What Is a C Corporation (C Corp)? Taxes, Benefits, and How It Works

In the United States, almost every venture-backed business is a C corporation because of the valuable tax reasons involved.

So, what is a C corporation, and how do you know if it is the right structure for your business? To learn more about the benefits of this business structure (including OBBBA updates), how C corp taxes work, what a C corp is, and when a C corp is the right choice for your needs, read on.

What Is a C Corporation (C Corp)?

A C corporation is a separate legal entity from its shareholders. The corporation must pay corporate taxes on the profits, and shareholders must pay taxes on any dividends received.

C corporations are required to pay a 21% federal income tax. If dividends are paid, shareholders must pay their regular income tax rate on ordinary dividends and the lower capital gains rate on qualified dividends.

The definition of a C corporation stems from Subchapter C of the Internal Revenue Code (IRC). Unless the corporation elects S corporation status with the Internal Revenue Service (IRS), it is considered a C corporation by default.

C Corp as a Separate Legal Entity

In practice, a C corp is a separate legal entity. This means it can sign contracts, own property, sue and be sued, and take on debt separately from its shareholders. If the corporation defaults on its debts or faces a legal judgment, the shareholders’ property is protected. 

As an entity in its own right, it possesses a quality known as perpetual existence. The corporation continues to exist as an entity, even if its ownership changes.

How C Corp Ownership Works

With this business structure, the ownership is divided into stock. Then, shareholders are responsible for electing a board of directors. This board of directors is responsible for appointing officers and overseeing the corporation’s overall strategy. In turn, the chief executive officer (CEO), chief financial officer (CFO), and other officers are responsible for the company’s day-to-day operations.

Unlike S corporations, C corporations can have unlimited shareholders from any nationality or entity type. This is one of the major differences between the two structures and one reason C corporations are more popular among investors.

How C Corporation Taxes Work

C corporation taxation differs from that of other entities. Understanding this tax structure can help you determine if this business structure is right for you.

The 21% Federal Corporate Tax Rate

C corporations must file Form 1120 and pay a 21% federal income tax. For high-income business owners who are in the 37% tax bracket, this tax can be advantageous if the corporation retains profits. 

For example, a company that retains $500,000 in profits is taxed at 21%. This works out to $105,000. If the $500,000 were simply earned by a high-income owner in a pass-through business and taxed at 37%, the owner would have to pay $185,000 in federal income tax. By retaining profits in a C corp instead of using a pass-through business, this additional tax payment can be avoided.

Double Taxation: What It Is and Why It Hurts

Double taxation is one of the biggest drawbacks for C corporations. In essence, companies must pay a 21% corporate tax on profits. Then shareholders must pay tax on dividends. Qualified dividends are taxed at the 0%, 15%, or 20% capital gains rate. Ordinary dividends are taxed at the shareholder’s personal tax rate, which ranges from 10% to 37%.

Let’s look at how this might look in practice if a corporation earns $200,000 in profits. At the corporate level, the $200,000 must pay $42,000 in corporate tax. The remaining $158,000 is distributed as dividends. If you pay a 15% capital gains tax, you would have to pay $23,700. 

Personal income taxes tend to be higher than the capital gains tax. However, even at the lower capital gains rate in our example, 32.8% was paid in taxes. In reality, this type of double taxation isn’t nearly as high because profits aren’t taxed at the shareholder level if the business retains them.

It should also be noted that the Net Investment Income Tax (NIIT) of 3.8% applies to some high-earning individuals, trusts, and estates. For a married couple filing jointly, this tax wouldn’t kick in until the couple earns $250,000 or more per year.

Strategies To Minimize Double Taxation

If your business type is a C corporation, there are four main strategies you can use to reduce the taxes you pay on dividends.

1. Reasonable Salaries: If you pay owner-employees reasonable salaries, the corporation can deduct the salaries and reduce its taxable profits.
2. Reinvest Profits: By reinvesting profits instead of distributing them, you don’t have to pay a dividend tax.
3. Tax-Advantaged Benefits: Some benefits, such as health insurance, retirement benefits, and fringe benefits, are deductible for the corporation. In some instances, these benefits are tax-free for the employees as well.
4. Stock-Based Compensation: When owner-employees are compensated through stock options, they can defer income recognition.

Form 1120: The C Corp Tax Return

All C corporations must file Form 1120 each year, even if they don’t have any taxable income. On this form, businesses must fill out information about their credits, deductions, income, and final tax liability. This form is due on April 15 for calendar-year corporations, but a 6-month extension is available if you file Form 7004. Corporations that file 10 or more returns must e-file.

Key Benefits of a C Corporation

In addition to liability protection, a C corporation offers several useful benefits.

Unlimited Shareholders and No Ownership Restrictions

A C corporation’s shareholders can be of any nationality or entity type, and there is no limit on the number of shareholders. Because of this benefit, C corporations are the preferred form for companies backed by venture capital or seeking to go public.

Multiple Classes of Stock

Unlike an S corp, a C corp can issue common and preferred stock. They can issue multiple series of preferred stock, with different dividend rights and liquidation preferences. This type of flexibility is appealing to investors and offers more options for complex investor arrangements.

