What is a C corporation?
A corporation is a legal entity owned by shareholders, overseen by a board of directors and run day to day by officers. One person can hold all three roles. "C corporation" is a tax term: every corporation is taxed under Subchapter C of the tax code unless it elects S corporation status. So forming a corporation with a state gives you a C corporation automatically. See LLC vs S corp vs C corp.
How do you form one, step by step?
Choose the state and name
Usually your home state, or Delaware if you plan to raise venture capital.
Appoint a registered agent
With a physical address in the state of incorporation.
File the articles of incorporation
They set the name, the registered agent and the authorized shares.
Adopt bylaws and appoint directors
The board then appoints the officers.
Issue stock to the founders
Record each issue in a stock ledger.
Get an EIN and a bank account
Then register for state taxes and payroll.
What goes in the articles of incorporation?
- The corporation's name, with an ending such as "Inc.", "Corp." or "Corporation".
- The registered agent and registered office.
- The number of shares the corporation is authorized to issue, their classes and any par value.
- The incorporator, who signs and files the document.
Some states also ask for the first directors or the business purpose. The articles are public. The bylaws, which set out how the corporation is run, are not filed.
How many shares should you authorize?
Enough for the founders, future employees and investors, without creating a needless cost. In some states the number of authorized shares affects fees or taxes. Delaware is the best-known example: its default franchise tax calculation is based on authorized shares. See Delaware C corp for startups. A small family business might authorize a few thousand shares. A startup expecting investors usually authorizes millions.
What happens at the first board meeting?
The directors, meeting or acting by written consent, adopt the bylaws, appoint officers, approve the issue of stock to the founders, adopt a fiscal year, and authorize a bank account. Keep the signed minutes or consents with the corporate records. Founders pay for their shares, in cash or by assigning property such as intellectual property, and the corporation records the issue.
What is an 83(b) election?
If founders' shares vest over time, the default rule taxes them as the shares vest, on the value at that point. An 83(b) election lets a founder choose to be taxed at the time of the grant instead, when the value is usually very low. It must be filed with the IRS within 30 days of receiving the shares, and the deadline cannot be extended. The IRS provides Form 15620 for the election.
How is a C corporation taxed?
It pays federal income tax at a flat 21% on its profit, on Form 1120. Salaries it pays, including to owners who work in the business, are deductible. Dividends are paid from after-tax profit and taxed again in shareholders' hands. A corporation that qualifies can elect S status within 2 months and 15 days of the start of its tax year. See Form 2553.
What must a corporation keep up?
- Annual shareholder and board meetings, or written consents, with minutes.
- A stock ledger showing who owns which shares.
- The state's annual report and any franchise tax.
- Form 1120 each year, and estimated tax if it expects to owe $500 or more.
- Registration in other states where it does business. See registering in another state.
C corporation or LLC?
A C corporation suits businesses that will raise money from investors, grant stock options or reinvest most of their profit. An LLC suits owners who want simpler upkeep and a single layer of tax. Founders living outside the US should also read LLC or C corp for a foreign founder.
Want your corporation set up properly?
We file the articles, prepare bylaws and first resolutions, record the founders' stock, get the EIN and set up your yearly filings.
Questions people ask
How do I form a C corporation?
File articles of incorporation with a state, adopt bylaws, appoint directors and officers, issue stock to the founders and get an EIN.
Is a new corporation automatically a C corporation?
Yes. A corporation is taxed as a C corporation by default unless it elects S status on Form 2553.
What is the difference between articles of incorporation and bylaws?
The articles are the public document filed with the state that creates the corporation. The bylaws are its internal rules and are not filed.
What is the C corporation tax rate?
A flat 21% of taxable income at the federal level, plus any state corporate tax.
Sources
Every fee, date and rule on this page was taken from these official and primary sources.
- IRS: Instructions for Form 1120 (2025)
- IRS: Instructions for Form 2553
- IRS: Form 15620, Section 83(b) Election (October 2024)
- Internal Revenue Code section 83: property transferred in connection with the performance of services
- Internal Revenue Code section 11: 21% corporate tax rate
- Delaware Division of Revenue: franchise tax
Rules and fees change. If you are reading this long after October 1, 2026, confirm the figures with the source before you rely on them.
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This guide is general information. It is not tax or legal advice for your situation.