An ownership entity is a legal structure that can hold property, sign contracts, and take on debt separately from the people who created it. The common forms are sole proprietorships, general and limited partnerships, limited liability companies, and C and S corporations. They differ in two ways that matter most: how the IRS taxes the income, and how much of your personal wealth is exposed if the business is sued or can’t pay its bills. Picking the wrong one can cost thousands in extra tax each year, or leave your house on the table in a lawsuit you thought the business would absorb.
The Main Types
A sole proprietorship is what you have by default when one person runs a business without filing any formation paperwork. The owner and the business are legally the same person. Every dollar of profit lands on the owner’s personal tax return, and every business debt is the owner’s personal debt. There is no liability shield. Freelancers and small side businesses usually start here because the simplicity is hard to beat when the risks are low.
A general partnership works the same way with two or more owners. Each partner is personally liable for the full amount of partnership debts, not just a proportional share. If one partner signs a contract the business can’t honor, the other partners’ personal assets are on the line too. A limited partnership adds a second tier: general partners run the business and carry full personal liability, while limited partners put in money, stay out of management, and risk only what they invested.
A limited liability company combines partnership flexibility with corporate-style liability protection. Ownership is measured in membership interests rather than shares of stock, and the members can arrange management and profit sharing however they want through an operating agreement. A single-member LLC is taxed as a sole proprietorship by default, and a multi-member LLC is taxed as a partnership, though either can elect to be taxed as a corporation instead.
Corporations divide ownership into shares of stock. A C corporation is its own taxpayer, paying a flat 21% federal income tax on its profits before any money reaches shareholders. An S corporation passes income through to shareholders’ personal returns and avoids that entity-level tax, but it comes with strict eligibility rules: no more than 100 shareholders, only one class of stock, and shareholders must generally be U.S. individuals rather than other businesses or foreign nationals.
How Each Type Is Taxed
Tax treatment is often the single biggest factor in the decision, and the IRS gives more flexibility here than most owners realize. Sole proprietorships and single-member LLCs are treated as “disregarded entities,” meaning their income flows straight to the owner’s Form 1040. Partnerships and multi-member LLCs file an informational return and pass profits and losses through to each owner on a Schedule K-1.1Internal Revenue Service. Limited Liability Company (LLC) None of these structures pay federal income tax at the entity level.
C corporations are the exception. The corporation pays a flat 21% tax on its profits.2Office of the Law Revision Counsel. 26 USC 11 – Tax Imposed When after-tax profits are distributed as dividends, the shareholders pay tax again on their individual returns. For high earners, the combined federal rate on distributed corporate profits can approach 40%. That is what people mean by “double taxation.” It sounds like a dealbreaker, and often is for small operations, but C corporations have no restrictions on who can own shares and can take advantage of tax provisions unavailable to pass-through entities.
S corporations sidestep double taxation. Income passes through and is taxed once on the shareholders’ individual returns. Owners who actively work in the business must pay themselves a reasonable salary subject to payroll taxes, but distributions above that salary are not subject to self-employment tax. That payroll tax saving is the main reason small business owners elect S corporation treatment. The cost is the eligibility ceiling: 100 shareholders maximum, one class of stock, and generally only U.S. citizen or resident individual shareholders.3Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
An eligible entity can change its default tax classification by filing Form 8832, the Entity Classification Election.4Internal Revenue Service. About Form 8832, Entity Classification Election An LLC can elect C corporation tax treatment with Form 8832, or S corporation treatment by combining Form 8832 with Form 2553. The state legal structure stays the same; only the federal tax label changes. Pass-through entities may also qualify for a deduction of up to 20% on qualified business income under Section 199A, which can noticeably reduce the effective tax rate for owners in eligible industries.5Internal Revenue Service. Qualified Business Income Deduction
What the Liability Shield Actually Protects
The other headline reason to form an entity is the liability shield. When you operate through an LLC or corporation, the entity’s debts and legal obligations belong to the entity, not to you. If the business gets sued or can’t pay a creditor, the claim reaches the entity’s assets but generally not your personal bank account, home, or other property. Sole proprietorships and general partnerships offer no such protection. The owners are personally on the hook for everything the business does.
The shield is not bulletproof. Courts can “pierce the corporate veil” and hold owners personally liable when the entity is really just a shell. The most common triggers are commingling personal and business funds, failing to keep the entity adequately capitalized for its operations, and using the entity to commit fraud. Skipping required formalities such as annual meetings, minutes, and a separate business bank account can weaken the protection too. When a court finds that the entity was never treated as genuinely separate from its owners, it treats the owners as if the entity didn’t exist.
Limited partners get liability protection only as long as they stay out of management. A limited partner who starts running daily operations can be reclassified as a general partner with full personal exposure. The principle runs across every entity type: protection exists only when you respect the boundary between yourself and the business.