QSBS (Section 1202): The Most Powerful C Corp Tax Benefit for Founders

The Qualified Small Business Stock (QSBS) exclusion allows shareholders of qualified C-corp stock to exclude up to $15 million (increased in 2025 from $10 million) in capital gains from their federal income tax when they sell their shares, making it one of the most valuable C corp benefits. To qualify, the C corporation’s gross assets may not exceed $75 million, which was increased in 2025 from $50 million. The QSBS is only for shares that are acquired at the original issuance. 

For 100% exclusion, the holding period is five years. Partial exclusions are available at three years (50%) and four years (75%).

S corps, LLCs, and pass-through entities don’t qualify, which is why many founders opt for C corps. If the founder exits at $15 million, they can save up to $3,570,000 in taxes.

Full Deduction of Employee Benefits and Fringe Benefits

A C corp can fully deduct health insurance premiums, life insurance, disability coverage, and retirement contributions. The biggest difference is that C-corp owner-employees can also receive these benefits tax-free. 

Permanent Bonus Depreciation 

Under the One Big Beautiful Bill Act (OBBBA 2025), businesses can access an accelerated depreciation schedule for equipment, machinery, production facilities, and other depreciable assets. Before the bill, bonus depreciation was being phased down year by year. Now, capital-intensive C corps can take advantage of 100% bonus depreciation and significantly reduce their taxable income.

Domestic R&D Expense Deduction Restored

OBBBA also changed how businesses write off domestic research and development (R&D) expenses. While R&D expenses were previously amortized over five years, they can now be fully deducted in the first year. For tech startups and companies that invest heavily in R&D, this tax advantage offers a useful benefit.

Net Operating Loss (NOL) Carryforward

When a C corporation operates at a loss, it can carry those losses forward indefinitely to future tax returns. For example, if the corporation has $1 million in losses during its initial year and earns only $100,000 in profits in each subsequent year, it could carry forward the original losses and avoid federal taxes until its 12th year of operation. 

Perpetual Existence and Easier Capital Raising

A C-corp doesn’t dissolve if it changes ownership or if a shareholder dies or leaves the business. This is one of the major reasons why this business structure is so appealing to long-term investors. Because of this benefit and its ability to issue stock, C corps are the only business structure allowed to release an initial public offering (IPO).

Disadvantages of a C Corporation

This business structure isn’t right for everyone, so it’s important to be aware of the drawbacks before you incorporate your business.

Double Taxation on Distributed Profits

Double taxation of corporate profits and shareholder dividends is a major disadvantage, though mitigation strategies can help. It occurs when the corporation pays a tax at the corporate level (21%), and shareholders pay personal income taxes on the dividends (15% to 23.8%). For example, a corporation that earns $200,000 in profit pays a tax of $42,000. If the remaining $158,000 is paid as a dividend, the shareholder will also pay between $23,700 and $37,600. In this instance, total taxation can exceed 35% of the original profit. However, this problem can be avoided by retaining earnings instead of distributing them to shareholders.

Higher Administrative Complexity and Costs

On an administrative level, C corporations require more formalities. Bylaws, stock issuance documentation, regular state filings, and separate corporate records are just a few of the administrative expectations you’ll need to meet. Corporations will also need to hold annual board meetings and record the minutes. 

Once the corporation is set up, there are additional costs associated with its operation. The corporation will need to pay for legal costs, payroll compliance, and accounting fees, which can be challenging for early-stage and small businesses.

C Corp Losses Cannot Pass Through to Shareholders

With a C corp, losses become NOL carryforwards and do not flow through to individual returns as they do with a pass-through entity. For owners seeking to offset personal income, a C corporation is not the right choice.

No QBI Deduction for Shareholders

C-corp shareholders cannot use the Qualified Business Income (QBI) deduction as pass-through entity owners do. For profitable small businesses that don’t need to raise outside capital, the QBI deduction makes an S corporation or limited liability company (LLC) a preferable option. The 20% deduction had an income threshold of $197,300 for single filers and $394,600 for joint filers in 2025, with phase-in ranges.

C Corp vs. S Corp: A Quick Summary

A C-corp and an S-corp differ in terms of taxation, ownership, stock classes, and investor suitability. For a more in-depth breakdown of the differences and a full comparison table, check out our C Corp vs. S Corp guide.

When Should You Choose a C Corporation?

A C-Corp isn’t the right choice for every business. If you fit the following descriptions, this structure may make sense for your needs.

You Plan to Raise Venture Capital or Institutional Investment

Institutional and venture capital (VC) firms almost always require businesses to have a C corporation (C corp) structure because C corps have anti-dilution protections, preferred stock, and the ability for any entity type or nationality to buy stock. To raise a Series A in an S Corp or LLC, you’ll generally need to convert your business first.

You Plan to Go Public (IPO)

If you plan to go public in the future, forming a C-corp helps you avoid restructuring later. As a general rule, only C corporations can launch IPOs on U.S. stock exchanges.

