To open a C corp, you file a charter document called the articles of incorporation with a state agency (usually the secretary of state), get an Employer Identification Number from the IRS, and then hold an organizational meeting where you adopt bylaws, elect officers, and issue stock. The whole sequence can take anywhere from a few hours to several weeks depending on the state and how fast you move. Before you start, know the tax trade-off: a C corporation pays federal income tax at a flat 21 percent on its profits, and shareholders pay tax again when those profits come out as dividends.1GovInfo. 26 U.S.C. 11 – Tax Imposed That double layer is the defining feature of the structure, and it shapes every decision below.
Pick the State Where You Will Incorporate
You can incorporate in any state, regardless of where you actually operate. Most small businesses incorporate in their home state because it is simpler and cheaper. If you incorporate somewhere else, you still have to register as a foreign corporation in every state where you have a physical presence, employees, or significant activity, which means paying a second set of fees and keeping a registered agent in each of those states.
Delaware is the common alternative. It offers a well-developed body of corporate case law, a specialized business court (the Court of Chancery), and statutes that give boards wide flexibility. Venture capital investors and companies planning to go public often prefer Delaware for that predictability. The cost side is the Delaware franchise tax, which runs from $175 to $200,000 per year depending on how many shares you authorize and the calculation method you choose. For a founder who does not need sophisticated governance or institutional investors, that premium rarely pays for itself.
If you do incorporate out of state, plan on foreign-qualifying back home. Operating in a state without proper registration can block you from filing lawsuits in its courts and expose you to daily civil penalties. Foreign qualification fees typically range from $70 to $750.
Choose and Clear a Corporate Name
Your name must be distinguishable from other entities already on file in the state where you incorporate. Every state keeps a searchable business-name database, and checking it before filing avoids a rejection. Most states also require a corporate designator in the name, such as “Corporation,” “Incorporated,” “Limited,” or an abbreviation like “Corp.” or “Inc.,” so the public can tell they are dealing with a corporation.
Clearing the state database does not clear federal trademark conflicts. A name that passes the secretary of state’s filter can still infringe a registered mark and force an expensive rebrand later. A quick search of the U.S. Patent and Trademark Office database before you commit is worth the few minutes.
File the Articles of Incorporation
The articles of incorporation (called a “certificate of incorporation” in some states) is the document that legally creates the company. Requirements vary, but almost every state asks for the same core items:
- Corporate name, with the required designator.
- Registered agent name and physical street address.
- Total authorized shares and, in most states, their par value.
- Incorporator name and address.
- Corporate purpose, though most states accept a broad “any lawful activity” clause.
Most states let you file online through the secretary of state’s website, with faster turnaround and near-instant confirmation. Some still accept or require paper filings by mail, usually with a signed original and a copy. Filing fees run roughly $40 to $300 in most states, and a few charge more. Some states tie part of the fee to the number of authorized shares or stated capital, so an unusually large authorization can push the cost up.
Standard processing takes anywhere from a few business days to several weeks. Nearly every state offers expedited processing for an additional $100 to $1,000 or more, with turnaround as fast as one hour. If you have a lease to sign or a funding round to close, expedited is usually worth it.
Once the state approves the filing, you will receive a stamped or certified copy. Keep it. Banks, insurers, and other service providers will ask to see it before opening accounts or issuing policies, and ordering a few extra certified copies during the initial filing saves time later.
Authorized Shares and Par Value
Authorized shares set the ceiling on how much equity you can issue without amending the charter. Many founders authorize a large number of shares at a very low par value, such as $0.0001 per share, so there is room for future grants to co-founders, employees, and investors. Par value is a floor price below which shares cannot be issued, but in practice it mostly functions as a variable in franchise tax calculations.
That is where share count and par value hit your wallet. Several states calculate annual franchise tax based on authorized shares or total par value of authorized capital. Ten million shares at $1.00 par can produce a dramatically higher bill than ten million shares at $0.0001. Model the cost at your proposed share count before you fill in those blanks.
Common and Preferred Stock
If you plan to raise outside investment, authorize at least two classes of stock in the articles: common and preferred. Common is what founders and employees typically hold. Preferred is what investors receive, with negotiated terms like liquidation preference or anti-dilution. You do not have to spell out every term of a preferred class at incorporation, but authorizing the class now avoids a later amendment.
Appoint a Registered Agent
Every state requires the corporation to have a registered agent with a physical street address in the state of incorporation. A P.O. box does not qualify, because the agent must be available during business hours to accept hand-delivered legal papers. The agent can be you, another officer, or a commercial service.
A third-party service costs roughly $50 to $300 per year. It keeps your home address off the public record and makes sure someone is reliably available to accept service of process. If you serve as your own agent and miss a delivery, you may not learn about a lawsuit until a default judgment has already been entered.
Get an Employer Identification Number
An EIN is a nine-digit tax ID the IRS assigns to the corporation. You need one before you can open a bank account, file tax returns, or hire anyone. The fastest route is the free online application on the IRS website, which issues the number immediately on approval.2Internal Revenue Service. Get an Employer Identification Number The online tool is available if the responsible party has a valid Social Security Number or Individual Taxpayer Identification Number.
If online is not an option, you can apply by fax, phone, or mail using Form SS-4.3Internal Revenue Service. About Form SS-4, Application for Employer Identification Number (EIN) Fax usually takes about four business days; mail can take four to six weeks. Whichever method you choose, make sure the entity name and address match exactly what you filed in the articles. Mismatches between IRS and state records create problems when you try to open bank accounts or file returns.
