cosmetology, finance) nearly always require professional permits or certifications.
Check your state, county and city requirements before you start taking clients. Some sole proprietors also register a DBA (“doing business as”) or fictitious business name if they operate under a name other than their own legal name — banks often require it to open an account under the business name.
How to Start a Sole Proprietorship
Starting is intentionally simple. Follow these steps:
- Choose your business name. You can operate under your own legal name, or register a DBA/fictitious name for branding and banking.
- Get the licenses and permits you need. Check federal, state and local rules for your industry.
- Get an EIN if you need one. Optional for most sole proprietors (you can use your Social Security number), but required if you hire employees — and many banks require one to open a business account.
- Open a separate business bank account. Technically not required, but strongly recommended: it makes bookkeeping, taxes and future incorporation far easier.
- Set up simple accounting. Track every dollar of income and expense from day one — a spreadsheet is fine to start; many owners pair it with one of the budgeting tools covered in our best budgeting apps guide.
- Plan for taxes. Set aside a portion of each payment for income and self-employment tax, and look into quarterly estimated payments.
Sellers who build an online store often start as sole proprietors — see our guide on how to create an online store.
Do Sole Proprietors Need an EIN?
Usually not. An Employer Identification Number (EIN) — a federal tax ID — is not required for a sole proprietor with no employees; your Social Security number works for tax filings.
Get one anyway if any of these apply:
- You hire employees (legally required).
- You want a business bank account (most banks require an EIN or DBA).
- You prefer not to hand your Social Security number to clients and vendors on W-9 forms — an EIN is the more professional, privacy-friendly option.
Applying for an EIN is free and takes minutes on the IRS website.
Can a Sole Proprietor Hire Employees?
Yes. Being a sole proprietor does not limit you to working alone. When you hire, you must:
- Obtain an EIN from the IRS.
- Withhold taxes from wages (Social Security, Medicare, federal income tax) and pay the employer share.
- Comply with federal and state labor laws — wage standards, workers’ compensation, and unemployment insurance.
Hiring employees is also one of the moments many owners reconsider the structure, since employees increase liability exposure — which is a common trigger for converting to an LLC.
Examples of Sole Proprietorships
Common sole proprietors include:
- Freelancers — writers, editors, graphic designers, developers
- Consultants and coaches — business consultants, financial advisors, tutors
- Tradespeople — electricians, plumbers, landscapers, handymen
- Creatives — photographers, videographers, social media specialists, musicians
- Local services — cleaning services, pet sitters, personal trainers
- Sellers — artisans, craft sellers, market stall vendors
The pattern: one skilled person selling their time or products directly, often from home, with low overhead and low liability exposure. Many freelancers also keep a close eye on cash flow from the start — our best budgeting apps guide can help solo earners track income and expenses.
Sole Proprietorship vs LLC: What’s the Difference?
This is the comparison that matters most. An LLC (limited liability company) is a formal business structure that creates a separate legal entity — the thing a sole proprietorship deliberately skips.
| Sole Proprietorship | LLC | |
|---|---|---|
| Legal entity | Not separate from the owner | Separate legal entity |
| Liability | Unlimited personal liability | Limited liability — personal assets generally protected |
| Formation | None required; automatic | State filing + fees required |
| Taxes (default) | Pass-through on personal return | Single-member LLC: taxed exactly like a sole proprietorship by default |
| Tax options | Personal return only | Can elect S-corp or C-corp taxation as revenue grows |
| Paperwork | Minimal ongoing requirements | Annual reports and state compliance in most states |
| Credibility | Can look less established | Often perceived as more professional |
| Cost | Cheapest possible | Formation and ongoing state costs |
The key insight: a single-member LLC is taxed by default the same way as a sole proprietorship — so converting is mostly about buying liability protection, not changing your taxes. As the business grows, the LLC’s option to elect S-corporation taxation can also reduce self-employment tax, which is one of the main reasons profitable owners convert. (An S corp is a tax election you make on an existing entity, not a separate structure you start from scratch.)
Carry’s detailed pros-and-cons guide covers the tax mechanics well: https://carry.com/learn/sole-proprietorship-pros-cons
When Should You Convert to an LLC?
Many successful businesses start as sole proprietorships and convert later. Consider making the switch when:
- Your work carries real liability risk (clients on-site, physical products, employees, contracts with penalties).
- You have personal assets worth protecting — a home, savings, investments.
- You want to hire or bring on a partner.
- The business is profitable enough that S-corp tax election could save meaningful money — talk to a tax professional about the math.
- You need the credibility of a formal entity for clients, vendors or lenders.
The conversion process varies by state, so check your state’s rules or consult a tax advisor before making the change.
FAQ
What is the difference between a sole proprietorship and an LLC?
A sole proprietorship is not a separate legal entity — you and the business are one, which means unlimited personal liability. An LLC is a separate legal entity that shields your personal assets from business debts and lawsuits.
What is a sole proprietorship example?
A freelance graphic designer, an independent tutor, a landscaping business run by one person, or an Etsy seller — any one-owner, unincorporated business.
Do sole proprietors pay taxes?
Yes. Business profit is taxed as your personal income (Form 1040 + Schedule C), plus self-employment tax of about 15.3% on net earnings.
Can a sole proprietorship have employees?
Yes — but once you hire, you need an EIN and must withhold payroll taxes and follow labor laws.
What are the four types of business?
The four common business structures are the sole proprietorship, the partnership, the limited liability company (LLC), and the corporation (C corporation). They differ mainly in liability protection, taxes, and paperwork — a sole proprietorship is the simplest, a corporation the most formal.
Is a sole proprietorship a good idea for a small business?
For low-risk, low-overhead work — freelancing, consulting, simple services — it is the fastest, cheapest way to start. For anything with meaningful liability, debt or employees, an LLC is usually the safer choice.
Conclusion
A sole proprietorship is the simplest path into business: no formation paperwork, pass-through taxes on your personal return, and total control. The price of that simplicity is unlimited personal liability and self-employment tax on every dollar of profit.
Use it to start fast and cheap. Track your money from day one, get the licenses your industry requires, and the moment the business has real assets, employees or liability exposure, move to an LLC. That two-step path — start as a sole proprietor, upgrade when it earns it — is how most one-person businesses grow up.
If you are starting small alongside a main job, see what is a side hustle and how to start one in 7 steps.
For the next step, see our guide to what is an LLC.
For free, confidential help with your plan, finances and funding preparation, see our guide to a small business development center.
For the full step-by-step process, see our guide on how to start up a company.