How to Form One
Formation starts with a name that complies with your state’s rules. Most states require LLCs to include “LLC” or “Limited Liability Company” and corporations to include “Inc.,” “Corp.,” or a similar identifier. The name has to be distinguishable from anything already on file with the state, which usually takes a few minutes to check through the Secretary of State’s online database.
Every entity needs a registered agent, meaning a person or company designated to receive lawsuits and official notices for the entity. The registered agent must have a physical street address in the state of formation. A P.O. Box will not satisfy the requirement. Owners can serve as their own agent, or hire a commercial service to keep a home address off public records or handle multiple states.
The core formation document is called Articles of Organization for an LLC or Articles of Incorporation for a corporation. It gets filed with the Secretary of State or the equivalent office and typically lists the entity’s name, registered agent, and basic structural details. Some states ask for organizers or initial directors; others don’t require any owner names in the public filing. Filing fees range from under $50 to several hundred dollars depending on the state and entity type.
After the state approves the formation, most entities need an Employer Identification Number from the IRS. Partnerships, LLCs, and corporations all need an EIN to file taxes, open a business bank account, and hire employees. The IRS recommends completing state formation first to avoid processing delays. The online application is free and issues the EIN immediately.6Internal Revenue Service. Employer Identification Number It requires the Social Security number or taxpayer ID of the “responsible party,” the individual who controls the entity, and the IRS accepts only one EIN application per responsible party per day.
State processing runs from same-day online approval in some places to several weeks for paper filings in states with backlogs. Many states offer expedited processing for an extra fee. Once approved, you’ll get a stamped copy of the formation documents or a certificate confirming the entity is active and in good standing. Keep those records permanently, because banks, landlords, and licensing agencies will ask for them.
Keeping the Entity Alive
Formation is not a one-time event. Most states require LLCs and corporations to file an annual or biennial report with the Secretary of State, updating the address, registered agent, and current officers or managers. Filing fees range from nothing in a few states to several hundred dollars elsewhere. Miss the deadline and penalties start accumulating. Continued noncompliance puts the entity into “not in good standing” status, which can block filings, certificates, and government contract bids. Long enough, and the state administratively dissolves the entity, meaning it stops existing as a legal entity without the owners doing anything. Reviving one costs additional fees and paperwork, and any business conducted in the gap may have happened without liability protection.
About a dozen states also charge a franchise tax or privilege tax on entities doing business within their borders. It is separate from income tax and is based on net worth, gross receipts, or a flat annual fee. Some states charge a few hundred dollars; others impose minimums of $800 or more regardless of whether the business earned any revenue. Unpaid franchise tax can independently trigger administrative dissolution.
An entity formed in one state that operates in another generally has to “foreign qualify” in that second state. Activities that trigger the requirement include maintaining an office or warehouse, employing people there, owning or leasing property, or regularly soliciting business from customers in the state. Occasional sales or a trade show usually don’t cross the line, but the thresholds vary. Foreign qualification means filing an Application for Certificate of Authority, paying a fee, and appointing a registered agent in each additional state. Skipping it can lead to fines, back taxes, and loss of access to that state’s courts to enforce contracts.
Beneficial Ownership Reporting
The Corporate Transparency Act originally required most small businesses to report their beneficial owners to the Financial Crimes Enforcement Network. In March 2025, FinCEN issued an interim final rule exempting all entities formed in the United States from that reporting requirement. Only entities formed under a foreign country’s laws and registered to do business in a U.S. state or tribal jurisdiction remain subject to beneficial ownership information reporting, and FinCEN has stated it will not enforce reporting penalties against U.S. citizens or domestic companies.7Financial Crimes Enforcement Network. Beneficial Ownership Information Reporting This area has shifted repeatedly in a short period, so check FinCEN’s site before assuming the current rule still holds.
Closing the Entity
When it is time to shut down, you cannot simply stop operating and walk away. An entity that has not been formally dissolved continues to exist on state records, which means annual reports, franchise tax, and late fees keep accruing. It also remains a target for lawsuits and identity theft.
Dissolution starts with a vote. For an LLC, the operating agreement dictates how many members must approve. For a corporation, the board passes a resolution and shareholders vote to confirm. If the operating agreement or bylaws are silent, state defaults apply, ranging from a simple majority to unanimity.
After the vote, the entity files Articles of Dissolution (also called a Certificate of Dissolution or Certificate of Cancellation) with the Secretary of State. Some states require tax clearance from the state revenue department before accepting the filing. The entity also has to settle its debts, notify creditors, and distribute any remaining assets to the owners. Federal obligations don’t end automatically. File final returns with the IRS and formally close the EIN account. If the entity was registered to do business in other states, file withdrawal paperwork in each one. Loose ends left behind can resurface years later as tax bills, penalties, or legal liability the former owners assumed was behind them.