What Is a Corporation? Types and How to Form One

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A corporation is a legal entity created under state law that is separate from the people who own it. As its own legal “person,” a corporation can own property, sign contracts, borrow money, sue and be sued, and pay taxes in its own name. Its owners, the shareholders, hold shares of stock, and their losses are generally limited to what they invested.

How a corporation works

In the U.S., corporations are created and governed by state law, so the rules depend on the state of incorporation. A corporation formed in one state can operate in others, but it typically has to register there as a “foreign” corporation.

Ownership and control are split across three groups:

1. Shareholders own the company through their shares. They typically receive one vote per share and elect the board of directors, usually at an annual meeting. They benefit from dividends and from any rise in the value of their stock.
2. The board of directors oversees the corporation, approves major decisions, and hires and supervises senior management. Directors owe the corporation fiduciary duties, including a duty of care and a duty of loyalty, and can be held responsible if they breach them. Some tax laws can also make directors or officers personally liable for certain unpaid corporate obligations, such as payroll taxes withheld from employees.
3. Officers, such as the CEO and CFO, manage day-to-day operations within the authority the board gives them.

In a small company, one person may hold all three roles. The roles still matter legally, because decisions must be made and documented in the right capacity.

Because the corporation exists separately from its owners, it has perpetual existence. Shares can be sold, inherited or transferred, and the company continues, which is a key reason corporations can raise money by selling stock to outside investors.

A corporation may have one shareholder or millions. A private (closely held) corporation has a limited number of owners, and its shares do not trade on an exchange. A public corporation sells shares to the general public and is also regulated at the federal level by the Securities and Exchange Commission (SEC), which requires ongoing public disclosure of financial results and material information.

Types of corporations

• C corporation: The default for-profit form. It is taxed as a separate entity, filing its own federal return (Form 1120), can have unlimited shareholders, and can issue multiple classes of stock. Most large public companies are C corporations.
• S corporation: A corporation that elects S status with the IRS. Profits and losses pass through to shareholders’ personal returns, so the corporate-level tax is generally avoided, and the corporation files only an informational return. Eligibility is restricted: no more than 100 shareholders, only one class of stock, and shareholders must generally be U.S. citizens or residents (with limits on entity owners).
• Nonprofit corporation: Organized for charitable, educational, religious or similar purposes. It does not distribute profits to owners and may qualify for tax-exempt status.
• Professional corporation (PC): Used in many states by licensed professionals such as doctors, lawyers or accountants. It typically does not shield a professional from liability for their own malpractice.
• Benefit corporation: A for-profit corporation, available in many states, that formally commits to a public benefit alongside profit.

Name suffixes signal the structure. In the U.S., “Inc.” (incorporated) and “Corp.” (corporation) are common. In the U.K., Ireland and Canada, companies often use “Ltd.” (limited), and larger public companies in the U.K. use “PLC” (public limited company).

How to form a corporation

The details vary by state, but the basic sequence looks like this:

1. Choose a name. It must be available in your state and usually must include “Corporation,” “Incorporated” or an abbreviation.
2. Appoint a registered agent with a physical address in the state to receive legal papers for the corporation.
3. File articles of incorporation (a certificate of incorporation or charter in some states) with the secretary of state and pay the filing fee. The filing typically lists the name, registered agent, number of authorized shares and incorporators.
4. Adopt bylaws covering how directors are elected, how meetings work, officer roles and voting procedures.
5. Hold an organizational meeting and issue stock. The initial board appoints officers, adopts bylaws and authorizes shares for the founders.
6. Get an employer identification number (EIN) from the IRS to file taxes, hire employees and open business bank accounts.
7. Obtain licenses and permits for your industry and location, and file an S corporation election if you want that tax treatment.

After formation, ongoing compliance usually includes annual reports to the state, annual shareholder and board meetings, minutes and separate financial records.

Example: how corporate double taxation works

Hypothetical example; the tax rates are assumptions chosen to show the mechanics, not current law.

Suppose a C corporation earns $100,000 in taxable profit. Assume a 20% corporate tax rate and a 15% tax rate on dividends for the shareholder.

• Corporate tax: $100,000 × 20% = $20,000, leaving $80,000.
• The corporation pays out the full $80,000 as dividends.
• Shareholder tax: $80,000 × 15% = $12,000.
• The shareholder keeps $68,000.

Total tax on the $100,000 is $32,000, a combined rate of 32% under these assumptions. Through an S corporation, the same profit would be taxed once on the owner’s personal return at their individual rate. Whether that is lower depends on the owner’s tax bracket, state taxes and how much profit the company retains. A C corporation that reinvests earnings instead of paying dividends defers the second layer of tax.

Advantages and limitations

Advantages

• Limited liability: Shareholders’ personal assets are generally protected from corporate debts and lawsuits.
• Access to capital: Selling shares raises money without debt, and public companies can tap capital markets.
• Continuity: The company survives ownership changes or a founder’s death.
• Recruiting tools: Stock options and equity grants help attract and keep employees.
• Credibility: Some lenders, investors and partners prefer an incorporated entity.

Limitations

• Double taxation for C corporations, as shown above.
• Costs and formalities: Filing and registered agent fees, annual reports, and legal and accounting work add up, and boards, meetings, minutes and separate records are required.
• Disclosure burden: Going public brings SEC reporting, audits and scrutiny.
• Liability protection is not absolute. Courts can “pierce the corporate veil” and hold owners personally liable when the corporation is used for fraud, is badly undercapitalized, or mixes corporate and personal funds. Owners also remain liable for debts they personally guarantee and for their own wrongful acts.

Corporation vs. business, sole proprietorship and LLC

A business is any commercial activity, and a corporation is one legal form it can take. Many businesses are never incorporated, and some corporations, such as charities, are not profit-seeking businesses.

A sole proprietorship is not a separate entity. The owner and the business are legally the same, so the owner is personally responsible for every business debt. A partnership works similarly for its general partners.

A limited liability company (LLC) also offers limited liability but with more flexibility. By default it is a pass-through entity, so profits and the tax on them flow to the owners, and it needs no board of directors, annual meetings or bylaws, though an operating agreement is advisable. Corporations have a fixed governance structure and issue stock, which makes them easier to use for outside equity investment and public listings.

How a corporation ends: dissolution and liquidation

A corporation ends through dissolution and liquidation. In a voluntary process, the board and shareholders decide to close, file articles of dissolution with the state, and wind down. A liquidator or the company itself sells the assets, pays creditors in order of priority, and distributes anything left to shareholders, who are last in line.

An involuntary liquidation is driven by creditors of a corporation that cannot pay its debts, typically through bankruptcy proceedings. Shareholders usually lose only their investment.

The Bottom Line

Founders weighing a corporation against an LLC or sole proprietorship gain limited liability, continuity and an easier path to outside equity investment. In return they face formation filings, annual reports, required meetings and separate records, plus possible double taxation as a C corporation. An S election can avoid the corporate-level tax for eligible owners, and keeping finances separate helps preserve liability protection.