You Want To Issue Equity Compensation to Employees

Many startups and established businesses use equity, such as stock options, to attract talent. Incentive Stock Options (ISOs) are available only through C corporations. Other equity compensation styles are also easier to offer through a C corp.

You Plan To Reinvest Profits Rather Than Distribute Them

A corporation’s double taxation issue is deferred if you are reinvesting profits instead of distributing dividends. For high-earning owners, the 21% corporate tax is much lower than the 37% personal income tax on top earners.

You Want To Take Advantage of QSBS

The QSBS exclusion is only available to C corps, so you’ll need this structure from the beginning if you want to potentially save millions when you exit the business.

You Have Foreign Shareholders or a Complex Ownership Structure

Businesses with foreign owners generally need to be a C corporation. You cannot use an S corporation if any owner is a foreign corporation, a non-resident alien, or a different company. However, LLCs and partnerships can have foreign owners.

How To Form a C Corporation: Step by Step

To form a C corp, there are a few key steps you will need to take.

Step 1: Choose Your State of Incorporation

Large companies and firms with many investors often incorporate in Delaware because of its business-friendly courts and lack of a corporate income tax on companies that operate out of state. Wyoming and Nevada are also popular incorporation locations. 

Keep in mind that you’ll need to register as a foreign corporation in any state where you actually do business. Because of this, many companies incorporate in the state where they actually have operations.

Step 2: Choose and Search Your Business Name

You need to pick a unique name for your corporation. To see if a name is available, you can search the Secretary of State database in your state of incorporation. With EntityCheck’s Secretary of State (SOS) Business Search, you can also see if a name is already registered. 

Step 3: File Articles of Incorporation

You’ll need to file Articles of Incorporation with your state’s Secretary of State. You’ll typically need to provide the following information.

• Corporate name
• Registered agent
• Authorized shares and classes
• Business purpose
• Incorporator information

This process can be relatively inexpensive and fast. In Delaware, you can complete it online in just 24 hours. Depending on the state, the filing fees can start as low as $50.

Step 4: Appoint a Registered Agent

You must designate a registered agent to accept government and legal correspondence on behalf of your corporation during business hours. While someone at your corporation can serve as the registered agent, many founders instead rely on a registered agent service.

Step 5: Create Corporate Bylaws and Issue Stock

You’ll need to create bylaws about your corporation’s officer roles, meeting requirements, board structure, and voting processes. Following the principles set out in your Articles of Incorporation, your corporation must issue stock to founding shareholders. 

When future investors perform due diligence, they’ll want to review your stock ledger and cap table. Because of this, it’s essential to maintain organized records from day one.

Step 6: Get Your EIN and Open a Business Bank Account

You can get an employer identification number (EIN) from the IRS website for free in just 15 minutes. This form is necessary for hiring employees, completing Form 1120, and setting up a business bank account. To see if your business has a registered EIN, you can use EntityCheck’s Instant EIN Search. This tool can also help you with vendor and partner due diligence.

Step 7: Obtain Required Licenses and Permits

Forming a C Corp is only one step in the process. Before you can legally operate, you’ll also need to obtain all of the local, state, and federal licenses and permits applicable to your industry. To gain an idea of what licenses are normally required, look up your competitors’ licenses in EntityCheck’s Instant Professional License Lookup.

Step 8: Hold Your First Board Meeting and Maintain Corporate Formalities

Once your business is operational, you’ll need to hold a first board meeting. During the meeting, you’ll elect officers, adopt your bylaws, and authorize your stock issuance. All of these decisions should be documented in the meeting minutes. Each year, the corporation is required to have annual shareholder and board meetings. If these requirements aren’t met, you risk piercing the corporate veil and increasing your personal liability.

C Corporation Ongoing Compliance Requirements

To maintain your corporation’s good standing, there are regular filings and recordkeeping requirements you must meet.

Annual Form 1120 Filing

Form 1120 must be filed by April 15 each year. If your corporation has 10 or more total returns of any type, you must e-file them. While the taxes owed must be paid by the original deadline to avoid penalties, you can use Form 7004 to get a six-month extension on turning in the form.

State Annual Reports and Franchise Taxes

States generally require C corporations to file an annual return and pay a franchise tax or fee, though requirements vary by state. For example, Delaware’s franchise tax for standard corporations ranges from $400 for small companies to $200,000 per year. In certain circumstances, this tax can reach $250,000. To find out your tax obligations, remember to check the states where you are registered to operate and the state where you are incorporated.

Corporate Formalities: Board Meetings and Minutes

You’ll need to hold at least one board meeting and one shareholder meeting each year. These meetings should be documented in formal minutes. You’ll also need to document important corporate decisions, as investors will want to review these records during due diligence.

Payroll and Employment Tax Filings

A corporation has to run payroll if it has any employees, including owner-employees. This means the C corp must withhold income tax and FICA, and run payroll. Form 941 must be filed each quarter, and W-2s must be issued each year. Trying to fix mistakes retroactively can be expensive, so it’s important to set up your payroll properly from day one.