C-Corpの設立

Detailed explanation of C-Corpの設立 based on official information from 各州州務長官事務所・IRS. Work Visa Applications

Published: January 12, 2026

C Corporation (C-Corp) Business Formation in the United States

1. Overview

A C Corporation (C-Corp) is a legal business structure that is recognized as a separate taxable entity from its owners (shareholders) under U.S. law. It is the most common and standard type of corporation. The "C" designation comes from Subchapter C of the Internal Revenue Code, which details its federal income tax treatment. The primary importance of forming a C-Corp lies in its ability to provide strong liability protection for its shareholders, its unlimited potential for growth through the sale of stock, and its perpetual existence, meaning the company continues to exist even if ownership changes. This structure is fundamental for businesses planning to raise significant capital from venture capital firms, go public on a stock exchange, or attract a large number of investors.

2. Applicable Objects & Scenarios

The C-Corp structure is most applicable to:

  • Startups and High-Growth Companies: Especially those seeking venture capital or angel investment, as investors typically prefer to invest in C-Corps.
  • Companies Planning to Go Public (IPO): A C-Corp is the required structure for listing shares on major U.S. stock exchanges.
  • Medium to Large Businesses: Companies that have outgrown simpler structures (like LLCs or S-Corps) due to their number of shareholders, types of shareholders, or need for complex capital structures.
  • Businesses with International Operations: C-Corps can have foreign shareholders, which is not permitted for S-Corporations.
  • Companies that Want to Reinvest Profits: C-Corps can easily retain earnings within the company to fund future growth without passing the tax liability to shareholders.

3. Core Conclusions

  • Separate Legal Entity: A C-Corp provides the strongest personal liability protection, shielding shareholders' personal assets from business debts and lawsuits.
  • Double Taxation: A key characteristic is that profits are taxed at the corporate level, and then dividends distributed to shareholders are taxed again at the individual level.
  • Unlimited Shareholders and Capital: There are no restrictions on the number or type (individuals, entities, foreigners) of shareholders, facilitating easier capital raising.
  • Formal Structure Required: C-Corps require adherence to formalities like adopting bylaws, issuing stock, holding annual meetings, and maintaining detailed records.
  • Perpetual Existence: The corporation continues indefinitely, regardless of changes in ownership or management.

4. Procedures & Steps

Forming a C-Corp is a state-level process, typically handled by the Secretary of State's office.

Step 1: Preparation

  • Choose a Business Name: Select a unique name that complies with your state's corporate naming rules (often requiring a corporate designator like "Incorporated," "Corporation," "Company," or an abbreviation). Conduct a name availability search on your state's Secretary of State website.
  • Appoint a Registered Agent: Designate a registered agent (an individual or business entity with a physical address in the state of incorporation) to receive legal and official documents on behalf of the corporation.
  • Prepare Corporate Documents: Draft Articles of Incorporation (sometimes called a Certificate of Incorporation). This foundational document typically includes the corporate name, purpose, registered agent details, number and type of authorized shares, and incorporator information.
  • Draft Corporate Bylaws: Create the internal rules governing the corporation's operations, including director and shareholder meeting procedures, officer roles, and voting rights.

Step 2: Application & Submission

  • File Articles of Incorporation: Submit the completed Articles of Incorporation to the appropriate state agency, usually the Secretary of State, along with the required filing fee. Fees vary significantly by state. Please verify with official sources for the exact fee in your chosen state.
  • Obtain an Employer Identification Number (EIN): Apply for a federal EIN from the IRS. This is a free process and is required for tax purposes, hiring employees, and opening bank accounts.
  • File Initial Reports/Licenses: Some states require an initial report or franchise tax registration. You must also obtain necessary business licenses and permits from federal, state, and local authorities.

Step 3: Review & Confirmation

  • Hold an Organizational Meeting: The initial board of directors should meet to adopt the bylaws, appoint officers, authorize stock issuance, and handle other startup tasks.
  • Issue Stock Certificates: Issue shares to the initial shareholders in exchange for their capital contribution (cash, property, or services).
  • Set Up Corporate Records: Create a corporate records book (or digital equivalent) to store the Articles of Incorporation, bylaws, meeting minutes, stock ledgers, and other important documents.
  • Open a Corporate Bank Account: Use your EIN and incorporation documents to open a dedicated business bank account, separating personal and corporate finances.

5. Frequently Asked Questions (FAQ)

Q1: What is the main disadvantage of a C-Corp? A: The primary disadvantage is double taxation. The corporation pays income tax on its profits at the federal corporate tax rate (currently a flat 21%). If profits are distributed to shareholders as dividends, those dividends are taxed again on the shareholders' personal income tax returns.

Q2: Can a C-Corp have just one owner? A: Yes, a C-Corp can be formed and operated by a single shareholder, who can also be the sole director and officer.

Q3: How is a C-Corp different from an S-Corp? A: The key differences are taxation and ownership restrictions. An S-Corp is a pass-through entity (avoiding double taxation) but is restricted to 100 or fewer shareholders who must be U.S. citizens or residents. A C-Corp faces double taxation but has no restrictions on the number or type of shareholders.

Q4: What are the ongoing compliance requirements for a C-Corp? A: Requirements vary by state but generally include filing an annual report, paying annual franchise taxes, holding annual shareholder and director meetings, maintaining detailed corporate minutes, and filing separate federal and state corporate income tax returns.

Q5: Do I need a lawyer to form a C-Corp? A: It is not legally required, but due to the complexity of corporate governance, securities laws (when issuing stock), and tax implications, consulting with a business attorney and a CPA is highly recommended.

Q6: In which state should I incorporate my C-Corp? A: You can incorporate in any state, even if your business is physically located elsewhere. Many companies choose Delaware or Nevada due to their well-developed corporate laws and court systems, but for most small to mid-sized businesses operating in one state, incorporating in your home state is simpler and more cost-effective.

6. Risks & Compliance

  • Formality Maintenance: Failure to observe corporate formalities (like holding meetings and keeping separate records) can lead to "piercing the corporate veil," where a court holds shareholders personally liable for corporate debts.
  • Tax Complexity: C-Corp taxation is complex. Misunderstanding deductions, depreciation, or payroll taxes can lead to significant penalties. Professional tax advice is crucial.
  • Cost: Formation fees, annual report fees, franchise taxes, and legal/accounting costs are generally higher for C-Corps than for simpler entities like LLCs.
  • Disclaimer: This article provides general information for educational purposes only and does not constitute legal, tax, or financial advice. Business formation involves significant legal and financial consequences. You should consult with qualified legal and accounting professionals before making any decisions regarding your business structure.

7. References & Sources

8. Related Topics

  • S Corporation (S-Corp)
  • Limited Liability Company (LLC)
  • Business Licenses and Permits
  • Employer Identification Number (EIN)
  • Corporate Bylaws
  • Registered Agent Services
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