Hold the Organizational Meeting
Once the state returns the filed articles and you have the EIN, the incorporator calls the initial organizational meeting. This is where the corporation starts functioning as an entity. The standard agenda covers:
- Adopting bylaws, the internal rulebook covering how often the board meets, how votes are conducted, and what authority officers have. Bylaws are not filed with the state.
- Electing officers. The board appoints at minimum a president (or CEO), secretary, and treasurer. In many states one person can hold all three roles, which is common for solo founders.
- Authorizing bank accounts through a board resolution that names which officers can open accounts and sign checks. Banks will ask for a copy.
- Issuing stock. The board approves the sale of shares to the initial founders and any early investors in exchange for cash, property, or services.
Record every decision in formal minutes and keep them in a corporate minute book, whether a physical binder or a digital folder. Minutes, signed bylaws, the stock ledger, and copies of filed documents all belong in that central record. For a closely held corporation, consider a shareholder agreement with a buy-sell clause as well, so a departing shareholder cannot sell their stake to an outsider the other founders have never met.
Protect the Corporate Veil From Day One
The point of forming a corporation is limited liability: your personal assets are shielded from business debts. Courts can “pierce the corporate veil” and reach your personal assets if you treat the corporation like a personal account instead of a separate entity. The common triggers are mixing personal and business funds, skipping annual meetings and minutes, and starting the business with obviously insufficient capital.
The fix is simple and worth building in from the start. Keep a dedicated bank account. Never pay personal expenses from corporate funds. Hold at least an annual board meeting with recorded minutes. Make sure the corporation has enough capital for its foreseeable obligations. These habits cost almost nothing to maintain and are far cheaper than defending a veil-piercing claim later.
Handle Securities Compliance When You Issue Stock
Even a small private corporation is issuing securities when it hands out stock, and federal and state securities laws apply. Most new corporations rely on an exemption from SEC registration rather than going through full public registration. Regulation D provides the most common exemptions:
- Rule 504 allows sales of up to $5 million to an unlimited number of purchasers, with lighter disclosure requirements than larger offerings.4eCFR. 17 CFR 239.500 – Form D
- Rule 506(b) has no dollar cap, but you cannot use general advertising and can sell to no more than 35 non-accredited investors.
- Rule 506(c) also has no dollar cap and permits general advertising, but every purchaser must be a verified accredited investor.
Whichever exemption you use, you must file a Form D notice with the SEC no later than 15 calendar days after the first sale of securities in the offering.5U.S. Securities and Exchange Commission. Frequently Asked Questions and Answers on Form D There is no filing fee, and the filing goes through the SEC’s EDGAR system. State securities laws (“blue sky laws”) add a separate layer; many states require a notice filing or registration for securities sold to their residents even when a federal exemption applies. Specifics vary enough that having a securities attorney review your first stock issuance is one of those expenses that consistently pays for itself.
Understand the Tax Picture Before You File
A C corporation pays federal income tax at a flat 21 percent on its taxable income.1GovInfo. 26 U.S.C. 11 – Tax Imposed When the corporation distributes those after-tax profits as dividends, shareholders pay personal tax on the dividends.6Internal Revenue Service. Forming a Corporation Qualified dividends are taxed at 0, 15, or 20 percent depending on the shareholder’s bracket, with a potential additional 3.8 percent net investment income tax for high earners.
A calendar-year C corporation files Form 1120 by April 15 of the following year, with an automatic extension available by filing Form 7004 by the original due date.7Internal Revenue Service. Publication 509 (2026), Tax Calendars8Internal Revenue Service. 2025 Instructions for Form 1120 The extension buys time to file, not time to pay. Even if the corporation had no revenue in year one, you still have to file a zero-income return.
If the double layer does not work for your situation, you can form the C corporation and then elect S corporation status by filing Form 2553. An S corp passes income through to shareholders, who report it on their personal returns, which eliminates the corporate-level tax. The election must be filed no later than two months and 15 days after the start of the tax year you want it to take effect, so March 15 for a calendar-year corporation. Not every corporation qualifies: S corps are capped at 100 shareholders, cannot have foreign shareholders, and may issue only one class of stock. If you plan to raise venture capital, S corp status usually will not work because investors expect preferred stock.
Keep the Corporation in Good Standing
Incorporation is not a one-time event. Keeping the entity alive takes ongoing filings and basic governance, and the consequences of neglect run from financial penalties to losing the corporation outright.
Nearly every state requires an annual or biennial report updating the corporation’s address, officer names, and registered agent. Report fees range from under $10 to a few hundred dollars. Miss the report and you can trigger late fees, loss of good standing, and eventually administrative dissolution, where the state revokes the charter. Some states also charge a separate annual franchise tax based on revenue, authorized shares, or other factors.
Most state statutes require at least one annual shareholder meeting and regular board meetings. Even as a sole shareholder and director, hold the meeting, vote on any required matters, and write it up. If years pass without a single recorded meeting, a creditor’s attorney will point to that gap in arguing the corporation was never really separate from you.
If you expand into other states by opening an office, hiring employees, or establishing a significant physical presence, register as a foreign corporation in each one. Thresholds for “doing business” vary, but an office, warehouse, or employees in the state typically triggers the requirement. Operating without registration can bar you from using that state’s courts to enforce contracts and expose the corporation to daily penalties.
Incorporation creates the legal entity, but it does not give you permission to operate. Most cities and counties require a general business license. Regulated industries such as construction, food service, healthcare, financial services, and real estate require separate professional or occupational licenses at the state level. Check with both your local government and your state’s licensing authority to confirm which permits apply before you start operating.