LLC, Corporation vs Sole Proprietorship Compared

A sole proprietorship is an unincorporated business you own by yourself. An LLC is a state-registered entity you form on purpose. Here is how they differ.

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Filed 2026-10-18

The IRS says legal and tax considerations both shape your choice of business structure. It lists four common forms. These are the sole proprietorship, partnership, corporation, and S corporation. The LLC sits alongside them as a state-created option. Here is how the LLC, corporation and sole proprietorship compare, and when each one makes sense.

What a sole proprietorship is

The IRS says a sole proprietor owns an unincorporated business by themselves.

The SBA guide adds a key point. A sole proprietorship does not create a separate business entity. You and the business are the same thing in the eyes of the law.

That has two sides. The SBA says a sole proprietorship is easy to form and gives you complete control of your business. It also means the business has no legal life apart from you.

You can still use a business name. The SBA says sole proprietors are able to get a trade name. So working alone does not force you to put your own name on the sign.

What an LLC is

The IRS says a Limited Liability Company is a business structure allowed by state statute. You form one by filing papers with a state, and most states also permit single-member LLCs, those having only one owner.

New York's guide calls the LLC a hybrid form. It mixes limited liability, like a corporation, with the bend of a partnership. The owners of an LLC are called members rather than shareholders or partners.

Forming an LLC takes a few documents. The SBA guide calls the articles of organization a simple document. It lists the company name, address, member names, and the registered agent. An LLC may also have an operating agreement. The SBA says it sets how key business decisions get made. It also lists each member's duties, powers, and responsibilities.

A corporation is the other choice you must form on purpose. It is its own entity too, with shareholders and its own tax rules. The SBA notes that designations like S corp and nonprofit are not strictly business structures. They can also be a tax status. The SBA says an LLC can be taxed as a C corp, S corp, or a nonprofit. That last point matters later.

Liability: the biggest difference

This is where the structures split. The SBA's guide says an LLC or corporation status can protect your personal property from lawsuits, but that protection has limits.

A sole proprietorship offers no such shield. An LLC puts a state-recognized wall between the two.

That wall is not absolute. The SBA says the protection has limits, so treat it as a real but bounded thing. New York's guide goes further and says forming an LLC should only be done after careful analysis, not as a reflex.

Taxes: how each structure is taxed

The IRS says your form of business determines which income tax return form you have to file. Sole proprietors use Schedule C to report profit or loss from the business. It goes right on the personal return.

The SBA says LLC profits and losses can get passed through to your personal income without facing corporate taxes. The Franchise Tax Board gives the default rules. An LLC with only one member is a disregarded entity for federal purposes. An LLC with more than one owner is a partnership.

The difference is that an LLC can elect something else. As noted above, the SBA says an LLC can be taxed as a C corp, S corp, or a nonprofit. If that election interests you, read about an LLC versus an LLC taxed as an S corp.

Self-employment tax is one cost to plan for. The SBA says LLC members count as self-employed. They must pay self-employment tax for Medicare and Social Security. For how the IRS treats LLCs, see LLCs and the IRS.

Cost and paperwork to set up

The SBA says to choose a business structure before you register your business with the state. Most businesses also need a tax ID number. Most also need to file for licenses and permits. You can read about the business license and getting an EIN from the IRS separately.

An LLC adds a state filing on top. You file articles of organization with the state. See the state filing fee for an LLC for fees in some states.

The SBA also warns that the rules vary by state. Ownership rules, liability, taxes, and filing requirements can all differ. Check your own state's rules before you file.

Raising money and control

The sole proprietorship wins on control. The SBA says it gives you complete control of your business. No members, no operating agreement, no one else with a vote.

Raising money is harder for a sole proprietorship. The SBA says it can be hard for a sole proprietorship to raise money because you cannot sell stock.

There is one more wrinkle. The SBA says LLCs can have a limited life in many states.

Which one should you choose

The SBA gives a clear signal for the simplest case. The SBA says a sole proprietorship can be a good choice for low-risk businesses. It also suits owners who want to test their business idea. If you are trying an idea out and the downside of a lawsuit is small, the default is fine.

An LLC matters more when your personal assets are exposed. Then the SBA's point matters. LLC or corporation status can protect your personal property.

The SBA says business counselors, attorneys, and accountants can help. A choice this size is a good time to ask them. See should you form an LLC for more on that choice.

Can you switch later

Yes, with care. The SBA says you may convert to a different business structure later. Your location may set limits on that.

The SBA also says a switch could bring tax problems. It could even dissolve the company by accident. So a switch is possible but not free. Test the idea as a sole proprietor, and if it works, form the LLC before the risk grows.