A proprietor is someone who owns and runs a business by themselves, without forming a separate legal entity like an LLC or corporation. This arrangement is called a sole proprietorship, and it’s the simplest way to operate a business in the United States. If you start freelancing, selling products, or offering services on your own without filing any formation paperwork with your state, you’re already a proprietor by default.
How a Sole Proprietorship Works
The defining feature of a sole proprietorship is that there’s no legal separation between you and your business. You own all the business assets personally, you’re entitled to all the profits, and you have full control over every decision. There’s no board of directors, no partners, no shareholders. It’s just you.
This structure kicks in automatically the moment you start doing business on your own. You don’t need to file formation documents with your state the way you would for an LLC or corporation. If you mow lawns for pay, tutor students on weekends, or sell handmade goods online, you’re operating as a sole proprietor unless you’ve formally created a different business entity.
What Unlimited Liability Means for You
Because there’s no legal wall between you and your business, you’re personally responsible for every debt and obligation the business takes on. If your business can’t pay a supplier, that supplier can come after your personal bank account, your car, or other assets you own. If someone sues your business and wins a judgment, your personal property is on the table.
This is called unlimited personal liability, and it’s the biggest risk of operating as a sole proprietor. Your business can’t own assets on its own, so everything tied to the business is legally your personal property. Every creditor of the business is effectively your personal creditor. For a low-risk side hustle, this may not keep you up at night. For a business that takes on debt, hires employees, or serves clients in ways that could lead to lawsuits, it’s a significant exposure.
How Proprietors Pay Taxes
A sole proprietorship doesn’t file its own tax return. Instead, all income and expenses flow directly onto your personal return. You report business profit or loss on Schedule C, which attaches to your Form 1040. If your business earns $80,000 and has $25,000 in expenses, you report $55,000 in net profit on Schedule C, and that amount gets added to any other income you have for the year.
On top of regular income tax, you owe self-employment tax on your net earnings. This covers Social Security and Medicare contributions that an employer would normally split with you. You calculate this using Schedule SE. Since no employer is withholding taxes from your earnings, the IRS expects you to make quarterly estimated tax payments throughout the year using Form 1040-ES. If you wait until April to pay everything at once, you’ll likely owe a penalty for underpayment.
A few other forms come into play depending on your situation. If you use part of your home exclusively for business, Form 8829 lets you deduct a portion of your housing costs. If you buy equipment or other business property, Form 4562 handles depreciation deductions. And if you receive more than $10,000 in cash from a single transaction or related transactions, you’re required to report it on Form 8300.
Setting Up a Sole Proprietorship
There’s no formal creation step. You become a sole proprietor simply by conducting business. That said, a few practical steps will keep you compliant and make your business easier to manage.
- Business name registration: If you want to operate under a name other than your own legal name, you’ll need to file a “Doing Business As” (DBA) registration, sometimes called a trade name or fictitious name filing. This is typically done through your county clerk’s office or secretary of state, depending on where you live. Fees vary but are generally modest.
- Licenses and permits: Many types of businesses need federal, state, or local licenses. A food business needs health permits. A contractor may need a state license. Check with your city or county clerk’s office and your state’s business licensing agency to find out what applies to you.
- Tax registration: If you plan to sell taxable goods or services, you’ll likely need a state sales tax permit. If you hire employees, you’ll need an Employer Identification Number (EIN) from the IRS, plus you’ll file quarterly payroll tax returns on Form 941 and annual unemployment tax returns on Form 940.
- Separate bank account: Legally, your personal and business funds are the same. Practically, keeping a separate checking account for business income and expenses makes bookkeeping far easier and gives you cleaner records at tax time.
How It Differs From an LLC
The most common next step up from a sole proprietorship is a single-member LLC. An LLC is a separate legal entity that you create by filing paperwork with your state and paying a formation fee. State filing fees range from about $35 to $500. Once formed, the LLC owns the business, not you personally.
That separation is the key difference. If your LLC takes on a debt or gets sued, creditors generally can only go after the assets inside the LLC, not your personal savings or home. Your personal liability is limited to what you’ve invested in the business. A sole proprietorship offers no such protection.
From a tax perspective, a single-member LLC is treated the same as a sole proprietorship by default. You still file Schedule C and pay self-employment tax. The difference is legal protection, not tax treatment. For many small business owners, forming an LLC is worth the filing fee and annual maintenance just for that liability shield.
Who Typically Operates as a Proprietor
Sole proprietorships are most common among freelancers, independent consultants, gig workers, tutors, handypeople, artists, and anyone running a one-person operation with relatively low risk. The appeal is simplicity: no formation fees, no annual state filings for the entity itself, no operating agreements, and straightforward taxes. If you’re testing a business idea or earning modest side income, a sole proprietorship lets you start immediately with almost no administrative overhead.
As a business grows, takes on more financial risk, or starts hiring employees, many proprietors choose to transition to an LLC or corporation. But for millions of Americans, operating as a sole proprietor is a perfectly functional way to run a small business.