Sole Proprietorship vs. LLC vs. Corporation

The Three Structures at a Glance

Liability Protection

A sole proprietorship has no legal separation between the owner and the business, so the owner's personal assets, a home, savings, or other property, can be used to satisfy business debts or a lawsuit judgment. An LLC and a corporation are both separate legal entities, and in most instances their owners aren't personally liable for the entity's debts beyond what they invested, as long as the business keeps its own bank account, doesn't mix personal and business funds, and follows its operating agreement or bylaws.

How Each Structure Is Taxed

A sole proprietorship reports business income directly on the owner's personal tax return using Schedule C, paying self-employment tax on the profit. An LLC is taxed the same way by default, a single-member LLC like a sole proprietorship and a multi-member LLC like a partnership, unless it elects corporate or S corporation taxation instead. A C corporation pays corporate income tax on its own profits, and shareholders pay personal tax again on any dividends, commonly called double taxation; an S corporation election, available to an eligible corporation or LLC, passes income through to owners' personal returns instead, while requiring owner-employees to be paid a reasonable salary through payroll.

Ownership and Control

A sole proprietorship has exactly one owner, with no formal management structure required. An LLC can have one or more members, managed directly by its members or by an appointed manager under an operating agreement. A corporation is owned by shareholders, directed by a board of directors, and run day to day by officers, which adds more required paperwork, bylaws, board resolutions, and annual meetings, than an LLC typically needs. A corporation generally also has no cap on the number of shareholders and can issue multiple classes of stock, unlike an S corporation election, which caps shareholders at 100 and requires a single class of stock.

Cost and Paperwork to Form Each

A sole proprietorship using the owner's own legal name typically requires no state formation filing, though a different business name usually needs a DBA filing. An LLC files Articles of Organization and a corporation files Articles of Incorporation, both with the state's Secretary of State; state filing fees vary widely, from $35 in Montana to $500 in Massachusetts. An EIN from the IRS is free regardless of structure. An LLC typically drafts an operating agreement, not usually filed with the state; a corporation adopts bylaws and holds an organizational board meeting, adding setup time a sole proprietorship doesn't need.

Which Structure Tends to Fit Which Business

A sole proprietorship often fits someone testing an idea with minimal risk and no employees. An LLC fits a business that wants liability protection without a corporation's formal management structure, which covers most small, owner-operated businesses. A corporation fits a business planning to raise outside investment from venture capital or issue employee stock options, since investors are generally more familiar with corporate stock structures than LLC membership interests.

Moving Between Structures Later

It's common to start as a sole proprietorship or single-member LLC while testing an idea, then convert to a corporation once the business needs outside investors or a co-founder with equity. Most states allow a statutory conversion from an LLC to a corporation through a state filing, and the IRS treats an LLC's election to be taxed as a corporation (Form 8832) as a separate step from that state-level conversion.

Liability Protection Depends on How the Business Is Actually Run

Forming an LLC or corporation doesn't automatically protect personal assets if the owner treats the entity's bank account like a personal one or ignores its own formalities. Courts can disregard the liability shield, a concept known as piercing the corporate veil, when an entity isn't run as genuinely separate from its owner.

Industry Licensing Applies Regardless of Structure

Choosing a sole proprietorship, LLC, or corporation doesn't replace any professional or industry license your field requires. Check your state's licensing boards in addition to picking an entity type.

A Corporation's Formalities Aren't Optional in Practice

Bylaws, board meetings, and resolutions aren't just paperwork; banks, courts, and investors expect to see them followed, and skipping them can undermine the very liability protection a corporation is meant to provide.

This Is Not Legal or Tax Advice

Which structure fits best depends on liability exposure, tax situation, and growth plans specific to your business. Talk to a tax professional or attorney before finalizing a structure, particularly with multiple owners or outside investors involved.

Operating in More Than One State Adds a Step for Any Entity

An LLC or corporation operating outside the state where it was formed generally needs to register there too, as a foreign entity, with its own fee and registered agent. A sole proprietorship doesn't have an equivalent state-to-state registration process, though local licensing still applies wherever it operates.